Commit 0d0f4eac8b98133e5da6d3604d86a8f3b5a67844 | rust

Optimize Cargo with LTO

This optimization was "lost" when Cargo was switched away from a `ToolRustcPrivate` to a `ToolTarget` tool.

r? `@jieyouxu`

1 files changed, 4 insertions(+), 2 deletions(-)

src/bootstrap/src/core/build_steps/tool.rs+4-2

...	...	@@ -121,9 +121,11 @@ impl Step for ToolBuild {
121	121	cargo.env("RUSTC_WRAPPER", ccache);
122	122	}
123	123
124		// Rustc tools (miri, clippy, cargo, rustfmt, rust-analyzer)
	124	// RustcPrivate tools (miri, clippy, rustfmt, rust-analyzer) and cargo
125	125	// could use the additional optimizations.
126		if self.mode == Mode::ToolRustcPrivate && is_lto_stage(&self.build_compiler) {
	126	if is_lto_stage(&self.build_compiler)
	127	&& (self.mode == Mode::ToolRustcPrivate \|\| self.path == "src/tools/cargo")
	128	{
127	129	let lto = match builder.config.rust_lto {
128	130	RustcLto::Off => Some("off"),
129	131	RustcLto::Thin => Some("thin"),