diff options
| -rw-r--r-- | lib/Target/ARM/ARMBaseRegisterInfo.cpp | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/lib/Target/ARM/ARMBaseRegisterInfo.cpp b/lib/Target/ARM/ARMBaseRegisterInfo.cpp index 29b8fd4307..31439b4a26 100644 --- a/lib/Target/ARM/ARMBaseRegisterInfo.cpp +++ b/lib/Target/ARM/ARMBaseRegisterInfo.cpp @@ -723,6 +723,19 @@ ARMBaseRegisterInfo::estimateRSStackSizeLimit(MachineFunction &MF) const { return Limit; } +static unsigned GetFunctionSizeInBytes(const MachineFunction &MF, + const ARMBaseInstrInfo &TII) { + unsigned FnSize = 0; + for (MachineFunction::const_iterator MBBI = MF.begin(), E = MF.end(); + MBBI != E; ++MBBI) { + const MachineBasicBlock &MBB = *MBBI; + for (MachineBasicBlock::const_iterator I = MBB.begin(),E = MBB.end(); + I != E; ++I) + FnSize += TII.GetInstSizeInBytes(I); + } + return FnSize; +} + void ARMBaseRegisterInfo::processFunctionBeforeCalleeSavedScan(MachineFunction &MF, RegScavenger *RS) const { @@ -820,7 +833,7 @@ ARMBaseRegisterInfo::processFunctionBeforeCalleeSavedScan(MachineFunction &MF, bool ForceLRSpill = false; if (!LRSpilled && AFI->isThumb1OnlyFunction()) { - unsigned FnSize = TII.GetFunctionSizeInBytes(MF); + unsigned FnSize = GetFunctionSizeInBytes(MF, TII); // Force LR to be spilled if the Thumb function size is > 2048. This enables // use of BL to implement far jump. If it turns out that it's not needed // then the branch fix up path will undo it. |