[llvm-dev] RFC: [MC] Calculate difference of symbols in two consecutive MCDataFragments

[Jian Cai via llvm-dev]

Hello,

I've been trying to add support to the integrated assembler to handle cases
like below

foo:instr; .if . - foo; instr; .endif

when the dot symbol and foo are assigned to consecutive MCDataFragments
<https://github.com/ClangBuiltLinux/linux/issues/744>. I have a patch
<https://reviews.llvm.org/D6941> under review. And even though it seems to
solve the problem, the concern is it complicates the code and we would like
to know if there is more decent way to handle this. Please feel free to
share your thoughts.

Thanks,
Jian
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