diff options
Diffstat (limited to 'llvm/lib/Target/Mips/MipsMCInstLower.cpp')
| -rw-r--r-- | llvm/lib/Target/Mips/MipsMCInstLower.cpp | 42 |
1 files changed, 23 insertions, 19 deletions
diff --git a/llvm/lib/Target/Mips/MipsMCInstLower.cpp b/llvm/lib/Target/Mips/MipsMCInstLower.cpp index d65e74d2c53..674bce30a5b 100644 --- a/llvm/lib/Target/Mips/MipsMCInstLower.cpp +++ b/llvm/lib/Target/Mips/MipsMCInstLower.cpp @@ -11,7 +11,6 @@ // MCInst records. // //===----------------------------------------------------------------------===// - #include "MipsMCInstLower.h" #include "MipsAsmPrinter.h" #include "MipsInstrInfo.h" @@ -190,10 +189,17 @@ void MipsMCInstLower::LowerLargeShift(const MachineInstr *MI, } } -// Pick a DEXT instruction variant based on the pos and size operands -void MipsMCInstLower::LowerDEXT(const MachineInstr *MI, MCInst& Inst) { +// Pick a DEXT or DINS instruction variant based on the pos and size operands +void MipsMCInstLower::LowerDextDins(const MachineInstr *MI, MCInst& Inst) { + int Opcode = MI->getOpcode(); + + if (Opcode == Mips::DEXT) + assert(MI->getNumOperands() == 4 && + "Invalid no. of machine operands for DEXT!"); + else // Only DEXT and DINS are possible + assert(MI->getNumOperands() == 5 && + "Invalid no. of machine operands for DINS!"); - assert(MI->getNumOperands() == 4 && "Invalid no. of machine operands for DEXT!"); assert(MI->getOperand(2).isImm()); int64_t pos = MI->getOperand(2).getImm(); assert(MI->getOperand(3).isImm()); @@ -204,23 +210,21 @@ void MipsMCInstLower::LowerDEXT(const MachineInstr *MI, MCInst& Inst) { // rs Inst.addOperand(LowerOperand(MI->getOperand(1))); - // DEXT - if ((pos < 32) && (size <= 32)) { - Inst.addOperand(MCOperand::CreateImm(pos)); - Inst.addOperand(MCOperand::CreateImm(size)); - Inst.setOpcode(Mips::DEXT); - } - // DEXTU - else if ((pos < 64) && (size <= 32)) { - Inst.addOperand(MCOperand::CreateImm(pos - 32)); - Inst.addOperand(MCOperand::CreateImm(size)); - Inst.setOpcode(Mips::DEXTU); - } - // DEXTM - else { + if (size <= 32) { + if ((pos < 32)) { // DEXT/DINS + Inst.addOperand(MCOperand::CreateImm(pos)); + Inst.addOperand(MCOperand::CreateImm(size)); + Inst.setOpcode(Opcode); + } else { // DEXTU/DINSU + Inst.addOperand(MCOperand::CreateImm(pos - 32)); + Inst.addOperand(MCOperand::CreateImm(size)); + Inst.setOpcode((Opcode == Mips::DEXT) ? Mips::DEXTU : Mips::DINSU); + } + } else { // DEXTM/DINSM + assert(pos < 32 && "DEXT/DINS cannot have both size and pos > 32"); Inst.addOperand(MCOperand::CreateImm(pos)); Inst.addOperand(MCOperand::CreateImm(size - 32)); Inst.setOpcode(Mips::DEXTM); + Inst.setOpcode((Opcode == Mips::DEXT) ? Mips::DEXTM : Mips::DINSM); } - return; } |
