[llvm-commits] [patch] Remember the VariantKind when recursively evaluating a variable

[Rafael Espindola]

The attached patch changes EvaluateAsRelocatable to remember the
VariantKind when recursing on a variable and to produce a new
MCSymbolRefExpr with the correct kind. This fixes relocations on
aliases and allows clang to build itself with -g.

Another option is to just not recurse if the variant kind is not
VK_None. This would match gnu as a bit better, but also requires a
change to  MCAssembler::EvaluateFixup so that it can handle aliases
correctly.

Is it OK?

Cheers,
-- 
Rafael Ávila de Espíndola
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