diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2020-01-24 22:00:03 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2020-01-24 22:00:03 +0000 |
| commit | 480093f4440d54b30b3025afeac24b48f2ba7a2e (patch) | |
| tree | 162e72994062888647caf0d875428db9445491a8 /contrib/llvm-project/llvm/lib/CodeGen/MachineLoopUtils.cpp | |
| parent | 489b1cf2ecf5b9b4a394857987014bfb09067726 (diff) | |
| parent | 706b4fc47bbc608932d3b491ae19a3b9cde9497b (diff) | |
Notes
Diffstat (limited to 'contrib/llvm-project/llvm/lib/CodeGen/MachineLoopUtils.cpp')
| -rw-r--r-- | contrib/llvm-project/llvm/lib/CodeGen/MachineLoopUtils.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/CodeGen/MachineLoopUtils.cpp b/contrib/llvm-project/llvm/lib/CodeGen/MachineLoopUtils.cpp index e074b76082f0..cf30e28449cd 100644 --- a/contrib/llvm-project/llvm/lib/CodeGen/MachineLoopUtils.cpp +++ b/contrib/llvm-project/llvm/lib/CodeGen/MachineLoopUtils.cpp @@ -6,6 +6,7 @@ // //===----------------------------------------------------------------------===// +#include "llvm/CodeGen/MachineLoopInfo.h" #include "llvm/CodeGen/MachineLoopUtils.h" #include "llvm/CodeGen/MachineBasicBlock.h" #include "llvm/CodeGen/MachineRegisterInfo.h" @@ -130,3 +131,14 @@ 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; +} |