From 749ba48fabc929ae39d750e39231919f2135a500 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sun, 14 Nov 2010 22:56:43 +0000 Subject: [PATCH] with the picbase nonsense starting to be figured out, implement 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 --- lib/Target/PowerPC/PPCAsmPrinter.cpp | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/lib/Target/PowerPC/PPCAsmPrinter.cpp b/lib/Target/PowerPC/PPCAsmPrinter.cpp index 1d1ed67c311..c047af3e142 100644 --- a/lib/Target/PowerPC/PPCAsmPrinter.cpp +++ b/lib/Target/PowerPC/PPCAsmPrinter.cpp @@ -558,6 +558,28 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) { // Lower multi-instruction pseudo operations. switch (MI->getOpcode()) { 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: { // Transform %X3 = LDtoc , %X2 LowerPPCMachineInstrToMCInst(MI, TmpInst, *this); -- 2.34.1