testcase for pr1217

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34545 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 32 insertions, 0 deletions

diff --git a/test/Transforms/InstCombine/2007-02-23-PhiFoldInfLoop.ll b/test/Transforms/InstCombine/2007-02-23-PhiFoldInfLoop.ll
new file mode 100644
index 00000000000..da28f595a35
--- /dev/null
+++ b/test/Transforms/InstCombine/2007-02-23-PhiFoldInfLoop.ll
@@ -0,0 +1,32 @@
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep ret
+; PR1217
+
+target datalayout = "e-p:32:32"
+target triple = "i686-pc-linux-gnu"
+	%struct.termbox = type { %struct.termbox*, i32, i32, i32, i32, i32 }
+
+implementation   ; Functions:
+
+define void @ggenorien() {
+entry:
+	%tmp68 = icmp eq %struct.termbox* null, null		; <i1> [#uses=1]
+	br i1 %tmp68, label %cond_next448, label %bb80
+
+bb80:		; preds = %entry
+	ret void
+
+cond_next448:		; preds = %entry
+	br i1 false, label %bb756, label %bb595
+
+bb595:		; preds = %cond_next448
+	br label %bb609
+
+bb609:		; preds = %bb756, %bb595
+	%termnum.6240.0 = phi i32 [ 2, %bb595 ], [ %termnum.6, %bb756 ]		; <i32> [#uses=1]
+	%tmp755 = add i32 %termnum.6240.0, 1		; <i32> [#uses=1]
+	br label %bb756
+
+bb756:		; preds = %bb609, %cond_next448
+	%termnum.6 = phi i32 [ %tmp755, %bb609 ], [ 2, %cond_next448 ]		; <i32> [#uses=1]
+	br label %bb609
+}