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Merge "Add additional flag required for Flow Sensitive AFDO" into main

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Yi Kong
2023-10-18 07:04:06 +00:00
committed by Gerrit Code Review
parent c6d992e483 bc2d02aa6a
commit c1545e8dbf
1 changed files with 3 additions and 0 deletions
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cc/afdo.go
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@@ -84,7 +84,10 @@ func (afdo *afdo) flags(ctx ModuleContext, flags Flags) Flags {
// 3. Make the profile searchable by the build system. So it's used the next time the binary
// is built.
flags.Local.CFlags = append([]string{"-funique-internal-linkage-names"}, flags.Local.CFlags...)
// Flags for Flow Sensitive AutoFDO
flags.Local.CFlags = append([]string{"-mllvm", "-enable-fs-discriminator=true"}, flags.Local.CFlags...)
// TODO(b/266595187): Remove the following feature once it is enabled in LLVM by default.
flags.Local.CFlags = append([]string{"-mllvm", "-improved-fs-discriminator=true"}, flags.Local.CFlags...)
}
if path := afdo.Properties.FdoProfilePath; path != nil {
// The flags are prepended to allow overriding.