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implement basic support for symbol operand lowering,

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and printing support for call operands.  Down to 77 failures.

llvm-svn: 119078
This commit is contained in:
Chris Lattner 2010-11-14 21:20:46 +00:00
parent 81233fbb1d
commit b12ecaae5a
3 changed files with 63 additions and 3 deletions
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13
lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp
View File

@ -88,6 +88,19 @@ void PPCInstPrinter::printS16X4ImmOperand(const MCInst *MI, unsigned OpNo,
#endif
}
void PPCInstPrinter::printBranchOperand(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
if (!MI->getOperand(OpNo).isImm())
return printOperand(MI, OpNo, O);
// Branches can take an immediate operand. This is used by the branch
// selection pass to print $+8, an eight byte displacement from the PC.
O << "$+" << MI->getOperand(OpNo).getImm()*4;
}
void PPCInstPrinter::printcrbitm(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
unsigned CCReg = MI->getOperand(OpNo).getReg();

6
lib/Target/PowerPC/InstPrinter/PPCInstPrinter.h
View File

@ -51,8 +51,10 @@ public:
void printS16ImmOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
void printU16ImmOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
void printS16X4ImmOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
void printBranchOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O) {}
void printCallOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O) {}
void printBranchOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
void printCallOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O) {
printOperand(MI, OpNo, O);
}
void printAbsAddrOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O) {}
void printcrbitm(const MCInst *MI, unsigned OpNo, raw_ostream &O);

47
lib/Target/PowerPC/PPCMCInstLower.cpp
View File

@ -17,10 +17,35 @@
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/Target/Mangler.h"
using namespace llvm;
static MCOperand GetSymbolRef(const MachineOperand &MO, const MCSymbol *Symbol,
AsmPrinter &Printer) {
MCContext &Ctx = Printer.OutContext;
const MCExpr *Expr;
switch (MO.getTargetFlags()) {
default: assert(0 && "Unknown target flag on symbol operand");
case 0:
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None, Ctx);
break;
#if 0
case ARMII::MO_LO16:
Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_ARM_LO16, Ctx);
break;
#endif
}
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::CreateAdd(Expr,
MCConstantExpr::Create(MO.getOffset(), Ctx),
Ctx);
return MCOperand::CreateExpr(Expr);
}
void llvm::LowerPPCMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
AsmPrinter &Printer) {
AsmPrinter &AP) {
OutMI.setOpcode(MI->getOpcode());
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
@ -38,6 +63,26 @@ void llvm::LowerPPCMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
case MachineOperand::MO_Immediate:
MCOp = MCOperand::CreateImm(MO.getImm());
break;
case MachineOperand::MO_MachineBasicBlock:
MCOp = MCOperand::CreateExpr(MCSymbolRefExpr::Create(
MO.getMBB()->getSymbol(), AP.OutContext));
break;
case MachineOperand::MO_GlobalAddress:
MCOp = GetSymbolRef(MO, AP.Mang->getSymbol(MO.getGlobal()), AP);
break;
case MachineOperand::MO_ExternalSymbol:
MCOp = GetSymbolRef(MO,
AP.GetExternalSymbolSymbol(MO.getSymbolName()), AP);
break;
case MachineOperand::MO_JumpTableIndex:
MCOp = GetSymbolRef(MO, AP.GetJTISymbol(MO.getIndex()), AP);
break;
case MachineOperand::MO_ConstantPoolIndex:
MCOp = GetSymbolRef(MO, AP.GetCPISymbol(MO.getIndex()), AP);
break;
case MachineOperand::MO_BlockAddress:
MCOp = GetSymbolRef(MO,AP.GetBlockAddressSymbol(MO.getBlockAddress()),AP);
break;
}
OutMI.addOperand(MCOp);