diff options
Diffstat (limited to 'llvm/lib/Target/ARM/ARMAsmPrinter.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMAsmPrinter.cpp | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp index cea9fd5aaec..df75ff203dc 100644 --- a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp +++ b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp @@ -1351,6 +1351,35 @@ void ARMAsmPrinter::printInstructionThroughMCStreamer(const MachineInstr *MI) { OutStreamer.EmitInstruction(AddInst); return; } + case ARM::PICLDR: { + // This is a pseudo op for a label + instruction sequence, which looks like: + // LPC0: + // ldr r0, [pc, r0] + // The LCP0 label is referenced by a constant pool entry in order to get + // a PC-relative address at the ldr instruction. + + // Emit the label. + // FIXME: MOVE TO SHARED PLACE. + unsigned Id = (unsigned)MI->getOperand(2).getImm(); + const char *Prefix = MAI->getPrivateGlobalPrefix(); + MCSymbol *Label =OutContext.GetOrCreateSymbol(Twine(Prefix) + + "PC" + Twine(getFunctionNumber()) + "_" + Twine(Id)); + OutStreamer.EmitLabel(Label); + + // Form and emit the load + MCInst LdrInst; + LdrInst.setOpcode(ARM::LDR); + LdrInst.addOperand(MCOperand::CreateReg(MI->getOperand(0).getReg())); + LdrInst.addOperand(MCOperand::CreateReg(ARM::PC)); + LdrInst.addOperand(MCOperand::CreateReg(MI->getOperand(1).getReg())); + LdrInst.addOperand(MCOperand::CreateImm(0)); + // Add predicate operands. + LdrInst.addOperand(MCOperand::CreateImm(MI->getOperand(3).getImm())); + LdrInst.addOperand(MCOperand::CreateReg(MI->getOperand(4).getReg())); + OutStreamer.EmitInstruction(LdrInst); + + return; + } case ARM::CONSTPOOL_ENTRY: { // FIXME: Remove asm string from td file. /// CONSTPOOL_ENTRY - This instruction represents a floating constant pool /// in the function. The first operand is the ID# for this instruction, the |
