[llvm] [Codegen] Remove redundant pseudo mov instruction (PR #139716)

[Matt Arsenault via llvm-commits]

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@@ -72,8 +72,7 @@ done:
 ; GCN-LABEL: {{^}}test_sink_global_small_max_mubuf_offset:
 ; GCN: s_and_saveexec_b64
 ; SICIVI: buffer_load_sbyte {{v[0-9]+}}, off, {{s\[[0-9]+:[0-9]+\]}}, 0 offset:4095{{$}}
-; GFX9: v_mov_b32_e32 [[ZERO:v[0-9]+]], 0{{$}}
-; GFX9: global_load_sbyte {{v[0-9]+}}, [[ZERO]], {{s\[[0-9]+:[0-9]+\]}} offset:4095{{$}}
+; GFX9: global_load_sbyte {{v[0-9]+}}, {{v[0-9]+}}, {{s\[[0-9]+:[0-9]+\]}} offset:4095{{$}}
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arsenm wrote:

This still needs the zero check, the mov is just above here now? 

https://github.com/llvm/llvm-project/pull/139716