AMDGPU: Select DS insts without m0 initialization

GFX9 stopped using m0 for most DS instructions. Select
a different instruction without the use. I think this will
be less error prone than trying to manually maintain m0
uses as needed.

llvm-svn: 319270
diff --git a/llvm/test/CodeGen/AMDGPU/hsa-metadata-kernel-debug-props.ll b/llvm/test/CodeGen/AMDGPU/hsa-metadata-kernel-debug-props.ll
index 8583c00..80d033d 100644
--- a/llvm/test/CodeGen/AMDGPU/hsa-metadata-kernel-debug-props.ll
+++ b/llvm/test/CodeGen/AMDGPU/hsa-metadata-kernel-debug-props.ll
@@ -16,7 +16,7 @@
 ; CHECK:        ReservedNumVGPRs:                  4
 ; GFX700:       ReservedFirstVGPR:                 8
 ; GFX800:       ReservedFirstVGPR:                 8
-; GFX900:       ReservedFirstVGPR:                 11
+; GFX900:       ReservedFirstVGPR:                 10
 ; CHECK:        PrivateSegmentBufferSGPR:          0
 ; CHECK:        WavefrontPrivateSegmentOffsetSGPR: 11
 define amdgpu_kernel void @test(i32 addrspace(1)* %A) #0 !dbg !7 !kernel_arg_addr_space !12 !kernel_arg_access_qual !13 !kernel_arg_type !14 !kernel_arg_base_type !14 !kernel_arg_type_qual !15 {