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21 lines
608 B
LLVM
21 lines
608 B
LLVM
; This testcase exposed a problem with the loop identification pass (LoopInfo).
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; Basically, it was incorrectly calculating the loop nesting information.
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;
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; RUN: llvm-as < %s | opt -loopsimplify
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define i32 @yylex() {
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br label %loopentry.0
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loopentry.0: ; preds = %else.4, %0
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br label %loopexit.2
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loopexit.2: ; preds = %else.4, %loopexit.2, %loopentry.0
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br i1 false, label %loopexit.2, label %else.4
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yy_find_action: ; preds = %else.4
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br label %else.4
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else.4: ; preds = %yy_find_action, %loopexit.2
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switch i32 0, label %loopexit.2 [
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i32 2, label %yy_find_action
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i32 0, label %loopentry.0
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]
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}
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