diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2019-10-23 17:51:42 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2019-10-23 17:51:42 +0000 |
| commit | 1d5ae1026e831016fc29fd927877c86af904481f (patch) | |
| tree | 2cdfd12620fcfa5d9e4a0389f85368e8e36f63f9 /lib/Target/ARM/ARMFrameLowering.h | |
| parent | e6d1592492a3a379186bfb02bd0f4eda0669c0d5 (diff) | |
Diffstat (limited to 'lib/Target/ARM/ARMFrameLowering.h')
| -rw-r--r-- | lib/Target/ARM/ARMFrameLowering.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Target/ARM/ARMFrameLowering.h b/lib/Target/ARM/ARMFrameLowering.h index 7544ca3c38d6..6d8aee597945 100644 --- a/lib/Target/ARM/ARMFrameLowering.h +++ b/lib/Target/ARM/ARMFrameLowering.h @@ -63,6 +63,11 @@ public: bool enableShrinkWrapping(const MachineFunction &MF) const override { return true; } + bool isProfitableForNoCSROpt(const Function &F) const override { + // The no-CSR optimisation is bad for code size on ARM, because we can save + // many registers with a single PUSH/POP pair. + return false; + } private: void emitPushInst(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, |