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| -rw-r--r-- | llvm/test/Transforms/DeadStoreElimination/X86/gather-null-pointer.ll | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/llvm/test/Transforms/DeadStoreElimination/X86/gather-null-pointer.ll b/llvm/test/Transforms/DeadStoreElimination/X86/gather-null-pointer.ll new file mode 100644 index 00000000000..bd187c06bdb --- /dev/null +++ b/llvm/test/Transforms/DeadStoreElimination/X86/gather-null-pointer.ll @@ -0,0 +1,20 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt < %s -dse -S | FileCheck %s + +; Both stores should be emitted because we can't tell if the gather aliases. + +define <4 x i32> @bar(<4 x i32> %arg, i32* %arg1) { +; CHECK-LABEL: @bar( +; CHECK-NEXT: bb: +; CHECK-NEXT: [[TMP:%.*]] = tail call <4 x i32> @llvm.x86.avx2.gather.d.d(<4 x i32> zeroinitializer, i8* null, <4 x i32> [[ARG:%.*]], <4 x i32> <i32 -1, i32 -1, i32 -1, i32 -1>, i8 1) +; CHECK-NEXT: store i32 10, i32* [[ARG1:%.*]] +; CHECK-NEXT: ret <4 x i32> [[TMP]] +; +bb: + store i32 5, i32* %arg1 + %tmp = tail call <4 x i32> @llvm.x86.avx2.gather.d.d(<4 x i32> zeroinitializer, i8* null, <4 x i32> %arg, <4 x i32> <i32 -1, i32 -1, i32 -1, i32 -1>, i8 1) + store i32 10, i32* %arg1 + ret <4 x i32> %tmp +} + +declare <4 x i32> @llvm.x86.avx2.gather.d.d(<4 x i32>, i8*, <4 x i32>, <4 x i32>, i8) |
