[PATCH] Save ref->speculative_id before clone_reference.

Hi. Similarly to other ipa_ref field, we must preserve the values before create_reference is called. It's due to fact that ipa_ref is a pointer to a vector that can be relocated to a different location. Patch can bootstrap on x86_64-linux-gnu and survives regression tests. Ready to be installed

Re: [PATCH] Save ref->speculative_id before clone_reference.

> Hi. > > Similarly to other ipa_ref field, we must preserve the values > before create_reference is called. It's due to fact that ipa_ref > is a pointer to a vector that can be relocated to a different location. > > Patch can bootstrap on x86_64-linux-gnu and survives regression tests. > > Read