[llvm] cd160a6 - [VPlan] Do not add call results with void type to State (NFC).

[Florian Hahn via llvm-commits]

Author: Florian Hahn
Date: 2024-02-21T20:36:17Z
New Revision: cd160a6e98533fbc04a76d1b969db77b49668eb3

URL: https://github.com/llvm/llvm-project/commit/cd160a6e98533fbc04a76d1b969db77b49668eb3
DIFF: https://github.com/llvm/llvm-project/commit/cd160a6e98533fbc04a76d1b969db77b49668eb3.diff

LOG: [VPlan] Do not add call results with void type to State (NFC).

With vector libraries, we may vectorize calls with void return types. Do
not add those values to the state; they can never be accessed.

Added: 
    

Modified: 
    llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp b/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
index 9ee0cb2bd61530..2d2f6acf913f10 100644
--- a/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
+++ b/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
@@ -655,7 +655,8 @@ void VPWidenCallRecipe::execute(VPTransformState &State) {
     if (isa<FPMathOperator>(V))
       V->copyFastMathFlags(&CI);
 
-    State.set(this, V, Part);
+    if (!V->getType()->isVoidTy())
+      State.set(this, V, Part);
     State.addMetadata(V, &CI);
   }
 }