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2017 Dec 20
2
Dropping COMDAT with LTO
I've been digging into COMDAT with regular LTO, specifically in the context of the LLVM gold plugin. The GCC WHOPR documentation specifies that the linker will resolve all COMDAT groups to the IR-provided definitions, if available. Additionally it specifies that "When the WPA phase produces the definition of the COMDAT symbol in a new object file, that definition should not be in a COMDAT