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c36efda8a5
ir/ir_x86.dasc
Dmitry Stogov c36efda8a5 Improve register allocation for commutative instructions 
- swap operands f this make sense
- fix coalescing bug
2022-04-21 16:38:18 +03:00

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#define IR_X64 1
#include "ir.h"
#include "ir_private.h"
#include "ir_x86.h"
#ifdef _WIN32
# define IR_SET_ALIGNED(alignment, decl) __declspec(align(alignment)) decl
#elif defined(HAVE_ATTRIBUTE_ALIGNED)
# define IR_SET_ALIGNED(alignment, decl) decl __attribute__ ((__aligned__ (alignment)))
#else
# define IR_SET_ALIGNED(alignment, decl) decl
#endif
#include "dynasm/dasm_proto.h"
#include "dynasm/dasm_x86.h"
#define IR_IS_SIGNED_32BIT(val) ((((intptr_t)(val)) <= 0x7fffffff) && (((intptr_t)(val)) >= (-2147483647 - 1)))
#define IR_IS_UNSIGNED_32BIT(val) ((((uintptr_t)(val)) <= 0xffffffff) && (((uintptr_t)(val)) >= 0))
#define IR_IS_32BIT(type, val) (IR_IS_TYPE_SIGNED(type) ? IR_IS_SIGNED_32BIT((val).i64) : IR_IS_UNSIGNED_32BIT((val).u64))
|.if X64
|.arch x64
|.else
|.arch x86
|.endif
|.actionlist dasm_actions
|.globals ir_lb
|.section code, cold_code, rodata, jmp_table
|.macro ASM_REG_OP, op, type, reg
|| switch (ir_type_size[type]) {
|| case 1:
| op Rb(reg)
|| break;
|| case 2:
| op Rw(reg)
|| break;
|| case 4:
| op Rd(reg)
|| break;
|| case 8:
| op Rq(reg)
|| break;
|| default:
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_MEM_OP, op, type, mem
|| switch (ir_type_size[type]) {
|| case 1:
| op byte mem
|| break;
|| case 2:
| op word mem
|| break;
|| case 4:
| op dword mem
|| break;
|| case 8:
| op qword mem
|| break;
|| default:
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_REF_OP, op, type, ref
|| do {
|| ir_reg _reg = ir_ref_reg(ctx, ref);
|| if (_reg >= 0) {
| ASM_REG_OP op, type, _reg
|| } else {
|| int32_t offset = ir_ref_spill_slot(ctx, ref);
|| if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_MEM_OP op, type, [rbp+offset]
|| } else {
| ASM_MEM_OP op, type, [rsp+offset]
|| }
|| }
|| } while (0);
|.endmacro
|.macro ASM_REG_REG_OP, op, type, dst, src
|| switch (ir_type_size[type]) {
|| case 1:
| op Rb(dst), Rb(src)
|| break;
|| case 2:
| op Rw(dst), Rw(src)
|| break;
|| case 4:
| op Rd(dst), Rd(src)
|| break;
|| case 8:
| op Rq(dst), Rq(src)
|| break;
|| default:
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_REG_IMM_OP, op, type, dst, src
|| switch (ir_type_size[type]) {
|| case 1:
| op Rb(dst), src
|| break;
|| case 2:
| op Rw(dst), src
|| break;
|| case 4:
| op Rd(dst), src
|| break;
|| case 8:
| op Rq(dst), src
|| break;
|| default:
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_MEM_REG_OP, op, type, dst, src
|| switch (ir_type_size[type]) {
|| case 1:
| op byte dst, Rb(src)
|| break;
|| case 2:
| op word dst, Rw(src)
|| break;
|| case 4:
| op dword dst, Rd(src)
|| break;
|| case 8:
| op qword dst, Rq(src)
|| break;
|| default:
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_MEM_IMM_OP, op, type, dst, src
|| switch (ir_type_size[type]) {
|| case 1:
| op byte dst, src
|| break;
|| case 2:
| op word dst, src
|| break;
|| case 4:
| op dword dst, src
|| break;
|| case 8:
| op qword dst, src
|| break;
|| default:
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_REG_MEM_OP, op, type, dst, src
|| switch (ir_type_size[type]) {
|| case 1:
| op Rb(dst), byte src
|| break;
|| case 2:
| op Rw(dst), word src
|| break;
|| case 4:
| op Rd(dst), dword src
|| break;
|| case 8:
| op Rq(dst), qword src
|| break;
|| default:
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_REG_REF_MOV, type, dst, src
|| if (IR_IS_CONST_REF(src)) {
|| ir_insn *_insn = &ctx->ir_base[src];
|| if (_insn->op == IR_STR) {
|| int label = ctx->cfg_blocks_count - src;
| lea Ra(dst), aword [=>label]
|| _insn->emit_const = 1;
|| } else if (ir_type_size[type] == 8 && !IR_IS_SIGNED_32BIT(_insn->val.i64)) {
|| if (IR_IS_UNSIGNED_32BIT(_insn->val.u64)) {
| mov Rd(dst), _insn->val.u32 // zero extended load
|| } else {
| mov64 Ra(dst), _insn->val.i64
|| }
|| } else if (_insn->val.i64 == 0) {
| ASM_REG_REG_OP xor, type, dst, dst
|| } else {
| ASM_REG_IMM_OP mov, type, dst, _insn->val.i32 // sign extended load
|| }
|| } else {
|| ir_reg _reg = ir_ref_reg(ctx, src);
|| if (_reg >= 0) {
| ASM_REG_REG_OP mov, type, dst, _reg
|| } else {
|| int32_t offset = ir_ref_spill_slot(ctx, src);
|| if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_REG_MEM_OP mov, type, dst, [rbp+offset]
|| } else {
| ASM_REG_MEM_OP mov, type, dst, [rsp+offset]
|| }
|| }
|| }
|.endmacro
|.macro ASM_REG_REF_OP, _op, type, dst, src
|| if (IR_IS_CONST_REF(src)) {
|| ir_insn *_insn = &ctx->ir_base[src];
|| IR_ASSERT(IR_IS_SIGNED_32BIT(_insn->val.i64));
| ASM_REG_IMM_OP _op, type, dst, _insn->val.i32
|| } else {
|| ir_reg _reg = ir_ref_reg(ctx, src);
|| if (_reg >= 0) {
| ASM_REG_REG_OP _op, type, dst, _reg
|| } else {
|| int32_t offset = ir_ref_spill_slot(ctx, src);
|| if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_REG_MEM_OP _op, type, dst, [rbp+offset]
|| } else {
| ASM_REG_MEM_OP _op, type, dst, [rsp+offset]
|| }
|| }
|| }
|.endmacro
|.macro ASM_REF_REG_OP, op, type, dst, src
|| do {
|| ir_reg _reg = ir_ref_reg(ctx, dst);
|| if (_reg >= 0) {
| ASM_REG_REG_OP op, type, _reg, src
|| } else {
|| int32_t offset = ir_ref_spill_slot(ctx, dst);
|| if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_MEM_REG_OP op, type, [rbp+offset], src
|| } else {
| ASM_MEM_REG_OP op, type, [rsp+offset], src
|| }
|| }
|| } while (0);
|.endmacro
|.macro ASM_REF_IMM_OP, op, type, dst, src
|| do {
|| ir_reg _reg = ir_ref_reg(ctx, dst);
|| if (_reg >= 0) {
| ASM_REG_IMM_OP op, type, _reg, src
|| } else {
|| int32_t offset = ir_ref_spill_slot(ctx, dst);
|| if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_MEM_IMM_OP op, type, [rbp+offset], src
|| } else {
| ASM_MEM_IMM_OP op, type, [rsp+offset], src
|| }
|| }
|| } while (0);
|.endmacro
|.macro ASM_REG_REG_IMUL, type, dst, src
|| switch (ir_type_size[type]) {
|| case 2:
| imul Rw(dst), Rw(src)
|| break;
|| case 4:
| imul Rd(dst), Rd(src)
|| break;
|| case 8:
| imul Rq(dst), Rq(src)
|| break;
|| default:
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_REG_IMM_IMUL, type, dst, src
|| switch (ir_type_size[type]) {
|| case 2:
| imul Rw(dst), src
|| break;
|| case 4:
| imul Rd(dst), src
|| break;
|| case 8:
| imul Rq(dst), src
|| break;
|| default:
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_REG_MEM_IMUL, type, dst, src
|| switch (ir_type_size[type]) {
|| case 2:
| imul Rw(dst), word src
|| break;
|| case 4:
| imul Rd(dst), dword src
|| break;
|| case 8:
| imul Rq(dst), qword src
|| break;
|| default:
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_REG_REF_IMUL, type, dst, src
|| if (IR_IS_CONST_REF(src)) {
|| ir_insn *_insn = &ctx->ir_base[src];
|| IR_ASSERT(IR_IS_SIGNED_32BIT(_insn->val.i64));
| ASM_REG_IMM_IMUL type, dst, _insn->val.i32
|| } else {
|| ir_reg _reg = ir_ref_reg(ctx, src);
|| if (_reg >= 0) {
| ASM_REG_REG_IMUL type, dst, _reg
|| } else {
|| int32_t offset = ir_ref_spill_slot(ctx, src);
|| if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_REG_MEM_IMUL type, dst, [rbp+offset]
|| } else {
| ASM_REG_MEM_IMUL type, dst, [rsp+offset]
|| }
|| }
|| }
|.endmacro
|.macro ASM_SSE2_REG_REG_OP, fop, dop, type, dst, src
|| if (type == IR_FLOAT) {
| fop xmm(dst-IR_REG_XMM0), xmm(src-IR_REG_XMM0)
|| } else if (type == IR_DOUBLE) {
| dop xmm(dst-IR_REG_XMM0), xmm(src-IR_REG_XMM0)
|| } else {
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_SSE2_MEM_REG_OP, fop, dop, type, dst, src
|| if (type == IR_FLOAT) {
| fop dword dst, xmm(src-IR_REG_XMM0)
|| } else if (type == IR_DOUBLE) {
| dop qword dst, xmm(src-IR_REG_XMM0)
|| } else {
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_SSE2_REG_MEM_OP, fop, dop, type, dst, src
|| if (type == IR_FLOAT) {
| fop xmm(dst-IR_REG_XMM0), dword src
|| } else if (type == IR_DOUBLE) {
| dop xmm(dst-IR_REG_XMM0), qword src
|| } else {
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_SSE2_REG_REF_OP, fop, dop, type, dst, src
|| if (IR_IS_CONST_REF(src)) {
|| ir_insn *_insn = &ctx->ir_base[src];
|| int label = ctx->cfg_blocks_count - src;
| ASM_SSE2_REG_MEM_OP fop, dop, type, dst, [=>label]
|| _insn->emit_const = 1;
|| } else {
|| ir_reg _reg = ir_ref_reg(ctx, src);
|| if (_reg >= 0) {
| ASM_SSE2_REG_REG_OP fop, dop, type, dst, _reg
|| } else {
|| int32_t offset = ir_ref_spill_slot(ctx, src);
|| if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_SSE2_REG_MEM_OP fop, dop, type, dst, [rbp+offset]
|| } else {
| ASM_SSE2_REG_MEM_OP fop, dop, type, dst, [rsp+offset]
|| }
|| }
|| }
|.endmacro
|.macro ASM_SSE2_REF_REG_OP, fop, dop, type, dst, src
|| do {
|| ir_reg _reg = ir_ref_reg(ctx, dst);
|| if (_reg >= 0) {
| ASM_SSE2_REG_REG_OP fop, dop, type, _reg, src
|| } else {
|| int32_t offset = ir_ref_spill_slot(ctx, dst);
|| if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_SSE2_MEM_REG_OP fop, dop, type, [rbp+offset], src
|| } else {
| ASM_SSE2_MEM_REG_OP fop, dop, type, [rsp+offset], src
|| }
|| }
|| } while (0);
|.endmacro
|.macro ASM_AVX_REG_REG_REG_OP, fop, dop, type, dst, op1, op2
|| if (type == IR_FLOAT) {
| fop xmm(dst-IR_REG_XMM0), xmm(op1-IR_REG_XMM0), xmm(op2-IR_REG_XMM0)
|| } else if (type == IR_DOUBLE) {
| dop xmm(dst-IR_REG_XMM0), xmm(op1-IR_REG_XMM0), xmm(op2-IR_REG_XMM0)
|| } else {
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_AVX_REG_REG_MEM_OP, fop, dop, type, dst, op1, op2
|| if (type == IR_FLOAT) {
| fop xmm(dst-IR_REG_XMM0), xmm(op1-IR_REG_XMM0), dword op2
|| } else if (type == IR_DOUBLE) {
| dop xmm(dst-IR_REG_XMM0), xmm(op1-IR_REG_XMM0), qword op2
|| } else {
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_AVX_REG_REG_REF_OP, fop, dop, type, dst, op1, op2
|| if (IR_IS_CONST_REF(op2)) {
|| ir_insn *_insn = &ctx->ir_base[op2];
|| int label = ctx->cfg_blocks_count - op2;
| ASM_AVX_REG_REG_MEM_OP fop, dop, type, dst, op1, [=>label]
|| _insn->emit_const = 1;
|| } else {
|| ir_reg _reg = ir_ref_reg(ctx, op2);
|| if (_reg >= 0) {
| ASM_AVX_REG_REG_REG_OP fop, dop, type, dst, op1, _reg
|| } else {
|| int32_t offset = ir_ref_spill_slot(ctx, op2);
|| if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_AVX_REG_REG_MEM_OP fop, dop, type, dst, op1, [rbp+offset]
|| } else {
| ASM_AVX_REG_REG_MEM_OP fop, dop, type, dst, op1, [rsp+offset]
|| }
|| }
|| }
|.endmacro
|.macro ASM_FP_REG_REG_OP, fop, dop, avx_fop, avx_dop, type, dst, src
|| if (type == IR_FLOAT) {
|| if (ctx->flags & IR_AVX) {
| avx_fop xmm(dst-IR_REG_XMM0), xmm(src-IR_REG_XMM0)
|| } else {
| fop xmm(dst-IR_REG_XMM0), xmm(src-IR_REG_XMM0)
|| }
|| } else if (type == IR_DOUBLE) {
|| if (ctx->flags & IR_AVX) {
| avx_dop xmm(dst-IR_REG_XMM0), xmm(src-IR_REG_XMM0)
|| } else {
| dop xmm(dst-IR_REG_XMM0), xmm(src-IR_REG_XMM0)
|| }
|| } else {
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_FP_MEM_REG_OP, fop, dop, avx_fop, avx_dop, type, dst, src
|| if (type == IR_FLOAT) {
|| if (ctx->flags & IR_AVX) {
| avx_fop dword dst, xmm(src-IR_REG_XMM0)
|| } else {
| fop dword dst, xmm(src-IR_REG_XMM0)
|| }
|| } else if (type == IR_DOUBLE) {
|| if (ctx->flags & IR_AVX) {
| avx_dop qword dst, xmm(src-IR_REG_XMM0)
|| } else {
| dop qword dst, xmm(src-IR_REG_XMM0)
|| }
|| } else {
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_FP_REG_MEM_OP, fop, dop, avx_fop, avx_dop, type, dst, src
|| if (type == IR_FLOAT) {
|| if (ctx->flags & IR_AVX) {
| avx_fop xmm(dst-IR_REG_XMM0), dword src
|| } else {
| fop xmm(dst-IR_REG_XMM0), dword src
|| }
|| } else if (type == IR_DOUBLE) {
|| if (ctx->flags & IR_AVX) {
| avx_dop xmm(dst-IR_REG_XMM0), qword src
|| } else {
| dop xmm(dst-IR_REG_XMM0), qword src
|| }
|| } else {
|| IR_ASSERT(0);
|| }
|.endmacro
|.macro ASM_FP_REG_REF_OP, fop, dop, avx_fop, avx_dop, type, dst, src
|| if (IR_IS_CONST_REF(src)) {
|| ir_insn *_insn = &ctx->ir_base[src];
|| int label = ctx->cfg_blocks_count - src;
| ASM_FP_REG_MEM_OP fop, dop, avx_fop, avx_dop, type, dst, [=>label]
|| _insn->emit_const = 1;
|| } else {
|| ir_reg _reg = ir_ref_reg(ctx, src);
|| if (_reg >= 0) {
| ASM_FP_REG_REG_OP fop, dop, avx_fop, avx_dop, type, dst, _reg
|| } else {
|| int32_t offset = ir_ref_spill_slot(ctx, src);
|| if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_FP_REG_MEM_OP fop, dop, avx_fop, avx_dop, type, dst, [rbp+offset]
|| } else {
| ASM_FP_REG_MEM_OP fop, dop, avx_fop, avx_dop, type, dst, [rsp+offset]
|| }
|| }
|| }
|.endmacro
|.macro ASM_FP_REF_REG_OP, fop, dop, avx_fop, avx_dop, type, dst, src
|| do {
|| ir_reg _reg = ir_cef_reg(ctx, dst);
|| if (_reg >= 0) {
| ASM_FP_REG_REG_OP fop, dop, avx_fop, avx_dop, type, _reg, src
|| } else {
|| int32_t offset = ir_ref_spill_slot(ctx, dst);
|| if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_FP_MEM_REG_OP fop, dop, avx_fop, avx_dop, type, [rbp+offset], src
