[llvm-commits] [llvm] r125595 - in /llvm/trunk: lib/MC/MCParser/AsmParser.cpp test/MC/AsmParser/exprs.s test/MC/AsmParser/paren.s

[Jim Grosbach]

On Feb 16, 2011, at 4:09 PM, Joerg Sonnenberger wrote:

> On Wed, Feb 16, 2011 at 01:55:20PM -0800, Jim Grosbach wrote:
>> Brackets have well-defined meaning in lots of asm dialects (memory references, etc). Overloading that to mean something else in expressions is dubious at best.
>> 
>> For example,
>> ldr r0, [r5]
>> 
>> Is that an expression referring to a symbol named r5, or is it an indirect memory reference via register 5?
> 
> How is
> 	ldr r0, (r5)
> interpreted in this context? AT&T syntax for x86 and quite a few other
> platforms consider those to be equivalent.

That's an expression for ARM. What x86 does isn't really relevant in this context, as ARM assembly syntax has little to do with x86.

-Jim

ps., please CC me, not just respond to the list. Otherwise it's not unlikely I'll miss responses.