diff options
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/LiveIntervalAnalysis.cpp | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp index 85ff1c182d..29c095a1aa 100644 --- a/lib/CodeGen/LiveIntervalAnalysis.cpp +++ b/lib/CodeGen/LiveIntervalAnalysis.cpp @@ -658,14 +658,15 @@ void LiveIntervals::handleRegisterDef(MachineBasicBlock *MBB, } void LiveIntervals::handleLiveInRegister(MachineBasicBlock *MBB, + unsigned MIIdx, LiveInterval &interval) { DOUT << "\t\tlivein register: "; DEBUG(printRegName(interval.reg)); // Look for kills, if it reaches a def before it's killed, then it shouldn't // be considered a livein. MachineBasicBlock::iterator mi = MBB->begin(); - unsigned baseIndex = 0; - unsigned start = 0; + unsigned baseIndex = MIIdx; + unsigned start = baseIndex; unsigned end = start; while (mi != MBB->end()) { if (lv_->KillsRegister(mi, interval.reg)) { @@ -690,8 +691,8 @@ exit: assert(start < end && "did not find end of interval?"); LiveRange LR(start, end, interval.getNextValue(~0U, 0)); - interval.addRange(LR); DOUT << " +" << LR << '\n'; + interval.addRange(LR); } /// computeIntervals - computes the live intervals for virtual @@ -715,9 +716,9 @@ void LiveIntervals::computeIntervals() { // Create intervals for live-ins to this BB first. for (MachineBasicBlock::const_livein_iterator LI = MBB->livein_begin(), LE = MBB->livein_end(); LI != LE; ++LI) { - handleLiveInRegister(MBB, getOrCreateInterval(*LI)); + handleLiveInRegister(MBB, MIIndex, getOrCreateInterval(*LI)); for (const unsigned* AS = mri_->getAliasSet(*LI); *AS; ++AS) - handleLiveInRegister(MBB, getOrCreateInterval(*AS)); + handleLiveInRegister(MBB, MIIndex, getOrCreateInterval(*AS)); } } |