|| } else {
| ASM_FP_MEM_REG_OP fop, dop, avx_fop, avx_dop, type, [rsp+offset], src
|| }
|| }
|| } while (0);
|.endmacro
|.macro ASM_FP_REG_REF_MOV, type, dst, src
|| if (IR_IS_CONST_REF(src)) {
|| ir_insn *_insn = &ctx->ir_base[src];
|| int label = ctx->cfg_blocks_count - src;
| ASM_FP_REG_MEM_OP movss, movsd, vmovss, vmovsd, type, dst, [=>label]
|| _insn->emit_const = 1;
|| } else {
|| ir_reg _reg = ir_ref_reg(ctx, src);
|| if (_reg >= 0) {
| ASM_FP_REG_REG_OP movaps, movapd, vmovaps, vmovapd, type, dst, _reg
|| } else {
|| int32_t offset = ir_ref_spill_slot(ctx, src);
|| if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_FP_REG_MEM_OP movss, movsd, vmovss, vmovsd, type, dst, [rbp+offset]
|| } else {
| ASM_FP_REG_MEM_OP movss, movsd, vmovss, vmovsd, type, dst, [rsp+offset]
|| }
|| }
|| }
|.endmacro
|.macro ASM_FP_REF_REG_MOV, type, dst, src
|| do {
|| ir_reg _reg = ir_ref_reg(ctx, dst);
|| if (_reg >= 0) {
| ASM_FP_REG_REG_OP movaps, movapd, vmovaps, vmovapd, type, _reg, src
|| } else {
|| int32_t offset = ir_ref_spill_slot(ctx, dst);
|| if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_FP_MEM_REG_OP movss, movsd, vmovss, vmovsd, type, [rbp+offset], src
|| } else {
| ASM_FP_MEM_REG_OP movss, movsd, vmovss, vmovsd, type, [rsp+offset], src
|| }
|| }
|| } while (0);
|.endmacro
|.macro ASM_FP_REG_VREG_MOV, type, dst, src
|| do {
|| ir_reg _reg = ir_vreg_reg(ctx, src);
|| if (_reg >= 0) {
| ASM_FP_REG_REG_OP movaps, movapd, vmovaps, vmovapd, type, dst, _reg
|| } else {
|| int32_t offset = ir_vreg_spill_slot(ctx, src);
|| if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_FP_REG_MEM_OP movss, movsd, vmovss, vmovsd, type, dst, [rbp+offset]
|| } else {
| ASM_FP_REG_MEM_OP movss, movsd, vmovss, vmovsd, type, dst, [rsp+offset]
|| }
|| }
|| } while (0);
|.endmacro
|.macro ASM_FP_VREG_REG_MOV, type, dst, src
|| do {
|| ir_reg _reg = ir_vreg_reg(ctx, dst);
|| if (_reg >= 0) {
| ASM_FP_REG_REG_OP movaps, movapd, vmovaps, vmovapd, type, _reg, src
|| } else {
|| int32_t offset = ir_vreg_spill_slot(ctx, dst);
|| if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_FP_MEM_REG_OP movss, movsd, vmovss, vmovsd, type, [rbp+offset], src
|| } else {
| ASM_FP_MEM_REG_OP movss, movsd, vmovss, vmovsd, type, [rsp+offset], src
|| }
|| }
|| } while (0);
|.endmacro
typedef struct _ir_backend_data {
int32_t stack_frame_size;
int32_t stack_frame_alignment;
ir_regset used_preserved_regs;
dasm_State *dasm_state;
int rodata_label, jmp_table_label;
bool double_neg_const;
bool float_neg_const;
bool double_abs_const;
bool float_abs_const;
} ir_backend_data;
#define IR_GP_REG_NAME(code, name64, name32, name16, name8, name8h) \
#name64,
#define IR_GP_REG_NAME32(code, name64, name32, name16, name8, name8h) \
#name32,
#define IR_GP_REG_NAME16(code, name64, name32, name16, name8, name8h) \
#name16,
#define IR_GP_REG_NAME8(code, name64, name32, name16, name8, name8h) \
#name8,
#define IR_FP_REG_NAME(code, name) \
#name,
static const char *_ir_reg_name[IR_REG_NUM] = {
IR_GP_REGS(IR_GP_REG_NAME)
IR_FP_REGS(IR_FP_REG_NAME)
};
static const char *_ir_reg_name32[IR_REG_NUM] = {
IR_GP_REGS(IR_GP_REG_NAME32)
};
static const char *_ir_reg_name16[IR_REG_NUM] = {
IR_GP_REGS(IR_GP_REG_NAME16)
};
static const char *_ir_reg_name8[IR_REG_NUM] = {
IR_GP_REGS(IR_GP_REG_NAME8)
};
/* Calling Convention */
#ifdef _WIN64
static const int8_t _ir_int_reg_params[IR_REG_INT_ARGS] = {
IR_REG_INT_ARG1,
IR_REG_INT_ARG2,
IR_REG_INT_ARG3,
IR_REG_INT_ARG4,
};
static const int8_t _ir_fp_reg_params[IR_REG_FP_ARGS] = {
IR_REG_FP_ARG1,
IR_REG_FP_ARG2,
IR_REG_FP_ARG3,
IR_REG_FP_ARG4,
};
#elif defined(__x86_64__)
static const int8_t _ir_int_reg_params[IR_REG_INT_ARGS] = {
IR_REG_INT_ARG1,
IR_REG_INT_ARG2,
IR_REG_INT_ARG3,
IR_REG_INT_ARG4,
IR_REG_INT_ARG5,
IR_REG_INT_ARG6,
};
static const int8_t _ir_fp_reg_params[IR_REG_FP_ARGS] = {
IR_REG_FP_ARG1,
IR_REG_FP_ARG2,
IR_REG_FP_ARG3,
IR_REG_FP_ARG4,
IR_REG_FP_ARG5,
IR_REG_FP_ARG6,
IR_REG_FP_ARG7,
IR_REG_FP_ARG8,
};
#else
static const int8_t *_ir_int_reg_params = NULL;
static const int8_t *_ir_fp_reg_params = NULL;
#endif
const char *ir_reg_name(int8_t reg, ir_type type)
{
IR_ASSERT(reg >= 0 && reg < IR_REG_NUM);
if (IR_IS_TYPE_FP(type) || ir_type_size[type] == 8) {
return _ir_reg_name[reg];
} else if (ir_type_size[type] == 4) {
return _ir_reg_name32[reg];
} else if (ir_type_size[type] == 2) {
return _ir_reg_name16[reg];
} else if (ir_type_size[type] == 1) {
return _ir_reg_name8[reg];
}
IR_ASSERT(0);
return NULL;
}
typedef enum _ir_rule {
IR_SKIP = IR_LAST_OP,
IR_SKIP_REG,
IR_CMP_INT, // res=reg({%rax,%rbx,%rcx,%rdx}), op1=reg(GP), op2=reg(GP)|mem|imm
// res=reg({%rax,%rbx,%rcx,%rdx}), op1=mem, op2=reg(GP)|imm
IR_CMP_FP, // res=reg({%rax,%rbx,%rcx,%rdx}), op1=reg(FP), op2=reg(FP)|mem
IR_MUL_INT, // res=%rax op1=%rax, op2=reg(GP)|mem, change=%rdx
IR_DIV_INT, // res=%rax op1=%rax, op2=reg(GP)|mem, change=%rdx
IR_MOD_INT, // res=%rdx op1=%rax, op2=reg(GP)|mem, change=%rax
IR_LEA_OB, // res=reg(GP), op1=reg(GP)
IR_LEA_SI, // res=reg(GP), op1=reg(GP)
IR_LEA_SIB, // res=reg(GP), op1=reg(GP)
IR_LEA_IB, // res=reg(GP), op1=reg(GP), op2=reg(GP)
IR_LEA_SI_O,
IR_LEA_SIB_O,
IR_LEA_IB_O,
IR_LEA_I_OB,
IR_LEA_OB_I,
IR_LEA_OB_SI,
IR_LEA_SI_OB,
IR_LEA_B_SI,
IR_LEA_SI_B,
IR_INC,
IR_DEC,
IR_MUL_2,
IR_MUL_PWR2,
IR_DIV_PWR2,
IR_MOD_PWR2,
IR_BOOL_NOT_INT,
IR_ABS_INT,
IR_OP_INT,
IR_OP_FP,
IR_BINOP_INT, // res=reg(GP), op1.reg(GP, hint=res), op2=any
IR_BINOP_SSE2, // res=reg(FP), op1.reg(FP, hint=res), op2=reg(FP)|mem
IR_BINOP_AVX, // res=reg(FP), op1.reg(FP), op2=reg(FP)|mem
IR_SHIFT, // res=reg(GP), op1.reg(GP, hint=res), op2=%rcx
IR_SHIFT_CONST, // res=reg(GP), op1.reg(GP, hint=res), imm
IR_COPY_INT, // res=reg(GP), op1=reg(GP)|mem|imm
// res=mem, op1=reg(GP)|imm
IR_COPY_FP, // res=reg(FP), op1=reg(FP)|mem
// res=mem, op2=reg(GP)
IR_CMP_AND_BRANCH_INT, // op1=reg(GP), op2=reg(GP)|mem|imm
// op1=mem, op2=reg(GP)|imm
IR_CMP_AND_BRANCH_FP, // op1=reg(FP), op2=reg(FP)|mem
IR_VLOAD_INT,
IR_VLOAD_FP,
IR_VSTORE_INT,
IR_VSTORE_FP,
IR_LOAD_INT,
IR_LOAD_FP,
IR_STORE_INT,
IR_STORE_FP,
IR_IF_INT, // op1=reg(GP)|mem
IR_RETURN_VOID, //
IR_RETURN_INT, // op1=reg(GP, hint=%rax)|mem|imm
IR_RETURN_FP, // op1=reg(FP, hint=%xmm0)|mem
} ir_rule;
/* instruction selection */
bool ir_needs_vreg(ir_ctx *ctx, ir_ref ref)
{
IR_ASSERT(ctx->rules);
return ctx->rules[ref] != IR_SKIP;
}
ir_regset ir_get_scratch_regset(ir_ctx *ctx, ir_ref ref)
{
ir_ref rule;
rule = ctx->rules[ref];
if (rule == IR_SHIFT) {
return IR_REGSET(IR_REG_RCX);
} else if (rule == IR_MUL_INT || rule == IR_DIV_INT) {
return IR_REGSET(IR_REG_RAX) | IR_REGSET(IR_REG_RDX); /* %rax - used as result */
} else if (rule == IR_MOD_INT) {
return IR_REGSET(IR_REG_RAX) | IR_REGSET(IR_REG_RDX); /* %rdx - used as result */
} else if (rule == IR_CALL) {
return IR_REGSET_SCRATCH;
}
return IR_REGSET_EMPTY;
}
static ir_reg ir_get_param_reg(ir_ctx *ctx, ir_ref ref)
{
ir_use_list *use_list = &ctx->use_lists[1];
int i;
ir_ref use, *p;
ir_insn *insn;
int int_param = 0;
int fp_param = 0;
int int_reg_params_count = IR_REG_INT_ARGS;
int fp_reg_params_count = IR_REG_FP_ARGS;
const int8_t *int_reg_params = _ir_int_reg_params;
const int8_t *fp_reg_params = _ir_fp_reg_params;
for (i = 0, p = &ctx->use_edges[use_list->refs]; i < use_list->count; i++, p++) {
use = *p;
insn = &ctx->ir_base[use];
if (insn->op == IR_PARAM) {
if (IR_IS_TYPE_INT(insn->type)) {
if (use == ref) {
if (int_param < int_reg_params_count) {
return int_reg_params[int_param];
} else {
return IR_REG_NONE;
}
}
int_param++;
} else if (IR_IS_TYPE_FP(insn->type)) {
if (use == ref) {
if (fp_param < fp_reg_params_count) {
return fp_reg_params[fp_param];
} else {
return IR_REG_NONE;
}
}
fp_param++;
} else {
IR_ASSERT(0);
}
}
}
return IR_REG_NONE;
}
static ir_reg ir_get_arg_reg(ir_ctx *ctx, ir_insn *insn, int op_num)
{
int j, n;
ir_type type;
int int_param = 0;
int fp_param = 0;
int int_reg_params_count = IR_REG_INT_ARGS;
int fp_reg_params_count = IR_REG_FP_ARGS;
const int8_t *int_reg_params = _ir_int_reg_params;
const int8_t *fp_reg_params = _ir_fp_reg_params;
n = ir_input_edges_count(ctx, insn);
for (j = 3; j <= n; j++) {
type = ctx->ir_base[insn->ops[j]].type;
if (IR_IS_TYPE_INT(type)) {
if (j == op_num) {
if (int_param < int_reg_params_count) {
return int_reg_params[int_param];
} else {
return IR_REG_NONE;
}
}
int_param++;
} else if (IR_IS_TYPE_FP(type)) {
if (j == op_num) {
if (fp_param < fp_reg_params_count) {
return fp_reg_params[fp_param];
} else {
return IR_REG_NONE;
}
}
fp_param++;
} else {
IR_ASSERT(0);
}
}
return IR_REG_NONE;
}
ir_reg ir_uses_fixed_reg(ir_ctx *ctx, ir_ref ref, int op_num)
{
ir_ref rule;
rule = ctx->rules[ref];
if (rule == IR_SHIFT) {
if (op_num == 2) {
return IR_REG_RCX;
}
} else if (rule == IR_MUL_INT || rule == IR_DIV_INT) {
if (op_num == 0 || op_num == 1) {
return IR_REG_RAX;
}
} else if (rule == IR_MOD_INT) {
if (op_num == 0) {
return IR_REG_RDX;
} else if (op_num == 1) {
return IR_REG_RAX;
}
} else if (rule == IR_RETURN_INT) {
if (op_num == 2) {
return IR_REG_RAX;
}
} else if (rule == IR_RETURN_FP) {
if (op_num == 2) {
return IR_REG_XMM0;
}
} else if (rule == IR_SKIP_REG) {
if (ctx->ir_base[ref].op == IR_PARAM && op_num == 0) {
return ir_get_param_reg(ctx, ref);
}
} else if (rule == IR_CALL || (rule == IR_TAILCALL && op_num > 0)) {
ir_insn *insn = &ctx->ir_base[ref];
if (op_num == 0) {
if (IR_IS_TYPE_INT(insn->type)) {
return IR_REG_RAX;
} else {
return IR_REG_XMM0;
}
} else {
return ir_get_arg_reg(ctx, insn, op_num);
}
}
return IR_REG_NONE;
}
bool ir_result_reuses_op1_reg(ir_ctx *ctx, ir_ref ref)
{
ir_ref rule;
rule = ctx->rules[ref];
switch (rule) {
case IR_BINOP_INT:
case IR_BINOP_SSE2:
case IR_SHIFT:
case IR_SHIFT_CONST:
// case IR_MUL_INT: // use fixed register
// case IR_DIV_INT: // use fixed register
case IR_COPY:
case IR_INC:
case IR_DEC:
case IR_MUL_2:
case IR_MUL_PWR2:
case IR_DIV_PWR2:
case IR_MOD_PWR2:
case IR_OP_INT:
case IR_OP_FP:
return 1;
}
return 0;
}
static uint32_t ir_match_insn(ir_ctx *ctx, ir_ref ref, ir_block *bb)
{
ir_insn *op2_insn;
ir_insn *insn = &ctx->ir_base[ref];
switch (insn->op) {
case IR_EQ:
case IR_NE:
case IR_LT:
case IR_GE:
case IR_LE:
case IR_GT:
case IR_ULT:
case IR_UGE:
case IR_ULE:
case IR_UGT:
if (IR_IS_TYPE_INT(ctx->ir_base[insn->op1].type)) {
return IR_CMP_INT;
} else {
return IR_CMP_FP;
}
break;
case IR_ADD:
case IR_SUB:
if (IR_IS_TYPE_INT(insn->type)) {
if ((ctx->flags & IR_OPT_CODEGEN) && IR_IS_CONST_REF(insn->op2)) {
op2_insn = &ctx->ir_base[insn->op2];
if (IR_IS_CONST_REF(insn->op1)) {
// const
} else if (op2_insn->val.i64 == 0) {
return IR_COPY_INT;
} else if (ir_type_size[insn->type] >= 4 && IR_IS_SIGNED_32BIT(op2_insn->val.i64)) {
if (insn->op1 > bb->start && insn->op1 < ref && ctx->use_lists[insn->op1].count == 1) {
if (!ctx->rules[insn->op1]) {
ctx->rules[insn->op1] = ir_match_insn(ctx, insn->op1, bb);
}
}
if (ctx->rules[insn->op1] == IR_LEA_SI) {
ctx->rules[insn->op1] = IR_SKIP;
return IR_LEA_SI_O; // lea ret, [op1.op1.reg*op1.op2.scale+op2.offset]
} else if (ctx->rules[insn->op1] == IR_LEA_SIB) {
ctx->rules[insn->op1] = IR_SKIP;
return IR_LEA_SIB_O; // lea ret, [op1.op1.reg+op1.op1.reg*op1.op2.scale+op2.offset]
} else if (ctx->rules[insn->op1] == IR_LEA_IB) {
ctx->rules[insn->op1] = IR_SKIP;
return IR_LEA_IB_O; // lea ret, [op1.op1.reg+op1.op2.reg+op2.offset]
}
return IR_LEA_OB; // lea ret, [op1.reg+op2.offset]
} else if (op2_insn->val.i64 == 1 || op2_insn->val.i64 == -1) {
if (insn->op == IR_ADD) {
if (op2_insn->val.i64 == 1) {
return IR_INC; // inc op1
} else {
return IR_DEC; // dec op1
}
} else {
if (op2_insn->val.i64 == 1) {
return IR_DEC; // dec op1
} else {
return IR_INC; // inc op1
}
}
}
} else if ((ctx->flags & IR_OPT_CODEGEN) && insn->op == IR_ADD && ir_type_size[insn->type] >= 4) {
if (insn->op1 > bb->start && insn->op1 < ref && ctx->use_lists[insn->op1].count == 1) {
if (!ctx->rules[insn->op1]) {
ctx->rules[insn->op1] = ir_match_insn(ctx, insn->op1, bb);
}
}
if (insn->op2 > bb->start && insn->op2 < ref && ctx->use_lists[insn->op2].count == 1) {
if (!ctx->rules[insn->op2]) {
ctx->rules[insn->op2] = ir_match_insn(ctx, insn->op2, bb);
}
}
if (ctx->rules[insn->op1] == IR_LEA_OB) {
ctx->rules[insn->op1] = IR_SKIP;
if (ctx->rules[insn->op2] == IR_LEA_SI) {
ctx->rules[insn->op2] = IR_SKIP;
return IR_LEA_OB_SI; // lea ret, [op1.op1.reg+op1.op2.offset+op2.op1.reg*op2.op2.scale]
}
return IR_LEA_OB_I; // lea ret, [op1.op1.reg+op1.op2.offset+op2.reg]
}
if (ctx->rules[insn->op2] == IR_LEA_OB) {
ctx->rules[insn->op2] = IR_SKIP;
if (ctx->rules[insn->op1] == IR_LEA_SI) {
ctx->rules[insn->op1] = IR_SKIP;
return IR_LEA_SI_OB; // lea ret, [op1.op1.reg*op1.op2.scale+op2.op1.reg+op2.op2.offset]
}
return IR_LEA_I_OB; // lea ret, [op1.reg+op2.op1.reg+op2.op2.offset]
}
