It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/Generic/SwitchLowering.ll b/test/CodeGen/Generic/SwitchLowering.ll
new file mode 100644
index 0000000..37bfffa
--- /dev/null
+++ b/test/CodeGen/Generic/SwitchLowering.ll
@@ -0,0 +1,27 @@
+; RUN: llvm-upgrade < %s | llvm-as | 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)