// Instruction creation methods: Terminators
//===--------------------------------------------------------------------===//
+private:
+ /// \brief Helper to add branch weight metadata onto an instruction.
+ /// \returns The annotated instruction.
+ template <typename InstTy>
+ InstTy *addBranchWeights(InstTy *I, MDNode *Weights) {
+ if (Weights)
+ I->setMetadata(LLVMContext::MD_prof, Weights);
+ return I;
+ }
+
+public:
/// CreateRetVoid - Create a 'ret void' instruction.
ReturnInst *CreateRetVoid() {
return Insert(ReturnInst::Create(Context));
/// CreateCondBr - Create a conditional 'br Cond, TrueDest, FalseDest'
/// instruction.
- BranchInst *CreateCondBr(Value *Cond, BasicBlock *True, BasicBlock *False) {
- return Insert(BranchInst::Create(True, False, Cond));
+ BranchInst *CreateCondBr(Value *Cond, BasicBlock *True, BasicBlock *False,
+ MDNode *BranchWeights = 0) {
+ return Insert(addBranchWeights(BranchInst::Create(True, False, Cond),
+ BranchWeights));
}
/// CreateSwitch - Create a switch instruction with the specified value,
/// default dest, and with a hint for the number of cases that will be added
/// (for efficient allocation).
- SwitchInst *CreateSwitch(Value *V, BasicBlock *Dest, unsigned NumCases = 10) {
- return Insert(SwitchInst::Create(V, Dest, NumCases));
+ SwitchInst *CreateSwitch(Value *V, BasicBlock *Dest, unsigned NumCases = 10,
+ MDNode *BranchWeights = 0) {
+ return Insert(addBranchWeights(SwitchInst::Create(V, Dest, NumCases),
+ BranchWeights));
}
/// CreateIndirectBr - Create an indirect branch instruction with the