new testcase for PR964

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31117 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/Generic/SwitchLowering.ll b/test/CodeGen/Generic/SwitchLowering.ll
new file mode 100644 (file)
index 0000000..136bdb4
--- /dev/null
+++ b/test/CodeGen/Generic/SwitchLowering.ll
@@ -0,0 +1,27 @@
+; RUN: llvm-as < %s | llc -march=x86 | grep cmp | wc -l | grep 1
+; PR964
+
+sbyte* %FindChar(sbyte* %CurPtr) {
+entry:
+       br label %bb
+
+bb:            ; preds = %bb, %entry
+       %indvar = phi uint [ 0, %entry ], [ %indvar.next, %bb ]         ; <uint> [#uses=3]
+       %CurPtr_addr.0.rec = cast uint %indvar to int           ; <int> [#uses=1]
+       %CurPtr_addr.0 = getelementptr sbyte* %CurPtr, uint %indvar             ; <sbyte*> [#uses=1]
+       %tmp = load sbyte* %CurPtr_addr.0               ; <sbyte> [#uses=2]
+       %tmp2.rec = add int %CurPtr_addr.0.rec, 1               ; <int> [#uses=1]
+       %tmp2 = getelementptr sbyte* %CurPtr, int %tmp2.rec             ; <sbyte*> [#uses=1]
+       %indvar.next = add uint %indvar, 1              ; <uint> [#uses=1]
+       switch sbyte %tmp, label %bb [
+                sbyte 0, label %bb7
+                sbyte 120, label %bb7
+       ]
+
+bb7:           ; preds = %bb, %bb
+       %tmp = cast sbyte %tmp to ubyte         ; <ubyte> [#uses=1]
+       tail call void %foo( ubyte %tmp )
+       ret sbyte* %tmp2
+}
+
+declare void %foo(ubyte)