diff options
| -rw-r--r-- | lib/CodeGen/VirtRegMap.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/VirtRegMap.cpp b/lib/CodeGen/VirtRegMap.cpp index 1a78db7107..35834aa205 100644 --- a/lib/CodeGen/VirtRegMap.cpp +++ b/lib/CodeGen/VirtRegMap.cpp @@ -112,6 +112,9 @@ void VirtRegMap::rewrite(SlotIndexes *Indexes) { SmallVector<unsigned, 8> SuperDeads; SmallVector<unsigned, 8> SuperDefs; SmallVector<unsigned, 8> SuperKills; +#ifndef NDEBUG + BitVector Reserved = TRI->getReservedRegs(*MF); +#endif for (MachineFunction::iterator MBBI = MF->begin(), MBBE = MF->end(); MBBI != MBBE; ++MBBI) { @@ -129,6 +132,7 @@ void VirtRegMap::rewrite(SlotIndexes *Indexes) { unsigned VirtReg = MO.getReg(); unsigned PhysReg = getPhys(VirtReg); assert(PhysReg != NO_PHYS_REG && "Instruction uses unmapped VirtReg"); + assert(!Reserved.test(PhysReg) && "Reserved register assignment"); // Preserve semantics of sub-register operands. if (MO.getSubReg()) { |