big performance optimization round

Author: onlycs

.cargo/config.toml

@@ -1,2 +1,17 @@
 [env]
 CARGO_WORKSPACE_DIR = { value = "", relative = true }
+CXXFLAGS = "-O2"
+
+[build]
+rustc-wrapper = "sccache"
+rustflags = ["Z", "threads=16"]
+
+[target.x86_64-unknown-linux-gnu]
+linker = "clang"
+rustflags = ["-C", "link-arg=-fuse-ld=mold"]
+
+[unstable]
+codegen-backend = true
+
+[profile.dev]
+codegen-backend = "cranelift"

.envrc

@@ -0,0 +1 @@
+use flake

.gitignore

@@ -1,5 +1,3 @@
 /target
 **/target
 .direnv
-shell.nix
-.envrc