AMDGPU/SI: Enable load-store-opt by default.

Summary: Enable load-store-opt by default, and update LIT tests.

Reviewers: arsenm

Differential Revision: http://reviews.llvm.org/D20694

llvm-svn: 270894
diff --git a/llvm/test/CodeGen/AMDGPU/llvm.memcpy.ll b/llvm/test/CodeGen/AMDGPU/llvm.memcpy.ll
index 2bd9e16..8398309 100644
--- a/llvm/test/CodeGen/AMDGPU/llvm.memcpy.ll
+++ b/llvm/test/CodeGen/AMDGPU/llvm.memcpy.ll
@@ -153,15 +153,11 @@
 ; FIXME: Use 64-bit ops
 ; FUNC-LABEL: {{^}}test_small_memcpy_i64_lds_to_lds_align8:
 
-; SI: ds_read_b64
-; SI: ds_read_b64
-; SI: ds_read_b64
-; SI: ds_read_b64
+; SI: ds_read2_b64
+; SI: ds_read2_b64
 
-; SI: ds_write_b64
-; SI: ds_write_b64
-; SI: ds_write_b64
-; SI: ds_write_b64
+; SI: ds_write2_b64
+; SI: ds_write2_b64
 
 ; SI-DAG: s_endpgm
 define void @test_small_memcpy_i64_lds_to_lds_align8(i64 addrspace(3)* noalias %out, i64 addrspace(3)* noalias %in) nounwind {