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ARM NEON VTBL/VTBX assembly parsing and encoding.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146691 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach
2011-12-15 22:27:11 +00:00
parent b6ff6ec85e
commit 60d99a5278
5 changed files with 43 additions and 51 deletions
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5
lib/Target/ARM/Disassembler/ARMDisassembler.cpp
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@ -2644,7 +2644,6 @@ static DecodeStatus DecodeTBLInstruction(llvm::MCInst &Inst, unsigned Insn,
unsigned Rm = fieldFromInstruction32(Insn, 0, 4);
Rm |= fieldFromInstruction32(Insn, 5, 1) << 4;
unsigned op = fieldFromInstruction32(Insn, 6, 1);
unsigned length = fieldFromInstruction32(Insn, 8, 2) + 1;
if (!Check(S, DecodeDPRRegisterClass(Inst, Rd, Address, Decoder)))
return MCDisassembler::Fail;
@ -2653,10 +2652,8 @@ static DecodeStatus DecodeTBLInstruction(llvm::MCInst &Inst, unsigned Insn,
return MCDisassembler::Fail; // Writeback
}
for (unsigned i = 0; i < length; ++i) {
if (!Check(S, DecodeDPRRegisterClass(Inst, (Rn+i)%32, Address, Decoder)))
if (!Check(S, DecodeDPRRegisterClass(Inst, Rn, Address, Decoder)))
return MCDisassembler::Fail;
}
if (!Check(S, DecodeDPRRegisterClass(Inst, Rm, Address, Decoder)))
return MCDisassembler::Fail;