[llvm-branch-commits] [llvm] [InstCombine][AMDGPU] Fold select of intrinsics differing in one operand (PR #227737)

Nikita Popov via llvm-branch-commits llvm-branch-commits at lists.llvm.org
Wed Oct 14 02:08:29 PDT 2026


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@@ -544,6 +586,9 @@ Instruction *InstCombinerImpl::foldSelectIntrinsic(SelectInst &SI) {
     return replaceInstUsesWith(SI, NewCall);
   }
   default:
+    if (isTriviallyVectorizable(IID))
+      return foldSelectIntoIntrinsicArg(SI, LHSIntrinsic, RHSIntrinsic,
+                                        Builder);
----------------
nikic wrote:

Should subsume the ctpop case above?

https://github.com/llvm/llvm-project/pull/227737


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