[llvm] AMDGPU/NewPM: Port SIFixSGPRCopies to new pass manager (PR #102614)

[Jay Foad via llvm-commits]

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@@ -158,6 +157,20 @@ class SIFixSGPRCopies : public MachineFunctionPass {
   bool tryMoveVGPRConstToSGPR(MachineOperand &MO, Register NewDst,
                               MachineBasicBlock *BlockToInsertTo,
                               MachineBasicBlock::iterator PointToInsertTo);
+};
+
+class SIFixSGPRCopiesLegacy : public MachineFunctionPass {
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jayfoad wrote:

I'd have called it SIFixSGPRCopiesLegacy**Pass** but I see there are precedents for this weird naming.

https://github.com/llvm/llvm-project/pull/102614