diff options
Diffstat (limited to 'lib/CodeGen/RegAllocLinearScan.cpp')
| -rw-r--r-- | lib/CodeGen/RegAllocLinearScan.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/CodeGen/RegAllocLinearScan.cpp b/lib/CodeGen/RegAllocLinearScan.cpp index 0818034c15..7a2ea6c408 100644 --- a/lib/CodeGen/RegAllocLinearScan.cpp +++ b/lib/CodeGen/RegAllocLinearScan.cpp @@ -1440,8 +1440,12 @@ unsigned RALinScan::getFreePhysReg(LiveInterval* cur, if (TargetRegisterInfo::isVirtualRegister(physReg) && vrm_->hasPhys(physReg)) physReg = vrm_->getPhys(physReg); - ArrayRef<unsigned> Order = tri_->getRawAllocationOrder(RC, Hint.first, - physReg, *mf_); + ArrayRef<unsigned> Order; + if (Hint.first) + Order = tri_->getRawAllocationOrder(RC, Hint.first, physReg, *mf_); + else + Order = RegClassInfo.getOrder(RC); + assert(!Order.empty() && "No allocatable register in this register class!"); // Scan for the first available register. |