23 lines
531 B
LLVM
23 lines
531 B
LLVM
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; RUN: opt -S < %s -jump-threading -jump-threading-across-loop-headers | FileCheck %s
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; CHECK-LABEL: @foo
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; Just check that we don't hang on this test.
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define void @foo(i32 %a) {
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bb_entry:
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br label %bb_header
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bb_header:
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%b = phi i32 [ %c, %bb_header ], [ 0, %bb_body1 ], [ 2, %bb_body2 ], [ 0, %bb_entry ]
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%c = add nuw nsw i32 %b, 1
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%d = icmp ult i32 %c, 6
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br i1 %d, label %bb_header, label %bb_body1
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bb_body1:
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%e = icmp eq i32 %a, 0
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br i1 %e, label %bb_body2, label %bb_header
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bb_body2:
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br label %bb_header
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}
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