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[beta] Turn back on "fat" LTO by default #47548

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Jan 21, 2018
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[beta] Turn back on "fat" LTO by default #47548

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12 changes: 9 additions & 3 deletions src/librustc/session/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -807,9 +807,15 @@ impl Session {
return enabled
}

// If there's only one codegen unit and LTO isn't enabled then there's
// no need for ThinLTO so just return false.
if self.codegen_units() == 1 && !self.lto() {
// If LTO is enabled we right now unconditionally disable ThinLTO.
// This'll come at a later date! (full crate graph ThinLTO)
if self.lto() {
return false
}

// If there's only one codegen unit or then there's no need for ThinLTO
// so just return false.
if self.codegen_units() == 1 {
return false
}

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