New testcase that causes the code extractor to generate bogus code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12404 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/CodeExtractor/2004-03-14-DominanceProblem.ll b/test/Transforms/CodeExtractor/2004-03-14-DominanceProblem.ll
new file mode 100644 (file)
index 0000000..5dffe4b
--- /dev/null
+++ b/test/Transforms/CodeExtractor/2004-03-14-DominanceProblem.ll
@@ -0,0 +1,34 @@
+; RUN: llvm-as < %s | opt -loop-extract -disable-output
+; This testcase is failing the loop extractor because not all exit blocks 
+; are dominated by all of the live-outs.
+
+implementation   ; Functions:
+
+int %ab(int %alpha, int %beta) {
+entry:
+       br label %loopentry.1.preheader
+
+loopentry.1.preheader:         ; preds = %then.1
+       br label %loopentry.1
+
+loopentry.1:           ; preds = %loopentry.1.preheader, %no_exit.1
+       br bool false, label %no_exit.1, label %loopexit.0.loopexit1
+
+no_exit.1:             ; preds = %loopentry.1
+       %tmp.53 = load int* null                ; <int> [#uses=1]
+       br bool false, label %shortcirc_next.2, label %loopentry.1
+
+shortcirc_next.2:              ; preds = %no_exit.1
+       %tmp.563 = call int %wins( int 0, int %tmp.53, int 3 )          ; <int> [#uses=0]
+       ret int 0
+
+loopexit.0.loopexit1:          ; preds = %loopentry.1
+       br label %loopexit.0
+
+loopexit.0:            ; preds = %loopexit.0.loopexit, %loopexit.0.loopexit1
+       ret int 0
+}
+
+declare int %wins(int, int, int)
+
+declare ushort %ab_code()