Hoist IncV and its required subexpressions before InsertPos.
Declared in <llvm/Transforms/Utils/ScalarEvolutionExpander.h>
bool
hoistIVInc(
Instruction* IncV,
Instruction* InsertPos,
bool RecomputePoisonFlags = false);If RecomputePoisonFlags is set, drops all poison-generating flags from instructions being hoisted and tries to re-infer them in the new location. It should be used when we are going to introduce a new use in the new position that didn't exist before, and may trigger new UB in case of poison.
True if the increment was successfully hoisted.
| Name | Description |
|---|---|
| IncV | Induction-variable increment to hoist. |
| InsertPos | Instruction before which IncV is hoisted. |
| RecomputePoisonFlags | Whether to drop and re-infer poison flags. |