bors fa1681c9f6 Auto merge of #125910 - scottmcm:single-use-consts, r=saethlin ... Add `SingleUseConsts` mir-opt pass The goal here is to make a pass that can be run in debug builds to simplify the common case of constants that are used just once -- that doesn't need SSA handling and avoids any potential downside of multi-use constants. In particular, to simplify the `if T::IS_ZST` pattern that's common in the standard library. By also handling the case of constants that are *never* actually used this fully replaces the `ConstDebugInfo` pass, since it has all the information needed to do that naturally from the traversal it needs to do anyway. This is roughly a wash on instructions on its own (a couple regressions, a few improvements https://github.com/rust-lang/rust/pull/125910#issuecomment-2144963361), with a bunch of size improvements. So I'd like to land it as its own PR, then do follow-ups to take more advantage of it (in the inliner, cg_ssa, etc). r? `@saethlin`		2024-06-11 02:03:12 +00:00
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src	Auto merge of #125910 - scottmcm:single-use-consts, r=saethlin	2024-06-11 02:03:12 +00:00
Cargo.toml	compiler: const_eval/transform/validate.rs -> mir_transform/validate.rs	2024-05-24 09:56:56 -07:00
messages.ftl	Remove MIR unsafe check	2024-04-03 08:50:12 +00:00