diff options
| author | Matthias Braun <matze@braunis.de> | 2015-07-14 17:17:13 +0000 |
|---|---|---|
| committer | Matthias Braun <matze@braunis.de> | 2015-07-14 17:17:13 +0000 |
| commit | 02564865328fcd3ad83192044e8d6b7a2c802395 (patch) | |
| tree | 7b8e13e24bf99ec8f070dfed1bc1486174d0b93d /llvm/lib/Target/SystemZ/SystemZFrameLowering.h | |
| parent | c962d4f28bf0003ca315fb8fe267c5ade537a520 (diff) | |
| download | bcm5719-llvm-02564865328fcd3ad83192044e8d6b7a2c802395.tar.gz bcm5719-llvm-02564865328fcd3ad83192044e8d6b7a2c802395.zip | |
PrologEpilogInserter: Rewrite API to determine callee save regsiters.
This changes TargetFrameLowering::processFunctionBeforeCalleeSavedScan():
- Rename the function to determineCalleeSaves()
- Pass a bitset of callee saved registers by reference, thus avoiding
the function-global PhysRegUsed bitset in MachineRegisterInfo.
- Without PhysRegUsed the implementation is fine tuned to not save
physcial registers which are only read but never modified.
Related to rdar://21539507
Differential Revision: http://reviews.llvm.org/D10909
llvm-svn: 242165
Diffstat (limited to 'llvm/lib/Target/SystemZ/SystemZFrameLowering.h')
| -rw-r--r-- | llvm/lib/Target/SystemZ/SystemZFrameLowering.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/Target/SystemZ/SystemZFrameLowering.h b/llvm/lib/Target/SystemZ/SystemZFrameLowering.h index 60bad894ee4..5ade757f17f 100644 --- a/llvm/lib/Target/SystemZ/SystemZFrameLowering.h +++ b/llvm/lib/Target/SystemZ/SystemZFrameLowering.h @@ -27,8 +27,8 @@ public: bool isFPCloseToIncomingSP() const override { return false; } const SpillSlot *getCalleeSavedSpillSlots(unsigned &NumEntries) const override; - void processFunctionBeforeCalleeSavedScan(MachineFunction &MF, - RegScavenger *RS) const override; + void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, + RegScavenger *RS) const override; bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, const std::vector<CalleeSavedInfo> &CSI, |
