================
@@ -511,6 +511,14 @@ SIRegisterInfo::getLargestLegalSuperClass(const
TargetRegisterClass *RC,
Register SIRegisterInfo::getFrameRegister(const MachineFunction &MF) const {
const SIFrameLowering *TFI = ST.getFrameLowering();
const SIMachineFunctionInfo *FuncInfo = MF.getInfo<SIMachineFunctionInfo>();
+
+ // If we need to reserve scratch space for saving the VGPRs, then we should
+ // use the frame register for accessing our own frame (which may start at a
+ // non-zero offset).
+ if (TFI->mayReserveScratchForCWSR(MF))
+ return TFI->hasFP(MF) ? FuncInfo->getFrameOffsetReg()
----------------
rovka wrote:
I was actually already doing that :D I cleaned this up now.
https://github.com/llvm/llvm-project/pull/130055
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