forked from OSchip/llvm-project
40 lines
618 B
LLVM
40 lines
618 B
LLVM
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; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s
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; ScalarEvolution shouldn't attempt to interpret expressions which have
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; undefined results.
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define void @foo(i64 %x) {
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%a = udiv i64 %x, 0
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; CHECK: --> (%x /u 0)
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%B = shl i64 %x, 64
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; CHECK: --> %B
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%b = ashr i64 %B, 64
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; CHECK: --> %b
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%c = lshr i64 %x, 64
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; CHECK: --> %c
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%d = shl i64 %x, 64
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; CHECK: --> %d
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%E = shl i64 %x, -1
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; CHECK: --> %E
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%e = ashr i64 %E, -1
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; CHECK: --> %e
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%f = lshr i64 %x, -1
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; CHECK: --> %f
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%g = shl i64 %x, -1
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; CHECK: --> %g
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%h = bitcast i64 undef to i64
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; CHECK: --> undef
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ret void
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}
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