[llvm] 364e60b - [X86] Avoid repeated hash lookups (NFC) (#131963)

[via llvm-commits]

Author: Kazu Hirata
Date: 2025-03-19T07:15:21-07:00
New Revision: 364e60b6e41d49bc08be21cc279bba57ddabf679

URL: https://github.com/llvm/llvm-project/commit/364e60b6e41d49bc08be21cc279bba57ddabf679
DIFF: https://github.com/llvm/llvm-project/commit/364e60b6e41d49bc08be21cc279bba57ddabf679.diff

LOG: [X86] Avoid repeated hash lookups (NFC) (#131963)

Added: 
    

Modified: 
    llvm/lib/Target/X86/X86DiscriminateMemOps.cpp

Removed: 
    


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diff  --git a/llvm/lib/Target/X86/X86DiscriminateMemOps.cpp b/llvm/lib/Target/X86/X86DiscriminateMemOps.cpp
index 6c7e6bf041995..bd151a450394a 100644
--- a/llvm/lib/Target/X86/X86DiscriminateMemOps.cpp
+++ b/llvm/lib/Target/X86/X86DiscriminateMemOps.cpp
@@ -113,8 +113,8 @@ bool X86DiscriminateMemOps::runOnMachineFunction(MachineFunction &MF) {
       if (BypassPrefetchInstructions && IsPrefetchOpcode(MI.getDesc().Opcode))
         continue;
       Location Loc = diToLocation(DI);
-      MemOpDiscriminators[Loc] =
-          std::max(MemOpDiscriminators[Loc], DI->getBaseDiscriminator());
+      unsigned &Disc = MemOpDiscriminators[Loc];
+      Disc = std::max(Disc, DI->getBaseDiscriminator());
     }
   }