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| author | Fangrui Song <i@maskray.me> | 2024-06-27 09:43:32 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-06-27 09:43:32 -0700 |
| commit | aa3589f0ccc0848fa8d5847afdbc8dd9b9c624e7 (patch) | |
| tree | 72bd74143966a518e45a0dbbc9a33fe59467c991 /llvm/lib/MC/MCObjectStreamer.cpp | |
| parent | 4168233badd4de41fee1bdc0a9701c5360ea1ead (diff) | |
| download | llvm-aa3589f0ccc0848fa8d5847afdbc8dd9b9c624e7.zip llvm-aa3589f0ccc0848fa8d5847afdbc8dd9b9c624e7.tar.gz llvm-aa3589f0ccc0848fa8d5847afdbc8dd9b9c624e7.tar.bz2 | |
[MC,X86] emitInstruction: remove virtual function calls due to Intel JCC Erratum
https://reviews.llvm.org/D70157 (for Intel Jump Conditional Code
Erratum) introduced two virtual function calls in the generic
MCObjectStreamer::emitInstruction, which added some overhead.
This patch removes the virtual function overhead:
* Define `llvm::X86_MC::emitInstruction` that calls `emitInstruction{Begin,End}`.
* Define {X86ELFStreamer,X86WinCOFFStreamer}::emitInstruction to call `llvm::X86_MC::emitInstruction`
Pull Request: https://github.com/llvm/llvm-project/pull/96835
Diffstat (limited to 'llvm/lib/MC/MCObjectStreamer.cpp')
| -rw-r--r-- | llvm/lib/MC/MCObjectStreamer.cpp | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/llvm/lib/MC/MCObjectStreamer.cpp b/llvm/lib/MC/MCObjectStreamer.cpp index 5dc73c5..fec1cce 100644 --- a/llvm/lib/MC/MCObjectStreamer.cpp +++ b/llvm/lib/MC/MCObjectStreamer.cpp @@ -330,9 +330,7 @@ void MCObjectStreamer::emitInstruction(const MCInst &Inst, "' cannot have instructions"); return; } - getAssembler().getBackend().emitInstructionBegin(*this, Inst, STI); emitInstructionImpl(Inst, STI); - getAssembler().getBackend().emitInstructionEnd(*this, Inst); } void MCObjectStreamer::emitInstructionImpl(const MCInst &Inst, |