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-rw-r--r--rust/compiler.go5
1 files changed, 5 insertions, 0 deletions
diff --git a/rust/compiler.go b/rust/compiler.go
index f186ef38f..62e53bf6e 100644
--- a/rust/compiler.go
+++ b/rust/compiler.go
@@ -477,6 +477,11 @@ func (compiler *baseCompiler) compilerFlags(ctx ModuleContext, flags Flags) Flag
}
}
+ // Enable LTO for non-engineering builds if the module supports and requests it.
+ if !ctx.Config().Eng() && !(ctx.RustModule().Rlib() || ctx.RustModule().ProcMacro()) && ctx.RustModule().compiler.Thinlto() {
+ flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C lto=thin")
+ }
+
flags.RustFlags = append(flags.RustFlags, lintFlags)
flags.RustFlags = append(flags.RustFlags, compiler.Properties.Flags...)
flags.RustFlags = append(flags.RustFlags, "--edition="+compiler.edition())