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[CodeGen] Remove unused function isRegLiveInExitBlocks (NFC)

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The last use was removed on Jan 17, 2020 in commit
42350cd893a9cf6c199b17441dc2ba526c7cca71.
This commit is contained in:
Kazu Hirata 2021-01-12 21:43:48 -08:00
parent dfbe37a54f
commit 42b5b228d1
2 changed files with 0 additions and 15 deletions
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4
include/llvm/CodeGen/MachineLoopUtils.h
View File

@ -37,10 +37,6 @@ MachineBasicBlock *PeelSingleBlockLoop(LoopPeelDirection Direction,
MachineRegisterInfo &MRI,
const TargetInstrInfo *TII);
/// Return true if PhysReg is live outside the loop, i.e. determine if it
/// is live in the loop exit blocks, and false otherwise.
bool isRegLiveInExitBlocks(MachineLoop *Loop, int PhysReg);
} // namespace llvm
#endif // LLVM_LIB_CODEGEN_MACHINELOOPUTILS_H

11
lib/CodeGen/MachineLoopUtils.cpp
View File

@ -130,14 +130,3 @@ MachineBasicBlock *llvm::PeelSingleBlockLoop(LoopPeelDirection Direction,
return NewBB;
}
bool llvm::isRegLiveInExitBlocks(MachineLoop *Loop, int PhysReg) {
SmallVector<MachineBasicBlock *, 4> ExitBlocks;
Loop->getExitBlocks(ExitBlocks);
for (auto *MBB : ExitBlocks)
if (MBB->isLiveIn(PhysReg))
return true;
return false;
}