HD 7750, Mesa-git, LLVM 3.5-svn.

Sanctum 2 crashes with a similar error when loading.

417: llvm::SlotIndex llvm::SlotIndexes::getInstructionIndex(const
llvm::MachineInstr*) const: Assertion `itr != mi2iMap.end() && "Instruction not
found in maps."' failed.

Always crashes in the same place, and the same time.