================
@@ -283,17 +393,47 @@ class PrologEpilogSGPRSpillBuilder {
.addReg(SubReg)
.addImm(Spill[I].Lane)
.addReg(Spill[I].VGPR, RegState::Undef);
+ if (NeedsFrameMoves && !CFISuperReg)
+ TFI->buildCFIForSGPRToVGPRSpill(MBB, MI, DL, SubReg, Spill[I].VGPR,
+ Spill[I].Lane);
}
+ if (NeedsFrameMoves && CFISuperReg)
+ TFI->buildCFIForSGPRToVGPRSpill(MBB, MI, DL, *CFISuperReg, Spill);
}
void copyToScratchSGPR(Register DstReg) const {
BuildMI(MBB, MI, DL, TII->get(AMDGPU::COPY), DstReg)
.addReg(SuperReg)
.setMIFlag(MachineInstr::FrameSetup);
+ if (NeedsFrameMoves) {
+ const TargetRegisterClass *RC = TRI.getPhysRegBaseClass(DstReg);
+ ArrayRef<int16_t> DstSplitParts = TRI.getRegSplitParts(RC, EltSize);
+ unsigned DstNumSubRegs = DstSplitParts.empty() ? 1 :
DstSplitParts.size();
+ assert(NumSubRegs == DstNumSubRegs);
+ for (unsigned I = 0; I < NumSubRegs; ++I) {
+ Register SrcSubReg =
+ NumSubRegs == 1 ? SuperReg
+ : Register(TRI.getSubReg(SuperReg, SplitParts[I]));
+ Register DstSubReg =
+ NumSubRegs == 1 ? DstReg
+ : Register(TRI.getSubReg(DstReg,
DstSplitParts[I]));
----------------
arsenm wrote:
```suggestion
: MCRegister(TRI.getSubReg(DstReg,
DstSplitParts[I]));
```
https://github.com/llvm/llvm-project/pull/164723
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