1 ; RUN: opt < %s -loop-vectorize -force-vector-width=4 -S | FileCheck %s 2 3 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 4 target triple = "x86_64-apple-macosx10.9.0" 5 6 ; CHECK-LABEL: @lshr_exact( 7 ; CHECK: lshr exact <4 x i32> 8 define void @lshr_exact(i32* %x) { 9 entry: 10 br label %for.body 11 12 for.body: 13 %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ] 14 %arrayidx = getelementptr inbounds i32, i32* %x, i64 %iv 15 %0 = load i32, i32* %arrayidx, align 4 16 %conv1 = lshr exact i32 %0, 1 17 store i32 %conv1, i32* %arrayidx, align 4 18 %iv.next = add nuw nsw i64 %iv, 1 19 %exitcond = icmp eq i64 %iv.next, 256 20 br i1 %exitcond, label %for.end, label %for.body 21 22 for.end: 23 ret void 24 } 25
