diff options
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCISelLowering.h')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCISelLowering.h | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.h b/llvm/lib/Target/PowerPC/PPCISelLowering.h index 8ea419d0ea5..d28799ad582 100644 --- a/llvm/lib/Target/PowerPC/PPCISelLowering.h +++ b/llvm/lib/Target/PowerPC/PPCISelLowering.h @@ -162,7 +162,16 @@ namespace llvm { /// CMP_UNRESERVE = Test for equality and "unreserve" if not true. This /// is used to implement atomic operations. - CMP_UNRESERVE + CMP_UNRESERVE, + + /// TAILCALL - Indicates a tail call should be taken. + TAILCALL, + /// TC_RETURN - A tail call return. + /// operand #0 chain + /// operand #1 callee (register or absolute) + /// operand #2 stack adjustment + /// operand #3 optional in flag + TC_RETURN }; } @@ -308,11 +317,27 @@ namespace llvm { /// the offset of the target addressing mode. virtual bool isLegalAddressImmediate(GlobalValue *GV) const; + /// IsEligibleForTailCallOptimization - Check whether the call is eligible + /// for tail call optimization. Target which want to do tail call + /// optimization should implement this function. + virtual bool IsEligibleForTailCallOptimization(SDOperand Call, + SDOperand Ret, + SelectionDAG &DAG) const; + private: /// PPCAtomicLabelIndex - Keep track the number of PPC atomic labels. /// unsigned PPCAtomicLabelIndex; + SDOperand getFramePointerFrameIndex(SelectionDAG & DAG) const; + SDOperand getReturnAddrFrameIndex(SelectionDAG & DAG) const; + + SDOperand EmitTailCallLoadFPAndRetAddr(SelectionDAG & DAG, + int SPDiff, + SDOperand Chain, + SDOperand &LROpOut, + SDOperand &FPOpOut); + SDOperand LowerRETURNADDR(SDOperand Op, SelectionDAG &DAG); SDOperand LowerFRAMEADDR(SDOperand Op, SelectionDAG &DAG); SDOperand LowerConstantPool(SDOperand Op, SelectionDAG &DAG); |
