[flang-commits] [clang-tools-extra] [compiler-rt] [flang] [clang] [llvm] [VPlan] Replace VPRecipeOrVPValue with VP2VP recipe simplification. (PR #76090)

[Florian Hahn via flang-commits]

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@@ -806,6 +806,19 @@ static unsigned getOpcodeForRecipe(VPRecipeBase &R) {
 
 /// Try to simplify recipe \p R.
 static void simplifyRecipe(VPRecipeBase &R, VPTypeAnalysis &TypeInfo) {
+  // Try to remove redundant blend recipes.
+  if (auto *Blend = dyn_cast<VPBlendRecipe>(&R)) {
+    bool AllEqual = true;
+    for (unsigned I = 1; I != Blend->getNumIncomingValues(); ++I)
+      AllEqual &= Blend->getIncomingValue(0) == Blend->getIncomingValue(I);
+    if (AllEqual) {
+      Blend->replaceAllUsesWith(Blend->getIncomingValue(0));
+      Blend->eraseFromParent();
+      return;
+    }
+    return;
+  }
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fhahn wrote:

Simplified thanks!

https://github.com/llvm/llvm-project/pull/76090