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with the picbase nonsense starting to be figured out, implement

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lowering support for MovePCtoLR[8].  Down to 4 failures again.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119090 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-11-14 22:56:43 +00:00
parent 142b531e02
commit 749ba48fab
1 changed files with 22 additions and 0 deletions
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22
lib/Target/PowerPC/PPCAsmPrinter.cpp
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@ -558,6 +558,28 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
// Lower multi-instruction pseudo operations. // Lower multi-instruction pseudo operations.
switch (MI->getOpcode()) { switch (MI->getOpcode()) {
default: break; default: break;
case PPC::MovePCtoLR:
case PPC::MovePCtoLR8: {
// Transform %LR = MovePCtoLR
// Into this, where the label is the PIC base:
// bl L1$pb
// L1$pb:
MCSymbol *PICBase = MF->getPICBaseSymbol();
// Emit the 'bl'.
TmpInst.setOpcode(PPC::BL_Darwin); // Darwin vs SVR4 doesn't matter here.
// FIXME: We would like an efficient form for this, so we don't have to do
// a lot of extra uniquing.
TmpInst.addOperand(MCOperand::CreateExpr(MCSymbolRefExpr::
Create(PICBase, OutContext)));
OutStreamer.EmitInstruction(TmpInst);
// Emit the label.
OutStreamer.EmitLabel(PICBase);
return;
}
case PPC::LDtoc: { case PPC::LDtoc: {
// Transform %X3 = LDtoc <ga:@min1>, %X2 // Transform %X3 = LDtoc <ga:@min1>, %X2
LowerPPCMachineInstrToMCInst(MI, TmpInst, *this); LowerPPCMachineInstrToMCInst(MI, TmpInst, *this);