R600/SI: Add patterns for 64-bit shift operations

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
llvm-svn: 182284
diff --git a/llvm/test/CodeGen/R600/shl.ll b/llvm/test/CodeGen/R600/shl.ll
index 43cc1e2..db970e9 100644
--- a/llvm/test/CodeGen/R600/shl.ll
+++ b/llvm/test/CodeGen/R600/shl.ll
@@ -11,3 +11,6 @@
   store <4 x i32> %result, <4 x i32> addrspace(1)* %out
   ret void
 }
+
+; XXX: Add SI test for i64 shl once i64 stores and i64 function arguments are
+; supported.