[llvm] [AMDGPU] Account for inline asm size in inst_pref_size calculation (PR #192306)

[Matt Arsenault via llvm-commits]

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@@ -232,6 +232,9 @@ inline raw_ostream &operator<<(raw_ostream &OS,
   return OS;
 }
 
+/// \returns Instruction cache line size in bytes for given subtarget \p STI.
+unsigned getInstCacheLineSize(const MCSubtargetInfo *STI);
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arsenm wrote:

This can be const ref (we should fix the others for consistency too)

https://github.com/llvm/llvm-project/pull/192306