load (x|y) -> load (x+y) iff x and y have no common bits.

llvm-svn: 26449

1 files changed, 23 insertions, 0 deletions

diff --git a/llvm/test/Regression/CodeGen/PowerPC/or-addressing-mode.ll b/llvm/test/Regression/CodeGen/PowerPC/or-addressing-mode.ll
new file mode 100644
index 00000000000..0d4fd965e8e
--- /dev/null
+++ b/llvm/test/Regression/CodeGen/PowerPC/or-addressing-mode.ll
@@ -0,0 +1,23 @@
+; RUN: llvm-as < %s | llc &&
+; RUN: llvm-as < %s | llc | not grep ori && 
+; RUN: llvm-as < %s | llc | not grep rlwimi
+
+int %test1(sbyte* %P) {  ;; or -> lwzx
+        %tmp.2.i = cast sbyte* %P to uint
+        %tmp.4.i = and uint %tmp.2.i, 4294901760
+        %tmp.10.i = shr uint %tmp.2.i, ubyte 5
+        %tmp.11.i = and uint %tmp.10.i, 2040
+        %tmp.13.i = or uint %tmp.11.i, %tmp.4.i
+        %tmp.14.i = cast uint %tmp.13.i to int*
+        %tmp.3 = load int* %tmp.14.i
+        ret int %tmp.3
+}
+
+int %test2(int %P) {    ;; or -> lwz
+        %tmp.2 = shl int %P, ubyte 4
+        %tmp.3 = or int %tmp.2, 2
+        %tmp.4 = cast int %tmp.3 to int*
+        %tmp.5 = load int* %tmp.4
+        ret int %tmp.5
+}
+