1; RUN: opt -S -mtriple=x86_64-pc_linux -loop-vectorize -instcombine < %s | FileCheck %s --check-prefix=NORMAL 2; RUN: opt -S -mtriple=x86_64-pc_linux -loop-vectorize -instcombine -mcpu=slm < %s | FileCheck %s --check-prefix=NORMAL 3; RUN: opt -S -mtriple=x86_64-pc_linux -loop-vectorize -instcombine -mcpu=atom < %s | FileCheck %s --check-prefix=ATOM 4 5; NORMAL-LABEL: foo 6; NORMAL: %[[WIDE:.*]] = load <8 x i32>, <8 x i32>* %{{.*}}, align 4 7; NORMAL: %[[STRIDED1:.*]] = shufflevector <8 x i32> %[[WIDE]], <8 x i32> undef, <4 x i32> <i32 0, i32 2, i32 4, i32 6> 8; NORMAL: %[[STRIDED2:.*]] = shufflevector <8 x i32> %wide.vec, <8 x i32> undef, <4 x i32> <i32 1, i32 3, i32 5, i32 7> 9; NORMAL: add nsw <4 x i32> %[[STRIDED2]], %[[STRIDED1]] 10 11; ATOM-LABEL: foo 12; ATOM: load i32 13; ATOM: load i32 14; ATOM: store i32 15define void @foo(i32* noalias nocapture %a, i32* noalias nocapture readonly %b) { 16entry: 17 br label %for.body 18 19for.cond.cleanup: ; preds = %for.body 20 ret void 21 22for.body: ; preds = %for.body, %entry 23 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 24 %0 = shl nsw i64 %indvars.iv, 1 25 %arrayidx = getelementptr inbounds i32, i32* %b, i64 %0 26 %1 = load i32, i32* %arrayidx, align 4 27 %2 = or i64 %0, 1 28 %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %2 29 %3 = load i32, i32* %arrayidx3, align 4 30 %add4 = add nsw i32 %3, %1 31 %arrayidx6 = getelementptr inbounds i32, i32* %a, i64 %indvars.iv 32 store i32 %add4, i32* %arrayidx6, align 4 33 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 34 %exitcond = icmp eq i64 %indvars.iv.next, 1024 35 br i1 %exitcond, label %for.cond.cleanup, label %for.body 36} 37