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[backend]添加了一个Pass，将调用者、被调用者寄存器实现转移到其中

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Lixuanwang
2025-07-26 18:38:04 +08:00
parent 8ae7478ef3
commit 540742be0c
7 changed files with 142 additions and 57 deletions
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40
src/RISCv64AsmPrinter.cpp
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@@ -46,46 +46,6 @@ void RISCv64AsmPrinter::printPrologue() {
*OS << " sd s0, " << (aligned_stack_size - 16) << "(sp)\n";
*OS << " addi s0, sp, " << aligned_stack_size << "\n";
}
// // 为函数参数分配寄存器
// Function* F = MFunc->getFunc();
// if (F && F->getEntryBlock()) {
// int arg_idx = 0;
// RISCv64ISel* isel = MFunc->getISel();
// // 获取函数所有参数的类型列表
// auto param_types = F->getParamTypes();
// for (AllocaInst* alloca_for_param : F->getEntryBlock()->getArguments()) {
// if (arg_idx >= 8) break;
// unsigned vreg = isel->getVReg(alloca_for_param);
// if (frame_info.alloca_offsets.count(vreg)) {
// int offset = frame_info.alloca_offsets.at(vreg);
// auto arg_reg = static_cast<PhysicalReg>(static_cast<int>(PhysicalReg::A0) + arg_idx);
// // 1. 获取当前参数的真实类型
// // 注意：F->getParamTypes() 返回的是一个 range-based view，需要转换为vector或直接使用
// Type* current_param_type = nullptr;
// int temp_idx = 0;
// for(auto p_type : param_types) {
// if (temp_idx == arg_idx) {
// current_param_type = p_type;
// break;
// }
// temp_idx++;
// }
// assert(current_param_type && "Could not find parameter type.");
// // 2. 根据类型决定使用 "sw" 还是 "sd"
// const char* store_op = current_param_type->isPointer() ? "sd" : "sw";
// // 3. 打印正确的存储指令
// *OS << " " << store_op << " " << regToString(arg_reg) << ", " << offset << "(s0)\n";
// }
// arg_idx++;
// }
// }
}
void RISCv64AsmPrinter::printEpilogue() {