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[midend-GVN]初步构建GVN，能够优化部分CSE无法处理的子表达式但是有错误需要debug。

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rain2133
2025-08-16 15:38:41 +08:00
parent fa33bf5134
commit 467f2f6b24
4 changed files with 466 additions and 2 deletions
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4
src/midend/IR.cpp
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@@ -847,7 +847,7 @@ void CondBrInst::print(std::ostream &os) const {
os << "%tmp_cond_" << condName << "_" << uniqueSuffix << " = icmp ne i32 ";
printOperand(os, condition);
os << ", 0\n br i1 %tmp_cond_" << condName << "_" << uniqueSuffix;
os << ", 0\n br i1 %tmp_cond_" << condName << "_" << uniqueSuffix;
os << ", label %";
printBlockName(os, getThenBlock());
@@ -886,7 +886,7 @@ void MemsetInst::print(std::ostream &os) const {
// This is done at print time to avoid modifying the IR structure
os << "%tmp_bitcast_" << ptr->getName() << " = bitcast " << *ptr->getType() << " ";
printOperand(os, ptr);
os << " to i8*\n ";
os << " to i8*\n ";
// Now call memset with the bitcast result
os << "call void @llvm.memset.p0i8.i32(i8* %tmp_bitcast_" << ptr->getName() << ", i8 ";