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Add sanity checks 

llvm-svn: 5020
This commit is contained in:
Chris Lattner 2002-12-13 13:04:04 +00:00
parent a1aa29b125
commit f1874b0677
1 changed files with 2 additions and 0 deletions
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2
llvm/lib/Target/X86/InstSelectSimple.cpp
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@ -35,6 +35,7 @@ inline static MachineInstrBuilder BMI(MachineBasicBlock *MBB,
MachineOpCode Opcode,
unsigned NumOperands,
unsigned DestReg) {
assert(I >= MBB->begin() && I <= MBB->end() && "Bad iterator!");
MachineInstr *MI = new MachineInstr(Opcode, NumOperands+1, true, true);
I = ++MBB->insert(I, MI);
return MachineInstrBuilder(MI).addReg(DestReg, MOTy::Def);
@ -46,6 +47,7 @@ inline static MachineInstrBuilder BMI(MachineBasicBlock *MBB,
MachineBasicBlock::iterator &I,
MachineOpCode Opcode,
unsigned NumOperands) {
assert(I > MBB->begin() && I <= MBB->end() && "Bad iterator!");
MachineInstr *MI = new MachineInstr(Opcode, NumOperands, true, true);
I = ++MBB->insert(I, MI);
return MachineInstrBuilder(MI);