Add a testcase for nate's patch

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23172 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/PowerPC/small-arguments.ll b/test/CodeGen/PowerPC/small-arguments.ll
new file mode 100644 (file)
index 0000000..9195d0f
--- /dev/null
+++ b/test/CodeGen/PowerPC/small-arguments.ll
@@ -0,0 +1,12 @@
+; RUN: llvm-as < %s | llc -march=ppc32 | not grep 'extsh\|rlwinm r3, r3'
+
+int %test1(short %X) {
+       %Y = cast short %X to int  ;; dead
+       ret int %Y
+}
+
+int %test2(ushort %X) {
+       %Y = cast ushort %X to int
+       %Z = and int %Y, 65535      ;; dead
+       ret int %Z
+}