[llvm] db23f27 - [X86] X86PreTileConfig - Use const-ref iterator in for-range loop. NFCI.

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2021-09-17T14:04:53+01:00
New Revision: db23f27786d9cea6f3d947d877b6b3a301e795ea

URL: https://github.com/llvm/llvm-project/commit/db23f27786d9cea6f3d947d877b6b3a301e795ea
DIFF: https://github.com/llvm/llvm-project/commit/db23f27786d9cea6f3d947d877b6b3a301e795ea.diff

LOG: [X86] X86PreTileConfig - Use const-ref iterator in for-range loop. NFCI.

Avoid unnecessary copies, reported by MSVC static analyzer.

Added: 
    

Modified: 
    llvm/lib/Target/X86/X86PreTileConfig.cpp

Removed: 
    


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diff  --git a/llvm/lib/Target/X86/X86PreTileConfig.cpp b/llvm/lib/Target/X86/X86PreTileConfig.cpp
index b85a0b61d6f6..53aa8f99ff1e 100644
--- a/llvm/lib/Target/X86/X86PreTileConfig.cpp
+++ b/llvm/lib/Target/X86/X86PreTileConfig.cpp
@@ -323,7 +323,7 @@ bool X86PreTileConfig::runOnMachineFunction(MachineFunction &MF) {
       ST.getTileConfigSize(), ST.getTileConfigAlignment(), false);
 
   // Try to insert for the tile config live in points.
-  for (auto I : CfgNeedInsert) {
+  for (const auto &I : CfgNeedInsert) {
     SmallSet<MIRef, 8> InsertPoints;
     SmallVector<MIRef, 8> WorkList({I});
     while (!WorkList.empty()) {