return IR_LEA_IB; // lea ret, [op1.reg+op2.reg]
}
return IR_BINOP_INT;
} else if (ctx->flags & IR_AVX) {
return IR_BINOP_AVX;
} else {
return IR_BINOP_SSE2;
}
break;
case IR_MUL:
if (IR_IS_TYPE_INT(insn->type)) {
if ((ctx->flags & IR_OPT_CODEGEN) && IR_IS_CONST_REF(insn->op2)) {
op2_insn = &ctx->ir_base[insn->op2];
if (IR_IS_CONST_REF(insn->op1)) {
// const
} else if (op2_insn->val.u64 == 0) {
// 0
} else if (op2_insn->val.u64 == 1) {
return IR_COPY_INT;
} else if (ir_type_size[insn->type] >= 4 &&
(op2_insn->val.u64 == 2 || op2_insn->val.u64 == 4 || op2_insn->val.u64 == 8)) {
return IR_LEA_SI; // lea ret, [op1.reg*op2.scale]
} else if (ir_type_size[insn->type] >= 4 &&
(op2_insn->val.u64 == 3 || op2_insn->val.u64 == 5 || op2_insn->val.u64 == 9)) {
return IR_LEA_SIB; // lea ret, [op1.reg+op1.reg*op2.scale]
} else if (op2_insn->val.u64 == 2) {
return IR_MUL_2; // add op1, op1
} else if (IR_IS_POWER_OF_TWO(op2_insn->val.u64)) {
return IR_MUL_PWR2; // shl op1, IR_LOG2(op2_insn->val.u64)
}
}
return (IR_IS_TYPE_SIGNED(insn->type) && ir_type_size[insn->type] != 1) ? IR_BINOP_INT : IR_MUL_INT;
} else if (ctx->flags & IR_AVX) {
return IR_BINOP_AVX;
} else {
return IR_BINOP_SSE2;
}
break;
case IR_DIV:
if (IR_IS_TYPE_INT(insn->type)) {
if ((ctx->flags & IR_OPT_CODEGEN) && IR_IS_CONST_REF(insn->op2)) {
op2_insn = &ctx->ir_base[insn->op2];
if (IR_IS_CONST_REF(insn->op1)) {
// const
} else if (op2_insn->val.u64 == 1) {
return IR_COPY_INT;
} else if (IR_IS_POWER_OF_TWO(op2_insn->val.u64)) {
return IR_DIV_PWR2; // shr op1, IR_LOG2(op2_insn->val.u64)
}
}
return IR_DIV_INT;
} else if (ctx->flags & IR_AVX) {
return IR_BINOP_AVX;
} else {
return IR_BINOP_SSE2;
}
break;
case IR_MOD:
if ((ctx->flags & IR_OPT_CODEGEN) && IR_IS_CONST_REF(insn->op2)) {
op2_insn = &ctx->ir_base[insn->op2];
if (IR_IS_CONST_REF(insn->op1)) {
// const
} else if (IR_IS_POWER_OF_TWO(op2_insn->val.u64)) {
return IR_MOD_PWR2; // and op1, IR_LOG2(op2_insn->val.u64)-1
}
}
return IR_MOD_INT;
// case IR_CAST:
// case IR_ADD_OV:
// case IR_SUB_OV:
// case IR_MUL_OV:
// case IR_OVERFLOW:
case IR_BSWAP:
case IR_NOT:
if (insn->type == IR_BOOL) {
if (IR_IS_TYPE_INT(ctx->ir_base[insn->op1].type)) {
return IR_BOOL_NOT_INT;
} else {
IR_ASSERT(0); // TODO: IR_BOOL_NOT_FP
}
} else if (IR_IS_TYPE_INT(insn->type)) {
return IR_OP_INT;
} else {
IR_ASSERT(0);
}
break;
case IR_NEG:
if (IR_IS_TYPE_INT(insn->type)) {
return IR_OP_INT;
} else {
return IR_OP_FP;
}
case IR_ABS:
if (IR_IS_TYPE_INT(insn->type)) {
return IR_ABS_INT; // movl %edi, %eax; negl %eax; cmovs %edi, %eax
} else {
return IR_OP_FP;
}
case IR_OR:
if ((ctx->flags & IR_OPT_CODEGEN) && IR_IS_CONST_REF(insn->op2)) {
op2_insn = &ctx->ir_base[insn->op2];
if (IR_IS_CONST_REF(insn->op1)) {
// const
} else if (op2_insn->val.i64 == 0) {
return IR_COPY_INT;
} else if (op2_insn->val.i64 == -1) { // TODO: type len
// -1
}
}
return IR_BINOP_INT;
case IR_AND:
if ((ctx->flags & IR_OPT_CODEGEN) && IR_IS_CONST_REF(insn->op2)) {
op2_insn = &ctx->ir_base[insn->op2];
if (IR_IS_CONST_REF(insn->op1)) {
// const
} else if (op2_insn->val.i64 == 0) {
// 0
} else if (op2_insn->val.i64 == -1) { // TODO: type len
return IR_COPY_INT;
}
}
return IR_BINOP_INT;
case IR_XOR:
if ((ctx->flags & IR_OPT_CODEGEN) && IR_IS_CONST_REF(insn->op2)) {
op2_insn = &ctx->ir_base[insn->op2];
if (IR_IS_CONST_REF(insn->op1)) {
// const
}
}
return IR_BINOP_INT;
case IR_SHL:
if (IR_IS_CONST_REF(insn->op2)) {
if (ctx->flags & IR_OPT_CODEGEN) {
op2_insn = &ctx->ir_base[insn->op2];
if (IR_IS_CONST_REF(insn->op1)) {
// const
} else if (op2_insn->val.u64 == 0) {
return IR_COPY_INT;
} else if (ir_type_size[insn->type] >= 4) {
if (op2_insn->val.u64 == 1) {
// lea [op1*2]
} else if (op2_insn->val.u64 == 2) {
// lea [op1*4]
} else if (op2_insn->val.u64 == 3) {
// lea [op1*8]
}
}
}
return IR_SHIFT_CONST;
}
return IR_SHIFT;
case IR_SHR:
case IR_SAR:
case IR_ROL:
case IR_ROR:
if (IR_IS_CONST_REF(insn->op2)) {
if (ctx->flags & IR_OPT_CODEGEN) {
op2_insn = &ctx->ir_base[insn->op2];
if (IR_IS_CONST_REF(insn->op1)) {
// const
} else if (op2_insn->val.u64 == 0) {
return IR_COPY_INT;
}
}
return IR_SHIFT_CONST;
}
return IR_SHIFT;
// case IR_MIN:
// case IR_MAX:
// case IR_COND:
case IR_COPY:
if (IR_IS_TYPE_INT(insn->type)) {
return IR_COPY_INT;
} else {
return IR_COPY_FP;
}
break;
case IR_PHI:
case IR_PI:
case IR_PARAM:
return IR_SKIP_REG;
case IR_CALL:
ctx->flags |= IR_HAS_CALLS;
return IR_CALL;
case IR_VAR:
if (ctx->use_lists[ref].count > 0) {
return IR_VAR;
} else {
return IR_SKIP;
}
break;
case IR_ALLOCA:
ctx->flags |= IR_USE_FRAME_POINTER;
return IR_ALLOCA;
case IR_VLOAD:
if (IR_IS_TYPE_INT(insn->type)) {
return IR_VLOAD_INT;
} else {
return IR_VLOAD_FP;
}
break;
case IR_VSTORE:
if (IR_IS_TYPE_INT(ctx->ir_base[insn->op3].type)) {
return IR_VSTORE_INT;
} else {
return IR_VSTORE_FP;
}
break;
case IR_LOAD:
if (IR_IS_TYPE_INT(ctx->ir_base[insn->op3].type)) {
return IR_LOAD_INT;
} else {
return IR_LOAD_FP;
}
break;
case IR_STORE:
if (IR_IS_TYPE_INT(ctx->ir_base[insn->op3].type)) {
return IR_STORE_INT;
} else {
return IR_STORE_FP;
}
break;
case IR_START:
case IR_BEGIN:
// case IR_END:
case IR_IF_TRUE:
case IR_IF_FALSE:
case IR_CASE_VAL:
case IR_CASE_DEFAULT:
case IR_MERGE:
case IR_LOOP_BEGIN:
// case IR_LOOP_END:
case IR_LOOP_EXIT:
case IR_UNREACHABLE:
return IR_SKIP;
case IR_RETURN:
if (!insn->op2) {
return IR_RETURN_VOID;
} else if (IR_IS_TYPE_INT(ctx->ir_base[insn->op2].type)) {
return IR_RETURN_INT;
} else {
return IR_RETURN_FP;
}
case IR_IF:
if (insn->op2 > bb->start && insn->op2 < ref && ctx->use_lists[insn->op2].count == 1) {
op2_insn = &ctx->ir_base[insn->op2];
if (op2_insn
&& op2_insn->op >= IR_EQ
&& op2_insn->op <= IR_UGT) {
ctx->rules[insn->op2] = IR_SKIP;
if (IR_IS_TYPE_INT(ctx->ir_base[op2_insn->op1].type)) {
return IR_CMP_AND_BRANCH_INT;
} else {
return IR_CMP_AND_BRANCH_FP;
}
}
}
if (IR_IS_TYPE_INT(ctx->ir_base[insn->op2].type)) {
return IR_IF_INT;
} else {
IR_ASSERT(0 && "NIY IR_IF_FP");
}
default:
break;
}
return insn->op;
}
int ir_match(ir_ctx *ctx)
{
int b, n;
ir_ref i;
ir_block *bb;
ir_insn *insn;
if (!ctx->prev_insn_len) {
ctx->prev_insn_len = ir_mem_malloc(ctx->insns_count * sizeof(uint32_t));
for (b = 1, bb = ctx->cfg_blocks + b; b <= ctx->cfg_blocks_count; b++, bb++) {
n = b; /* The first insn of BB keeps BB number in prev_insn_len[] */
for (i = bb->start, insn = ctx->ir_base + i; i <= bb->end;) {
ctx->prev_insn_len[i] = n; /* The first insn of BB keeps BB number in prev_insn_len[] */
n = ir_operands_count(ctx, insn);
n = 1 + (n >> 2); // support for multi-word instructions like MERGE and PHI
i += n;
insn += n;
}
}
}
ctx->rules = ir_mem_calloc(ctx->insns_count, sizeof(uint32_t));
for (b = ctx->cfg_blocks_count, bb = ctx->cfg_blocks + b; b > 0; b--, bb--) {
for (i = bb->end; i >= bb->start; i -= ctx->prev_insn_len[i]) {
insn = &ctx->ir_base[i];
if (!ctx->rules[i]) {
// if (ctx->rules[i] != IR_SKIP) {
ctx->rules[i] = ir_match_insn(ctx, i, bb);
}
}
}
return 1;
}
/* code genertion */
static int ir_skip_empty_blocks(ir_ctx *ctx, int b)
{
while (ctx->cfg_blocks[b].flags & IR_BB_MAY_SKIP) {
b++;
}
return b;
}
static ir_reg ir_vreg_reg(ir_ctx *ctx, ir_ref v)
{
return v < 0 ? IR_REG_NONE : ctx->live_intervals[v]->reg;
}
static ir_reg ir_vreg_spill_slot(ir_ctx *ctx, ir_ref v)
{
ir_backend_data *data = ctx->data;
int32_t offset;
IR_ASSERT(v >= 0);
offset = ctx->live_intervals[v]->stack_spill_pos;
IR_ASSERT(offset != 0);
if (ctx->flags & IR_USE_FRAME_POINTER) {
return offset - data->stack_frame_size - data->stack_frame_alignment - sizeof(void*);
} else {
return offset + data->stack_frame_alignment - sizeof(void*);
}
}
static ir_reg ir_ref_reg(ir_ctx *ctx, ir_ref ref)
{
return ref < 0 ? IR_REG_NONE : ctx->live_intervals[ctx->vregs[ref]]->reg;
}
static ir_reg ir_ref_spill_slot(ir_ctx *ctx, ir_ref ref)
{
ir_backend_data *data = ctx->data;
int32_t offset;
IR_ASSERT(ref >= 0);
offset = ctx->live_intervals[ctx->vregs[ref]]->stack_spill_pos;
IR_ASSERT(offset != 0);
if (ctx->flags & IR_USE_FRAME_POINTER) {
return data->stack_frame_size - data->stack_frame_alignment + offset - sizeof(void*);
} else {
return offset + data->stack_frame_alignment - sizeof(void*);
}
}
static bool ir_last_use(ir_ctx *ctx, ir_ref ref)
{
// TODO:
return 0;
}
static void ir_emit_load(ir_ctx *ctx, ir_type type, ir_ref src, ir_reg reg)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
| ASM_REG_REF_MOV type, reg, src
}
static void ir_emit_store(ir_ctx *ctx, ir_type type, ir_reg reg, ir_ref dst)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
| ASM_REF_REG_OP mov, type, dst, reg
}
static void ir_emit_fp_load(ir_ctx *ctx, ir_type type, ir_ref src, ir_reg reg)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
if (IR_IS_CONST_REF(src)) {
ir_insn *insn = &ctx->ir_base[src];
if (insn->type == IR_FLOAT && insn->val.f == 0) {
if (ctx->flags & IR_AVX) {
| vxorps xmm(reg-IR_REG_XMM0), xmm(reg-IR_REG_XMM0), xmm(reg-IR_REG_XMM0)
} else {
| xorps xmm(reg-IR_REG_XMM0), xmm(reg-IR_REG_XMM0)
}
return;
} else if (insn->type == IR_DOUBLE && insn->val.d == 0) {
if (ctx->flags & IR_AVX) {
| vxorpd xmm(reg-IR_REG_XMM0), xmm(reg-IR_REG_XMM0), xmm(reg-IR_REG_XMM0)
} else {
| xorpd xmm(reg-IR_REG_XMM0), xmm(reg-IR_REG_XMM0)
}
return;
}
}
| ASM_FP_REG_REF_MOV type, reg, src
}
static void ir_emit_fp_store(ir_ctx *ctx, ir_type type, ir_reg reg, ir_ref dst)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
| ASM_FP_REF_REG_MOV type, dst, reg
}
static void ir_emit_prologue(ir_ctx *ctx)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
if (ctx->flags & IR_USE_FRAME_POINTER) {
| push rbp
| mov rbp, rsp
}
if (data->stack_frame_size) {
| sub rsp, data->stack_frame_size
}
if (data->used_preserved_regs) {
int offset;
uint32_t i;
if (ctx->flags & IR_USE_FRAME_POINTER) {
offset = -(int)sizeof(void*);
} else {
offset = data->stack_frame_size - (int)sizeof(void*);
}
for (i = 0; i < IR_REG_NUM; i++) {
if (IR_REGSET_IN(data->used_preserved_regs, i)) {
if (i < IR_REG_FP_FIRST) {
ir_reg fp = (ctx->flags & IR_USE_FRAME_POINTER) ? IR_REG_RBP : IR_REG_RSP;
| mov aword [Ra(fp)+offset], Ra(i)
offset -= sizeof(void*);
} else {
IR_ASSERT(0 && "NIY FP register saing");
}
}
}
}
}
static void ir_emit_epilogue(ir_ctx *ctx)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
if (data->used_preserved_regs) {
int offset;
uint32_t i;
if (ctx->flags & IR_USE_FRAME_POINTER) {
offset = -(int)sizeof(void*);
} else {
offset = data->stack_frame_size - (int)sizeof(void*);
}
for (i = 0; i < IR_REG_NUM; i++) {
if (IR_REGSET_IN(data->used_preserved_regs, i)) {
if (i < IR_REG_FP_FIRST) {
ir_reg fp = (ctx->flags & IR_USE_FRAME_POINTER) ? IR_REG_RBP : IR_REG_RSP;
| mov Ra(i), aword [Ra(fp)+offset]
offset -= sizeof(void*);
} else {
IR_ASSERT(0 && "NIY FP register saing");
}
}
}
}
if (ctx->flags & IR_USE_FRAME_POINTER) {
| mov rsp, rbp
| pop rbp
} else if (data->stack_frame_size) {
| add rsp, data->stack_frame_size
}
}
void ir_emit_binop_int(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_type type = insn->type;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_reg op2_reg = ir_ref_reg(ctx, insn->op2);
ir_reg reg;
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
if (def_reg >= 0) {
reg = def_reg;
} else if (op1_reg >= 0 && ir_last_use(ctx, insn->op1)) {
reg = op1_reg;
} else {
// TODO: add $imm, mem
// TODO: commutative insns
reg = IR_REG_RAX; // TODO: temporary register
}
if (op1_reg != reg) {
ir_emit_load(ctx, type, insn->op1, reg);
}
if (op2_reg < 0 && insn->op1 == insn->op2) {
op2_reg = reg;
}
if (op2_reg < 0 && IR_IS_CONST_REF(insn->op2) && ir_type_size[type] == 8 && !IR_IS_32BIT(type, ctx->ir_base[insn->op2].val)) {
op2_reg = (reg == def_reg && reg != IR_REG_RAX) ? IR_REG_RAX : IR_REG_RDX; // TODO: temporary register for 64-bit constant
ir_emit_load(ctx, type, insn->op2, op2_reg);
}
if (op2_reg >= 0) {
switch (insn->op) {
case IR_ADD:
| ASM_REG_REG_OP add, type, reg, op2_reg
break;
case IR_SUB:
| ASM_REG_REG_OP sub, type, reg, op2_reg
break;
case IR_MUL:
| ASM_REG_REG_IMUL type, reg, op2_reg
break;
case IR_OR:
| ASM_REG_REG_OP or, type, reg, op2_reg
break;
case IR_AND:
| ASM_REG_REG_OP and, type, reg, op2_reg
break;
case IR_XOR:
| ASM_REG_REG_OP xor, type, reg, op2_reg
break;
default:
IR_ASSERT(0 && "NIY binary op");
break;
}
} else {
switch (insn->op) {
case IR_ADD:
| ASM_REG_REF_OP add, type, reg, insn->op2
break;
case IR_SUB:
| ASM_REG_REF_OP sub, type, reg, insn->op2
break;
case IR_MUL:
| ASM_REG_REF_IMUL type, reg, insn->op2
break;
case IR_OR:
| ASM_REG_REF_OP or, type, reg, insn->op2
break;
case IR_AND:
| ASM_REG_REF_OP and, type, reg, insn->op2
break;
case IR_XOR:
| ASM_REG_REF_OP xor, type, reg, insn->op2
break;
default:
IR_ASSERT(0 && "NIY binary op");
break;
}
}
if (def_reg != reg) {
ir_emit_store(ctx, type, reg, def);
}
}
void ir_emit_incdec(ir_ctx *ctx, uint32_t rule, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_reg reg;
