diff options
Diffstat (limited to 'llvm/lib/Target/RISCV/RISCVFrameLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/RISCV/RISCVFrameLowering.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/llvm/lib/Target/RISCV/RISCVFrameLowering.cpp b/llvm/lib/Target/RISCV/RISCVFrameLowering.cpp index 6b6f62e18ce..daa7b7a7ea9 100644 --- a/llvm/lib/Target/RISCV/RISCVFrameLowering.cpp +++ b/llvm/lib/Target/RISCV/RISCVFrameLowering.cpp @@ -18,6 +18,7 @@ #include "llvm/CodeGen/MachineInstrBuilder.h" #include "llvm/CodeGen/MachineRegisterInfo.h" #include "llvm/CodeGen/RegisterScavenging.h" +#include "llvm/IR/DiagnosticInfo.h" #include "llvm/MC/MCDwarf.h" using namespace llvm; @@ -131,6 +132,12 @@ void RISCVFrameLowering::emitPrologue(MachineFunction &MF, if (StackSize == 0 && !MFI.adjustsStack()) return; + // If the stack pointer has been marked as reserved, then produce an error if + // the frame requires stack allocation + if (STI.isRegisterReservedByUser(SPReg)) + MF.getFunction().getContext().diagnose(DiagnosticInfoUnsupported{ + MF.getFunction(), "Stack pointer required, but has been reserved."}); + uint64_t FirstSPAdjustAmount = getFirstSPAdjustAmount(MF); // Split the SP adjustment to reduce the offsets of callee saved spill. if (FirstSPAdjustAmount) @@ -167,6 +174,10 @@ void RISCVFrameLowering::emitPrologue(MachineFunction &MF, // Generate new FP. if (hasFP(MF)) { + if (STI.isRegisterReservedByUser(FPReg)) + MF.getFunction().getContext().diagnose(DiagnosticInfoUnsupported{ + MF.getFunction(), "Frame pointer required, but has been reserved."}); + adjustReg(MBB, MBBI, DL, FPReg, SPReg, StackSize - RVFI->getVarArgsSaveSize(), MachineInstr::FrameSetup); |
