diff options
Diffstat (limited to 'llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp')
| -rw-r--r-- | llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp b/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp index 26d5bca8de2..0ec22fa80e1 100644 --- a/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp +++ b/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp @@ -69,7 +69,13 @@ static const unsigned GPRDecoderTable[] = { static DecodeStatus DecodeGPRRegisterClass(MCInst &Inst, uint64_t RegNo, uint64_t Address, const void *Decoder) { - if (RegNo > array_lengthof(GPRDecoderTable)) + const FeatureBitset &FeatureBits = + static_cast<const MCDisassembler *>(Decoder) + ->getSubtargetInfo() + .getFeatureBits(); + bool IsRV32E = FeatureBits[RISCV::FeatureRV32E]; + + if (RegNo > array_lengthof(GPRDecoderTable) || (IsRV32E && RegNo > 15)) return MCDisassembler::Fail; // We must define our own mapping from RegNo to register identifier. |
