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Update the X86 JIT to make it work with the new two-addr changes. This also 

adds assertions that check to make sure every operand gets emitted.

llvm-svn: 30110
This commit is contained in:
Chris Lattner 2006-09-05 02:52:35 +00:00
parent af23f9b5f6
commit e3d2e1e41e
1 changed files with 51 additions and 40 deletions
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91
llvm/lib/Target/X86/X86CodeEmitter.cpp
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@ -246,7 +246,7 @@ void Emitter::emitMemModRMByte(const MachineInstr &MI,
} else if (Op3.isJumpTableIndex()) {
DispVal += MCE.getJumpTableEntryAddress(Op3.getJumpTableIndex());
} else {
DispVal = Op3.getImmedValue();
DispVal = Op3.getImm();
}
const MachineOperand &Base = MI.getOperand(Op);
@ -306,7 +306,7 @@ void Emitter::emitMemModRMByte(const MachineInstr &MI,
// Calculate what the SS field value should be...
static const unsigned SSTable[] = { ~0, 0, 1, ~0, 2, ~0, ~0, ~0, 3 };
unsigned SS = SSTable[Scale.getImmedValue()];
unsigned SS = SSTable[Scale.getImm()];
if (BaseReg == 0) {
// Handle the SIB byte for the case where there is no base. The
@ -377,6 +377,10 @@ void Emitter::emitInstruction(const MachineInstr &MI) {
case 0: break; // No prefix!
}
// If this is a two-address instruction, skip one of the register operands.
unsigned CurOp = 0;
CurOp += (Desc.Flags & M_2_ADDR_FLAG) != 0;
unsigned char BaseOpcode = II->getBaseOpcodeFor(Opcode);
switch (Desc.TSFlags & X86II::FormMask) {
default: assert(0 && "Unknown FormMask value in X86 MachineCodeEmitter!");
@ -401,12 +405,13 @@ void Emitter::emitInstruction(const MachineInstr &MI) {
break;
}
#endif
CurOp = MI.getNumOperands();
break;
case X86II::RawFrm:
MCE.emitByte(BaseOpcode);
if (Desc.numOperands == 1) {
const MachineOperand &MO = MI.getOperand(0);
if (CurOp != MI.getNumOperands()) {
const MachineOperand &MO = MI.getOperand(CurOp++);
if (MO.isMachineBasicBlock()) {
emitPCRelativeBlockAddress(MO.getMachineBasicBlock());
} else if (MO.isGlobalAddress()) {
@ -416,7 +421,7 @@ void Emitter::emitInstruction(const MachineInstr &MI) {
} else if (MO.isExternalSymbol()) {
emitExternalSymbolAddress(MO.getSymbolName(), true);
} else if (MO.isImmediate()) {
emitConstant(MO.getImmedValue(), sizeOfImm(Desc));
emitConstant(MO.getImm(), sizeOfImm(Desc));
} else {
assert(0 && "Unknown RawFrm operand!");
}
@ -424,9 +429,10 @@ void Emitter::emitInstruction(const MachineInstr &MI) {
break;
case X86II::AddRegFrm:
MCE.emitByte(BaseOpcode + getX86RegNum(MI.getOperand(0).getReg()));
if (MI.getNumOperands() == 2) {
const MachineOperand &MO1 = MI.getOperand(1);
MCE.emitByte(BaseOpcode + getX86RegNum(MI.getOperand(CurOp++).getReg()));
if (CurOp != MI.getNumOperands()) {
const MachineOperand &MO1 = MI.getOperand(CurOp++);
if (MO1.isGlobalAddress()) {
assert(sizeOfImm(Desc) == 4 &&
"Don't know how to emit non-pointer values!");
@ -440,39 +446,43 @@ void Emitter::emitInstruction(const MachineInstr &MI) {
"Don't know how to emit non-pointer values!");
emitConstant(MCE.getJumpTableEntryAddress(MO1.getJumpTableIndex()), 4);
} else {
emitConstant(MO1.getImmedValue(), sizeOfImm(Desc));
emitConstant(MO1.getImm(), sizeOfImm(Desc));
}
}
break;
case X86II::MRMDestReg: {
MCE.emitByte(BaseOpcode);
emitRegModRMByte(MI.getOperand(0).getReg(),
getX86RegNum(MI.getOperand(1).getReg()));
if (MI.getNumOperands() == 3)
emitConstant(MI.getOperand(2).getImmedValue(), sizeOfImm(Desc));
emitRegModRMByte(MI.getOperand(CurOp).getReg(),
getX86RegNum(MI.getOperand(CurOp+1).getReg()));
CurOp += 2;
