AMDGPU: Use unsigned compare for eq/ne

For some reason there are both of these available, except
for scalar 64-bit compares which only has u64. I'm not sure
why there are both (I'm guessing it's for the one bit inputs we
don't use), but for consistency always using the
unsigned one.

llvm-svn: 282832
diff --git a/llvm/test/CodeGen/AMDGPU/32-bit-local-address-space.ll b/llvm/test/CodeGen/AMDGPU/32-bit-local-address-space.ll
index ff8c904..6495a14 100644
--- a/llvm/test/CodeGen/AMDGPU/32-bit-local-address-space.ll
+++ b/llvm/test/CodeGen/AMDGPU/32-bit-local-address-space.ll
@@ -57,8 +57,8 @@
 }
 
 ; FUNC-LABEL: {{^}}null_32bit_lds_ptr:
-; SI: v_cmp_ne_i32
-; SI-NOT: v_cmp_ne_i32
+; SI: v_cmp_ne_u32
+; SI-NOT: v_cmp_ne_u32
 ; SI: v_cndmask_b32
 define void @null_32bit_lds_ptr(i32 addrspace(1)* %out, i32 addrspace(3)* %lds) nounwind {
   %cmp = icmp ne i32 addrspace(3)* %lds, null