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29 lines
657 B
29 lines
657 B
4 months ago
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; RUN: opt < %s -reassociate -S
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; PR28367
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; Check to make sure this test does not assert or segfault. If we get too
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; aggressive with retrying instructions it's possible to invalidate our
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; iterator. See PR28367 for complete details.
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define void @fn1(i32 %a, i1 %c, i32* %ptr) {
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entry:
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br label %for.cond
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for.cond:
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%d.0 = phi i32 [ 1, %entry ], [ 2, %for.body ]
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br i1 %c, label %for.end, label %for.body
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for.body:
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%sub1 = sub i32 %a, %d.0
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%dead1 = add i32 %sub1, 1
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%dead2 = mul i32 %dead1, 3
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%dead3 = mul i32 %dead2, %sub1
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%sub2 = sub nsw i32 0, %d.0
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store i32 %sub2, i32* %ptr, align 4
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br label %for.cond
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for.end:
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ret void
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}
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