From 020ab827ce9fa37ba6650c355610fd093b3057b1 Mon Sep 17 00:00:00 2001 From: sindoring Date: Sun, 11 Oct 2026 13:09:17 +0400 Subject: [PATCH] Sync upstream build profiles through 710eb8f5 Apply upstream 710eb8f531986b2cafe01471e43e2f8f1c0fced3 on the previously integrated c2fc3cf3 snapshot: disable dev ThinLTO and build dev/play dependencies as one codegen unit. Release and ship profiles, MoonWell integration and ruRU localization remain unchanged. Regenerated MAP has no delta. Verified on Windows: cargo fmt --all -- --check and locked workspace metadata pass; the applied patch matches upstream. Full land gates run before merge. The upstream performance measurements were on macOS; no Windows speedup is claimed. No declared account for live login. --- Cargo.toml | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/Cargo.toml b/Cargo.toml index c046a0b6f..66f9ead1c 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -46,11 +46,19 @@ kira = { path = "third_party/kira" } # Dependencies at opt-level 3 in dev: at opt-level 0, avian/parry collision drops a run to <1 fps. [profile.dev.package."*"] opt-level = 3 +# One codegen unit each, since `lto = "off"` below drops the ThinLTO that inlines across a crate's +# units: at 16 units the dependencies cost +1.2 cpu_ms at the leg pin, at one nothing, and a cold +# build is no slower. +codegen-units = 1 # Our crates at opt-level 1: Bevy's generic hot paths monomorphize into them, and at opt-level 0 -# Stormwind drops from a pinned 60 fps to ~45; the warm incremental rebuild cost is ~0. +# Stormwind drops from a pinned 60 fps to ~45. [profile.dev] opt-level = 1 +# No ThinLTO: above opt-level 0 rustc runs it over a crate's own codegen units by default, and an +# incremental rebuild redoes it whole: 19 s of a one-line `benilla-app` edit's 25 s, and half its +# 5.3 GB. Off, our crates cost +0.7 cpu_ms (+6 %) at the leg pin. +lto = "off" # No debuginfo trimming: `debug = "line-tables-only"` measures no recurring win on macOS + sccache. @@ -71,3 +79,8 @@ incremental = true # Not for speed: under `incremental`, thin-local LTO leaves promoted `anon.*.llvm.*` symbols # unresolved and the link fails intermittently (rustc #86049). lto = "off" + +# One codegen unit each, as in dev: at 16 the dependencies cost +1.2 cpu_ms against `release` at +# the leg pin, at one the profile is +0.5, and a cold build is no slower. +[profile.play.package."*"] +codegen-units = 1 -- 2.52.0