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6f729d601c
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48762 91177308-0d34-0410-b5e6-96231b3b80d8
43 lines
1.4 KiB
LLVM
43 lines
1.4 KiB
LLVM
; This (complex) testcase causes an assertion failure because a preheader is
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; inserted for the "fail" loop, but the exit block of a loop is not updated
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; to be the preheader instead of the exit loop itself.
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; RUN: llvm-as < %s | opt -loopsimplify
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define i32 @re_match_2() {
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br label %loopentry.1
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loopentry.1: ; preds = %endif.82, %0
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br label %shortcirc_done.36
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shortcirc_done.36: ; preds = %loopentry.1
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br i1 false, label %fail, label %endif.40
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endif.40: ; preds = %shortcirc_done.36
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br label %loopexit.20
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loopentry.20: ; preds = %endif.46
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br label %loopexit.20
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loopexit.20: ; preds = %loopentry.20, %endif.40
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br label %loopentry.21
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loopentry.21: ; preds = %no_exit.19, %loopexit.20
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br i1 false, label %no_exit.19, label %loopexit.21
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no_exit.19: ; preds = %loopentry.21
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br i1 false, label %fail, label %loopentry.21
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loopexit.21: ; preds = %loopentry.21
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br label %endif.45
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endif.45: ; preds = %loopexit.21
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br label %cond_true.15
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cond_true.15: ; preds = %endif.45
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br i1 false, label %fail, label %endif.46
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endif.46: ; preds = %cond_true.15
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br label %loopentry.20
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fail: ; preds = %loopexit.37, %cond_true.15, %no_exit.19, %shortcirc_done.36
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br label %then.80
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then.80: ; preds = %fail
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br label %endif.81
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endif.81: ; preds = %then.80
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br label %loopexit.37
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loopexit.37: ; preds = %endif.81
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br i1 false, label %fail, label %endif.82
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endif.82: ; preds = %loopexit.37
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br label %loopentry.1
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}
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