vendor/llvm/llvm-r72732

1 files changed, 28 insertions, 0 deletions

diff --git a/test/CodeGen/Generic/SwitchLowering.ll b/test/CodeGen/Generic/SwitchLowering.ll
new file mode 100644
index 0000000000000..9fdfd8d5f63e9
--- /dev/null
+++ b/test/CodeGen/Generic/SwitchLowering.ll
@@ -0,0 +1,28 @@
+; RUN: llvm-as < %s | llc -march=x86 | grep cmp | count 1
+; PR964
+
+define i8* @FindChar(i8* %CurPtr) {
+entry:
+        br label %bb
+
+bb:             ; preds = %bb, %entry
+        %indvar = phi i32 [ 0, %entry ], [ %indvar.next, %bb ]          ; <i32> [#uses=3]
+        %CurPtr_addr.0.rec = bitcast i32 %indvar to i32         ; <i32> [#uses=1]
+        %gep.upgrd.1 = zext i32 %indvar to i64          ; <i64> [#uses=1]
+        %CurPtr_addr.0 = getelementptr i8* %CurPtr, i64 %gep.upgrd.1            ; <i8*> [#uses=1]
+        %tmp = load i8* %CurPtr_addr.0          ; <i8> [#uses=3]
+        %tmp2.rec = add i32 %CurPtr_addr.0.rec, 1               ; <i32> [#uses=1]
+        %tmp2 = getelementptr i8* %CurPtr, i32 %tmp2.rec                ; <i8*> [#uses=1]
+        %indvar.next = add i32 %indvar, 1               ; <i32> [#uses=1]
+        switch i8 %tmp, label %bb [
+                 i8 0, label %bb7
+                 i8 120, label %bb7
+        ]
+
+bb7:            ; preds = %bb, %bb
+        tail call void @foo( i8 %tmp )
+        ret i8* %tmp2
+}
+
+declare void @foo(i8)
+