-// ReplaceInstWithInst - Replace the instruction specified by BI with the
-// instruction specified by I. The original instruction is deleted and BI is
-// updated to point to the new instruction.
-//
-void ReplaceInstWithInst(BasicBlock::InstListType &BIL,
- BasicBlock::iterator &BI, Instruction *I) {
- assert(I->getParent() == 0 &&
- "ReplaceInstWithInst: Instruction already inserted into basic block!");
-
- // Insert the new instruction into the basic block...
- BI = BIL.insert(BI, I)+1; // Increment BI to point to instruction to delete
-
- // Replace all uses of the old instruction, and delete it.
- ReplaceInstWithValue(BIL, BI, I);
-
- // Move BI back to point to the newly inserted instruction
- --BI;
-}
-
-void ReplaceInstWithInst(Instruction *From, Instruction *To) {
- BasicBlock *BB = From->getParent();
- BasicBlock::InstListType &BIL = BB->getInstList();
- BasicBlock::iterator BI = find(BIL.begin(), BIL.end(), From);
- assert(BI != BIL.end() && "Inst not in it's parents BB!");
- ReplaceInstWithInst(BIL, BI, To);
-}
-
-// InsertInstBeforeInst - Insert 'NewInst' into the basic block that 'Existing'
-// is already in, and put it right before 'Existing'. This instruction should
-// only be used when there is no iterator to Existing already around. The
-// returned iterator points to the new instruction.
-//
-BasicBlock::iterator InsertInstBeforeInst(Instruction *NewInst,
- Instruction *Existing) {
- BasicBlock *BB = Existing->getParent();
- BasicBlock::InstListType &BIL = BB->getInstList();
- BasicBlock::iterator BI = find(BIL.begin(), BIL.end(), Existing);
- assert(BI != BIL.end() && "Inst not in it's parents BB!");
- return BIL.insert(BI, NewInst);
-}
-
-
-
-static const Type *getStructOffsetStep(const StructType *STy, unsigned &Offset,