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| author | Alexis Engelke <engelke@in.tum.de> | 2024-06-21 13:18:35 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-06-21 13:18:35 +0200 |
| commit | 739a9605677dd736971b17a7888f9d18fd245904 (patch) | |
| tree | d91da3cdc2dcf38a63a8e0a01e844717fad5079e /llvm/lib/CodeGen/RegAllocBasic.cpp | |
| parent | c7c636189adc45251be2b7cc53b6b047e1ac3536 (diff) | |
| download | llvm-739a9605677dd736971b17a7888f9d18fd245904.zip llvm-739a9605677dd736971b17a7888f9d18fd245904.tar.gz llvm-739a9605677dd736971b17a7888f9d18fd245904.tar.bz2 | |
[RegAlloc] Don't call always-true ShouldAllocClass (#96296)
Previously, there was at least one virtual function call for every
allocated register. The only users of this feature are AMDGPU and RISC-V
(RVV), other targets don't use this. To easily identify these cases,
change the default functor to nullptr and don't call it for every
allocated register.
Diffstat (limited to 'llvm/lib/CodeGen/RegAllocBasic.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/RegAllocBasic.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/RegAllocBasic.cpp b/llvm/lib/CodeGen/RegAllocBasic.cpp index 181337c..5d84e1e 100644 --- a/llvm/lib/CodeGen/RegAllocBasic.cpp +++ b/llvm/lib/CodeGen/RegAllocBasic.cpp @@ -74,7 +74,7 @@ class RABasic : public MachineFunctionPass, void LRE_WillShrinkVirtReg(Register) override; public: - RABasic(const RegClassFilterFunc F = allocateAllRegClasses); + RABasic(const RegClassFilterFunc F = nullptr); /// Return the pass name. StringRef getPassName() const override { return "Basic Register Allocator"; } |