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ir/ir_x86.h

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C
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#ifndef IR_X86_H
#define IR_X86_H
#if defined(__x86_64__) || defined(_WIN64)
# define IR_GP_REGS(_) \
_(R0, rax, eax, ax, al, ah) \
_(R1, rcx, ecx, cx, cl, ch) \
_(R2, rdx, edx, dx, dl, dh) \
_(R3, rbx, ebx, bx, bl, bh) \
_(R4, rsp, esp, __, __, __) \
_(R5, rbp, ebp, bp, r5b, __) \
_(R6, rsi, esi, si, r6b, __) \
_(R7, rdi, edi, di, r7b, __) \
_(R8, r8, r8d, r8w, r8b, __) \
_(R9, r9, r9d, r9w, r9b, __) \
_(R10, r10, r10d, r10w, r10b, __) \
_(R11, r11, r11d, r11w, r11b, __) \
_(R12, r12, r12d, r12w, r12b, __) \
_(R13, r13, r13d, r13w, r13b, __) \
_(R14, r14, r14d, r14w, r14b, __) \
_(R15, r15, r15d, r15w, r15b, __) \
# define IR_FP_REGS(_) \
_(XMM0, xmm0) \
_(XMM1, xmm1) \
_(XMM2, xmm2) \
_(XMM3, xmm3) \
_(XMM4, xmm4) \
_(XMM5, xmm5) \
_(XMM6, xmm6) \
_(XMM7, xmm7) \
_(XMM8, xmm8) \
_(XMM9, xmm9) \
_(XMM10, xmm10) \
_(XMM11, xmm11) \
_(XMM12, xmm12) \
_(XMM13, xmm13) \
_(XMM14, xmm14) \
_(XMM15, xmm15) \
#else
# define IR_GP_REGS(_) \
_(R0, ___, eax, ax, al, ah) \
_(R1, ___, ecx, cx, cl, ch) \
_(R2, ___, edx, dx, dl, dh) \
_(R3, ___, ebx, bx, bl, bh) \
_(R4, ___, esp, __, __, __) \
_(R5, ___, ebp, bp, __, __) \
_(R6, ___, esi, si, __, __) \
_(R7, ___, edi, di, __, __) \
# define IR_FP_REGS(_) \
_(XMM0, xmm0) \
_(XMM1, xmm1) \
_(XMM2, xmm2) \
_(XMM3, xmm3) \
_(XMM4, xmm4) \
_(XMM5, xmm5) \
_(XMM6, xmm6) \
_(XMM7, xmm7) \
#endif
#define IR_GP_REG_ENUM(code, name64, name32, name16, name8, name8h) \
IR_REG_ ## code,
#define IR_FP_REG_ENUM(code, name) \
IR_REG_ ## code,
typedef enum _ir_reg {
IR_REG_NONE = -1,
IR_GP_REGS(IR_GP_REG_ENUM)
IR_FP_REGS(IR_FP_REG_ENUM)
IR_REG_NUM,
} ir_reg;
/* TODO: separate common code */
#if (IR_REG_NUM <= 32)
# define IR_REGSET_64BIT 0
#else
# define IR_REGSET_64BIT 1
#endif
#if IR_REGSET_64BIT
typedef uint64_t ir_regset;
#else
typedef uint32_t ir_regset;
#endif
#define IR_REGSET_EMPTY 0
#define IR_REGSET_IS_EMPTY(regset) \
(regset == IR_REGSET_EMPTY)
#define IR_REGSET_IS_SINGLETON(regset) \
(regset && !(regset & (regset - 1)))
#if (!IR_REGSET_64BIT)
#define IR_REGSET(reg) \
(1u << (reg))
#else
#define IR_REGSET(reg) \
(1ull << (reg))
#endif
#if (!IR_REGSET_64BIT)
#define IR_REGSET_INTERVAL(reg1, reg2) \
(((1u << ((reg2) - (reg1) + 1)) - 1) << (reg1))
#else
#define IR_REGSET_INTERVAL(reg1, reg2) \
(((1ull << ((reg2) - (reg1) + 1)) - 1) << (reg1))
