[llvm] Reland "[NFC][AMDGPU] Do not flush after printing every instruction" (PR #95248)

[Matt Arsenault via llvm-commits]

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@@ -49,12 +44,10 @@ user_sgpr_kernarg_preload_length:
   .amdhsa_next_free_vgpr 0
   .amdhsa_next_free_sgpr 0
   .amdhsa_accum_offset 4
+// ASM: :[[@LINE+1]]:{{[0-9]+}}: error: directive should have resolvable expression
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arsenm wrote:

Just precommit the unrelated test changes 

https://github.com/llvm/llvm-project/pull/95248