diff options
Diffstat (limited to 'lib/Target/X86/AsmPrinter/X86MCInstLower.cpp')
| -rw-r--r-- | lib/Target/X86/AsmPrinter/X86MCInstLower.cpp | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp b/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp index 737b360..09f150b 100644 --- a/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp +++ b/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp @@ -395,10 +395,9 @@ void X86MCInstLower::Lower(const MachineInstr *MI, MCInst &OutMI) const { LowerUnaryToTwoAddr(OutMI, X86::XOR32rr); // MOV32r0 -> XOR32rr break; - // TAILJMPr, TAILJMPr64, CALL64r, CALL64pcrel32 - These instructions have + // TAILJMPr64, CALL64r, CALL64pcrel32 - These instructions have // register inputs modeled as normal uses instead of implicit uses. As such, // truncate off all but the first operand (the callee). FIXME: Change isel. - case X86::TAILJMPr: case X86::TAILJMPr64: case X86::CALL64r: case X86::CALL64pcrel32: { @@ -411,11 +410,20 @@ void X86MCInstLower::Lower(const MachineInstr *MI, MCInst &OutMI) const { } // TAILJMPd, TAILJMPd64 - Lower to the correct jump instructions. + case X86::TAILJMPr: case X86::TAILJMPd: case X86::TAILJMPd64: { + unsigned Opcode; + switch (OutMI.getOpcode()) { + default: assert(0 && "Invalid opcode"); + case X86::TAILJMPr: Opcode = X86::JMP32r; break; + case X86::TAILJMPd: + case X86::TAILJMPd64: Opcode = X86::JMP_1; break; + } + MCOperand Saved = OutMI.getOperand(0); OutMI = MCInst(); - OutMI.setOpcode(X86::TAILJMP_1); + OutMI.setOpcode(Opcode); OutMI.addOperand(Saved); break; } @@ -549,6 +557,13 @@ void X86AsmPrinter::EmitInstruction(const MachineInstr *MI) { } return; + case X86::TAILJMPr: + case X86::TAILJMPd: + case X86::TAILJMPd64: + // Lower these as normal, but add some comments. + OutStreamer.AddComment("TAILCALL"); + break; + case X86::MOVPC32r: { MCInst TmpInst; // This is a pseudo op for a two instruction sequence with a label, which |