[llvm-commits] PATCH: replace if-chain in AsmParser's directive parsing code

[Eli Bendersky]

AsmParser has a couple of if-chains when parsing directives. The
attached patch replaces the if-chains with enum+switch. No change in
functionality.

Unfortunately I didn't measure any significant speedups for the whole
llvm-mc (only 1-2%), so I'll do more fine-grained measurements once I
get the opportunity.

Also, I should add that in general AsmParser's parsing code can be
cleaned up even more (for example w.r.t. the extensions registersing
directive parsers, which can be unified with other directive parsing
code). So this patch should just be seen as a first step in a
(hopefully) right direction.
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