if (def_reg >= 0) {
reg = def_reg;
} else if (op1_reg >= 0 && ir_last_use(ctx, insn->op1)) {
reg = op1_reg;
} else {
reg = IR_REG_RAX; // TODO: temporary register
}
if (op1_reg != reg) {
ir_emit_load(ctx, insn->type, insn->op1, reg);
}
if (rule == IR_INC) {
| ASM_REG_OP inc, insn->type, reg
} else {
| ASM_REG_OP dec, insn->type, reg
}
if (def_reg != reg) {
ir_emit_store(ctx, insn->type, reg, def);
}
}
void ir_emit_mul2(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_reg reg;
if (def_reg >= 0) {
reg = def_reg;
} else if (op1_reg >= 0 && ir_last_use(ctx, insn->op1)) {
reg = op1_reg;
} else {
reg = IR_REG_RAX; // TODO: temporary register
}
if (op1_reg != reg) {
ir_emit_load(ctx, insn->type, insn->op1, reg);
}
| ASM_REG_REG_OP add, insn->type, reg, reg
if (def_reg != reg) {
ir_emit_store(ctx, insn->type, reg, def);
}
}
void ir_emit_mul_pwr2(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_reg reg;
uint32_t shift = IR_LOG2(ctx->ir_base[insn->op2].val.u64);
if (def_reg >= 0) {
reg = def_reg;
} else if (op1_reg >= 0 && ir_last_use(ctx, insn->op1)) {
reg = op1_reg;
} else {
reg = IR_REG_RAX; // TODO: temporary register
}
if (op1_reg != reg) {
ir_emit_load(ctx, insn->type, insn->op1, reg);
}
| ASM_REG_IMM_OP shl, insn->type, reg, shift
if (def_reg != reg) {
ir_emit_store(ctx, insn->type, reg, def);
}
}
void ir_emit_div_pwr2(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
uint32_t shift = IR_LOG2(ctx->ir_base[insn->op2].val.u64);
ir_reg reg;
if (def_reg >= 0) {
reg = def_reg;
} else if (op1_reg >= 0 && ir_last_use(ctx, insn->op1)) {
reg = op1_reg;
} else {
reg = IR_REG_RAX; // TODO: temporary register
}
if (op1_reg != reg) {
ir_emit_load(ctx, insn->type, insn->op1, reg);
}
| ASM_REG_IMM_OP shr, insn->type, reg, shift
if (def_reg != reg) {
ir_emit_store(ctx, insn->type, reg, def);
}
}
void ir_emit_mod_pwr2(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
uint64_t mask = ctx->ir_base[insn->op2].val.u64 - 1;
ir_reg reg;
if (def_reg >= 0) {
reg = def_reg;
} else if (op1_reg >= 0 && ir_last_use(ctx, insn->op1)) {
reg = op1_reg;
} else {
reg = IR_REG_RAX; // TODO: temporary register
}
if (IR_IS_UNSIGNED_32BIT(mask)) {
if (op1_reg != reg) {
ir_emit_load(ctx, insn->type, insn->op1, reg);
}
| ASM_REG_IMM_OP and, insn->type, reg, mask
} else {
ir_emit_load(ctx, insn->type, insn->op2, reg);
| ASM_REG_REF_OP and, insn->type, reg, insn->op1
}
if (def_reg != reg) {
ir_emit_store(ctx, insn->type, reg, def);
}
}
void ir_emit_shift(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_reg op2_reg = ir_ref_reg(ctx, insn->op2);
ir_reg reg;
if (def_reg >= 0) {
reg = def_reg;
} else if (op1_reg >= 0 && ir_last_use(ctx, insn->op1)) {
reg = op1_reg;
} else {
reg = IR_REG_RAX; // TODO: temporary register
}
IR_ASSERT(reg != IR_REG_RCX);
if (op1_reg != reg) {
if (reg == op2_reg) {
ir_emit_load(ctx, insn->type, insn->op2, IR_REG_RCX);
op2_reg = IR_REG_RCX;
}
ir_emit_load(ctx, insn->type, insn->op1, reg);
}
if (op2_reg != IR_REG_RCX) {
ir_emit_load(ctx, insn->type, insn->op2, IR_REG_RCX);
}
switch (insn->op) {
case IR_SHL:
| ASM_REG_IMM_OP shl, insn->type, reg, cl
break;
case IR_SHR:
| ASM_REG_IMM_OP shr, insn->type, reg, cl
break;
case IR_SAR:
| ASM_REG_IMM_OP sar, insn->type, reg, cl
break;
case IR_ROL:
| ASM_REG_IMM_OP rol, insn->type, reg, cl
break;
case IR_ROR:
| ASM_REG_IMM_OP ror, insn->type, reg, cl
break;
default:
IR_ASSERT(0);
}
if (def_reg != reg) {
ir_emit_store(ctx, insn->type, reg, def);
}
}
void ir_emit_shift_const(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
uint32_t shift = ctx->ir_base[insn->op2].val.u64;
ir_reg reg;
if (def_reg >= 0) {
reg = def_reg;
} else if (op1_reg >= 0 && ir_last_use(ctx, insn->op1)) {
reg = op1_reg;
} else {
reg = IR_REG_RAX; // TODO: temporary register
}
if (op1_reg != reg) {
ir_emit_load(ctx, insn->type, insn->op1, reg);
}
switch (insn->op) {
case IR_SHL:
| ASM_REG_IMM_OP shl, insn->type, reg, shift
break;
case IR_SHR:
| ASM_REG_IMM_OP shr, insn->type, reg, shift
break;
case IR_SAR:
| ASM_REG_IMM_OP sar, insn->type, reg, shift
break;
case IR_ROL:
| ASM_REG_IMM_OP rol, insn->type, reg, shift
break;
case IR_ROR:
| ASM_REG_IMM_OP ror, insn->type, reg, shift
break;
default:
IR_ASSERT(0);
}
if (def_reg != reg) {
ir_emit_store(ctx, insn->type, reg, def);
}
}
void ir_emit_op_int(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_reg reg;
if (def_reg >= 0) {
reg = def_reg;
} else if (op1_reg >= 0 && ir_last_use(ctx, insn->op1)) {
reg = op1_reg;
} else {
reg = IR_REG_RAX; // TODO: temporary register
}
if (op1_reg != reg) {
ir_emit_load(ctx, insn->type, insn->op1, reg);
}
if (insn->op == IR_NOT) {
| ASM_REG_OP not, insn->type, reg
} else if (insn->op == IR_NEG) {
| ASM_REG_OP neg, insn->type, reg
} else if (insn->op == IR_BSWAP) {
switch (ir_type_size[insn->type]) {
case 4:
| bswap Rd(reg)
break;
case 8:
| bswap Rq(reg)
break;
default:
IR_ASSERT(0);
}
} else {
IR_ASSERT(0);
}
if (def_reg != reg) {
ir_emit_store(ctx, insn->type, reg, def);
}
}
void ir_emit_abs_int(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_reg reg;
if (def_reg >= 0) {
reg = def_reg;
} else {
reg = IR_REG_RAX; // TODO: temporary register
}
if (op1_reg < 0) {
op1_reg = IR_REG_RDX; // TODO: temporary register
ir_emit_load(ctx, insn->type, insn->op1, op1_reg);
}
| ASM_REG_REG_OP mov, insn->type, reg, op1_reg
| ASM_REG_OP neg, insn->type, reg
switch (ir_type_size[insn->type]) {
case 1:
case 2:
| cmovs Rw(reg), Rw(op1_reg)
break;
case 4:
| cmovs Rd(reg), Rd(op1_reg)
break;
case 8:
| cmovs Rq(reg), Rq(op1_reg)
break;
default:
IR_ASSERT(0);
}
if (def_reg != reg) {
ir_emit_store(ctx, insn->type, reg, def);
}
}
void ir_rodata(ir_ctx *ctx)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
|.rodata
if (!data->rodata_label) {
int label = data->rodata_label = ctx->cfg_blocks_count + ctx->consts_count + 2;
|=>label:
}
}
void ir_emit_op_fp(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_reg reg;
if (def_reg >= 0) {
reg = def_reg;
} else if (op1_reg >= 0 && ir_last_use(ctx, insn->op1)) {
reg = op1_reg;
} else {
reg = IR_REG_XMM7; // TODO: temporary register
}
if (op1_reg != reg) {
ir_emit_fp_load(ctx, insn->type, insn->op1, reg);
}
if (insn->op == IR_NEG) {
if (insn->type == IR_DOUBLE) {
if (!data->double_neg_const) {
data->double_neg_const = 1;
ir_rodata(ctx);
|.align 8
|->double_neg_const:
|.dword 0, 0x80000000, 0, 0
|.code
}
if (ctx->flags & IR_AVX) {
| vxorpd xmm(reg-IR_REG_XMM0), xmm(reg-IR_REG_XMM0), [->double_neg_const]
} else {
| xorpd xmm(reg-IR_REG_XMM0), [->double_neg_const]
}
} else {
IR_ASSERT(insn->type == IR_FLOAT);
if (!data->float_neg_const) {
data->float_neg_const = 1;
ir_rodata(ctx);
|.align 8
|->float_neg_const:
|.dword 0x80000000, 0, 0, 0
|.code
}
if (ctx->flags & IR_AVX) {
| vxorps xmm(reg-IR_REG_XMM0), xmm(reg-IR_REG_XMM0), [->float_neg_const]
} else {
| xorps xmm(reg-IR_REG_XMM0), [->float_neg_const]
}
}
} else if (insn->op == IR_ABS) {
if (insn->type == IR_DOUBLE) {
if (!data->double_abs_const) {
data->double_abs_const = 1;
ir_rodata(ctx);
|.align 8
|->double_abs_const:
|.dword 0xffffffff, 0x7fffffff, 0, 0
|.code
}
if (ctx->flags & IR_AVX) {
| vandpd xmm(reg-IR_REG_XMM0), xmm(reg-IR_REG_XMM0), [->double_abs_const]
} else {
| andpd xmm(reg-IR_REG_XMM0), [->double_abs_const]
}
} else {
IR_ASSERT(insn->type == IR_FLOAT);
if (!data->float_abs_const) {
data->float_abs_const = 1;
ir_rodata(ctx);
|.align 8
|->float_abs_const:
|.dword 0x7fffffff, 0, 0, 0
|.code
}
if (ctx->flags & IR_AVX) {
| vandps xmm(reg-IR_REG_XMM0), xmm(reg-IR_REG_XMM0), [->float_abs_const]
} else {
| andps xmm(reg-IR_REG_XMM0), [->float_abs_const]
}
}
} else {
IR_ASSERT(0);
}
if (def_reg != reg) {
ir_emit_fp_store(ctx, insn->type, reg, def);
}
}
void ir_emit_bool_not_int(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_reg reg;
ir_type type = ctx->ir_base[insn->op1].type;
if (op1_reg >= 0) {
| ASM_REG_REG_OP test, type, op1_reg, op1_reg
} else {
| ASM_REF_IMM_OP cmp, type, insn->op1, 0
}
if (def_reg >= 0) {
reg = def_reg;
} else if (op1_reg >= 0 && ir_last_use(ctx, insn->op1)) {
reg = op1_reg;
} else {
reg = IR_REG_RAX; // TODO: temporary register
}
| setne Rb(reg)
if (def_reg != reg) {
ir_emit_store(ctx, insn->type, reg, def);
}
}
void ir_emit_mul_div_mod(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_type type = insn->type;
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_reg op2_reg = ir_ref_reg(ctx, insn->op2);
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
if (op1_reg != IR_REG_RAX) {
ir_emit_load(ctx, type, insn->op1, IR_REG_RAX);
}
if (op2_reg < 0) {
if (insn->op1 == insn->op2) {
op2_reg = IR_REG_RAX;
} else if (IR_IS_CONST_REF(insn->op2)) {
if (insn->op == IR_MUL) {
op2_reg = IR_REG_RDX;
ir_emit_load(ctx, type, insn->op2, IR_REG_RDX); // TODO: temporary register 2
} else {
op2_reg = IR_REG_RCX;
ir_emit_load(ctx, type, insn->op2, IR_REG_RCX); // TODO: temporary register 2
}
}
}
if (insn->op == IR_MUL) {
if (IR_IS_TYPE_SIGNED(insn->type)) {
if (op2_reg >= 0) {
| ASM_REG_OP imul, type, op2_reg
} else {
| ASM_REF_OP imul, type, insn->op2
}
} else {
if (op2_reg >= 0) {
| ASM_REG_OP mul, type, op2_reg
} else {
| ASM_REF_OP mul, type, insn->op2
}
}
} else {
if (IR_IS_TYPE_SIGNED(type)) {
| cdq
if (op2_reg >= 0) {
| ASM_REG_OP idiv, type, op2_reg
} else {
| ASM_REF_OP idiv, type, insn->op2
}
} else {
| ASM_REG_REG_OP xor, type, IR_REG_RDX, IR_REG_RDX
if (op2_reg >= 0) {
| ASM_REG_OP div, type, op2_reg
} else {
| ASM_REF_OP div, type, insn->op2
}
}
}
if (insn->op == IR_MUL || insn->op == IR_DIV) {
if (def_reg != IR_REG_RAX) {
ir_emit_store(ctx, type, IR_REG_RAX, def);
}
} else if (insn->op == IR_MOD) {
if (ir_type_size[type] == 1) {
ir_reg reg = ir_ref_reg(ctx, def);
if (reg >= 0) {
| mov al, ah
| mov Rb(reg), al
} else {
int32_t offset = ir_ref_spill_slot(ctx, def);
if (ctx->flags & IR_USE_FRAME_POINTER) {
| mov byte [rbp+offset], ah
} else {
| mov byte [rsp+offset], ah
}
}
} else if (def_reg != IR_REG_RDX) {
ir_emit_store(ctx, type, IR_REG_RDX, def);
}
} else {
IR_ASSERT(0);
}
}
void ir_emit_binop_sse2(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_type type = insn->type;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_reg op2_reg = ir_ref_reg(ctx, insn->op2);
ir_reg reg;
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
if (def_reg >= 0) {
reg = def_reg;
} else if (op1_reg >= 0 && ir_last_use(ctx, insn->op1)) {
reg = op1_reg;
} else {
// TODO: commutative insns
reg = IR_REG_XMM7; // TODO: temporary register
}
if (op1_reg != reg) {
ir_emit_fp_load(ctx, type, insn->op1, reg);
}
if (op2_reg < 0 && insn->op1 == insn->op2) {
op2_reg = reg;
}
if (op2_reg >= 0) {
switch (insn->op) {
case IR_ADD:
| ASM_SSE2_REG_REG_OP addss, addsd, type, reg, op2_reg
break;
case IR_SUB:
| ASM_SSE2_REG_REG_OP subss, subsd, type, reg, op2_reg
break;
case IR_MUL:
| ASM_SSE2_REG_REG_OP mulss, mulsd, type, reg, op2_reg
break;
case IR_DIV:
| ASM_SSE2_REG_REG_OP divss, divsd, type, reg, op2_reg
break;
default:
IR_ASSERT(0 && "NIY binary op");
break;
}
} else {
switch (insn->op) {
case IR_ADD:
| ASM_SSE2_REG_REF_OP addss, addsd, type, reg, insn->op2
break;
case IR_SUB:
| ASM_SSE2_REG_REF_OP subss, subsd, type, reg, insn->op2
break;
case IR_MUL:
| ASM_SSE2_REG_REF_OP mulss, mulsd, type, reg, insn->op2
break;
case IR_DIV:
| ASM_SSE2_REG_REF_OP divss, divsd, type, reg, insn->op2
break;
default:
IR_ASSERT(0 && "NIY binary op");
break;
}
}
if (def_reg != reg) {
ir_emit_fp_store(ctx, type, reg, def);
}
}
void ir_emit_binop_avx(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_type type = insn->type;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_reg op2_reg = ir_ref_reg(ctx, insn->op2);
ir_reg reg;
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
if (def_reg >= 0) {
reg = def_reg;
} else if (op1_reg >= 0 && ir_last_use(ctx, insn->op1)) {
reg = op1_reg;
} else {
// TODO: commutative insns
reg = IR_REG_XMM7; // TODO: temporary register
}
if (op1_reg < 0) {
ir_emit_fp_load(ctx, type, insn->op1, reg);
op1_reg = reg;
}
if (op2_reg < 0 && insn->op1 == insn->op2) {
op2_reg = reg;
}
if (op2_reg >= 0) {
switch (insn->op) {
case IR_ADD:
| ASM_AVX_REG_REG_REG_OP vaddss, vaddsd, type, reg, op1_reg, op2_reg
break;
case IR_SUB:
| ASM_AVX_REG_REG_REG_OP vsubss, vsubsd, type, reg, op1_reg, op2_reg
break;
case IR_MUL:
| ASM_AVX_REG_REG_REG_OP vmulss, vmulsd, type, reg, op1_reg, op2_reg
break;
case IR_DIV:
| ASM_AVX_REG_REG_REG_OP vdivss, vdivsd, type, reg, op1_reg, op2_reg
break;
default:
IR_ASSERT(0 && "NIY binary op");
break;
}
} else {
switch (insn->op) {
case IR_ADD:
| ASM_AVX_REG_REG_REF_OP vaddss, vaddsd, type, reg, op1_reg, insn->op2
break;
case IR_SUB:
| ASM_AVX_REG_REG_REF_OP vsubss, vsubsd, type, reg, op1_reg, insn->op2
break;
case IR_MUL:
| ASM_AVX_REG_REG_REF_OP vmulss, vmulsd, type, reg, op1_reg, insn->op2
