https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86895
Bug ID: 86895 Summary: Wrong description of -fvect-cost-model in common.opt Product: gcc Version: 8.2.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: niva at niisi dot msk.ru Target Milestone: --- gcc --help -v prints the following: Specifies the cost model for vectorization. -fvect-cost-model=[unlimited|dynamic|cheap] Specifies the cost model for vectorization. I think that this results from the defect in gcc/common.opt: fvect-cost-model= Common Joined RejectNegative Enum(vect_cost_model) Var(flag_vect_cost_model) Init(VECT_COST_MODEL_DEFAULT) Optimization Specifies the cost model for vectorization. -fvect-cost-model=[unlimited|dynamic|cheap] Specifies the cost model for vectorization.