1 files changed, 29 insertions, 0 deletions
diff --git a/test/CodeGen/Generic/fwdtwice.ll b/test/CodeGen/Generic/fwdtwice.ll
new file mode 100644
index 0000000..6b38f04
--- /dev/null
+++ b/test/CodeGen/Generic/fwdtwice.ll
@@ -0,0 +1,29 @@
+; RUN: llc < %s
+
+;;
+;; Test the sequence:
+;;	cast -> setle 0, %cast -> br %cond
+;; This sequence should cause the cast value to be forwarded twice,
+;; i.e., cast is forwarded to the setle and the setle is forwarded
+;; to the branch.
+;; register argument of the "branch-on-register" instruction, i.e.,
+;; 
+;; This produces the bogus output instruction:
+;;	brlez   <NULL VALUE>, .L_SumArray_bb3.
+;; This came from %bb1 of sumarrray.ll generated from sumarray.c.
+
+define i32 @SumArray(i32 %Num) {
+        %Num.upgrd.1 = alloca i32               ; <i32*> [#uses=2]
+        br label %Top
+
+Top:            ; preds = %Top, %0
+        store i32 %Num, i32* %Num.upgrd.1
+        %reg108 = load i32* %Num.upgrd.1                ; <i32> [#uses=1]
+        %cast1006 = bitcast i32 %reg108 to i32          ; <i32> [#uses=1]
+        %cond1001 = icmp ule i32 %cast1006, 0           ; <i1> [#uses=1]
+        br i1 %cond1001, label %bb6, label %Top
+
+bb6:            ; preds = %Top
+        ret i32 42
+}
+