diff options
| -rw-r--r-- | lib/Target/R600/R600InstrInfo.cpp | 12 | ||||
| -rw-r--r-- | lib/Target/R600/R600InstrInfo.h | 2 |
2 files changed, 14 insertions, 0 deletions
diff --git a/lib/Target/R600/R600InstrInfo.cpp b/lib/Target/R600/R600InstrInfo.cpp index 1f47416..c0827fc 100644 --- a/lib/Target/R600/R600InstrInfo.cpp +++ b/lib/Target/R600/R600InstrInfo.cpp @@ -77,6 +77,18 @@ R600InstrInfo::copyPhysReg(MachineBasicBlock &MBB, } } +/// \returns true if \p MBBI can be moved into a new basic. +bool R600InstrInfo::isLegalToSplitMBBAt(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MBBI) const { + for (MachineInstr::const_mop_iterator I = MBBI->operands_begin(), + E = MBBI->operands_end(); I != E; ++I) { + if (I->isReg() && !TargetRegisterInfo::isVirtualRegister(I->getReg()) && + I->isUse() && RI.isPhysRegLiveAcrossClauses(I->getReg())) + return false; + } + return true; +} + unsigned R600InstrInfo::getIEQOpcode() const { return AMDGPU::SETE_INT; } diff --git a/lib/Target/R600/R600InstrInfo.h b/lib/Target/R600/R600InstrInfo.h index b29b91f..13d9810 100644 --- a/lib/Target/R600/R600InstrInfo.h +++ b/lib/Target/R600/R600InstrInfo.h @@ -55,6 +55,8 @@ namespace llvm { MachineBasicBlock::iterator MI, DebugLoc DL, unsigned DestReg, unsigned SrcReg, bool KillSrc) const; + bool isLegalToSplitMBBAt(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MBBI) const; bool isTrig(const MachineInstr &MI) const; bool isPlaceHolderOpcode(unsigned opcode) const; |