diff options
Diffstat (limited to 'lib/CodeGen/RegAllocBase.cpp')
| -rw-r--r-- | lib/CodeGen/RegAllocBase.cpp | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/lib/CodeGen/RegAllocBase.cpp b/lib/CodeGen/RegAllocBase.cpp index a7b7a9f8ab15..7b4fbace2c1c 100644 --- a/lib/CodeGen/RegAllocBase.cpp +++ b/lib/CodeGen/RegAllocBase.cpp @@ -133,18 +133,19 @@ void RegAllocBase::allocatePhysRegs() { if (AvailablePhysReg) Matrix->assign(*VirtReg, AvailablePhysReg); - for (VirtRegVec::iterator I = SplitVRegs.begin(), E = SplitVRegs.end(); - I != E; ++I) { - LiveInterval *SplitVirtReg = &LIS->getInterval(*I); + for (unsigned Reg : SplitVRegs) { + assert(LIS->hasInterval(Reg)); + + LiveInterval *SplitVirtReg = &LIS->getInterval(Reg); assert(!VRM->hasPhys(SplitVirtReg->reg) && "Register already assigned"); if (MRI->reg_nodbg_empty(SplitVirtReg->reg)) { + assert(SplitVirtReg->empty() && "Non-empty but used interval"); DEBUG(dbgs() << "not queueing unused " << *SplitVirtReg << '\n'); aboutToRemoveInterval(*SplitVirtReg); LIS->removeInterval(SplitVirtReg->reg); continue; } DEBUG(dbgs() << "queuing new interval: " << *SplitVirtReg << "\n"); - assert(!SplitVirtReg->empty() && "expecting non-empty interval"); assert(TargetRegisterInfo::isVirtualRegister(SplitVirtReg->reg) && "expect split value in virtual register"); enqueue(SplitVirtReg); |