[PATCH] D102404: [InstCombine] Add instcombine fold for extractelement + splat for scalable vectors

[Sander de Smalen via Phabricator via llvm-commits]

sdesmalen added a comment.

Seems you just rebased, so it still looks fine to me.



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Comment at: llvm/test/Transforms/InstCombine/gep-vector-indices.ll:64
 ; CHECK-LABEL: @vector_splat_ptrs_nxv2i64_ext0(
-; CHECK-NEXT:    [[TMP:%.*]] = insertelement <vscale x 2 x i32*> poison, i32* [[A:%.*]], i32 0
-; CHECK-NEXT:    [[SPLATOFA:%.*]] = shufflevector <vscale x 2 x i32*> [[TMP]], <vscale x 2 x i32*> poison, <vscale x 2 x i32> zeroinitializer
-; CHECK-NEXT:    [[TMP0:%.*]] = extractelement <vscale x 2 x i32*> [[SPLATOFA]], i32 0
-; CHECK-NEXT:    [[RES:%.*]] = getelementptr i32, i32* [[TMP0]], i64 [[INDEX:%.*]]
+; CHECK-NEXT:    [[RES:%.*]] = getelementptr i32, i32* [[A:%.*]], i64 [[INDEX:%.*]]
 ; CHECK-NEXT:    ret i32* [[RES]]
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Nice improvement.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D102404/new/

https://reviews.llvm.org/D102404