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This patch makes inliner to not subtract inlined function profile from the offline copy in cases where profile is clearly not consistent. As a result we do not drop the offline version to likely never executed profile. This helps in cases the profile got lost, i.e. by comdat function merging and also for auto-fdo. gcc/ChangeLog: * ipa-inline-transform.cc (clone_inlined_nodes): Add KEEP_OFFLINE_COPY parameter. (inline_call): Sanity check profile and if it is clearly broken do not subtract profile from original function. * ipa-inline.cc (recursive_inlining): Update. * ipa-inline.h (clone_inlined_nodes): Update.
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