break;
case IR_DIV:
| ASM_AVX_REG_REG_REF_OP vdivss, vdivsd, type, reg, op1_reg, insn->op2
break;
default:
IR_ASSERT(0 && "NIY binary op");
break;
}
}
if (def_reg != reg) {
ir_emit_fp_store(ctx, type, reg, def);
}
}
void ir_emit_cmp_int(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_type type = ctx->ir_base[insn->op1].type;
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_reg op2_reg = ir_ref_reg(ctx, insn->op2);
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg reg;
ir_op op;
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
if (def_reg >= 0) {
reg = def_reg;
} else {
reg = IR_REG_RAX; // TODO: temporary register
}
if (op2_reg < 0 && IR_IS_CONST_REF(insn->op2) && ir_type_size[type] == 8 && !IR_IS_32BIT(type, ctx->ir_base[insn->op2].val)) {
op2_reg = IR_REG_RAX; // TODO: temporary register for 64-bit constant
ir_emit_load(ctx, type, insn->op2, op2_reg);
}
if (op1_reg < 0 && op2_reg < 0 && !IR_IS_CONST_REF(insn->op2)) {
// TODO: commutative insns
op1_reg = IR_REG_RAX; // TODO: temporary register
ir_emit_load(ctx, type, insn->op1, op1_reg);
}
op = insn->op;
if (op2_reg >= 0) {
| ASM_REF_REG_OP cmp, type, insn->op1, op2_reg
} else if (op1_reg >= 0) {
if (IR_IS_CONST_REF(insn->op2) && ctx->ir_base[insn->op2].val.u64 == 0) {
if (op == IR_ULT) {
/* always false */
if (def_reg >= 0) {
| xor Ra(def_reg), Ra(def_reg)
} else {
| ASM_REF_IMM_OP mov, insn->type, def, 0
}
return;
} else if (op == IR_UGE) {
/* always true */
| ASM_REF_IMM_OP mov, insn->type, def, 1
return;
} else if (op == IR_ULE) {
op = IR_EQ;
} else if (op == IR_UGT) {
op = IR_NE;
}
| ASM_REG_REG_OP test, type, op1_reg, op1_reg
} else {
| ASM_REG_REF_OP cmp, type, op1_reg, insn->op2
}
} else {
IR_ASSERT(IR_IS_CONST_REF(insn->op2));
| ASM_REF_IMM_OP cmp, type, insn->op1, ctx->ir_base[insn->op2].val.i32
}
switch (op) {
case IR_EQ:
| sete Rb(reg)
break;
case IR_NE:
| setne Rb(reg)
break;
case IR_LT:
| setl Rb(reg)
break;
case IR_GE:
| setge Rb(reg)
break;
case IR_LE:
| setle Rb(reg)
break;
case IR_GT:
| setg Rb(reg)
break;
case IR_ULT:
| setb Rb(reg)
break;
case IR_UGE:
| setae Rb(reg)
break;
case IR_ULE:
| setbe Rb(reg)
break;
case IR_UGT:
| seta Rb(reg)
break;
default:
IR_ASSERT(0 && "NIY binary op");
break;
}
if (reg != def_reg) {
ir_emit_store(ctx, insn->type, reg, def);
}
}
void ir_emit_cmp_fp(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_type type = ctx->ir_base[insn->op1].type;
ir_reg op1_reg, op2_reg, def_reg, reg;
ir_ref op1, op2;
ir_op op = insn->op;
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
if (op == IR_LT || op == IR_LE) {
/* swap operands to avoid P flag check */
op ^= 3;
op1 = insn->op2;
op2 = insn->op1;
} else {
op1 = insn->op1;
op2 = insn->op2;
}
def_reg = ir_ref_reg(ctx, def);
op1_reg = ir_ref_reg(ctx, op1);
op2_reg = ir_ref_reg(ctx, op2);
if (def_reg >= 0) {
reg = def_reg;
} else {
reg = IR_REG_RAX; // TODO: temporary register
}
if (op1_reg < 0) {
if (op2_reg >= 0 && (op == IR_EQ || op == IR_NE)) {
ir_ref tmp;
ir_reg tmp_reg;
tmp = op1;
op1 = op2;
op2 = tmp;
tmp_reg = op1_reg;
op1_reg = op2_reg;
op2_reg = tmp_reg;
} else {
op1_reg = IR_REG_XMM7; // TODO: temporary register
ir_emit_fp_load(ctx, type, op1, op1_reg);
}
}
| ASM_FP_REG_REF_OP ucomiss, ucomisd, vucomiss, vucomisd, type, op1_reg, op2
switch (op) {
case IR_EQ:
//| sete Rb(reg)
| setnp al
| mov edx, 0 // TODO: Temporary register
| cmovne eax, edx
break;
case IR_NE:
//| setne Rb(reg)
| setp al
| mov edx, 1 // TODO: Temporary register
| cmovne eax, edx
break;
case IR_LT:
//| setb Rb(reg)
| setnp al
| mov edx, 0 // TODO: Temporary register
| cmovae eax, edx
break;
case IR_GE:
| setae Rb(reg)
break;
case IR_LE:
//| setbe Rb(reg)
| setnp al
| mov edx, 0 // TODO: Temporary register
| cmova eax, edx
break;
case IR_GT:
| seta Rb(reg)
break;
// case IR_ULT: fprintf(stderr, "\tsetb "); break;
// case IR_UGE: fprintf(stderr, "\tsetae "); break;
// case IR_ULE: fprintf(stderr, "\tsetbe "); break;
// case IR_UGT: fprintf(stderr, "\tseta "); break;
default:
IR_ASSERT(0 && "NIY binary op");
break;
}
if (reg != def_reg) {
ir_emit_store(ctx, insn->type, reg, def);
}
}
static void ir_emit_jmp_true(ir_ctx *ctx, int b, ir_ref def)
{
ir_use_list *use_list;
ir_insn *use_insn;
ir_ref i, *p, use, n;
int true_block = 0, false_block = 0, next_block;
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
use_list = &ctx->use_lists[def];
n = use_list->count;
for (i = 0, p = &ctx->use_edges[use_list->refs]; i < n; i++, p++) {
use = *p;
use_insn = &ctx->ir_base[use];
if (use_insn->op == IR_IF_TRUE) {
true_block = ir_skip_empty_blocks(ctx, ctx->bb_num[use]);
} else if (use_insn->op == IR_IF_FALSE) {
false_block = ir_skip_empty_blocks(ctx, ctx->bb_num[use]);
} else {
IR_ASSERT(0);
}
}
IR_ASSERT(true_block && false_block);
next_block = ir_skip_empty_blocks(ctx, b + 1);
if (true_block != next_block) {
| jmp =>true_block
}
}
static void ir_emit_jmp_false(ir_ctx *ctx, int b, ir_ref def)
{
ir_use_list *use_list;
ir_insn *use_insn;
ir_ref i, *p, use, n;
int true_block = 0, false_block = 0, next_block;
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
use_list = &ctx->use_lists[def];
n = use_list->count;
for (i = 0, p = &ctx->use_edges[use_list->refs]; i < n; i++, p++) {
use = *p;
use_insn = &ctx->ir_base[use];
if (use_insn->op == IR_IF_TRUE) {
true_block = ir_skip_empty_blocks(ctx, ctx->bb_num[use]);
} else if (use_insn->op == IR_IF_FALSE) {
false_block = ir_skip_empty_blocks(ctx, ctx->bb_num[use]);
} else {
IR_ASSERT(0);
}
}
IR_ASSERT(true_block && false_block);
next_block = ir_skip_empty_blocks(ctx, b + 1);
if (false_block != next_block) {
| jmp =>false_block
}
}
static void ir_emit_jcc(ir_ctx *ctx, uint8_t op, int b, ir_ref def, ir_insn *insn, bool int_cmp)
{
ir_use_list *use_list;
ir_insn *use_insn;
ir_ref i, *p, use, n;
int true_block = 0, false_block = 0, next_block;
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
use_list = &ctx->use_lists[def];
n = use_list->count;
for (i = 0, p = &ctx->use_edges[use_list->refs]; i < n; i++, p++) {
use = *p;
use_insn = &ctx->ir_base[use];
if (use_insn->op == IR_IF_TRUE) {
true_block = ir_skip_empty_blocks(ctx, ctx->bb_num[use]);
} else if (use_insn->op == IR_IF_FALSE) {
false_block = ir_skip_empty_blocks(ctx, ctx->bb_num[use]);
} else {
IR_ASSERT(0);
}
}
IR_ASSERT(true_block && false_block);
next_block = ir_skip_empty_blocks(ctx, b + 1);
if (true_block == next_block) {
if (int_cmp || (op != IR_GT && op != IR_GE)) {
/* swap to avoid unconditional JMP if this doesn't introduce additional JP instruction */
if (op < IR_LT) {
op ^= 1; // reverse
} else {
op ^= 3; // reverse
}
true_block = false_block;
false_block = 0;
}
} else if (false_block != next_block) {
false_block = 0;
}
if (int_cmp) {
switch (op) {
case IR_EQ:
| je =>true_block
break;
case IR_NE:
| jne =>true_block
break;
case IR_LT:
| jl =>true_block
break;
case IR_GE:
| jge =>true_block
break;
case IR_LE:
| jle =>true_block
break;
case IR_GT:
| jg =>true_block
break;
case IR_ULT:
| jb =>true_block
break;
case IR_UGE:
| jae =>true_block
break;
case IR_ULE:
| jbe =>true_block
break;
case IR_UGT:
| ja =>true_block
break;
default:
IR_ASSERT(0 && "NIY binary op");
break;
}
} else {
switch (op) {
case IR_EQ:
if (!false_block) {
| jp >1
| je =>true_block
|1:
} else {
| jp =>false_block
| je =>true_block
}
break;
case IR_NE:
| jne =>true_block
| jp =>true_block
break;
case IR_LT:
if (!false_block) {
| jp >1
| jb =>true_block
|1:
} else {
| jp =>false_block
| jb =>true_block
}
break;
case IR_GE:
| jae =>true_block
break;
case IR_LE:
if (!false_block) {
| jp >1
| jbe =>true_block
|1:
} else {
| jp =>false_block
| jbe =>true_block
}
break;
case IR_GT:
| ja =>true_block
break;
// case IR_ULT: fprintf(stderr, "\tjb .LL%d\n", true_block); break;
// case IR_UGE: fprintf(stderr, "\tjae .LL%d\n", true_block); break;
// case IR_ULE: fprintf(stderr, "\tjbe .LL%d\n", true_block); break;
// case IR_UGT: fprintf(stderr, "\tja .LL%d\n", true_block); break;
default:
IR_ASSERT(0 && "NIY binary op");
break;
}
}
if (false_block) {
| jmp =>false_block
}
}
void ir_emit_cmp_and_branch_int(ir_ctx *ctx, int b, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_insn *cmp_insn = &ctx->ir_base[insn->op2];
ir_type type = ctx->ir_base[cmp_insn->op1].type;
ir_reg op1_reg = ir_ref_reg(ctx, cmp_insn->op1);
ir_reg op2_reg = ir_ref_reg(ctx, cmp_insn->op2);
ir_op op;
if (IR_IS_CONST_REF(cmp_insn->op2) && ir_type_size[type] == 8 && !IR_IS_32BIT(type, ctx->ir_base[cmp_insn->op2].val)) {
op2_reg = IR_REG_RAX; // TODO: temporary register for 64-bit constant
ir_emit_load(ctx, type, cmp_insn->op2, op2_reg);
}
if (op1_reg < 0 && op2_reg < 0 && !IR_IS_CONST_REF(cmp_insn->op2)) {
// TODO: commutative insns
op1_reg = IR_REG_RAX; // TODO: temporary register
ir_emit_load(ctx, type, cmp_insn->op1, op1_reg);
}
op = cmp_insn->op;
if (op2_reg >= 0) {
| ASM_REF_REG_OP cmp, type, cmp_insn->op1, op2_reg
} else if (op1_reg >= 0) {
if (IR_IS_CONST_REF(cmp_insn->op2) && ctx->ir_base[cmp_insn->op2].val.u64 == 0) {
if (op == IR_ULT) {
/* always false */
ir_emit_jmp_false(ctx, b, def);
return;
} else if (op == IR_UGE) {
/* always true */
ir_emit_jmp_true(ctx, b, def);
return;
} else if (op == IR_ULE) {
op = IR_EQ;
} else if (op == IR_UGT) {
op = IR_NE;
}
| ASM_REG_REG_OP test, type, op1_reg, op1_reg
} else {
| ASM_REG_REF_OP cmp, type, op1_reg, cmp_insn->op2
}
} else {
IR_ASSERT(IR_IS_CONST_REF(cmp_insn->op2));
| ASM_REF_IMM_OP cmp, type, cmp_insn->op1, ctx->ir_base[cmp_insn->op2].val.i32
}
ir_emit_jcc(ctx, op, b, def, insn, 1);
}
void ir_emit_cmp_and_branch_fp(ir_ctx *ctx, int b, ir_ref def, ir_insn *insn)
{
ir_insn *cmp_insn = &ctx->ir_base[insn->op2];
ir_type type = ctx->ir_base[cmp_insn->op1].type;
ir_op op = cmp_insn->op;
ir_ref op1, op2;
ir_reg op1_reg, op2_reg;
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
if (op == IR_LT || op == IR_LE) {
/* swap operands to avoid P flag check */
op ^= 3;
op1 = cmp_insn->op2;
op2 = cmp_insn->op1;
} else {
op1 = cmp_insn->op1;
op2 = cmp_insn->op2;
}
op1_reg = ir_ref_reg(ctx, op1);
op2_reg = ir_ref_reg(ctx, op2);
if (op1_reg < 0) {
if (op2_reg >= 0 && (op == IR_EQ || op == IR_NE)) {
ir_ref tmp;
ir_reg tmp_reg;
tmp = op1;
op1 = op2;
op2 = tmp;
tmp_reg = op1_reg;
op1_reg = op2_reg;
op2_reg = tmp_reg;
} else {
op1_reg = IR_REG_XMM7; // TODO: temporary register
ir_emit_fp_load(ctx, type, op1, op1_reg);
}
}
| ASM_FP_REG_REF_OP ucomiss, ucomisd, vucomiss, vucomisd, type, op1_reg, op2
ir_emit_jcc(ctx, op, b, def, insn, 0);
}
void ir_emit_if_int(ir_ctx *ctx, int b, ir_ref def, ir_insn *insn)
{
ir_type type = ctx->ir_base[insn->op2].type;
ir_reg op2_reg = ir_ref_reg(ctx, insn->op2);
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
if (op2_reg >= 0) {
| ASM_REG_REG_OP test, type, op2_reg, op2_reg
} else {
| ASM_REF_IMM_OP cmp, type, insn->op2, 0
}
ir_emit_jcc(ctx, IR_NE, b, def, insn, 1);
}
void ir_emit_return_void(ir_ctx *ctx)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_emit_epilogue(ctx);
| ret
}
void ir_emit_return_int(ir_ctx *ctx, ir_insn *insn)
{
ir_reg op2_reg = ir_ref_reg(ctx, insn->op2);
if (op2_reg != IR_REG_INT_RET1) {
ir_emit_load(ctx, ctx->ir_base[insn->op2].type, insn->op2, IR_REG_INT_RET1);
}
ir_emit_return_void(ctx);
}
void ir_emit_return_fp(ir_ctx *ctx, ir_insn *insn)
{
ir_reg op2_reg = ir_ref_reg(ctx, insn->op2);
if (op2_reg != IR_REG_FP_RET1) {
ir_emit_fp_load(ctx, ctx->ir_base[insn->op2].type, insn->op2, IR_REG_FP_RET1);
}
ir_emit_return_void(ctx);
}
static void ir_emit_copy_int(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_ref type = insn->type;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_reg reg;
if (def_reg >= 0 && def_reg == op1_reg) {
/* same reg */
} else if (def_reg >= 0) {
ir_emit_load(ctx, type, insn->op1, def_reg);
} else if (op1_reg >= 0) {
ir_emit_store(ctx, type, op1_reg, def);
} else if (IR_IS_CONST_REF(insn->op1) && IR_IS_SIGNED_32BIT(ctx->ir_base[insn->op1].val.i64)) {
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
| ASM_REF_IMM_OP mov, type, def, ctx->ir_base[insn->op1].val.i32
} else {
reg = IR_REG_RAX; // TODO: temporary register
ir_emit_load(ctx, type, insn->op1, reg);
ir_emit_store(ctx, type, reg, def);
}
}
static void ir_emit_copy_fp(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_type type = insn->type;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_reg reg;
if (def_reg > 0 && def_reg == op1_reg) {
/* same reg */
} else if (def_reg >= 0) {
ir_emit_fp_load(ctx, type, insn->op1, def_reg);
} else if (op1_reg >= 0) {
ir_emit_fp_store(ctx, type, op1_reg, def);
} else {
reg = IR_REG_XMM7; // TODO: temporary register
ir_emit_fp_load(ctx, type, insn->op1, reg);
ir_emit_fp_store(ctx, type, reg, def);
}
}
static void ir_emit_vaddr(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_ref type = insn->type;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg reg;
