diff options
Diffstat (limited to 'llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp')
-rw-r--r-- | llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp b/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp index 81a61fe9646..49260bbbf28 100644 --- a/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp +++ b/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp @@ -63,7 +63,7 @@ namespace { // fields in the IT instruction encoding. void setITState(char Firstcond, char Mask) { // (3 - the number of trailing zeros) is the number of then / else. - unsigned CondBit0 = Mask >> 4 & 1; + unsigned CondBit0 = Firstcond & 1; unsigned NumTZ = CountTrailingZeros_32(Mask); unsigned char CCBits = static_cast<unsigned char>(Firstcond & 0xf); assert(NumTZ <= 3 && "Invalid IT mask!"); @@ -4217,19 +4217,14 @@ static DecodeStatus DecodeIT(MCInst &Inst, unsigned Insn, uint64_t Address, const void *Decoder) { DecodeStatus S = MCDisassembler::Success; unsigned pred = fieldFromInstruction16(Insn, 4, 4); - // The InstPrinter needs to have the low bit of the predicate in - // the mask operand to be able to print it properly. - unsigned mask = fieldFromInstruction16(Insn, 0, 5); + unsigned mask = fieldFromInstruction16(Insn, 0, 4); if (pred == 0xF) { pred = 0xE; S = MCDisassembler::SoftFail; } - if ((mask & 0xF) == 0) { - // Preserve the high bit of the mask, which is the low bit of - // the predicate. - mask &= 0x10; + if (mask == 0x0) { mask |= 0x8; S = MCDisassembler::SoftFail; } |