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Add option to emit ThinLTO indexes and imports for MLGO training

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Test: presubmit
Bug: 293827654
Change-Id: I8de1287543194d8e47ff5b57d4cabc7416048bbf
This commit is contained in:
Yi Kong 2023-10-31 21:58:42 +09:00
parent 87e4128270
commit b8eaee68b6
1 changed files with 6 additions and 0 deletions
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6
cc/lto.go
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@ -147,6 +147,12 @@ func (lto *lto) flags(ctx BaseModuleContext, flags Flags) Flags {
}
}
// For ML training
if ctx.Config().IsEnvTrue("THINLTO_EMIT_INDEXES_AND_IMPORTS") {
ltoLdFlags = append(ltoLdFlags, "-Wl,--save-temps=import")
ltoLdFlags = append(ltoLdFlags, "-Wl,--thinlto-emit-index-files")
}
flags.Local.CFlags = append(flags.Local.CFlags, ltoCFlags...)
flags.Local.AsFlags = append(flags.Local.AsFlags, ltoCFlags...)
flags.Local.LdFlags = append(flags.Local.LdFlags, ltoCFlags...)