================
@@ -106,9 +111,14 @@ static void emitSCSEpilogue(MachineFunction &MF,
MachineBasicBlock &MBB,
CSI, [&](CalleeSavedInfo &CSR) { return CSR.getReg() == RAReg; }))
return;
+ const RISCVInstrInfo *TII = STI.getInstrInfo();
+ if (STI.hasFeature(RISCV::FeatureStdExtZicfiss)) {
----------------
kito-cheng wrote:
> Do we need an enable other than just the feature being in -march? The shadow
> stack pointer has to be set up when the application starts. Is this done by
> the kernel?
>
> My concern is that if your -mcpu supports Zicfiss, but the kernel doesn't,
> this will generate code that doesn't work.
oh, that's good point...let me check how other target do
https://github.com/llvm/llvm-project/pull/68075
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