[llvm] [RISCV] Fix double counting CSRs with Zcmp in RISCVFrameLowering::getFrameIndexReference. (PR #117207)

[Craig Topper via llvm-commits]

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@@ -1205,7 +1205,6 @@ RISCVFrameLowering::getFrameIndexReference(const MachineFunction &MF, int FI,
     // alignment padding.
     int ScalarLocalVarSize = MFI.getStackSize() -
                              RVFI->getCalleeSavedStackSize() -
-                             RVFI->getRVPushStackSize() -
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topperc wrote:

Probably. The bug was found by a user on an older release of our internal compiler that didn't have emitCalleeSavedRVVPrologCFI.

https://github.com/llvm/llvm-project/pull/117207