if (CurOp != MI.getNumOperands())
emitConstant(MI.getOperand(CurOp++).getImm(), sizeOfImm(Desc));
break;
}
case X86II::MRMDestMem:
MCE.emitByte(BaseOpcode);
emitMemModRMByte(MI, 0, getX86RegNum(MI.getOperand(4).getReg()));
if (MI.getNumOperands() == 6)
emitConstant(MI.getOperand(5).getImmedValue(), sizeOfImm(Desc));
emitMemModRMByte(MI, CurOp, getX86RegNum(MI.getOperand(CurOp+4).getReg()));
CurOp += 5;
if (CurOp != MI.getNumOperands())
emitConstant(MI.getOperand(CurOp++).getImm(), sizeOfImm(Desc));
break;
case X86II::MRMSrcReg:
MCE.emitByte(BaseOpcode);
emitRegModRMByte(MI.getOperand(1).getReg(),
getX86RegNum(MI.getOperand(0).getReg()));
if (MI.getNumOperands() == 3)
emitConstant(MI.getOperand(2).getImmedValue(), sizeOfImm(Desc));
emitRegModRMByte(MI.getOperand(CurOp+1).getReg(),
getX86RegNum(MI.getOperand(CurOp).getReg()));
CurOp += 2;
if (CurOp != MI.getNumOperands())
emitConstant(MI.getOperand(CurOp++).getImm(), sizeOfImm(Desc));
break;
case X86II::MRMSrcMem:
MCE.emitByte(BaseOpcode);
emitMemModRMByte(MI, 1, getX86RegNum(MI.getOperand(0).getReg()));
if (MI.getNumOperands() == 2+4)
emitConstant(MI.getOperand(5).getImmedValue(), sizeOfImm(Desc));
emitMemModRMByte(MI, CurOp+1, getX86RegNum(MI.getOperand(CurOp).getReg()));
CurOp += 5;
if (CurOp != MI.getNumOperands())
emitConstant(MI.getOperand(CurOp++).getImm(), sizeOfImm(Desc));
break;
case X86II::MRM0r: case X86II::MRM1r:
@ -480,13 +490,11 @@ void Emitter::emitInstruction(const MachineInstr &MI) {
case X86II::MRM4r: case X86II::MRM5r:
case X86II::MRM6r: case X86II::MRM7r:
MCE.emitByte(BaseOpcode);
emitRegModRMByte(MI.getOperand(0).getReg(),
emitRegModRMByte(MI.getOperand(CurOp++).getReg(),
(Desc.TSFlags & X86II::FormMask)-X86II::MRM0r);
if (MI.getOperand(MI.getNumOperands()-1).isImmediate()) {
emitConstant(MI.getOperand(MI.getNumOperands()-1).getImmedValue(),
sizeOfImm(Desc));
}
if (CurOp != MI.getNumOperands())
emitConstant(MI.getOperand(CurOp++).getImm(), sizeOfImm(Desc));
break;
case X86II::MRM0m: case X86II::MRM1m:
@ -494,17 +502,17 @@ void Emitter::emitInstruction(const MachineInstr &MI) {
case X86II::MRM4m: case X86II::MRM5m:
case X86II::MRM6m: case X86II::MRM7m:
MCE.emitByte(BaseOpcode);
emitMemModRMByte(MI, 0, (Desc.TSFlags & X86II::FormMask)-X86II::MRM0m);
emitMemModRMByte(MI, CurOp, (Desc.TSFlags & X86II::FormMask)-X86II::MRM0m);
CurOp += 4;
if (MI.getNumOperands() == 5) {
if (MI.getOperand(4).isImmediate())
emitConstant(MI.getOperand(4).getImmedValue(), sizeOfImm(Desc));
else if (MI.getOperand(4).isGlobalAddress())
emitGlobalAddressForPtr(MI.getOperand(4).getGlobal(),
MI.getOperand(4).getOffset());
else if (MI.getOperand(4).isJumpTableIndex())
emitConstant(MCE.getJumpTableEntryAddress(MI.getOperand(4)
.getJumpTableIndex()), 4);
if (CurOp != MI.getNumOperands()) {
const MachineOperand &MO = MI.getOperand(CurOp++);
if (MO.isImmediate())
emitConstant(MO.getImm(), sizeOfImm(Desc));
else if (MO.isGlobalAddress())
emitGlobalAddressForPtr(MO.getGlobal(), MO.getOffset());
else if (MO.isJumpTableIndex())
emitConstant(MCE.getJumpTableEntryAddress(MO.getJumpTableIndex()), 4);
else
assert(0 && "Unknown operand!");
}
@ -512,8 +520,11 @@ void Emitter::emitInstruction(const MachineInstr &MI) {
case X86II::MRMInitReg:
MCE.emitByte(BaseOpcode);
emitRegModRMByte(MI.getOperand(0).getReg(),
getX86RegNum(MI.getOperand(0).getReg()));
// Duplicate register, used by things like MOV8r0 (aka xor reg,reg).
emitRegModRMByte(MI.getOperand(CurOp).getReg(),
getX86RegNum(MI.getOperand(CurOp).getReg()));
++CurOp;
break;
}
assert(CurOp == MI.getNumOperands() && "Unknown encoding!");
}