[core] support .gnu.linkonce sections

Description

[core] support .gnu.linkonce sections

.gnu.linkonce sections are similar to section groups.

They were supported before section groups existed and provided a way
to resolve COMDAT sections using a different design.

There are few implementations that use .gnu.linkonce sections
to store simple floating point constants which doesnot require complex section
group support but need a way to store only one copy of the floating point
constant in a binary.

.gnu.linkonce based symbol resolution achieves that.

Review : http://llvm-reviews.chandlerc.com/D3242

Details

Auditors
Bigcheese
H2 lld Triggered Audit
Committed
shankareMar 31 2014, 8:49 PM
Parents
rL205279: LTO type uniquing: store the Decl field of a DIImportedEntity as a DIRef.
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