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Allow merging of statics generated by format!() #15871

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Merged
merged 1 commit into from
Jul 22, 2014
Merged

Allow merging of statics generated by format!() #15871

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7 changes: 6 additions & 1 deletion src/libsyntax/ext/format.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -316,14 +316,19 @@ impl<'a, 'b> Context<'a, 'b> {
/// These attributes are applied to all statics that this syntax extension
/// will generate.
fn static_attrs(&self) -> Vec<ast::Attribute> {
// Flag statics as `inline` so LLVM can merge duplicate globals as much
// as possible (which we're generating a whole lot of).
let unnamed = self.ecx.meta_word(self.fmtsp, InternedString::new("inline"));
let unnamed = self.ecx.attribute(self.fmtsp, unnamed);

// Do not warn format string as dead code
let dead_code = self.ecx.meta_word(self.fmtsp,
InternedString::new("dead_code"));
let allow_dead_code = self.ecx.meta_list(self.fmtsp,
InternedString::new("allow"),
vec!(dead_code));
let allow_dead_code = self.ecx.attribute(self.fmtsp, allow_dead_code);
return vec!(allow_dead_code);
return vec!(unnamed, allow_dead_code);
}

fn rtpath(&self, s: &str) -> Vec<ast::Ident> {
Expand Down