37 lines
983 B
LLVM
37 lines
983 B
LLVM
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; RUN: opt < %s -S -loop-vectorize -force-vector-width=4 -force-vector-interleave=1 | FileCheck %s
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; Check that we can vectorize this loop without crashing.
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; CHECK-LABEL: define {{.*}} @widget(
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; CHECK: [[vecInd:%.*]] = phi <4 x i8> [ <i8 0, i8 1, i8 2, i8 3>
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; CHECK-NEXT: add <4 x i8> [[vecInd]], <i8 1, i8 1, i8 1, i8 1>
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define i8 @widget(i8* %arr, i8 %t9) {
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bb:
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br label %bb6
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bb6:
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%t1.0 = phi i8* [ %arr, %bb ], [ null, %bb6 ]
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%c = call i1 @cond()
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br i1 %c, label %for.preheader, label %bb6
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for.preheader:
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br label %for.body
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for.body:
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%iv = phi i8 [ %iv.next, %for.body ], [ 0, %for.preheader ]
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%iv.next = add i8 %iv, 1
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%ptr = getelementptr inbounds i8, i8* %arr, i8 %iv.next
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%t3.i = icmp slt i8 %iv.next, %t9
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%t3.i8 = zext i1 %t3.i to i8
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store i8 %t3.i8, i8* %ptr
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%ec = icmp eq i8* %t1.0, %ptr
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br i1 %ec, label %for.exit, label %for.body
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for.exit:
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%iv.next.lcssa = phi i8 [ %iv.next, %for.body ]
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ret i8 %iv.next.lcssa
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}
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declare i1 @cond()
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