[llvm] [AMDGPU] Improve isBasicBlockPrologue to only add necessary instructions (PR #113303)

[Matt Arsenault via llvm-commits]

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@@ -8901,6 +8901,22 @@ unsigned SIInstrInfo::getLiveRangeSplitOpcode(Register SrcReg,
   return AMDGPU::COPY;
 }
 
+bool SIInstrInfo::isPrologueOperandReload(const MachineInstr &MI) const {
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arsenm wrote:

Document this 

https://github.com/llvm/llvm-project/pull/113303