[llvm] [AMDGPU] Fix register class constraints for si-fold-operands pass when folding immediate into copies (PR #131387)

[Jay Foad via llvm-commits]

================
@@ -185,52 +185,49 @@ body:             |
 
 ...
 
-# FIXME: Register class restrictions of av register not respected,
-# issue 130020
-
-# ---
-# name: s_mov_b32_inlineimm_copy_s_to_av_32
-# tracksRegLiveness: true
-# body:             |
-#   bb.0:
-#     %0:sreg_32 = S_MOV_B32 32
-#     %1:av_32 = COPY %0
-#     $agpr0 = COPY %1
-#     S_ENDPGM 0
-
-# ...
-
-# ---
-# name: v_mov_b32_inlineimm_copy_v_to_av_32
-# tracksRegLiveness: true
-# body:             |
-#  bb.0:
-#    %0:vgpr_32 = V_MOV_B32_e32 32, implicit $exec
-#    %1:av_32 = COPY %0
-#    $agpr0 = COPY %1
-#    S_ENDPGM 0
-# ...
-
-# ---
-# name: s_mov_b32_imm_literal_copy_s_to_av_32
-# tracksRegLiveness: true
-# body:             |
-#   bb.0:
-#     %0:sreg_32 = S_MOV_B32 999
-#     %1:av_32 = COPY %0
-#     $agpr0 = COPY %1
-#     S_ENDPGM 0
-
-# ...
-
-# ---
-# name: v_mov_b32_imm_literal_copy_v_to_av_32
-# tracksRegLiveness: true
-# body:             |
-#   bb.0:
-#     %0:vgpr_32 = V_MOV_B32_e32 999, implicit $exec
-#     %1:av_32 = COPY %0
-#     $agpr0 = COPY %1
-#     S_ENDPGM 0
-
-# ...
+---
+name: s_mov_b32_inlineimm_copy_s_to_av_32
----------------
jayfoad wrote:

New tests need checks for the expected output. Maybe convert the while file to use update_mir_test_checks?

https://github.com/llvm/llvm-project/pull/131387