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Reapply r128585 without generating a lib depedency cycle. An updated log:

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- Implement asm parsing support for LDRT, LDRBT, STRT, STRBT and
  {STR,LDC}{2}_{PRE,POST} fixing the encoding wherever is possible.
- Move all instructions which use am2offset without a pattern to use
  addrmode2.
- Add a new encoding bit to describe the index mode used and teach
  printAddrMode2Operand to check by the addressing mode which index
  mode to print.
- Testcases

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128632 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bruno Cardoso Lopes
2011-03-31 14:52:28 +00:00
parent 56584fcbfd
commit bcd3a9cd84
10 changed files with 359 additions and 86 deletions
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54
lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
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@@ -181,18 +181,12 @@ void ARMInstPrinter::printSORegOperand(const MCInst *MI, unsigned OpNum,
}
}
void ARMInstPrinter::printAddrMode2Operand(const MCInst *MI, unsigned Op,
raw_ostream &O) {
void ARMInstPrinter::printAM2PreOrOffsetIndexOp(const MCInst *MI, unsigned Op,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(Op);
const MCOperand &MO2 = MI->getOperand(Op+1);
const MCOperand &MO3 = MI->getOperand(Op+2);
if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
printOperand(MI, Op, O);
return;
}
O << "[" << getRegisterName(MO1.getReg());
if (!MO2.getReg()) {
@@ -215,6 +209,50 @@ void ARMInstPrinter::printAddrMode2Operand(const MCInst *MI, unsigned Op,
O << "]";
}
void ARMInstPrinter::printAM2PostIndexOp(const MCInst *MI, unsigned Op,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(Op);
const MCOperand &MO2 = MI->getOperand(Op+1);
const MCOperand &MO3 = MI->getOperand(Op+2);
O << "[" << getRegisterName(MO1.getReg()) << "], ";
if (!MO2.getReg()) {
unsigned ImmOffs = ARM_AM::getAM2Offset(MO3.getImm());
O << '#'
<< ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
<< ImmOffs;
return;
}
O << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
<< getRegisterName(MO2.getReg());
if (unsigned ShImm = ARM_AM::getAM2Offset(MO3.getImm()))
O << ", "
<< ARM_AM::getShiftOpcStr(ARM_AM::getAM2ShiftOpc(MO3.getImm()))
<< " #" << ShImm;
}
void ARMInstPrinter::printAddrMode2Operand(const MCInst *MI, unsigned Op,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(Op);
if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
printOperand(MI, Op, O);
return;
}
const MCOperand &MO3 = MI->getOperand(Op+2);
unsigned IdxMode = ARM_AM::getAM2IdxMode(MO3.getImm());
if (IdxMode == ARMII::IndexModePost) {
printAM2PostIndexOp(MI, Op, O);
return;
}
printAM2PreOrOffsetIndexOp(MI, Op, O);
}
void ARMInstPrinter::printAddrMode2OffsetOperand(const MCInst *MI,
unsigned OpNum,
raw_ostream &O) {