diff options
| author | Jim Grosbach <grosbach@apple.com> | 2010-11-17 21:05:55 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2010-11-17 21:05:55 +0000 |
| commit | f8dabac6041b2a38307a5ab0beb330ededb7514b (patch) | |
| tree | 8ff80e4eb9365d2da95798abe1eb1b0b59701518 /lib/Target/ARM/ARMAsmPrinter.cpp | |
| parent | 6b19491468e44249a35d869642e7302aaacb220b (diff) | |
Make the ARM BR_JTadd instruction an explicit pseudo and lower it properly
in the MC lowering process.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119559 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/ARMAsmPrinter.cpp')
| -rw-r--r-- | lib/Target/ARM/ARMAsmPrinter.cpp | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/lib/Target/ARM/ARMAsmPrinter.cpp b/lib/Target/ARM/ARMAsmPrinter.cpp index 081b160af3..b8cdbd3edf 100644 --- a/lib/Target/ARM/ARMAsmPrinter.cpp +++ b/lib/Target/ARM/ARMAsmPrinter.cpp @@ -938,8 +938,7 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) { } case ARM::tBR_JTr: case ARM::BR_JTr: - case ARM::BR_JTm: - case ARM::BR_JTadd: { + case ARM::BR_JTm: { // Lower and emit the instruction itself, then the jump table following it. MCInst TmpInst; // FIXME: The branch instruction is really a pseudo. We should xform it @@ -949,6 +948,25 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) { EmitJumpTable(MI); return; } + case ARM::BR_JTadd: { + // Lower and emit the instruction itself, then the jump table following it. + // add pc, target, idx + MCInst AddInst; + AddInst.setOpcode(ARM::ADDrr); + AddInst.addOperand(MCOperand::CreateReg(ARM::PC)); + AddInst.addOperand(MCOperand::CreateReg(MI->getOperand(0).getReg())); + AddInst.addOperand(MCOperand::CreateReg(MI->getOperand(1).getReg())); + // Add predicate operands. + AddInst.addOperand(MCOperand::CreateImm(ARMCC::AL)); + AddInst.addOperand(MCOperand::CreateReg(0)); + // Add 's' bit operand (always reg0 for this) + AddInst.addOperand(MCOperand::CreateReg(0)); + OutStreamer.EmitInstruction(AddInst); + + // Output the data for the jump table itself + EmitJumpTable(MI); + return; + } case ARM::TRAP: { // Non-Darwin binutils don't yet support the "trap" mnemonic. // FIXME: Remove this special case when they do. |