diff options
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/RegAllocLocal.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/RegAllocLocal.cpp b/llvm/lib/CodeGen/RegAllocLocal.cpp index 8e7c1fe2a02..5b9186dbe35 100644 --- a/llvm/lib/CodeGen/RegAllocLocal.cpp +++ b/llvm/lib/CodeGen/RegAllocLocal.cpp @@ -580,6 +580,9 @@ void RA::AllocateBasicBlock(MachineBasicBlock &MBB) { unsigned &PhysRegSlot = getVirt2PhysRegMapSlot(VirtReg); PhysReg = PhysRegSlot; PhysRegSlot = 0; + } else if (PhysRegsUsed[PhysReg] == -2) { + // Unallocatable register dead, ignore. + continue; } if (PhysReg) { @@ -669,6 +672,9 @@ void RA::AllocateBasicBlock(MachineBasicBlock &MBB) { PhysReg = PhysRegSlot; assert(PhysReg != 0); PhysRegSlot = 0; + } else if (PhysRegsUsed[PhysReg] == -2) { + // Unallocatable register dead, ignore. + continue; } if (PhysReg) { |
