[llvm] [AMDGPU][NFCI] Decouple actual register encodings from HWEncoding values. (PR #69452)

[Stanislav Mekhanoshin via llvm-commits]

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@@ -38,9 +38,16 @@ using namespace llvm;
 
 #define DEBUG_TYPE "amdgpu-disassembler"
 
-#define SGPR_MAX                                                               \
-  (isGFX10Plus() ? AMDGPU::EncValues::SGPR_MAX_GFX10                           \
-                 : AMDGPU::EncValues::SGPR_MAX_SI)
+enum : unsigned {
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rampitec wrote:

I was specifically surprised that LITERAL_CONST isn't used. I do not see moving it to decoding side a good thing, I would rather replace uses of 255 on the encoding side.

https://github.com/llvm/llvm-project/pull/69452