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| author | Richard-Qin-X <richard.qin.001@gmail.com> | 2026-08-11 18:27:54 +0800 |
|---|---|---|
| committer | Richard-Qin-X <richard.qin.001@gmail.com> | 2026-08-11 18:27:54 +0800 |
| commit | fc09d2213407d3b7cfcf306368aff9916e359a2d (patch) | |
| tree | 84b9ba34d7af5c25cb675fde2165830d327c7321 /backend/lib/Target/RISCV | |
| parent | f7b25b15eaed953baa50dd2cb3e711a88a8927df (diff) | |
| download | rcc-project-fc09d2213407d3b7cfcf306368aff9916e359a2d.tar.gz rcc-project-fc09d2213407d3b7cfcf306368aff9916e359a2d.tar.xz | |
[RISCV] Preserve live constants when folding extensions
Diffstat (limited to 'backend/lib/Target/RISCV')
| -rw-r--r-- | backend/lib/Target/RISCV/RISCVCodeGen.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/backend/lib/Target/RISCV/RISCVCodeGen.cpp b/backend/lib/Target/RISCV/RISCVCodeGen.cpp index 9cf7b53..bc437c0 100644 --- a/backend/lib/Target/RISCV/RISCVCodeGen.cpp +++ b/backend/lib/Target/RISCV/RISCVCodeGen.cpp @@ -127,7 +127,8 @@ extendIntegerImmediate(const IntegerImmediate &Value, std::uint32_t DestinationW return makeUnexpected(ErrorCode::VerificationError, "RISC-V constant extension requires virtual-register operands"); } - const MachineOperand *SourceDefinition = Function.registerInfo().getUniqueVRegDef(*Source); + const Register SourceRegister = *Source; + const MachineOperand *SourceDefinition = Function.registerInfo().getUniqueVRegDef(SourceRegister); const MachineInstr *SourceDef = SourceDefinition == nullptr ? nullptr : SourceDefinition->parent(); if (SourceDef == nullptr || SourceDef->opcode() != opcode(GenericOpcode::G_CONSTANT)) return makeUnexpected(ErrorCode::Unsupported, @@ -161,7 +162,7 @@ extendIntegerImmediate(const IntegerImmediate &Value, std::uint32_t DestinationW if (!Added) return std::unexpected(Added.error()); - if (Function.registerInfo().useEmpty(*Source)) { + if (Function.registerInfo().useEmpty(SourceRegister)) { MachineInstr *Def = const_cast<MachineInstr *>(SourceDef); MachineBasicBlock *Parent = Def->parent(); if (Parent == nullptr) |