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Fixed GH Issue #34 (Simple if-else IR program compile failure)

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This commit is contained in:
Dmitry Stogov 2023-06-05 14:21:03 +03:00
parent 4e01e7251e
commit b5bb5f869a
2 changed files with 34 additions and 9 deletions
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11
ir_x86.dasc
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@ -604,10 +604,8 @@ op2_const:
flags = IR_USE_MUST_BE_IN_REG | IR_OP1_MUST_BE_IN_REG | IR_OP2_SHOULD_BE_IN_REG;
if (IR_IS_CONST_REF(insn->op1)) {
const ir_insn *val_insn = &ctx->ir_base[insn->op1];
if (ir_type_size[val_insn->type] == 8 && !IR_IS_32BIT(val_insn->type, val_insn->val)) {
constraints->tmp_regs[0] = IR_TMP_REG(1, val_insn->type, IR_LOAD_SUB_REF, IR_DEF_SUB_REF);
n = 1;
}
constraints->tmp_regs[0] = IR_TMP_REG(1, val_insn->type, IR_LOAD_SUB_REF, IR_DEF_SUB_REF);
n = 1;
} else if (ir_rule(ctx, insn->op1) & IR_FUSED) {
flags = IR_USE_MUST_BE_IN_REG | IR_OP2_MUST_BE_IN_REG;
}
@ -619,11 +617,6 @@ op2_const:
n++;
}
}
if (n == 0 && IR_IS_CONST_REF(insn->op1) && IR_IS_CONST_REF(insn->op2)) {
insn = &ctx->ir_base[insn->op1];
constraints->tmp_regs[n] = IR_TMP_REG(2, insn->type, IR_LOAD_SUB_REF, IR_DEF_SUB_REF);
n++;
}
break;
case IR_CMP_FP:
insn = &ctx->ir_base[ref];

32
tests/bugs/gh-00034.irt Normal file
View File

@ -0,0 +1,32 @@
--TEST--
GH-34: Simple if-else IR program compile failure
--TARGET--
x86_64
--ARGS--
-O0 -S
--CODE--
{
uintptr_t c_1 = 0;
bool c_2 = 0;
bool c_3 = 1;
int32_t c_4 = 1;
int32_t c_5 = 4;
l_1 = START(l_9);
int32_t p = PARAM(l_1, "p", 1);
bool d_2 = LT(c_4, c_5);
l_3 = IF(l_1, d_2);
l_4 = IF_TRUE(l_3);
l_5 = END(l_4);
l_6 = IF_FALSE(l_3);
l_7 = END(l_6);
l_8 = MERGE(l_5, l_7);
l_9 = RETURN(l_8, c_5);
}
--EXPECT--
test:
movl $1, %eax
cmpl $4, %eax
jge .L1
.L1:
movl $4, %eax
retq