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| author | Jonas Paulsson <paulsson@linux.vnet.ibm.com> | 2018-01-31 09:26:51 +0000 |
|---|---|---|
| committer | Jonas Paulsson <paulsson@linux.vnet.ibm.com> | 2018-01-31 09:26:51 +0000 |
| commit | e6a8329e9fe72a83f0be2b5cef5a563957406773 (patch) | |
| tree | 48c7e961af408fedb6e772bac3f0e4e4fe49d3bd /llvm/lib/Target/PowerPC/PPCRegisterInfo.h | |
| parent | aea4208720f2d98c908acf293819dd33f29b0465 (diff) | |
| download | bcm5719-llvm-e6a8329e9fe72a83f0be2b5cef5a563957406773.tar.gz bcm5719-llvm-e6a8329e9fe72a83f0be2b5cef5a563957406773.zip | |
[PowerPC] Return true in enableMultipleCopyHints().
Enable multiple COPY hints to eliminate more COPYs during register allocation.
Note that this is something all targets should do, see
https://reviews.llvm.org/D38128.
Review: Nemanja Ivanovic
llvm-svn: 323858
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCRegisterInfo.h')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCRegisterInfo.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCRegisterInfo.h b/llvm/lib/Target/PowerPC/PPCRegisterInfo.h index 0bbb71fdf9f..91a98ee4efc 100644 --- a/llvm/lib/Target/PowerPC/PPCRegisterInfo.h +++ b/llvm/lib/Target/PowerPC/PPCRegisterInfo.h @@ -85,6 +85,8 @@ public: BitVector getReservedRegs(const MachineFunction &MF) const override; bool isCallerPreservedPhysReg(unsigned PhysReg, const MachineFunction &MF) const override; + bool enableMultipleCopyHints() const override { return true; } + /// We require the register scavenger. bool requiresRegisterScavenging(const MachineFunction &MF) const override { return true; |
