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/cf-loop-on-constant.ll b/llvm/test/CodeGen/AMDGPU/cf-loop-on-constant.ll
index 759c48b..a68310c 100644
--- a/llvm/test/CodeGen/AMDGPU/cf-loop-on-constant.ll
+++ b/llvm/test/CodeGen/AMDGPU/cf-loop-on-constant.ll
@@ -95,7 +95,7 @@
 
 ; GCN-LABEL: {{^}}loop_arg_0:
 ; GCN: v_and_b32_e32 v{{[0-9]+}}, 1, v{{[0-9]+}}
-; GCN: v_cmp_eq_i32_e32 vcc, 1,
+; GCN: v_cmp_eq_u32_e32 vcc, 1,
 
 ; GCN: s_and_b64 s{{\[[0-9]+:[0-9]+\]}}, exec, vcc
 ; GCN: [[LOOPBB:BB[0-9]+_[0-9]+]]