llvm-project

cd47ae9f - [Profile] Enable binary profile correlation for Mach-O binaries (#179937)

[Profile] Enable binary profile correlation for Mach-O binaries (#179937) The existing ELF/COFF correlation code mostly "just works" on Mach-O files, with one gotcha: on disk, the pointers in `__llvm_covdata` are stored in an encoded format due to dyld fixup chains. (In memory, they would normally be fixed up at load time in a running binary, but the correlator only looks at the on-disk values.) LLVM's Mach-O reader knows how to decode the format, so this patch walks the fixup table to create a set of mappings that the correlator can use to resolve the values. rdar://168259786