[LLVMdev] bug report on MC asm parser evaluating expressions

[杨勇勇]

Hi, developers,

I notice following asm symbol definitions are eveluated improperly:

A = 9
B = 3*A - 2 * A + 1

the value of B should be 10 instead of 8.

It seems asm parser treat "B = 3*A - 2 * A + 1" as "B = 3*A - (2 * A + 1)"
because the second "*" has higher precedence than "-", and evaluation just
performs simple recursion within AsmParser::ParseBinOpRHS (which resides in
file lib/MC/MCParser/AsmParser.cpp).

Can some one make a fixup?

Regard.
-- 
杨勇勇 (Yang Yong-Yong)
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