test for improved zap discovery

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26147 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/Alpha/srl_and.ll b/test/CodeGen/Alpha/srl_and.ll
new file mode 100644 (file)
index 0000000..5d3c2b6
--- /dev/null
+++ b/test/CodeGen/Alpha/srl_and.ll
@@ -0,0 +1,10 @@
+; Make sure this testcase codegens to the zapnot instruction
+; RUN: llvm-as < %s | llc -march=alpha | grep 'zapnot'
+
+ulong %foo(ulong %y) {
+entry:
+        %tmp = shr ulong %y, ubyte 3            ; <ulong> [#uses=1]
+        %tmp2 = and ulong %tmp, 8191            ; <ulong> [#uses=1]
+        ret ulong %tmp2
+}
+