[llvm] [AMDGPU] Add CodeGen support for GFX12 s_mul_u64 (PR #75825)

[Jay Foad via llvm-commits]

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@@ -2451,6 +2576,72 @@ void AMDGPURegisterBankInfo::applyMappingImpl(
 
     return;
   }
+  case AMDGPU::G_AMDGPU_S_MUL_I64_I32_PSEUDO:
+  case AMDGPU::G_AMDGPU_S_MUL_U64_U32_PSEUDO: {
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jayfoad wrote:

Done.

https://github.com/llvm/llvm-project/pull/75825