1 ; RUN: opt -S -loop-vectorize -dce -instcombine -force-vector-width=2 -force-vector-unroll=2 < %s | FileCheck %s 2 3 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" 4 5 ;PR 15830. 6 7 ;CHECK-LABEL: @foo( 8 ; When scalarizing stores we need to preserve the original order. 9 ; Make sure that we are extracting in the correct order (0101, and not 0011). 10 ;CHECK: extractelement <2 x i64> {{.*}}, i32 0 11 ;CHECK: extractelement <2 x i64> {{.*}}, i32 1 12 ;CHECK: extractelement <2 x i64> {{.*}}, i32 0 13 ;CHECK: extractelement <2 x i64> {{.*}}, i32 1 14 ;CHECK: store 15 ;CHECK: store 16 ;CHECK: store 17 ;CHECK: store 18 ;CHECK: ret 19 20 define i32 @foo(i32* nocapture %A) { 21 entry: 22 br label %for.body 23 24 for.body: 25 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 26 %0 = shl nsw i64 %indvars.iv, 2 27 %arrayidx = getelementptr inbounds i32* %A, i64 %0 28 store i32 4, i32* %arrayidx, align 4 29 %indvars.iv.next = add i64 %indvars.iv, 1 30 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 31 %exitcond = icmp eq i32 %lftr.wideiv, 10000 32 br i1 %exitcond, label %for.end, label %for.body 33 34 for.end: 35 ret i32 undef 36 } 37 38 39
