[llvm] fc467b4 - [AMDGPU] Avoid repeated hash lookups (NFC) (#111787)

[via llvm-commits]

Author: Kazu Hirata
Date: 2024-10-10T08:18:28-07:00
New Revision: fc467b477545c9f8ef4dc36ecee4dcd2a7457787

URL: https://github.com/llvm/llvm-project/commit/fc467b477545c9f8ef4dc36ecee4dcd2a7457787
DIFF: https://github.com/llvm/llvm-project/commit/fc467b477545c9f8ef4dc36ecee4dcd2a7457787.diff

LOG: [AMDGPU] Avoid repeated hash lookups (NFC) (#111787)

Added: 
    

Modified: 
    llvm/lib/Target/AMDGPU/R600ISelLowering.cpp

Removed: 
    


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diff  --git a/llvm/lib/Target/AMDGPU/R600ISelLowering.cpp b/llvm/lib/Target/AMDGPU/R600ISelLowering.cpp
index 7e4d9d21a0b397..1b88fdd3ab2e1c 100644
--- a/llvm/lib/Target/AMDGPU/R600ISelLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/R600ISelLowering.cpp
@@ -1647,16 +1647,18 @@ SDValue R600TargetLowering::OptimizeSwizzle(SDValue BuildVector, SDValue Swz[],
   BuildVector = CompactSwizzlableVector(DAG, BuildVector, SwizzleRemap);
   for (unsigned i = 0; i < 4; i++) {
     unsigned Idx = Swz[i]->getAsZExtVal();
-    if (SwizzleRemap.contains(Idx))
-      Swz[i] = DAG.getConstant(SwizzleRemap[Idx], DL, MVT::i32);
+    auto It = SwizzleRemap.find(Idx);
+    if (It != SwizzleRemap.end())
+      Swz[i] = DAG.getConstant(It->second, DL, MVT::i32);
   }
 
   SwizzleRemap.clear();
   BuildVector = ReorganizeVector(DAG, BuildVector, SwizzleRemap);
   for (unsigned i = 0; i < 4; i++) {
     unsigned Idx = Swz[i]->getAsZExtVal();
-    if (SwizzleRemap.contains(Idx))
-      Swz[i] = DAG.getConstant(SwizzleRemap[Idx], DL, MVT::i32);
+    auto It = SwizzleRemap.find(Idx);
+    if (It != SwizzleRemap.end())
+      Swz[i] = DAG.getConstant(It->second, DL, MVT::i32);
   }
 
   return BuildVector;