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Use tPseudoExpand for tTAILJMPrND and tTAILJMPr.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134734 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2011-07-08 20:39:19 +00:00
parent af7f2d6b67
commit 0b44aea7b5
2 changed files with 8 additions and 20 deletions
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14
lib/Target/ARM/ARMAsmPrinter.cpp
View File

@ -1799,20 +1799,6 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) {
} }
return; return;
} }
// Tail jump branches are really just branch instructions with additional
// code-gen attributes. Convert them to the canonical form here.
case ARM::tTAILJMPrND:
case ARM::tTAILJMPr: {
MCInst TmpInst;
TmpInst.setOpcode(ARM::tBX);
TmpInst.addOperand(MCOperand::CreateReg(MI->getOperand(0).getReg()));
// Predicate.
TmpInst.addOperand(MCOperand::CreateImm(ARMCC::AL));
TmpInst.addOperand(MCOperand::CreateReg(0));
OutStreamer.AddComment("TAILCALL");
OutStreamer.EmitInstruction(TmpInst);
return;
}
} }
MCInst TmpInst; MCInst TmpInst;

14
lib/Target/ARM/ARMInstrThumb.td
View File

@ -578,9 +578,10 @@ let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1 in {
Uses = [SP] in { Uses = [SP] in {
// tTAILJMPd: Darwin version uses a Thumb2 branch (no Thumb1 tail calls // tTAILJMPd: Darwin version uses a Thumb2 branch (no Thumb1 tail calls
// on Darwin), so it's in ARMInstrThumb2.td. // on Darwin), so it's in ARMInstrThumb2.td.
def tTAILJMPr : tPseudoInst<(outs), (ins tcGPR:$dst, variable_ops), def tTAILJMPr : tPseudoExpand<(outs), (ins tcGPR:$dst, variable_ops),
Size4Bytes, IIC_Br, Size4Bytes, IIC_Br, [],
[]>, Requires<[IsThumb, IsDarwin]>; (tBX GPR:$dst, (ops 14, zero_reg))>,
Requires<[IsThumb, IsDarwin]>;
} }
// Non-Darwin versions (the difference is R9). // Non-Darwin versions (the difference is R9).
let Defs = [R0, R1, R2, R3, R12, QQQQ0, QQQQ2, QQQQ3, PC], let Defs = [R0, R1, R2, R3, R12, QQQQ0, QQQQ2, QQQQ3, PC],
@ -589,9 +590,10 @@ let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1 in {
Size4Bytes, IIC_Br, [], Size4Bytes, IIC_Br, [],
(tB t_brtarget:$dst)>, (tB t_brtarget:$dst)>,
Requires<[IsThumb, IsNotDarwin]>; Requires<[IsThumb, IsNotDarwin]>;
def tTAILJMPrND : tPseudoInst<(outs), (ins tcGPR:$dst, variable_ops), def tTAILJMPrND : tPseudoExpand<(outs), (ins tcGPR:$dst, variable_ops),
Size4Bytes, IIC_Br, Size4Bytes, IIC_Br, [],
[]>, Requires<[IsThumb, IsNotDarwin]>; (tBX GPR:$dst, (ops 14, zero_reg))>,
Requires<[IsThumb, IsNotDarwin]>;
} }
} }