Add a couple rlwinm tests for bitfield clears

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22624 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/PowerPC/rlwinm.ll b/test/CodeGen/PowerPC/rlwinm.ll
new file mode 100644 (file)
index 0000000..54cf82e
--- /dev/null
+++ b/test/CodeGen/PowerPC/rlwinm.ll
@@ -0,0 +1,17 @@
+; All of these ands and shifts should be folded into rlwimi's
+; RUN: llvm-as < rlwinm.ll | llc -march=ppc32 | not grep and && 
+; RUN: llvm-as < rlwinm.ll | llc -march=ppc32 | grep rlwinm | wc -l | grep 2
+
+implementation   ; Functions:
+
+int %test1(int %a) {
+entry:
+        %tmp.1 = and int %a, 268431360          ; <int> [#uses=1]
+        ret int %tmp.1
+}
+
+int %test2(int %a) {
+entry:
+        %tmp.1 = and int %a, -268435441         ; <int> [#uses=1]
+        ret int %tmp.1
+}