[llvm-dev] compatibility with gnu binutils (original) (raw)

Fangrui Song via llvm-dev llvm-dev at lists.llvm.org
Sun Feb 9 21:38:47 PST 2020

Aside from the above query, case sensitive asm doesn't sound like a good feature to me either. So given that we got around with this for years, how much use do non-lower case assembler pseudops actually see? Joerg

So given that we got around with this for years, how much use do non-lower case assembler pseudops actually see? The original issue was in newlib[0] and I also went through the GNU AS docs [1] and found a few targets that list directives as non lower case (ARC, MMIX, V850). However they would accept any case. ".ABORT" is called out specifically mostly as a compatibility note. Again, accepts any case. I'm not holding this up as a super high priority issue, the bug above is the only one I know of. I just happened across it and thought it would be good to make it consistent. [0] https://bugs.llvm.org/showbug.cgi?id=39527 [1] https://sourceware.org/binutils/docs/as/

I agree with Joerg and Jon regarding case-insensitive assembly directives: they can be categorized as legacy cruft. The portability fix on the newlib side shouldn't be too difficult.

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