1 files changed, 49 insertions, 0 deletions
diff --git a/test/Transforms/TailDup/if-tail-dup.ll b/test/Transforms/TailDup/if-tail-dup.ll
new file mode 100644
index 000000000000..7c4d9c25ef3e
--- /dev/null
+++ b/test/Transforms/TailDup/if-tail-dup.ll
@@ -0,0 +1,49 @@
+; RUN: llvm-as < %s | opt -tailduplicate | \
+; RUN:   llc -march=x86 -o %t -f
+; RUN: grep {\\\<je\\\>} %t
+; RUN: not grep jmp %t
+; END.
+; This should have no unconditional jumps in it.  The C source is:
+
+;void foo(int c, int* P) {
+;  if (c & 1)  P[0] = 1;
+;  if (c & 2)  P[1] = 1;
+;  if (c & 4)  P[2] = 1;
+;  if (c & 8)  P[3] = 1;
+;}
+
+define void @foo(i32 %c, i32* %P) {
+entry:
+	%tmp1 = and i32 %c, 1		; <i32> [#uses=1]
+	%tmp1.upgrd.1 = icmp eq i32 %tmp1, 0		; <i1> [#uses=1]
+	br i1 %tmp1.upgrd.1, label %cond_next, label %cond_true
+cond_true:		; preds = %entry
+	store i32 1, i32* %P
+	br label %cond_next
+cond_next:		; preds = %cond_true, %entry
+	%tmp5 = and i32 %c, 2		; <i32> [#uses=1]
+	%tmp5.upgrd.2 = icmp eq i32 %tmp5, 0		; <i1> [#uses=1]
+	br i1 %tmp5.upgrd.2, label %cond_next10, label %cond_true6
+cond_true6:		; preds = %cond_next
+	%tmp8 = getelementptr i32* %P, i32 1		; <i32*> [#uses=1]
+	store i32 1, i32* %tmp8
+	br label %cond_next10
+cond_next10:		; preds = %cond_true6, %cond_next
+	%tmp13 = and i32 %c, 4		; <i32> [#uses=1]
+	%tmp13.upgrd.3 = icmp eq i32 %tmp13, 0		; <i1> [#uses=1]
+	br i1 %tmp13.upgrd.3, label %cond_next18, label %cond_true14
+cond_true14:		; preds = %cond_next10
+	%tmp16 = getelementptr i32* %P, i32 2		; <i32*> [#uses=1]
+	store i32 1, i32* %tmp16
+	br label %cond_next18
+cond_next18:		; preds = %cond_true14, %cond_next10
+	%tmp21 = and i32 %c, 8		; <i32> [#uses=1]
+	%tmp21.upgrd.4 = icmp eq i32 %tmp21, 0		; <i1> [#uses=1]
+	br i1 %tmp21.upgrd.4, label %return, label %cond_true22
+cond_true22:		; preds = %cond_next18
+	%tmp24 = getelementptr i32* %P, i32 3		; <i32*> [#uses=1]
+	store i32 1, i32* %tmp24
+	ret void
+return:		; preds = %cond_next18
+	ret void
+}