Auto merge of #115105 - cjgillot:dest-prop-default, r=oli-obk

Enable DestinationPropagation by default.

~~Based on https://github.com/rust-lang/rust/pull/115291.~~

This PR proposes to enable the destination propagation pass by default.
This pass is meant to reduce the amount of copies present in MIR.

At the same time, this PR removes the `RenameReturnPlace` pass, as it is currently unsound.
`DestinationPropagation` is not limited to `_0`, but does not handle borrowed locals.

compiler/rustc_mir_transform/src/lib.rs

@@ -88,7 +88,6 @@ mod match_branches;
 mod mentioned_items;
 mod multiple_return_terminators;
 mod normalize_array_len;
-mod nrvo;
 mod prettify;
 mod promote_consts;
 mod ref_prop;
@@ -608,13 +607,12 @@ fn run_optimization_passes<'tcx>(tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {
             &jump_threading::JumpThreading,
             &early_otherwise_branch::EarlyOtherwiseBranch,
             &simplify_comparison_integral::SimplifyComparisonIntegral,
-            &dest_prop::DestinationPropagation,
             &o1(simplify_branches::SimplifyConstCondition::Final),
             &o1(remove_noop_landing_pads::RemoveNoopLandingPads),
             &o1(simplify::SimplifyCfg::Final),
             &copy_prop::CopyProp,
             &dead_store_elimination::DeadStoreElimination::Final,
-            &nrvo::RenameReturnPlace,
+            &dest_prop::DestinationPropagation,
             &simplify::SimplifyLocals::Final,
             &multiple_return_terminators::MultipleReturnTerminators,
             &deduplicate_blocks::DeduplicateBlocks,