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Auto merge of #117206 - cjgillot:jump-threading-default, r=tmiasko

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Enable MIR JumpThreading by default

Mostly for perf

r? `@ghost`
This commit is contained in:
bors 2024-02-10 22:15:18 +00:00
commit 42752cbe09
27 changed files with 495 additions and 1315 deletions
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7
compiler/rustc_mir_transform/src/lib.rs
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@ -59,7 +59,6 @@ mod remove_place_mention;
mod add_subtyping_projections;
pub mod cleanup_post_borrowck;
mod const_debuginfo;
mod const_goto;
mod const_prop;
mod const_prop_lint;
mod copy_prop;
@ -103,7 +102,6 @@ mod remove_unneeded_drops;
mod remove_zsts;
mod required_consts;
mod reveal_all;
mod separate_const_switch;
mod shim;
mod ssa;
// This pass is public to allow external drivers to perform MIR cleanup
@ -590,7 +588,6 @@ fn run_optimization_passes<'tcx>(tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {
// Has to run after `slice::len` lowering
&normalize_array_len::NormalizeArrayLen,
&const_goto::ConstGoto,
&ref_prop::ReferencePropagation,
&sroa::ScalarReplacementOfAggregates,
&match_branches::MatchBranchSimplification,
@ -601,10 +598,6 @@ fn run_optimization_passes<'tcx>(tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {
&dead_store_elimination::DeadStoreElimination::Initial,
&gvn::GVN,
&simplify::SimplifyLocals::AfterGVN,
// Perform `SeparateConstSwitch` after SSA-based analyses, as cloning blocks may
// destroy the SSA property. It should still happen before const-propagation, so the
// latter pass will leverage the created opportunities.
&separate_const_switch::SeparateConstSwitch,
&dataflow_const_prop::DataflowConstProp,
&const_debuginfo::ConstDebugInfo,
&o1(simplify_branches::SimplifyConstCondition::AfterConstProp),