[PATCH] D154725: [AggressiveInstCombine] Fold strcmp for short string literals

Dávid Bolvanský via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Wed Jul 12 02:38:56 PDT 2023


xbolva00 added inline comments.


================
Comment at: llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp:920
+
+  bool Match = !HasStr1 && HasStr2 && Str2.size() == 1;
+  if (!Match)
----------------
GCC I think “inlines “ strcmp up to some  length, but not strictly 1, no?

Also it can inline (expand) strcmp calls if we know that src/dst are dereferenceable with known size. 


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D154725/new/

https://reviews.llvm.org/D154725



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