[llvm-dev] llvm, new language and inline assembly.

[AlexandreFressange via llvm-dev]

Will do that Tim,

Thanks a lot :)

-- 
Alex


15.11.2015, 03:57, "Tim Northover" <t.p.northover at gmail.com>:
> On 14 November 2015 at 13:09, AlexandreFressange via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
>>  -> I read that "module asm" should be my companion but I am not sure how it works (the doc about it, is only a few lines of not so complete information.
>
> The documentation is unfortunately lacking. But you almost certainly
> don't want module-level inline asm; you probably want a "%res = call
> TYPE asm ..." type thing instead.
>
>>  What is the syntax when the final register the value comes from or goes in doesn't matter? so no explicit %%rax or %%rdx but rather something like %%r?x; here the question mark let the compiler to choose the best register for the value);
>
> Our inline asm is based heavily on GCC style syntax. The main change
> is that a "%N" or "%[whatever]" argument to reference an in/out value
> becomes $N. Operand modifiers are written "${N:mod}" rather than
> "%modN".
>
> The best way to get familiar with it is probably to write what you
> want in GCC asm and run "clang -S -o- -emit-llvm" to see what IR gets
> produced.
>
> Cheers.
>
> Tim.