new testcase for zap generation, from the alpha readme

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30865 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/Alpha/zapnot3.ll b/test/CodeGen/Alpha/zapnot3.ll
new file mode 100644 (file)
index 0000000..371044a
--- /dev/null
+++ b/test/CodeGen/Alpha/zapnot3.ll
@@ -0,0 +1,14 @@
+; RUN: llvm-as < %s | llc -march=alpha | grep zapnot | wc -l | grep 2
+
+ulong %foo(ulong %y) {
+        %tmp = and ulong %y,  65535
+        %tmp2 = shr ulong %tmp,  ubyte 3
+        ret ulong %tmp2
+}
+
+ulong %foo2(ulong %y) {
+        %tmp = shr ulong %y, ubyte 3            ; <ulong> [#uses=1]
+        %tmp2 = and ulong %tmp, 8191            ; <ulong> [#uses=1]
+        ret ulong %tmp2
+}
+