llvm/test/Transforms/LoopSimplify/2003-05-12-PreheaderExitOfChild.ll
Dan Gohman f2f6ce65b7 Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-11 18:01:28 +00:00

43 lines
1.4 KiB
LLVM

; This (complex) testcase causes an assertion failure because a preheader is
; inserted for the "fail" loop, but the exit block of a loop is not updated
; to be the preheader instead of the exit loop itself.
; RUN: opt < %s -loopsimplify
define i32 @re_match_2() {
br label %loopentry.1
loopentry.1: ; preds = %endif.82, %0
br label %shortcirc_done.36
shortcirc_done.36: ; preds = %loopentry.1
br i1 false, label %fail, label %endif.40
endif.40: ; preds = %shortcirc_done.36
br label %loopexit.20
loopentry.20: ; preds = %endif.46
br label %loopexit.20
loopexit.20: ; preds = %loopentry.20, %endif.40
br label %loopentry.21
loopentry.21: ; preds = %no_exit.19, %loopexit.20
br i1 false, label %no_exit.19, label %loopexit.21
no_exit.19: ; preds = %loopentry.21
br i1 false, label %fail, label %loopentry.21
loopexit.21: ; preds = %loopentry.21
br label %endif.45
endif.45: ; preds = %loopexit.21
br label %cond_true.15
cond_true.15: ; preds = %endif.45
br i1 false, label %fail, label %endif.46
endif.46: ; preds = %cond_true.15
br label %loopentry.20
fail: ; preds = %loopexit.37, %cond_true.15, %no_exit.19, %shortcirc_done.36
br label %then.80
then.80: ; preds = %fail
br label %endif.81
endif.81: ; preds = %then.80
br label %loopexit.37
loopexit.37: ; preds = %endif.81
br i1 false, label %fail, label %endif.82
endif.82: ; preds = %loopexit.37
br label %loopentry.1
}