#endif
#define IR_REGSET_IN(regset, reg) \
(((regset) & IR_REGSET(reg)) != 0)
#define IR_REGSET_INCL(regset, reg) \
(regset) |= IR_REGSET(reg)
#define IR_REGSET_EXCL(regset, reg) \
(regset) &= ~IR_REGSET(reg)
#define IR_REGSET_UNION(set1, set2) \
((set1) | (set2))
#define IR_REGSET_INTERSECTION(set1, set2) \
((set1) & (set2))
#define IR_REGSET_DIFFERENCE(set1, set2) \
((set1) & ~(set2))
#if !defined(_WIN32)
# if (!IR_REGSET_64BIT)
# define IR_REGSET_FIRST(set) ((ir_reg)__builtin_ctz(set))
# define IR_REGSET_LAST(set) ((ir_reg)(__builtin_clz(set)^31))
# else
# define IR_REGSET_FIRST(set) ((ir_reg)__builtin_ctzll(set))
# define ir_REGSET_LAST(set) ((ir_reg)(__builtin_clzll(set)^63))
# endif
#else
# include <intrin.h>
uint32_t __inline __ir_ctz(uint32_t value) {
DWORD trailing_zero = 0;
if (_BitScanForward(&trailing_zero, value)) {
return trailing_zero;
}
return 32;
}
uint32_t __inline __ir_clz(uint32_t value) {
DWORD leading_zero = 0;
if (_BitScanReverse(&leading_zero, value)) {
return 31 - leading_zero;
}
return 32;
}
# define IR_REGSET_FIRST(set) ((ir_reg)__ir_ctz(set))
# define IR_REGSET_LAST(set) ((ir_reg)(__ir_clz(set)^31))
#endif
#define IR_REGSET_FOREACH(set, reg) \
do { \
ir_regset _tmp = (set); \
while (!IR_REGSET_IS_EMPTY(_tmp)) { \
ir_reg _reg = IR_REGSET_FIRST(_tmp); \
IR_REGSET_EXCL(_tmp, _reg); \
reg = _reg; \
#define IR_REGSET_FOREACH_END() \
} \
} while (0)
#define IR_REG_RAX IR_REG_R0
#define IR_REG_RCX IR_REG_R1
#define IR_REG_RDX IR_REG_R2
#define IR_REG_RBX IR_REG_R3
#define IR_REG_RSP IR_REG_R4
#define IR_REG_RBP IR_REG_R5
#define IR_REG_RSI IR_REG_R6
#define IR_REG_RDI IR_REG_R7
#define IR_REG_GP_FIRST IR_REG_R0
#define IR_REG_FP_FIRST IR_REG_XMM0
#define IR_REG_GP_LAST (IR_REG_FP_FIRST - 1)
#define IR_REG_FP_LAST (IR_REG_NUM - 1)
#define IR_REG_STACK_POINTER \
IR_REG_RSP
#define IR_REG_FRAME_POINTER \
IR_REG_RBP
#define IR_REGSET_FIXED \
(IR_REGSET(IR_REG_RSP))
#define IR_REGSET_GP \
IR_REGSET_DIFFERENCE(IR_REGSET_INTERVAL(IR_REG_GP_FIRST, IR_REG_GP_LAST), IR_REGSET_FIXED)
#define IR_REGSET_FP \
IR_REGSET_DIFFERENCE(IR_REGSET_INTERVAL(IR_REG_FP_FIRST, IR_REG_FP_LAST), IR_REGSET_FIXED)
/* Calling Convention */
#ifdef _WIN64
# define IR_REG_INT_RET1 IR_REG_RAX
# define IR_REG_FP_RET1 IR_REG_XMM0
# define IR_REG_INT_ARGS 4
# define IR_REG_FP_ARGS 4
# define IR_REG_INT_ARG1 IR_REG_RCX
# define IR_REG_INT_ARG2 IR_REG_RDX
# define IR_REG_INT_ARG3 IR_REG_R8
# define IR_REG_INT_ARG4 IR_REG_R9
# define IR_REG_FP_ARG1 IR_REG_XMM0
# define IR_REG_FP_ARG2 IR_REG_XMM1
# define IR_REG_FP_ARG3 IR_REG_XMM2
# define IR_REG_FP_ARG4 IR_REG_XMM3
# define IR_REGSET_SCRATCH \
(IR_REGSET_INTERVAL(IR_REG_RAX, IR_REG_RDX) \
