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add support for external symbols. The mc instprinter can now handle 

reasonable code like Codegen/ARM/2009-02-27-SpillerBug.ll, producing 
identical output except for superior formatting of constant pool entries.

llvm-svn: 84582
This commit is contained in:
Chris Lattner 2009-10-20 00:56:16 +00:00
parent 1b06acbd70
commit 43c5589a7e
2 changed files with 17 additions and 3 deletions
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18
llvm/lib/Target/ARM/AsmPrinter/ARMMCInstLower.cpp
View File

@ -54,6 +54,22 @@ GetGlobalAddressSymbol(const MachineOperand &MO) const {
return Ctx.GetOrCreateSymbol(Name.str());
}
MCSymbol *ARMMCInstLower::
GetExternalSymbolSymbol(const MachineOperand &MO) const {
SmallString<128> Name;
Name += Printer.MAI->getGlobalPrefix();
Name += MO.getSymbolName();
// FIXME: HANDLE PLT references how??
switch (MO.getTargetFlags()) {
default: assert(0 && "Unknown target flag on GV operand");
case 0: break;
}
return Ctx.GetOrCreateSymbol(Name.str());
}
MCSymbol *ARMMCInstLower::
GetJumpTableSymbol(const MachineOperand &MO) const {
@ -133,11 +149,9 @@ void ARMMCInstLower::Lower(const MachineInstr *MI, MCInst &OutMI) const {
case MachineOperand::MO_GlobalAddress:
MCOp = LowerSymbolOperand(MO, GetGlobalAddressSymbol(MO));
break;
#if 0
case MachineOperand::MO_ExternalSymbol:
MCOp = LowerSymbolOperand(MO, GetExternalSymbolSymbol(MO));
break;
#endif
case MachineOperand::MO_JumpTableIndex:
MCOp = LowerSymbolOperand(MO, GetJumpTableSymbol(MO));
break;

2
llvm/lib/Target/ARM/AsmPrinter/ARMMCInstLower.h
View File

@ -40,7 +40,7 @@ public:
//MCSymbol *GetPICBaseSymbol() const;
MCSymbol *GetGlobalAddressSymbol(const MachineOperand &MO) const;
//MCSymbol *GetExternalSymbolSymbol(const MachineOperand &MO) const;
MCSymbol *GetExternalSymbolSymbol(const MachineOperand &MO) const;
MCSymbol *GetJumpTableSymbol(const MachineOperand &MO) const;
MCSymbol *GetConstantPoolIndexSymbol(const MachineOperand &MO) const;
MCOperand LowerSymbolOperand(const MachineOperand &MO, MCSymbol *Sym) const;