forked from OSchip/llvm-project
25 lines
810 B
LLVM
25 lines
810 B
LLVM
; RUN: opt -loop-vectorize -force-vector-width=2 -force-vector-interleave=1 -S < %s | FileCheck %s
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@a = common global [128 x i32] zeroinitializer, align 16
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;; Must not vectorize division reduction. Division is lossy.
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define i32 @g() {
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entry:
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br label %for.body
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for.body:
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; CHECK-LABEL: @g(
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; CHECK-NOT: sdiv <2 x i32>
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%r.05 = phi i32 [ 80, %entry ], [ %div, %for.body ]
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%arrayidx = getelementptr inbounds [128 x i32]* @a, i64 0, i64 %indvars.iv
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%0 = load i32* %arrayidx, align 4
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%div = sdiv i32 %r.05, %0
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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, 1024
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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 %div
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}
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