diff options
Diffstat (limited to 'lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp')
| -rw-r--r-- | lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp | 53 |
1 files changed, 36 insertions, 17 deletions
diff --git a/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp b/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp index a5a28692f1..e124615311 100644 --- a/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp +++ b/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp @@ -175,23 +175,8 @@ namespace { raw_ostream &O); void printVFPf64ImmOperand(const MachineInstr *MI, int OpNum, raw_ostream &O); - - void printHex8ImmOperand(const MachineInstr *MI, int OpNum, - raw_ostream &O) { - O << "#0x" << utohexstr(MI->getOperand(OpNum).getImm() & 0xff); - } - void printHex16ImmOperand(const MachineInstr *MI, int OpNum, - raw_ostream &O) { - O << "#0x" << utohexstr(MI->getOperand(OpNum).getImm() & 0xffff); - } - void printHex32ImmOperand(const MachineInstr *MI, int OpNum, - raw_ostream &O) { - O << "#0x" << utohexstr(MI->getOperand(OpNum).getImm() & 0xffffffff); - } - void printHex64ImmOperand(const MachineInstr *MI, int OpNum, - raw_ostream &O) { - O << "#0x" << utohexstr(MI->getOperand(OpNum).getImm()); - } + void printNEONModImmOperand(const MachineInstr *MI, int OpNum, + raw_ostream &O); virtual bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNum, unsigned AsmVariant, const char *ExtraCode, @@ -1039,6 +1024,40 @@ void ARMAsmPrinter::printVFPf64ImmOperand(const MachineInstr *MI, int OpNum, } } +void ARMAsmPrinter::printNEONModImmOperand(const MachineInstr *MI, int OpNum, + raw_ostream &O) { + unsigned Imm = MI->getOperand(OpNum).getImm(); + unsigned OpCmode = (Imm >> 8) & 0x1f; + unsigned Imm8 = Imm & 0xff; + uint64_t Val = 0; + + if (OpCmode == 0xe) { + // 8-bit vector elements + Val = Imm8; + } else if ((OpCmode & 0xc) == 0x8) { + // 16-bit vector elements + unsigned ByteNum = (OpCmode & 0x6) >> 1; + Val = Imm8 << (8 * ByteNum); + } else if ((OpCmode & 0x8) == 0) { + // 32-bit vector elements, zero with one byte set + unsigned ByteNum = (OpCmode & 0x6) >> 1; + Val = Imm8 << (8 * ByteNum); + } else if ((OpCmode & 0xe) == 0xc) { + // 32-bit vector elements, one byte with low bits set + unsigned ByteNum = (OpCmode & 0x1); + Val = (Imm8 << (8 * ByteNum)) | (0xffff >> (8 * (1 - ByteNum))); + } else if (OpCmode == 0x1e) { + // 64-bit vector elements + for (unsigned ByteNum = 0; ByteNum < 8; ++ByteNum) { + if ((Imm >> ByteNum) & 1) + Val |= (uint64_t)0xff << (8 * ByteNum); + } + } else { + assert(false && "Unsupported NEON immediate"); + } + O << "#0x" << utohexstr(Val); +} + bool ARMAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNum, unsigned AsmVariant, const char *ExtraCode, raw_ostream &O) { |