int32_t offset;
if (def_reg >= 0) {
reg = def_reg;
} else {
reg = IR_REG_RAX; // TODO: temporary register
}
IR_ASSERT(ctx->vregs[insn->op1]);
offset = ir_vreg_spill_slot(ctx, ctx->vregs[insn->op1]);
if (ctx->flags & IR_USE_FRAME_POINTER) {
| lea Ra(reg), aword [rbp+offset]
} else {
| lea Ra(reg), aword [rsp+offset]
}
if (def_reg != reg) {
ir_emit_store(ctx, type, reg, def);
}
}
static void ir_emit_vload_int(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_ref type = insn->type;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg reg;
int32_t offset;
if (def_reg >= 0) {
reg = def_reg;
} else {
reg = IR_REG_RAX; // TODO: temporary register
}
IR_ASSERT(ctx->vregs[insn->op2]);
offset = ir_vreg_spill_slot(ctx, ctx->vregs[insn->op2]);
if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_REG_MEM_OP mov, type, reg, [rbp+offset]
} else {
| ASM_REG_MEM_OP mov, type, reg, [rsp+offset]
}
if (def_reg != reg) {
ir_emit_store(ctx, type, reg, def);
}
}
static void ir_emit_vload_fp(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_ref type = insn->type;
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg reg;
if (def_reg >= 0) {
reg = def_reg;
} else {
reg = IR_REG_XMM7; // TODO: temporary register
}
IR_ASSERT(ctx->vregs[insn->op2]);
| ASM_FP_REG_VREG_MOV type, reg, ctx->vregs[insn->op2]
if (def_reg != reg) {
ir_emit_fp_store(ctx, type, reg, def);
}
}
static void ir_emit_vstore_int(ir_ctx *ctx, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_insn *val_insn = &ctx->ir_base[insn->op3];
ir_ref type = val_insn->type;
ir_reg op3_reg = ir_ref_reg(ctx, insn->op3);
ir_reg reg;
int32_t offset;
IR_ASSERT(ctx->vregs[insn->op2]);
offset = ir_vreg_spill_slot(ctx, ctx->vregs[insn->op2]);
if (IR_IS_CONST_REF(insn->op3) && IR_IS_32BIT(type, val_insn->val)) {
if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_MEM_IMM_OP mov, type, [rbp+offset], val_insn->val.i32
} else {
| ASM_MEM_IMM_OP mov, type, [rsp+offset], val_insn->val.i32
}
} else {
if (op3_reg >= 0) {
reg = op3_reg;
} else {
reg = IR_REG_RAX; // TODO: temporary register
ir_emit_load(ctx, type, insn->op3, reg);
}
if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_MEM_REG_OP mov, type, [rbp+offset], reg
} else {
| ASM_MEM_REG_OP mov, type, [rsp+offset], reg
}
}
}
static void ir_emit_vstore_fp(ir_ctx *ctx, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_ref type = ctx->ir_base[insn->op3].type;
ir_reg op3_reg = ir_ref_reg(ctx, insn->op3);
ir_reg reg;
IR_ASSERT(ctx->vregs[insn->op2]);
if (op3_reg >= 0) {
reg = op3_reg;
} else {
reg = IR_REG_XMM7; // TODO: temporary register
ir_emit_fp_load(ctx, type, insn->op3, reg);
}
| ASM_FP_VREG_REG_MOV type, ctx->vregs[insn->op2], reg
}
static void ir_emit_load_int(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_ref type = insn->type;
ir_reg op2_reg = ir_ref_reg(ctx, insn->op2);
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg reg;
if (def_reg >= 0) {
reg = def_reg;
} else {
reg = IR_REG_RAX; // TODO: temporary register
}
if (op2_reg < 0) {
op2_reg = IR_REG_RAX; // TODO: temporary register
ir_emit_load(ctx, type, insn->op2, op2_reg);
}
| ASM_REG_MEM_OP mov, type, reg, [Ra(op2_reg)]
if (def_reg != reg) {
ir_emit_store(ctx, type, reg, def);
}
}
static void ir_emit_load_fp(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_ref type = insn->type;
ir_reg op2_reg = ir_ref_reg(ctx, insn->op2);
ir_reg def_reg = ir_ref_reg(ctx, def);
ir_reg reg;
if (def_reg >= 0) {
reg = def_reg;
} else {
reg = IR_REG_XMM7; // TODO: temporary register
}
if (op2_reg < 0) {
op2_reg = IR_REG_RAX; // TODO: temporary register
ir_emit_load(ctx, type, insn->op2, op2_reg);
}
| ASM_FP_REG_MEM_OP movss, movsd, vmovss, vmovsd, type, reg, [Ra(op2_reg)]
if (def_reg != reg) {
ir_emit_fp_store(ctx, type, reg, def);
}
}
static void ir_emit_store_int(ir_ctx *ctx, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_insn *val_insn = &ctx->ir_base[insn->op3];
ir_ref type = val_insn->type;
ir_reg op2_reg = ir_ref_reg(ctx, insn->op2);
ir_reg op3_reg = ir_ref_reg(ctx, insn->op3);
ir_reg reg;
if (op2_reg < 0) {
op2_reg = IR_REG_RAX; // TODO: temporary register
ir_emit_load(ctx, type, insn->op2, op2_reg);
}
if (IR_IS_CONST_REF(insn->op3) && IR_IS_32BIT(type, val_insn->val)) {
| ASM_MEM_IMM_OP mov, type, [Ra(op2_reg)], val_insn->val.i32
} else {
if (op3_reg >= 0) {
reg = op3_reg;
} else {
reg = IR_REG_RAX; // TODO: temporary register
ir_emit_load(ctx, type, insn->op3, reg);
}
| ASM_MEM_REG_OP mov, type, [Ra(op2_reg)], reg
}
}
static void ir_emit_store_fp(ir_ctx *ctx, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_ref type = ctx->ir_base[insn->op3].type;
ir_reg op2_reg = ir_ref_reg(ctx, insn->op2);
ir_reg op3_reg = ir_ref_reg(ctx, insn->op3);
ir_reg reg;
if (op3_reg >= 0) {
reg = op3_reg;
} else {
reg = IR_REG_XMM7; // TODO: temporary register
ir_emit_fp_load(ctx, type, insn->op3, reg);
}
if (op2_reg < 0) {
op2_reg = IR_REG_RAX; // TODO: temporary register
ir_emit_load(ctx, type, insn->op2, op2_reg);
}
IR_ASSERT(ctx->vregs[insn->op2]);
| ASM_FP_MEM_REG_OP movss, movsd, vmovss, vmovsd, type, [Ra(op2_reg)], reg
}
static void ir_emit_alloca(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
// TODO: alignment
| ASM_REG_REF_OP sub, IR_ADDR, IR_REG_RSP, insn->op2
ir_emit_store(ctx, IR_ADDR, IR_REG_RSP, def);
// TODO: stack frame alignment
}
static void ir_emit_switch(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_type type;
ir_use_list *use_list;
ir_insn *use_insn, *val;
ir_ref i, *p, use, n;
int label, default_label = 0;
int count;
ir_val min, max;
int64_t offset;
type = ctx->ir_base[insn->op2].type;
if (IR_IS_TYPE_SIGNED(type)) {
min.u64 = 0x7fffffffffffffff;
max.u64 = 0x8000000000000000;
} else {
min.u64 = 0xffffffffffffffff;
max.u64 = 0x0;
}
use_list = &ctx->use_lists[def];
n = use_list->count;
for (i = 0, p = &ctx->use_edges[use_list->refs]; i < n; i++, p++) {
use = *p;
use_insn = &ctx->ir_base[use];
if (use_insn->op == IR_CASE_VAL) {
val = &ctx->ir_base[use_insn->op2];
if (IR_IS_TYPE_SIGNED(type)) {
IR_ASSERT(IR_IS_TYPE_SIGNED(val->type));
min.i64 = IR_MIN(min.i64, val->val.i64);
max.i64 = IR_MAX(max.i64, val->val.i64);
} else {
IR_ASSERT(!IR_IS_TYPE_SIGNED(val->type));
min.u64 = (int64_t)IR_MIN(min.u64, val->val.u64);
max.u64 = (int64_t)IR_MAX(max.u64, val->val.u64);
}
count++;
} else if (use_insn->op == IR_CASE_DEFAULT) {
default_label = ir_skip_empty_blocks(ctx, ctx->bb_num[use]);
} else {
IR_ASSERT(0);
}
}
/* Generate a table jmp or a seqence of calls */
if ((max.i64-min.i64) < count * 8) {
int *labels = ir_mem_malloc(sizeof(int) * (max.i64 - min.i64 + 1));
ir_reg op2_reg = ir_ref_reg(ctx, insn->op2);
ir_reg reg;
if (op2_reg > 0) {
reg = op2_reg;
} else {
reg = IR_REG_RAX; // TODO: remporary register
ir_emit_load(ctx, type, insn->op2, reg);
}
for (i = 0; i <= (max.i64 - min.i64 + 1); i++) {
labels[i] = default_label;
}
for (i = 0, p = &ctx->use_edges[use_list->refs]; i < n; i++, p++) {
use = *p;
use_insn = &ctx->ir_base[use];
if (use_insn->op == IR_CASE_VAL) {
val = &ctx->ir_base[use_insn->op2];
label = ir_skip_empty_blocks(ctx, ctx->bb_num[use]);
labels[val->val.i64 - min.i64] = label;
}
}
if (IR_IS_32BIT(type, max)) {
| ASM_REG_IMM_OP cmp, type, reg, max.i32
} else {
| mov64 r2, max.i64 // TODO: temporary register 2
| ASM_REG_REG_OP cmp, type, reg, IR_REG_R2
}
if (IR_IS_TYPE_SIGNED(type)) {
| jg =>default_label
} else {
| ja =>default_label
}
if (IR_IS_32BIT(type, min)) {
offset = -min.i64 * 8;
if (IR_IS_SIGNED_32BIT(offset)) {
| ASM_REG_IMM_OP cmp, type, reg, min.i32
} else {
| ASM_REG_REG_OP sub, type, reg, (int32_t)offset // TODO: reg clobbering
offset = 0;
}
} else {
| mov64 r2, min.i64 // TODO: temporary register 2
| ASM_REG_REG_OP sub, type, reg, IR_REG_R2 // TODO: reg clobbering
offset = 0;
}
if (IR_IS_TYPE_SIGNED(type)) {
| jl =>default_label
} else {
| jb =>default_label
}
if (sizeof(void*) == 8) {
|.if X64
switch (ir_type_size[type]) {
case 1:
if (IR_IS_TYPE_SIGNED(type)) {
| movsx Ra(reg), Rb(reg)
} else {
| movzx Ra(reg), Rb(reg)
}
break;
case 2:
if (IR_IS_TYPE_SIGNED(type)) {
| movsx Ra(reg), Rw(reg)
} else {
| movzx Ra(reg), Rw(reg)
}
break;
case 4:
if (IR_IS_TYPE_SIGNED(type)) {
| movsxd Ra(reg), Rd(reg)
} else {
| mov Rd(reg), Rd(reg)
}
break;
case 8:
break;
default:
IR_ASSERT(0);
}
| lea r2, aword [>1] // TODO: r0 temporary register 2
| jmp aword [r2 + Ra(reg)*8 + (int32_t)offset]
|.endif
} else {
|.if not X64
switch (ir_type_size[type]) {
case 1:
if (IR_IS_TYPE_SIGNED(type)) {
| movsx Ra(reg), Rb(reg)
} else {
| movzx Ra(reg), Rb(reg)
}
break;
case 2:
if (IR_IS_TYPE_SIGNED(type)) {
| movsx Ra(reg), Rw(reg)
} else {
| movzx Ra(reg), Rw(reg)
}
break;
case 4:
break;
default:
IR_ASSERT(0 && "Unsupported type size");
}
| jmp aword [(int32_t)offset + Ra(reg) * 4 + >1]
|.endif
}
|.jmp_table
if (!data->jmp_table_label) {
data->jmp_table_label = ctx->cfg_blocks_count + ctx->consts_count + 3;
|=>data->jmp_table_label:
}
|.align aword
|1:
for (i = 0; i <= (max.i64 - min.i64 + 1); i++) {
| .aword =>labels[i]
}
|.code
ir_mem_free(labels);
} else {
for (i = 0, p = &ctx->use_edges[use_list->refs]; i < n; i++, p++) {
use = *p;
use_insn = &ctx->ir_base[use];
if (use_insn->op == IR_CASE_VAL) {
val = &ctx->ir_base[use_insn->op2];
label = ir_skip_empty_blocks(ctx, ctx->bb_num[use]);
if (IR_IS_32BIT(type, val->val)) {
| ASM_REF_IMM_OP cmp, type, insn->op2, val->val.i32
} else {
ir_reg reg = IR_REG_RAX; // TODO: Temporary register
| mov64 Ra(reg), val->val.i64
| ASM_REF_REG_OP cmp, type, insn->op2, reg
}
| je =>label
}
}
if (default_label) {
| jmp =>default_label
}
}
}
#define IS_32BIT(addr) (((uintptr_t)(addr)) <= 0x7fffffff)
#define IS_SIGNED_32BIT(val) ((((intptr_t)(val)) <= 0x7fffffff) && (((intptr_t)(val)) >= (-2147483647 - 1)))
#include <dlfcn.h>
static void *ir_resolve_sym_name(const char *name)
{
void *handle = NULL;
void *addr;
#ifdef RTLD_DEFAULT
handle = RTLD_DEFAULT;
#endif
addr = dlsym(handle, name);
IR_ASSERT(addr != NULL);
return addr;
}
typedef struct _ir_copy {
ir_ref from;
ir_reg to;
} ir_copy;
int ir_parallel_copy(ir_ctx *ctx, ir_copy *copies, int count)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
int i;
ir_ref from;
ir_reg to, from_reg;
ir_type type;
ir_ref *loc, *pred;
ir_regset todo, ready;
loc = ir_mem_calloc(IR_REG_NUM * 2, sizeof(ir_ref));
pred = loc + IR_REG_NUM;
memset(loc, IR_REG_NONE, IR_REG_NUM * sizeof(ir_ref));
todo = IR_REGSET_EMPTY;
ready = IR_REGSET_EMPTY;
for (i = 0; i < count; i++) {
from = copies[i].from;
from_reg = ir_ref_reg(ctx, from);
to = copies[i].to;
if (from_reg == IR_REG_NONE) {
pred[to] = from;
IR_REGSET_INCL(todo, to);
} else if (from_reg != to) {
loc[from_reg] = from_reg;
pred[to] = from;
IR_REGSET_INCL(todo, to);
}
}
IR_REGSET_FOREACH(todo, i) {
if (loc[i] == IR_REG_NONE) {
IR_REGSET_INCL(ready, i);
}
} IR_REGSET_FOREACH_END();
while (todo != IR_REGSET_EMPTY) {
ir_ref /*a, b,*/ c;
while (ready != IR_REGSET_EMPTY) {
to = IR_REGSET_FIRST(ready);
IR_REGSET_EXCL(ready, to);
from = pred[to];
type = ctx->ir_base[from].type;
from_reg = ir_ref_reg(ctx, from);
if (from_reg == IR_REG_NONE) {
if (IR_IS_TYPE_INT(type)) {
ir_emit_load(ctx, type, from, to);
} else {
ir_emit_fp_load(ctx, type, from, to);
}
} else {
c = loc[from_reg];
if (IR_IS_TYPE_INT(type)) {
| ASM_REG_REG_OP mov, type, to, c
} else {
| ASM_FP_REG_REG_OP movaps, movapd, vmovaps, vmovapd, type, to, c
}
loc[from_reg] = to;
if (from_reg == c && pred[from_reg]) {
IR_REGSET_INCL(ready, from_reg);
}
}
}
to = IR_REGSET_FIRST(todo);
IR_REGSET_EXCL(todo, to);
from = pred[to];
from_reg = ir_ref_reg(ctx, from);
if (from_reg != IR_REG_NONE && to != loc[from_reg]) {
type = ctx->ir_base[from].type;
if (IR_IS_TYPE_INT(type)) {
| ASM_REG_REG_OP mov, type, IR_REG_R0, to // TODO: Temporary register
} else {
| ASM_FP_REG_REG_OP movaps, movapd, vmovaps, vmovapd, type, IR_REG_XMM7, to // TODO: Temporary register
}
loc[to] = 0;
IR_REGSET_INCL(ready, to);
}
}
ir_mem_free(loc);
return 1;
}
static void ir_emit_arguments(ir_ctx *ctx, ir_insn *insn)
{
int j, n;
ir_ref arg;
ir_insn *arg_insn;
uint8_t type;
ir_reg src, dst;
int int_param = 0;
int fp_param = 0;
int count = 0;
int int_reg_params_count = IR_REG_INT_ARGS;
int fp_reg_params_count = IR_REG_FP_ARGS;
const int8_t *int_reg_params = _ir_int_reg_params;
const int8_t *fp_reg_params = _ir_fp_reg_params;
ir_copy *copies;
n = ir_input_edges_count(ctx, insn);
copies = ir_mem_malloc((n - 2) * sizeof(ir_copy));
for (j = 3; j <= n; j++) {
arg = insn->ops[j];
src = ir_ref_reg(ctx, arg);
arg_insn = &ctx->ir_base[arg];
type = arg_insn->type;
if (IR_IS_TYPE_INT(type)) {
if (int_param < int_reg_params_count) {
dst = int_reg_params[int_param];
if (src != dst) {
copies[count].from = arg;
copies[count].to = dst;
count++;
}
} else {
// TODO: pass arg throgh stack
}
int_param++;
} else if (IR_IS_TYPE_FP(type)) {
