[PATCH] D141214: [InstCombine] Don't combine smul of i1 type constant one
    Craig Topper via Phabricator via llvm-commits 
    llvm-commits at lists.llvm.org
       
    Sat Jan  7 23:32:49 PST 2023
    
    
  
craig.topper added inline comments.
================
Comment at: llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp:4999
     case Instruction::Mul:
-      return match(RHS, m_One());
+      return !(RHS->getType()->isIntegerTy(1) && IsSigned) &&
+             match(RHS, m_One());
----------------
What about i1 vectors?
Repository:
  rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D141214/new/
https://reviews.llvm.org/D141214
    
    
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