gh0s7/mysysy
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[backend]修复了溢出位置错误的问题

Browse Source
This commit is contained in:
Lixuanwang
2025-08-03 23:28:38 +08:00
parent e4ad23a1a5
commit c8a8bf9a37
1 changed files with 6 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
src/backend/RISCv64/RISCv64RegAlloc.cpp
View File

@ -656,7 +656,7 @@ void RISCv64RegAlloc::rewriteProgram() {
StackFrameInfo& frame_info = MFunc->getFrameInfo(); StackFrameInfo& frame_info = MFunc->getFrameInfo();
// 使用 EFI Pass 确定的 locals_end_offset 作为溢出分配的基准。 // 使用 EFI Pass 确定的 locals_end_offset 作为溢出分配的基准。
// locals_end_offset 本身是负数，代表局部变量区域的下边界地址。 // locals_end_offset 本身是负数，代表局部变量区域的下边界地址。
int spill_current_offset = frame_info.locals_end_offset; int spill_current_offset = frame_info.locals_end_offset - frame_info.spill_size;
// 保存溢出区域的起始点，用于最后计算总的 spill_size // 保存溢出区域的起始点，用于最后计算总的 spill_size
const int spill_start_offset = frame_info.locals_end_offset; const int spill_start_offset = frame_info.locals_end_offset;
@ -787,6 +787,11 @@ void RISCv64RegAlloc::rewriteProgram() {
std::make_unique<ImmOperand>(frame_info.spill_offsets.at(old_vreg)) std::make_unique<ImmOperand>(frame_info.spill_offsets.at(old_vreg))
)); ));
new_instructions.push_back(std::move(store)); new_instructions.push_back(std::move(store));
if (DEEPERDEBUG) {
std::cerr << "[Spill] Inserted spill store for %vreg" << old_vreg
<< " at offset " << frame_info.spill_offsets.at(old_vreg)
<< " with new temp vreg " << regIdToString(new_temp_vreg) << ".\n";
}
} }
} }
mbb->getInstructions() = std::move(new_instructions); mbb->getInstructions() = std::move(new_instructions);