Create a new branch_weights metadata node and add or overwrite a prof metadata reference to instruction I.
Declared in <llvm/IR/ProfDataUtils.h>
void
setBranchWeights(
Instruction& I,
ArrayRef<uint32_t> Weights,
bool IsExpected,
bool ElideAllZero = false);| Name | Description |
|---|---|
| I | the Instruction to set branch weights on. |
| Weights | an array of weights to set on instruction I. |
| IsExpected | were these weights added from an llvm.expect* intrinsic. |
| ElideAllZero | if true, drop profile metadata when all weights are zero. |