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llvm-mirror/test/Transforms/LoopSimplify/2003-04-25-AssertFail.ll
Eric Christopher a62270de2c Revert "Temporarily Revert "Add basic loop fusion pass.""
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
2019-04-17 04:52:47 +00:00

21 lines
599 B
LLVM

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