[PATCH] D81144: [MC] Generate .debug_line in the 64-bit DWARF format [2/7]

[Fangrui Song via Phabricator via llvm-commits]

MaskRay added a comment.

In D81144#2075259 <https://reviews.llvm.org/D81144#2075259>, @ikudrin wrote:

> The thing is, where the generated debugging info will be eventually placed by a linker. They usually tend to place sections in a similar order as input files, so that small object file, compiled from an assembly, with 32-bit debug info, may easily come after other files with huge debugging info, resulting in impossibility to relocate 32-bit offsets in that small file correctly. The linker should be smart enough to adjust the order of debug info sections in order to avoid that. Not sure if there is any linker that does that.


If the linker places huge_c.o:.text before asm.o:.text, it would be weird if the linker places asm.o:.debug_info before huge_c.o:.debug_info
A linker can be smarter, but the output will be unexpected.


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https://reviews.llvm.org/D81144