[Test][SLPVectorizer] Precommit test for PR52275

diff --git a/llvm/test/Transforms/SLPVectorizer/X86/pr52275.ll b/llvm/test/Transforms/SLPVectorizer/X86/pr52275.ll
new file mode 100644 (file)
index 0000000..6794553
--- /dev/null
+++ b/llvm/test/Transforms/SLPVectorizer/X86/pr52275.ll
@@ -0,0 +1,21 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -slp-vectorizer -S -mtriple=x86_64-- | FileCheck %s
+
+define  <4 x i8> @pr52275(<4 x i8> %v, i8* %x) {
+; CHECK-LABEL: @pr52275(
+; CHECK-NEXT:    [[G1:%.*]] = getelementptr inbounds i8, i8* [[X:%.*]], i64 1
+; CHECK-NEXT:    [[TMP1:%.*]] = bitcast i8* [[X]] to <2 x i8>*
+; CHECK-NEXT:    [[TMP2:%.*]] = load <2 x i8>, <2 x i8>* [[TMP1]], align 4
+; CHECK-NEXT:    [[TMP3:%.*]] = shufflevector <2 x i8> [[TMP2]], <2 x i8> poison, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
+; CHECK-NEXT:    [[V11:%.*]] = shufflevector <4 x i8> [[V:%.*]], <4 x i8> [[TMP3]], <4 x i32> <i32 4, i32 5, i32 2, i32 3>
+; CHECK-NEXT:    [[V2:%.*]] = add <4 x i8> [[V11]], [[V11]]
+; CHECK-NEXT:    ret <4 x i8> [[V2]]
+;
+  %x0 = load i8, i8* %x, align 4
+  %g1 = getelementptr inbounds i8, i8* %x, i64 1
+  %x1 = load i8, i8* %g1, align 4
+  %v0 = insertelement <4 x i8> %v, i8 %x0, i64 0
+  %v1 = insertelement <4 x i8> %v0, i8 %x1, i64 1
+  %v2 = add <4 x i8> %v0, %v1
+  ret <4 x i8> %v2
+}