[PATCH] D83797: Remove thousands of std::string instances in a helper function that is frequently called.

[Nadav Rotem via Phabricator via llvm-commits]

nadav updated this revision to Diff 277912.

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D83797/new/

https://reviews.llvm.org/D83797

Files:
  llvm/lib/Transforms/Utils/InjectTLIMappings.cpp


Index: llvm/lib/Transforms/Utils/InjectTLIMappings.cpp
===================================================================
--- llvm/lib/Transforms/Utils/InjectTLIMappings.cpp
+++ llvm/lib/Transforms/Utils/InjectTLIMappings.cpp
@@ -77,11 +77,13 @@
   if (CI.isNoBuiltin() || !CI.getCalledFunction())
     return;
 
-  const std::string ScalarName = std::string(CI.getCalledFunction()->getName());
+  auto ScalarName = CI.getCalledFunction()->getName();
+
   // Nothing to be done if the TLI thinks the function is not
   // vectorizable.
   if (!TLI.isFunctionVectorizable(ScalarName))
     return;
+
   SmallVector<std::string, 8> Mappings;
   VFABI::getVectorVariantNames(CI, Mappings);
   Module *M = CI.getModule();


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