; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt < %s -slp-vectorizer -instcombine -S | FileCheck %s ; Regression test for a bug in the SLP vectorizer that was causing ; these rotates to be incorrectly combined into a vector rotate. ; The bug fix is at https://reviews.llvm.org/D85759. This test has ; been pre-committed to demonstrate the regressed behavior and provide ; a clear diff for the bug fix. target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128" target triple = "wasm32-unknown-unknown" define void @foo(<2 x i64> %x, <4 x i32> %y, i64* %out) #0 { ; CHECK-LABEL: @foo( ; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <4 x i32> [[Y:%.*]], <4 x i32> undef, <2 x i32> ; CHECK-NEXT: [[TMP2:%.*]] = zext <2 x i32> [[TMP1]] to <2 x i64> ; CHECK-NEXT: [[TMP3:%.*]] = call <2 x i64> @llvm.fshl.v2i64(<2 x i64> [[X:%.*]], <2 x i64> [[X]], <2 x i64> [[TMP2]]) ; CHECK-NEXT: [[TMP4:%.*]] = bitcast i64* [[OUT:%.*]] to <2 x i64>* ; CHECK-NEXT: store <2 x i64> [[TMP3]], <2 x i64>* [[TMP4]], align 8 ; CHECK-NEXT: ret void ; %a = extractelement <2 x i64> %x, i32 0 %b = extractelement <4 x i32> %y, i32 2 %conv6 = zext i32 %b to i64 %c = tail call i64 @llvm.fshl.i64(i64 %a, i64 %a, i64 %conv6) store i64 %c, i64* %out %d = extractelement <2 x i64> %x, i32 1 %e = extractelement <4 x i32> %y, i32 3 %conv17 = zext i32 %e to i64 %f = tail call i64 @llvm.fshl.i64(i64 %d, i64 %d, i64 %conv17) %arrayidx2 = getelementptr inbounds i64, i64* %out, i32 1 store i64 %f, i64* %arrayidx2 ret void } declare i64 @llvm.fshl.i64(i64, i64, i64) attributes #0 = {"target-cpu"="generic" "target-features"="+simd128"}