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30 lines
687 B
30 lines
687 B
4 months ago
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; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s
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; This loop has no preheader, multiple backedges, etc., but ScalarEvolution
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; should still be able to analyze it.
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; CHECK: %i = phi i64 [ 5, %entry ], [ 5, %alt ], [ %i.next, %loop.a ], [ %i.next, %loop.b ]
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; CHECK-NEXT: --> {5,+,1}<%loop>
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define void @foo(i1 %p, i1 %q, i1 %s, i1 %u) {
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entry:
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br i1 %p, label %loop, label %alt
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alt:
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br i1 %s, label %loop, label %exit
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loop:
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%i = phi i64 [ 5, %entry ], [ 5, %alt ], [ %i.next, %loop.a ], [ %i.next, %loop.b ]
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%i.next = add i64 %i, 1
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br i1 %q, label %loop.a, label %loop.b
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loop.a:
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br label %loop
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loop.b:
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br i1 %u, label %loop, label %exit
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exit:
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ret void
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}
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