6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-24 08:24:33 +00:00
Code Issues Projects Releases Wiki Activity

Implement support for inserting an instruction into a basic block right when it

Browse Source 
is created.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3651 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2002-09-10 15:36:11 +00:00
parent 74493a4c6e
commit 3a8b0f00e6
6 changed files with 79 additions and 69 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
include/llvm/iPHINode.h
View File

@ -21,26 +21,30 @@ class BasicBlock;
class PHINode : public Instruction {
PHINode(const PHINode &PN);
public:
PHINode(const Type *Ty, const std::string &Name = "");
PHINode(const Type *Ty, const std::string &Name = "",
Instruction *InsertBefore = 0)
: Instruction(Ty, Instruction::PHINode, Name, InsertBefore) {
}
virtual Instruction *clone() const { return new PHINode(*this); }
// getNumIncomingValues - Return the number of incoming edges the PHI node has
inline unsigned getNumIncomingValues() const { return Operands.size()/2; }
/// getNumIncomingValues - Return the number of incoming edges the PHI node
/// has
unsigned getNumIncomingValues() const { return Operands.size()/2; }
// getIncomingValue - Return incoming value #x
inline const Value *getIncomingValue(unsigned i) const {
/// getIncomingValue - Return incoming value #x
const Value *getIncomingValue(unsigned i) const {
return Operands[i*2];
}
inline Value *getIncomingValue(unsigned i) {
Value *getIncomingValue(unsigned i) {
return Operands[i*2];
}
inline void setIncomingValue(unsigned i, Value *V) {
void setIncomingValue(unsigned i, Value *V) {
Operands[i*2] = V;
}
// getIncomingBlock - Return incoming basic block #x
inline const BasicBlock *getIncomingBlock(unsigned i) const {
/// getIncomingBlock - Return incoming basic block #x
const BasicBlock *getIncomingBlock(unsigned i) const {
return (const BasicBlock*)Operands[i*2+1].get();
}
inline BasicBlock *getIncomingBlock(unsigned i) {
@ -50,23 +54,23 @@ public:
Operands[i*2+1] = (Value*)BB;
}
// addIncoming - Add an incoming value to the end of the PHI list
/// addIncoming - Add an incoming value to the end of the PHI list
void addIncoming(Value *D, BasicBlock *BB);
// removeIncomingValue - Remove an incoming value. This is useful if a
// predecessor basic block is deleted. The value removed is returned.
/// removeIncomingValue - Remove an incoming value. This is useful if a
/// predecessor basic block is deleted. The value removed is returned.
Value *removeIncomingValue(const BasicBlock *BB);
// getBasicBlockIndex - Return the first index of the specified basic
// block in the value list for this PHI. Returns -1 if no instance.
//
/// getBasicBlockIndex - Return the first index of the specified basic
/// block in the value list for this PHI. Returns -1 if no instance.
///
int getBasicBlockIndex(const BasicBlock *BB) const {
for (unsigned i = 0; i < Operands.size()/2; ++i)
if (getIncomingBlock(i) == BB) return i;
return -1;
}
// Methods for support type inquiry through isa, cast, and dyn_cast:
/// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const PHINode *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::PHINode;