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39 lines
1.2 KiB
LLVM
39 lines
1.2 KiB
LLVM
; RUN: opt -S -loop-vectorize -dce -instcombine -force-vector-width=2 -force-vector-unroll=2 < %s | FileCheck %s
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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"
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;PR 15830.
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;CHECK: foo
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; When scalarizing stores we need to preserve the original order.
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; Make sure that we are extracting in the correct order (0101, and not 0011).
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;CHECK: extractelement <2 x i64> {{.*}}, i32 0
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;CHECK: extractelement <2 x i64> {{.*}}, i32 1
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;CHECK: extractelement <2 x i64> {{.*}}, i32 0
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;CHECK: extractelement <2 x i64> {{.*}}, i32 1
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;CHECK: store
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;CHECK: store
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;CHECK: store
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;CHECK: store
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;CHECK: ret
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define i32 @foo(i32* nocapture %A) {
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entry:
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%0 = shl nsw i64 %indvars.iv, 2
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%arrayidx = getelementptr inbounds i32* %A, i64 %0
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store i32 4, i32* %arrayidx, align 4
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%indvars.iv.next = add i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, 10000
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret i32 undef
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}
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