diff options
Diffstat (limited to 'include/llvm/MC/MCInstrDesc.h')
| -rw-r--r-- | include/llvm/MC/MCInstrDesc.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/include/llvm/MC/MCInstrDesc.h b/include/llvm/MC/MCInstrDesc.h index 5896de7..101778e 100644 --- a/include/llvm/MC/MCInstrDesc.h +++ b/include/llvm/MC/MCInstrDesc.h @@ -451,9 +451,12 @@ public: } /// isRematerializable - Returns true if this instruction is a candidate for - /// remat. This flag is deprecated, please don't use it anymore. If this - /// flag is set, the isReallyTriviallyReMaterializable() method is called to - /// verify the instruction is really rematable. + /// remat. This flag is only used in TargetInstrInfo method + /// isTriviallyRematerializable. + /// + /// If this flag is set, the isReallyTriviallyReMaterializable() + /// or isReallyTriviallyReMaterializableGeneric methods are called to verify + /// the instruction is really rematable. bool isRematerializable() const { return Flags & (1 << MCID::Rematerializable); } @@ -464,6 +467,9 @@ public: /// where we would like to remat or hoist the instruction, but not if it costs /// more than moving the instruction into the appropriate register. Note, we /// are not marking copies from and to the same register class with this flag. + /// + /// This method could be called by interface TargetInstrInfo::isAsCheapAsAMove + /// for different subtargets. bool isAsCheapAsAMove() const { return Flags & (1 << MCID::CheapAsAMove); } |