R600/SI: Remove some redudant load testcases.

This reduces coverage for Evergreen, since the more
complete tests have those run lines disabled.

llvm-svn: 225927
diff --git a/llvm/test/CodeGen/R600/global-extload-i16.ll b/llvm/test/CodeGen/R600/global-extload-i16.ll
index 6c55955..8380684 100644
--- a/llvm/test/CodeGen/R600/global-extload-i16.ll
+++ b/llvm/test/CodeGen/R600/global-extload-i16.ll
@@ -153,9 +153,9 @@
 }
 
 ; FUNC-LABEL: {{^}}zextload_global_i16_to_i64:
-; SI: buffer_load_ushort [[LOAD:v[0-9]+]],
-; SI: v_mov_b32_e32 {{v[0-9]+}}, 0{{$}}
-; SI: buffer_store_dwordx2
+; SI: buffer_load_ushort v[[LO:[0-9]+]],
+; SI: v_mov_b32_e32 v[[HI:[0-9]+]], 0{{$}}
+; SI: buffer_store_dwordx2 v{{\[}}[[LO]]:[[HI]]]
 define void @zextload_global_i16_to_i64(i64 addrspace(1)* %out, i16 addrspace(1)* %in) nounwind {
   %a = load i16 addrspace(1)* %in
   %ext = zext i16 %a to i64