diff options
Diffstat (limited to 'lib/Target/X86/X86ISelLowering.h')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/lib/Target/X86/X86ISelLowering.h b/lib/Target/X86/X86ISelLowering.h index ca1a259803..8e268f119d 100644 --- a/lib/Target/X86/X86ISelLowering.h +++ b/lib/Target/X86/X86ISelLowering.h @@ -452,7 +452,17 @@ namespace llvm { virtual SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const; - virtual bool PerformDAGCombinePromotion(SDValue Op, EVT &PVT) const; + /// isTypeDesirableForOp - Return true if the target has native support for + /// the specified value type and it is 'desirable' to use the type for the + /// given node type. e.g. On x86 i16 is legal, but undesirable since i16 + /// instruction encodings are longer and some i16 instructions are slow. + virtual bool isTypeDesirableForOp(unsigned Opc, EVT VT) const; + + /// isTypeDesirable - Return true if the target has native support for the + /// specified value type and it is 'desirable' to use the type. e.g. On x86 + /// i16 is legal, but undesirable since i16 instruction encodings are longer + /// and some i16 instructions are slow. + virtual bool IsDesirableToPromoteOp(SDValue Op, EVT &PVT) const; virtual MachineBasicBlock *EmitInstrWithCustomInserter(MachineInstr *MI, MachineBasicBlock *MBB, |