if (fp_param < fp_reg_params_count) {
dst = fp_reg_params[fp_param];
if (src != dst) {
copies[count].from = arg;
copies[count].to = dst;
count++;
}
} else {
// TODO: pass arg throgh stack
}
fp_param++;
} else {
IR_ASSERT(0);
}
}
ir_parallel_copy(ctx, copies, count);
ir_mem_free(copies);
}
static void ir_emit_call(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
const char *name;
void *addr;
ir_reg dst;
name = ir_get_str(ctx, ctx->ir_base[insn->op2].val.addr);
addr = ir_resolve_sym_name(name);
ir_emit_arguments(ctx, insn);
// if (IS_SIGNED_32BIT(addr)) { // TODO: 32-bit IP relative or 64-bit absolute address
// | call qword &addr
// } else {
| mov64 rax, ((ptrdiff_t)addr) // 0x48 0xb8 <imm-64-bit>
| call rax
// }
if (insn->type != IR_VOID) {
if (IR_IS_TYPE_INT(insn->type)) {
dst = ir_ref_reg(ctx, def);
if (dst != IR_REG_INT_RET1) {
ir_emit_store(ctx, insn->type, IR_REG_INT_RET1, def);
}
} else if (IR_IS_TYPE_FP(insn->type)) {
dst = ir_ref_reg(ctx, def);
if (dst != IR_REG_FP_RET1) {
ir_emit_fp_store(ctx, insn->type, IR_REG_FP_RET1, def);
}
} else {
IR_ASSERT(0);
}
}
}
static void ir_emit_tailcall(ir_ctx *ctx, ir_ref def, ir_insn *insn)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
const char *name;
void *addr;
name = ir_get_str(ctx, ctx->ir_base[insn->op2].val.addr);
addr = ir_resolve_sym_name(name);
ir_emit_arguments(ctx, insn);
ir_emit_epilogue(ctx);
// if (IS_SIGNED_32BIT(addr)) { // TODO: 32-bit IP relative or 64-bit absolute address
// | call qword &addr
// } else {
| mov64 rax, ((ptrdiff_t)addr) // 0x48 0xb8 <imm-64-bit>
| jmp rax
// }
}
static int ir_emit_dessa_move(ir_ctx *ctx, uint8_t type, int from, int to)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_insn *from_insn;
int8_t to_reg, from_reg;
from_insn =&ctx->ir_base[from];
if (IR_IS_TYPE_INT(type)) {
to_reg = to ? ir_vreg_reg(ctx, to) : IR_REG_RAX; // %rax is a temporary register
from_reg = from ? ir_vreg_reg(ctx, from) : IR_REG_RAX; // %rax is a temporary register
if (from_reg >= 0 && to_reg >= 0) {
| ASM_REG_REG_OP mov, type, to_reg, from_reg
return 1;
} else if (IR_IS_CONST_REF(from)) {
if (to_reg >= 0) {
ir_emit_load(ctx, type, from, to_reg);
return 1;
} else {
ir_insn *_insn = &ctx->ir_base[from];
int32_t offset = ir_vreg_spill_slot(ctx, to);
if (ir_type_size[type] == 8 && !IR_IS_SIGNED_32BIT(_insn->val.i64)) {
from_reg = IR_REG_RDX; // TODO temporary register 2
ir_emit_load(ctx, type, from, from_reg);
} else {
if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_MEM_IMM_OP mov, type, [rbp+offset], _insn->val.i32
} else {
| ASM_MEM_IMM_OP mov, type, [rsp+offset], _insn->val.i32
}
return 1;
}
}
}
if (from_reg < 0) {
int32_t offset = ir_vreg_spill_slot(ctx, from);
from_reg = to_reg >= 0 ? to_reg : IR_REG_RDX; // TODO temporary register 2
if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_REG_MEM_OP mov, type, from_reg, [rbp+offset]
} else {
| ASM_REG_MEM_OP mov, type, from_reg, [rsp+offset]
}
}
if (from_reg != to_reg) {
int32_t offset = ir_vreg_spill_slot(ctx, to);
if (ctx->flags & IR_USE_FRAME_POINTER) {
| ASM_MEM_REG_OP mov, type, [rbp+offset], from_reg
} else {
| ASM_MEM_REG_OP mov, type, [rsp+offset], from_reg
}
}
} else {
to_reg = to ? ir_vreg_reg(ctx, to) : IR_REG_XMM0; // %xmm0 is a temporary register
from_reg = from ? ir_vreg_reg(ctx, from) : IR_REG_XMM0; // %xmm0 is a temporary register
if (from_reg < 0) {
from_reg = (to_reg >= 0) ? to_reg : IR_REG_XMM0; // TODO: temporary register 2
if (IR_IS_CONST_REF(from)) {
ir_emit_fp_load(ctx, from_insn->type, from, from_reg);
} else {
| ASM_FP_REG_VREG_MOV type, from_reg, from
}
}
if (from_reg != to_reg) {
| ASM_FP_VREG_REG_MOV type, to, from_reg
}
}
return 1;
}
static void ir_emit_param_move(ir_ctx *ctx, uint8_t type, int from_reg, int to, ir_ref name)
{
ir_backend_data *data = ctx->data;
dasm_State **Dst = &data->dasm_state;
ir_reg to_reg = ir_vreg_reg(ctx, to);
ir_reg fp = (ctx->flags & IR_USE_FRAME_POINTER) ? IR_REG_RBP : IR_REG_RSP;
int32_t offset;
if (IR_IS_TYPE_INT(type)) {
if (from_reg >= 0) {
if (to_reg >= 0) {
| ASM_REG_REG_OP mov, type, to_reg, from_reg
} else {
offset = ir_vreg_spill_slot(ctx, to);
| ASM_MEM_REG_OP mov, type, [Ra(fp)+offset], from_reg
}
} else {
offset = (ctx->flags & IR_USE_FRAME_POINTER) ? -8 : -8; // TODO:
if (to_reg >= 0) {
| ASM_REG_MEM_OP mov, type, to_reg, [Ra(fp)+offset]
} else {
| ASM_REG_MEM_OP mov, type, IR_REG_R0, [Ra(fp)+offset] // TODO: tmp
offset = ir_vreg_spill_slot(ctx, to);
| ASM_MEM_REG_OP mov, type, [Ra(fp)+offset], IR_REG_R0 // TODO: tmp
}
}
} else {
if (from_reg >= 0) {
if (to_reg >= 0) {
| ASM_FP_REG_REG_OP movaps, movapd, vmovaps, vmovapd, type, from_reg, to_reg
} else {
offset = ir_vreg_spill_slot(ctx, to);
| ASM_FP_MEM_REG_OP movss, movsd, vmovss, vmovsd, type, [Ra(fp)+offset], from_reg
}
} else {
offset = (ctx->flags & IR_USE_FRAME_POINTER) ? -8 : -8; // TODO:
if (to_reg >= 0) {
| ASM_FP_REG_MEM_OP movss, movsd, vmovss, vmovsd, type, to_reg, [Ra(fp)+offset]
} else {
| ASM_FP_REG_MEM_OP movss, movsd, vmovss, vmovsd, type, IR_REG_R0, [Ra(fp)+offset] // TODO: tmp
offset = ir_vreg_spill_slot(ctx, to);
| ASM_FP_MEM_REG_OP movss, movsd, vmovss, vmovsd, type, [Ra(fp)+offset], IR_REG_R0 // TODO: tmp
}
}
}
}
static void ir_emit_load_params(ir_ctx *ctx)
{
ir_use_list *use_list = &ctx->use_lists[1];
ir_insn *insn;
ir_ref i, n, *p, use;
int int_param_num = 0;
int fp_param_num = 0;
int src_reg; /* negative values represent arguments on CPU stack */
int dst_reg;
// TODO: Calling convention specific
int int_reg_params_count = IR_REG_INT_ARGS;
int fp_reg_params_count = IR_REG_FP_ARGS;
const int8_t *int_reg_params = _ir_int_reg_params;
const int8_t *fp_reg_params = _ir_fp_reg_params;
n = use_list->count;
for (i = 0, p = &ctx->use_edges[use_list->refs]; i < n; i++, p++) {
use = *p;
insn = &ctx->ir_base[use];
if (insn->op == IR_PARAM) {
if (ctx->vregs[use]) {
if (IR_IS_TYPE_INT(insn->type)) {
if (int_param_num < int_reg_params_count) {
src_reg = int_reg_params[int_param_num];
} else {
// TODO: replace IR_REG_NONE by stack slot
src_reg = IR_REG_NONE;
}
int_param_num++;
} else {
if (fp_param_num < fp_reg_params_count) {
src_reg = fp_reg_params[fp_param_num];
} else {
// TODO: replace IR_REG_NONE by stack slot
src_reg = IR_REG_NONE;
}
fp_param_num++;
}
dst_reg = ir_ref_reg(ctx, use);
if (src_reg != dst_reg) {
// TODO: DO parallel move
ir_emit_param_move(ctx, insn->type, src_reg, ctx->vregs[use], insn->op2);
}
} else {
if (IR_IS_TYPE_INT(insn->type)) {
int_param_num++;
} else {
fp_param_num++;
}
}
}
}
}
static void ir_allocate_unique_spill_slots(ir_ctx *ctx)
{
int b;
ir_block *bb;
ir_insn *insn;
ir_ref i, n;
uint32_t flags, *rule;
ir_backend_data *data = ctx->data;
ctx->live_intervals = ir_mem_calloc(ctx->vregs_count + 1, sizeof(ir_live_interval*));
for (b = 1, bb = ctx->cfg_blocks + b; b <= ctx->cfg_blocks_count; b++, bb++) {
bb->flags &= ~IR_BB_MAY_SKIP;
flags = IR_BB_MAY_SKIP;
if (bb->successors_count != 1 ||
ctx->cfg_edges[bb->successors] != b + 1 ||
(bb->flags & IR_BB_DESSA_MOVES)) {
flags = 0;
}
for (i = bb->start, insn = ctx->ir_base + i, rule = ctx->rules + i; i <= bb->end;) {
switch (ctx->rules ? *rule : insn->op) {
case IR_START:
case IR_BEGIN:
case IR_END:
case IR_IF_TRUE:
case IR_IF_FALSE:
case IR_CASE_VAL:
case IR_CASE_DEFAULT:
case IR_MERGE:
case IR_LOOP_BEGIN:
case IR_LOOP_END:
case IR_LOOP_EXIT:
case IR_SKIP:
break;
default:
flags = 0;
case IR_PARAM:
case IR_VAR:
case IR_PHI:
case IR_PI:
case IR_SKIP_REG:
/* skip */
if (ctx->vregs[i]) {
if (!ctx->live_intervals[ctx->vregs[i]]) {
ir_live_interval *ival = ir_mem_malloc(sizeof(ir_live_interval));
ctx->live_intervals[ctx->vregs[i]] = ival;
ival->type = insn->type;
ival->reg = IR_REG_NONE;
ival->range.start = 0;
ival->range.end = 0;
ival->range.next = NULL;
// if (insn->op == IR_PARAM) {
// fprintf(f, "\t%s d_%d = %s;\n", ir_type_cname[insn->type], ctx->vregs[i], ir_get_str(ctx, insn->op2));
// } else {
data->stack_frame_size += 8; // ir_type_size[insn->type]; // TODO: alignment
ival->stack_spill_pos = data->stack_frame_size;
// fprintf(f, "\t%s d_%d;\n", ir_type_cname[insn->type], ctx->vregs[i]);
// }
} else if (insn->op == IR_PARAM) {
IR_ASSERT(0 && "unexpected PARAM");
return;
}
}
break;
}
n = ir_operands_count(ctx, insn);
n = 1 + (n >> 2); // support for multi-word instructions like MERGE and PHI
i += n;
insn += n;
rule += n;
}
bb->flags |= flags;
}
if (ctx->flags & IR_HAS_CALLS) {
/* Stack must be 16 byte aligned */
if (ctx->flags & IR_USE_FRAME_POINTER) {
while (IR_ALIGNED_SIZE(data->stack_frame_size + sizeof(void*) * 2, 16) != data->stack_frame_size + sizeof(void*) * 2) {
data->stack_frame_size += 8;
data->stack_frame_alignment += 8;
}
} else {
while (IR_ALIGNED_SIZE(data->stack_frame_size + sizeof(void*), 16) != data->stack_frame_size + sizeof(void*)) {
data->stack_frame_size += 8;
data->stack_frame_alignment += 8;
}
}
}
}
static void ir_mark_empty_blocks(ir_ctx *ctx)
{
int b;
ir_block *bb;
ir_insn *insn;
ir_ref i, n;
uint32_t flags, *rule;
for (b = 1, bb = ctx->cfg_blocks + b; b <= ctx->cfg_blocks_count; b++, bb++) {
bb->flags &= ~IR_BB_MAY_SKIP;
if (bb->successors_count == 1
&& ctx->cfg_edges[bb->successors] == b + 1
&& !(bb->flags & IR_BB_DESSA_MOVES)) {
flags = IR_BB_MAY_SKIP;
for (i = bb->start, insn = ctx->ir_base + i, rule = ctx->rules + i; i < bb->end;) {
if (*rule != IR_SKIP && *rule != IR_SKIP_REG) {
flags = 0;
break;
}
n = ir_operands_count(ctx, insn);
n = 1 + (n >> 2); // support for multi-word instructions like MERGE and PHI
i += n;
insn += n;
rule += n;
}
bb->flags |= flags;
}
}
}
static void ir_calc_stack_frame_size(ir_ctx *ctx, ir_backend_data *data)
{
int i;
ir_live_interval **p, *ival;
uint32_t additional_size = 0;
for (i = 1, p = ctx->live_intervals + i; i <= ctx->vregs_count; i++, p++) {
ival = *p;
if (ival) {
if (ival->stack_spill_pos) {
if (ival->stack_spill_pos > data->stack_frame_size) {
data->stack_frame_size = ival->stack_spill_pos;
}
}
if (ival->reg >= 0) {
if (!IR_REGSET_IN(data->used_preserved_regs, ival->reg)
&& IR_REGSET_IN(IR_REGSET_PRESERVED, ival->reg)) {
IR_REGSET_INCL(data->used_preserved_regs, ival->reg);
additional_size += 8;
}
}
}
}
data->stack_frame_size += additional_size;
if (ctx->flags & IR_HAS_CALLS) {
/* Stack must be 16 byte aligned */
if (ctx->flags & IR_USE_FRAME_POINTER) {
while (IR_ALIGNED_SIZE(data->stack_frame_size + sizeof(void*) * 2, 16) != data->stack_frame_size + sizeof(void*) * 2) {
data->stack_frame_size += 8;
data->stack_frame_alignment += 8;
}
} else {
while (IR_ALIGNED_SIZE(data->stack_frame_size + sizeof(void*), 16) != data->stack_frame_size + sizeof(void*)) {
data->stack_frame_size += 8;
data->stack_frame_alignment += 8;
}
}
}
}
static void* dasm_labels[ir_lb_MAX];
void *ir_emit(ir_ctx *ctx, size_t *size)
{
int b, n, target;
ir_block *bb;
ir_ref i;
ir_insn *insn;
uint32_t *rule;
ir_backend_data data;
dasm_State **Dst;
int ret;
void *entry;
ctx->data = &data;
data.stack_frame_size = 0;
data.stack_frame_alignment = 0;
data.used_preserved_regs = 0;
data.rodata_label = 0;
data.jmp_table_label = 0;
data.double_neg_const = 0;
data.float_neg_const = 0;
data.double_abs_const = 0;
data.float_abs_const = 0;
if (!ctx->live_intervals) {
ir_allocate_unique_spill_slots(ctx);
} else {
ir_mark_empty_blocks(ctx);
ir_calc_stack_frame_size(ctx, &data);
}
Dst = &data.dasm_state;
data.dasm_state = NULL;
dasm_init(&data.dasm_state, DASM_MAXSECTION);
dasm_setupglobal(&data.dasm_state, dasm_labels, ir_lb_MAX);
dasm_setup(&data.dasm_state, dasm_actions);
dasm_growpc(&data.dasm_state, ctx->cfg_blocks_count + 1 + ctx->consts_count + 1 + 1 + 1);
if (ctx->flags & IR_FUNCTION) {
ir_emit_prologue(ctx);
ir_emit_load_params(ctx);
}
for (b = 1, bb = ctx->cfg_blocks + b; b <= ctx->cfg_blocks_count; b++, bb++) {
// if (bb->flags & IR_BB_MAY_SKIP) {
// continue;
// }
// if (ir_needs_block_label(ctx, b)) {
|=>b:
// }
for (i = bb->start, insn = ctx->ir_base + i, rule = ctx->rules + i; i <= bb->end;) {
switch (*rule) {
case IR_SKIP:
case IR_SKIP_REG:
case IR_VAR:
break;
case IR_LEA_OB:
{
ir_reg def_reg = ir_ref_reg(ctx, i);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
int32_t offset = ctx->ir_base[insn->op2].val.i32;
IR_ASSERT(def_reg >= 0 && op1_reg >= 0);
if (insn->op == IR_SUB) {
offset = -offset;
}
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)+offset]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)+offset]
}
}
break;
case IR_LEA_SI:
{
ir_reg def_reg = ir_ref_reg(ctx, i);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
int32_t scale = ctx->ir_base[insn->op2].val.i32;
IR_ASSERT(def_reg >= 0 && op1_reg >= 0);
if (scale == 2) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)*2]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)*2]
}
} else if (scale == 4) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)*4]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)*4]
