diff options
Diffstat (limited to 'lib/Target')
| -rw-r--r-- | lib/Target/SystemZ/SystemZFrameLowering.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/Target/SystemZ/SystemZFrameLowering.cpp b/lib/Target/SystemZ/SystemZFrameLowering.cpp index 3ae5978..a58da90 100644 --- a/lib/Target/SystemZ/SystemZFrameLowering.cpp +++ b/lib/Target/SystemZ/SystemZFrameLowering.cpp @@ -270,10 +270,14 @@ processFunctionBeforeFrameFinalized(MachineFunction &MF, MachineFrameInfo *MFFrame = MF.getFrameInfo(); uint64_t MaxReach = (MFFrame->estimateStackSize(MF) + SystemZMC::CallFrameSize * 2); - if (!isUInt<12>(MaxReach)) - // We may need a register scavenging slot if some parts of the frame + if (!isUInt<12>(MaxReach)) { + // We may need register scavenging slots if some parts of the frame // are outside the reach of an unsigned 12-bit displacement. + // Create 2 for the case where both addresses in an MVC are + // out of range. RS->addScavengingFrameIndex(MFFrame->CreateStackObject(8, 8, false)); + RS->addScavengingFrameIndex(MFFrame->CreateStackObject(8, 8, false)); + } } // Emit instructions before MBBI (in MBB) to add NumBytes to Reg. |