| IR_REGSET_INTERVAL(IR_REG_R8, IR_REG_R11) \
| IR_REGSET_FP)
# define IR_REGSET_PRESERVED \
(IR_REGSET(IR_REG_RBX) \
| IR_REGSET_INTERVAL(IR_REG_RBP, IR_REG_RDI) \
| IR_REGSET_INTERVAL(IR_REG_R12, IR_REG_R15))
#elif defined(__x86_64__)
# define IR_REG_INT_RET1 IR_REG_RAX
# define IR_REG_FP_RET1 IR_REG_XMM0
# define IR_REG_INT_ARGS 6
# define IR_REG_FP_ARGS 8
# define IR_REG_INT_ARG1 IR_REG_RDI
# define IR_REG_INT_ARG2 IR_REG_RSI
# define IR_REG_INT_ARG3 IR_REG_RDX
# define IR_REG_INT_ARG4 IR_REG_RCX
# define IR_REG_INT_ARG5 IR_REG_R8
# define IR_REG_INT_ARG6 IR_REG_R9
# define IR_REG_FP_ARG1 IR_REG_XMM0
# define IR_REG_FP_ARG2 IR_REG_XMM1
# define IR_REG_FP_ARG3 IR_REG_XMM2
# define IR_REG_FP_ARG4 IR_REG_XMM3
# define IR_REG_FP_ARG5 IR_REG_XMM4
# define IR_REG_FP_ARG6 IR_REG_XMM5
# define IR_REG_FP_ARG7 IR_REG_XMM6
# define IR_REG_FP_ARG8 IR_REG_XMM7
# define IR_REGSET_SCRATCH \
(IR_REGSET_INTERVAL(IR_REG_RAX, IR_REG_RDX) \
| IR_REGSET_INTERVAL(IR_REG_RSI, IR_REG_RDI) \
| IR_REGSET_INTERVAL(IR_REG_R8, IR_REG_R11) \
| IR_REGSET_FP)
# define IR_REGSET_PRESERVED \
(IR_REGSET(IR_REG_RBX) \
| IR_REGSET(IR_REG_RBP) \
| IR_REGSET_INTERVAL(IR_REG_R12, IR_REG_R15))
#else
# define IR_REG_INT_RET1 IR_REG_RAX
# define IR_REG_INT_ARGS 0
# define IR_REG_FP_ARGS 0
# define IR_REG_INT_FCARGS 2
# define IR_REG_FP_FCARGS 0
# define IR_REG_INT_FCARG1 IR_REG_RCX
# define IR_REG_INT_FCARG2 IR_REG_RDX
# define IR_REGSET_SCRATCH \
(IR_REGSET_INTERVAL(IR_REG_RAX, IR_REG_RDX) | IR_REGSET_FP)
# define IR_REGSET_PRESERVED \
(IR_REGSET(IR_REG_RBX) \
| IR_REGSET(IR_REG_RBP) \
| IR_REGSET_INTRAVLA(IR_REG_RSI, IR_REG_RDI))
#endif
typedef struct _ir_tmp_reg {
uint8_t num;
uint8_t type;
uint8_t start;
uint8_t end;
} ir_tmp_reg;
bool ir_needs_vreg(ir_ctx *ctx, ir_ref ref);
/* Registers modified by the given instruction */
ir_regset ir_get_scratch_regset(ir_ctx *ctx, ir_ref ref, ir_live_pos *start, ir_live_pos *end);
ir_reg ir_uses_fixed_reg(ir_ctx *ctx, ir_ref ref, int op_num);
bool ir_result_reuses_op1_reg(ir_ctx *ctx, ir_ref ref);
uint8_t ir_get_use_flags(ir_ctx *ctx, ir_ref ref, int op_num);
int ir_get_temporary_regs(ir_ctx *ctx, ir_ref ref, ir_tmp_reg *tmp_regs);
#endif /* IR_X86_H */
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