}
} else if (scale == 8) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)*8]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)*8]
}
} else {
IR_ASSERT(0);
}
}
break;
case IR_LEA_SIB:
{
ir_reg def_reg = ir_ref_reg(ctx, i);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
int32_t scale = ctx->ir_base[insn->op2].val.i32;
IR_ASSERT(def_reg >= 0 && op1_reg >= 0);
if (scale == 3) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)+Rd(op1_reg)*2]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)+Ra(op1_reg)*2]
}
} else if (scale == 5) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)+Rd(op1_reg)*4]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)+Ra(op1_reg)*4]
}
} else if (scale == 9) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)+Rd(op1_reg)*8]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)+Ra(op1_reg)*8]
}
} else {
IR_ASSERT(0);
}
}
break;
case IR_LEA_IB:
{
ir_reg def_reg = ir_ref_reg(ctx, i);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_reg op2_reg = ir_ref_reg(ctx, insn->op2);
IR_ASSERT(def_reg >= 0 && op1_reg >= 0 && op2_reg >= 0);
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)+Rd(op2_reg)]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)+Ra(op2_reg)]
}
}
break;
case IR_LEA_OB_I:
{
ir_reg def_reg = ir_ref_reg(ctx, i);
ir_insn *op1_insn = &ctx->ir_base[insn->op1];
ir_reg op1_reg = ir_ref_reg(ctx, op1_insn->op1);
ir_reg op2_reg = ir_ref_reg(ctx, insn->op2);
int32_t offset = ctx->ir_base[op1_insn->op2].val.i32;
IR_ASSERT(def_reg >= 0 && op1_reg >= 0 && op2_reg >= 0);
if (op1_insn->op == IR_SUB) {
offset = -offset;
}
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)+Rd(op2_reg)+offset]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)+Ra(op2_reg)+offset]
}
}
break;
case IR_LEA_I_OB:
{
ir_reg def_reg = ir_ref_reg(ctx, i);
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_insn *op2_insn = &ctx->ir_base[insn->op2];
ir_reg op2_reg = ir_ref_reg(ctx, op2_insn->op1);
int32_t offset = ctx->ir_base[op2_insn->op2].val.i32;
IR_ASSERT(def_reg >= 0 && op1_reg >= 0 && op2_reg >= 0);
if (op2_insn->op == IR_SUB) {
offset = -offset;
}
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)+Rd(op2_reg)+offset]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)+Ra(op2_reg)+offset]
}
}
break;
case IR_LEA_SI_O:
{
ir_reg def_reg = ir_ref_reg(ctx, i);
ir_insn *op1_insn = &ctx->ir_base[insn->op1];
ir_reg op1_reg = ir_ref_reg(ctx, op1_insn->op1);
int32_t scale = ctx->ir_base[op1_insn->op2].val.i32;
int32_t offset = ctx->ir_base[insn->op2].val.i32;
IR_ASSERT(def_reg >= 0 && op1_reg >= 0);
if (insn->op == IR_SUB) {
offset = -offset;
}
if (scale == 2) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)*2+offset]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)*2+offset]
}
} else if (scale == 4) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)*4+offset]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)*4+offset]
}
} else if (scale == 8) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)*8+offset]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)*8+offset]
}
} else {
IR_ASSERT(0);
}
}
break;
case IR_LEA_SIB_O:
{
ir_reg def_reg = ir_ref_reg(ctx, i);
ir_insn *op1_insn = &ctx->ir_base[insn->op1];
ir_reg op1_reg = ir_ref_reg(ctx, op1_insn->op1);
int32_t scale = ctx->ir_base[op1_insn->op2].val.i32;
int32_t offset = ctx->ir_base[insn->op2].val.i32;
IR_ASSERT(def_reg >= 0 && op1_reg >= 0);
if (insn->op == IR_SUB) {
offset = -offset;
}
if (scale == 3) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)+Rd(op1_reg)*2+offset]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)+Ra(op1_reg)*2+offset]
}
} else if (scale == 5) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)+Rd(op1_reg)*4+offset]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)+Ra(op1_reg)*4+offset]
}
} else if (scale == 6) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)+Rd(op1_reg)*8+offset]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)+Ra(op1_reg)*8+offset]
}
} else {
IR_ASSERT(0);
}
}
break;
case IR_LEA_IB_O:
{
ir_reg def_reg = ir_ref_reg(ctx, i);
ir_insn *op1_insn = &ctx->ir_base[insn->op1];
ir_reg op1_reg = ir_ref_reg(ctx, op1_insn->op1);
ir_reg op2_reg = ir_ref_reg(ctx, op1_insn->op2);
int32_t offset = ctx->ir_base[insn->op2].val.i32;
IR_ASSERT(def_reg >= 0 && op1_reg >= 0 && op2_reg >= 0);
if (insn->op == IR_SUB) {
offset = -offset;
}
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)+Rd(op2_reg)+offset]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)+Ra(op2_reg)+offset]
}
}
break;
case IR_LEA_OB_SI:
{
ir_reg def_reg = ir_ref_reg(ctx, i);
ir_insn *op1_insn = &ctx->ir_base[insn->op1];
ir_insn *op2_insn = &ctx->ir_base[insn->op2];
ir_reg op1_reg = ir_ref_reg(ctx, op1_insn->op1);
int32_t offset = ctx->ir_base[op1_insn->op2].val.i32;
ir_reg op2_reg = ir_ref_reg(ctx, op2_insn->op1);
int32_t scale = ctx->ir_base[op2_insn->op2].val.i32;
IR_ASSERT(def_reg >= 0 && op1_reg >= 0 && op2_reg >= 0);
if (op1_insn->op == IR_SUB) {
offset = -offset;
}
if (scale == 2) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)+Rd(op2_reg)*2+offset]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)+Ra(op2_reg)*2+offset]
}
} else if (scale == 4) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)+Rd(op2_reg)*4+offset]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)+Ra(op2_reg)*4+offset]
}
} else if (scale == 8) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)+Rd(op2_reg)*8+offset]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)+Ra(op2_reg)*8+offset]
}
} else {
IR_ASSERT(0);
}
}
break;
case IR_LEA_SI_OB:
{
ir_reg def_reg = ir_ref_reg(ctx, i);
ir_insn *op1_insn = &ctx->ir_base[insn->op1];
ir_insn *op2_insn = &ctx->ir_base[insn->op2];
ir_reg op1_reg = ir_ref_reg(ctx, op1_insn->op1);
int32_t scale = ctx->ir_base[op1_insn->op2].val.i32;
ir_reg op2_reg = ir_ref_reg(ctx, op2_insn->op1);
int32_t offset = ctx->ir_base[op2_insn->op2].val.i32;
IR_ASSERT(def_reg >= 0 && op1_reg >= 0 && op2_reg >= 0);
if (op1_insn->op == IR_SUB) {
offset = -offset;
}
if (scale == 2) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op2_reg)+Rd(op1_reg)*2+offset]
} else {
| lea Ra(def_reg), aword [Ra(op2_reg)+Ra(op1_reg)*2+offset]
}
} else if (scale == 4) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op2_reg)+Rd(op1_reg)*4+offset]
} else {
| lea Ra(def_reg), aword [Ra(op2_reg)+Ra(op1_reg)*4+offset]
}
} else if (scale == 8) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op2_reg)+Rd(op1_reg)*8+offset]
} else {
| lea Ra(def_reg), aword [Ra(op2_reg)+Ra(op1_reg)*8+offset]
}
} else {
IR_ASSERT(0);
}
}
break;
case IR_LEA_B_SI:
{
ir_reg def_reg = ir_ref_reg(ctx, i);
ir_insn *op2_insn = &ctx->ir_base[insn->op2];
ir_reg op1_reg = ir_ref_reg(ctx, insn->op1);
ir_reg op2_reg = ir_ref_reg(ctx, op2_insn->op1);
int32_t scale = ctx->ir_base[op2_insn->op2].val.i32;
IR_ASSERT(def_reg >= 0 && op1_reg >= 0 && op2_reg >= 0);
if (scale == 2) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)+Rd(op2_reg)*2]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)+Ra(op2_reg)*2]
}
} else if (scale == 4) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)+Rd(op2_reg)*4]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)+Ra(op2_reg)*4]
}
} else if (scale == 8) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op1_reg)+Rd(op2_reg)*8]
} else {
| lea Ra(def_reg), aword [Ra(op1_reg)+Ra(op2_reg)*8]
}
} else {
IR_ASSERT(0);
}
}
break;
case IR_LEA_SI_B:
{
ir_reg def_reg = ir_ref_reg(ctx, i);
ir_insn *op1_insn = &ctx->ir_base[insn->op1];
ir_reg op1_reg = ir_ref_reg(ctx, op1_insn->op1);
int32_t scale = ctx->ir_base[op1_insn->op2].val.i32;
ir_reg op2_reg = ir_ref_reg(ctx, insn->op2);
IR_ASSERT(def_reg >= 0 && op1_reg >= 0 && op2_reg >= 0);
if (scale == 2) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op2_reg)+Rd(op1_reg)*2]
} else {
| lea Ra(def_reg), aword [Ra(op2_reg)+Ra(op1_reg)*2]
}
} else if (scale == 4) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), dword [Rd(op2_reg)+Rd(op1_reg)*4]
} else {
| lea Ra(def_reg), aword [Ra(op2_reg)+Ra(op1_reg)*4]
}
} else if (scale == 8) {
if (ir_type_size[insn->type] == 4) {
| lea Rd(def_reg), aword [Rd(op2_reg)+Rd(op1_reg)*8]
} else {
| lea Ra(def_reg), aword [Ra(op2_reg)+Ra(op1_reg)*8]
}
} else {
IR_ASSERT(0);
}
}
break;
case IR_INC:
case IR_DEC:
ir_emit_incdec(ctx, *rule, i, insn);
break;
case IR_MUL_2:
ir_emit_mul2(ctx, i, insn);
break;
case IR_MUL_PWR2:
ir_emit_mul_pwr2(ctx, i, insn);
break;
case IR_DIV_PWR2:
ir_emit_div_pwr2(ctx, i, insn);
break;
case IR_MOD_PWR2:
ir_emit_mod_pwr2(ctx, i, insn);
break;
case IR_SHIFT:
ir_emit_shift(ctx, i, insn);
break;
case IR_SHIFT_CONST:
ir_emit_shift_const(ctx, i, insn);
break;
case IR_OP_INT:
ir_emit_op_int(ctx, i, insn);
break;
case IR_ABS_INT:
ir_emit_abs_int(ctx, i, insn);
break;
case IR_BOOL_NOT_INT:
ir_emit_bool_not_int(ctx, i, insn);
break;
case IR_OP_FP:
ir_emit_op_fp(ctx, i, insn);
break;
case IR_BINOP_INT:
ir_emit_binop_int(ctx, i, insn);
break;
case IR_BINOP_SSE2:
ir_emit_binop_sse2(ctx, i, insn);
break;
case IR_BINOP_AVX:
ir_emit_binop_avx(ctx, i, insn);
break;
case IR_MUL_INT:
case IR_DIV_INT:
case IR_MOD_INT:
ir_emit_mul_div_mod(ctx, i, insn);
break;
case IR_CMP_INT:
ir_emit_cmp_int(ctx, i, insn);
break;
case IR_CMP_FP:
ir_emit_cmp_fp(ctx, i, insn);
break;
case IR_COPY_INT:
ir_emit_copy_int(ctx, i, insn);
break;
case IR_COPY_FP:
ir_emit_copy_fp(ctx, i, insn);
break;
case IR_CMP_AND_BRANCH_INT:
ir_emit_cmp_and_branch_int(ctx, b, i, insn);
break;
case IR_CMP_AND_BRANCH_FP:
ir_emit_cmp_and_branch_fp(ctx, b, i, insn);
break;
case IR_IF_INT:
ir_emit_if_int(ctx, b, i, insn);
break;
case IR_SWITCH:
ir_emit_switch(ctx, i, insn);
break;
case IR_END:
case IR_LOOP_END:
if (bb->flags & IR_BB_DESSA_MOVES) {
ir_gen_dessa_moves(ctx, b, ir_emit_dessa_move);
}
IR_ASSERT(bb->successors_count == 1);
target = ir_skip_empty_blocks(ctx, ctx->cfg_edges[bb->successors]);
if (target != ir_skip_empty_blocks(ctx, b + 1)) {
| jmp =>target
}
break;
case IR_RETURN_VOID:
ir_emit_return_void(ctx);
break;
case IR_RETURN_INT:
ir_emit_return_int(ctx, insn);
break;
case IR_RETURN_FP:
ir_emit_return_fp(ctx, insn);
break;
case IR_CALL:
ir_emit_call(ctx, i, insn);
break;
case IR_TAILCALL:
ir_emit_tailcall(ctx, i, insn);
break;
case IR_VADDR:
ir_emit_vaddr(ctx, i, insn);
break;
case IR_VLOAD_INT:
ir_emit_vload_int(ctx, i, insn);
break;
case IR_VLOAD_FP:
ir_emit_vload_fp(ctx, i, insn);
break;
case IR_VSTORE_INT:
ir_emit_vstore_int(ctx, insn);
break;
case IR_VSTORE_FP:
ir_emit_vstore_fp(ctx, insn);
break;
case IR_LOAD_INT:
ir_emit_load_int(ctx, i, insn);
break;
case IR_LOAD_FP:
ir_emit_load_fp(ctx, i, insn);
break;
case IR_STORE_INT:
ir_emit_store_int(ctx, insn);
break;
case IR_STORE_FP:
ir_emit_store_fp(ctx, insn);
break;
case IR_ALLOCA:
ir_emit_alloca(ctx, i, insn);
break;
default:
IR_ASSERT(0 && "NIY rule/insruction");
break;
}
n = ir_operands_count(ctx, insn);
n = 1 + (n >> 2); // support for multi-word instructions like MERGE and PHI
i += n;
insn += n;
rule += n;
}
}
if (data.rodata_label) {
|.rodata
}
for (i = IR_UNUSED + 1, insn = ctx->ir_base - i; i < ctx->consts_count; i++, insn--) {
if (insn->emit_const) {
if (IR_IS_TYPE_FP(insn->type)) {
int label = ctx->cfg_blocks_count + i;
if (!data.rodata_label) {
data.rodata_label = ctx->cfg_blocks_count + ctx->consts_count + 2;
|.rodata
|=>data.rodata_label:
}
if (insn->type == IR_DOUBLE) {
|.align 8
|=>label:
|.dword insn->val.u32, insn->val.u32_hi
} else if (insn->type == IR_FLOAT) {
|.align 4
|=>label:
|.dword insn->val.u32
} else {
IR_ASSERT(0);
}
} else if (insn->op == IR_STR) {
int label = ctx->cfg_blocks_count + i;
const char *str = ir_get_str(ctx, insn->val.addr);
int i = 0;
if (!data.rodata_label) {
data.rodata_label = ctx->cfg_blocks_count + ctx->consts_count + 2;
|.rodata
|=>data.rodata_label:
}
|.align 8
|=>label:
while (str[i]) {
char c = str[i];
if (c == '\\') {
if (str[i+1] == '\\') {
i++;
c = '\\';
} else if (str[i+1] == 'n') {
i++;
c = '\n';
} else if (str[i+1] == 'r') {
i++;
c = '\r';
} else if (str[i+1] == 't') {
i++;
c = '\t';
}
}
|.byte c
i++;
}
|.byte 0
} else {
IR_ASSERT(0);
}
}
}
if (data.rodata_label) {
|.code
}
ret = dasm_link(&data.dasm_state, size);
if (ret != DASM_S_OK) {
return 0;
}
entry = ir_mem_mmap(4096);
ir_mem_unprotect(entry, 4096);
ret = dasm_encode(&data.dasm_state, entry);
if (data.rodata_label) {
int rodata = dasm_getpclabel(&data.dasm_state, data.rodata_label);
*size = rodata;
} else if (data.jmp_table_label) {
int rodata = dasm_getpclabel(&data.dasm_state, data.jmp_table_label);
*size = rodata;
}
if (ret != DASM_S_OK) {
IR_ASSERT(0);
ir_mem_unmap(entry, 4096);
return NULL;
}
dasm_free(&data.dasm_state);
ir_mem_flush(entry, 4096);
ir_mem_protect(entry, 4096);
return entry;
}
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