RegionDescPtr selectHotCFG(HotTransContext& ctx,
TransIDSet& selectedSet,
TransIDVec* selectedVec /* = nullptr */) {
ITRACE(1, "selectHotCFG: starting with maxBCInstrs = {}\n", ctx.maxBCInstrs);
auto const region =
DFS(ctx.profData, *ctx.cfg, selectedSet, selectedVec, ctx.maxBCInstrs,
ctx.inlining)
.formRegion(ctx.tid);
if (region->empty()) return nullptr;
ITRACE(3, "selectHotCFG: before region_prune_arcs:\n{}\n",
show(*region));
region_prune_arcs(*region, ctx.inputTypes);
ITRACE(3, "selectHotCFG: before chainRetransBlocks:\n{}\n",
show(*region));
region->chainRetransBlocks();
// Relax the region guards.
if (RuntimeOption::EvalRegionRelaxGuards) {
ITRACE(3, "selectHotCFG: before optimizeProfiledGuards:\n{}\n",
show(*region));
optimizeProfiledGuards(*region, *ctx.profData);
}
ITRACE(1, "selectHotCFG: final version after optimizeProfiledGuards:\n{}\n",
show(*region));
return region;
}
RegionDescPtr selectHotCFG(TransID head,
const ProfData* profData,
const TransCFG& cfg,
TransIDSet& selectedSet,
TransIDVec* selectedVec) {
FTRACE(1, "selectHotCFG\n");
auto const region =
DFS(profData, cfg, selectedSet, selectedVec)
.formRegion(head);
FTRACE(3, "selectHotCFG: before region_prune_arcs:\n{}\n",
show(*region));
region_prune_arcs(*region);
FTRACE(3, "selectHotCFG: before chainRetransBlocks:\n{}\n",
show(*region));
region->chainRetransBlocks();
FTRACE(3, "selectHotCFG: after chainRetransBlocks:\n{}\n",
show(*region));
return region;
}
