Commit 1d24e80

Hayden602cdzhd

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When compiling with the flag RUSTFLAGS="-Zautodiff=Enable", lto = "fat" is automatically set.

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Original file line number	Diff line number	Diff line change
`@@ -1507,6 +1507,11 @@ impl Options {`
`1507`	`1507`	`pub fn get_symbol_mangling_version(&self) -> SymbolManglingVersion {`
`1508`	`1508`	`self.cg.symbol_mangling_version.unwrap_or(SymbolManglingVersion::Legacy)`
`1509`	`1509`	`}`
	`1510`	`+`
	`1511`	`+ #[inline]`
	`1512`	`+ pub fn autodiff_enabled(&self) -> bool {`
	`1513`	`+ self.unstable_opts.autodiff.contains(&AutoDiff::Enable)`
	`1514`	`+ }`
`1510`	`1515`	`}`
`1511`	`1516`
`1512`	`1517`	`impl UnstableOptions {`

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Original file line number	Diff line number	Diff line change
`@@ -658,6 +658,11 @@ impl Session {`
`658`	`658`
`659`	`659`	`/// Calculates the flavor of LTO to use for this compilation.`
`660`	`660`	`pub fn lto(&self) -> config::Lto {`
	`661`	`+ // if autodiff is enabled, use fat lto`
	`662`	`+ if self.opts.autodiff_enabled() {`
	`663`	`+ return config::Lto::Fat;`
	`664`	`+ }`
	`665`	`+`
`661`	`666`	`// If our target has codegen requirements ignore the command line`
`662`	`667`	`if self.target.requires_lto {`
`663`	`668`	`return config::Lto::Fat;`

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