[llvm-commits] [llvm] r84037 - /llvm/trunk/docs/LangRef.html

Sandeep Patel deeppatel1987 at gmail.com
Tue Oct 13 15:12:13 PDT 2009


I'm trying to wrap my head around the semantics of this. Is this the
same as having the containing function be naked, or is it just saying
that there's no call in the asm?

deep

On Tue, Oct 13, 2009 at 9:56 PM, Dale Johannesen <dalej at apple.com> wrote:
> Author: johannes
> Date: Tue Oct 13 16:56:55 2009
> New Revision: 84037
>
> URL: http://llvm.org/viewvc/llvm-project?rev=84037&view=rev
> Log:
> Documentation for the new msasm flag, which is no
> worse than the rest of the asm documentation.
>
>
> Modified:
>    llvm/trunk/docs/LangRef.html
>
> Modified: llvm/trunk/docs/LangRef.html
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/LangRef.html?rev=84037&r1=84036&r2=84037&view=diff
>
> ==============================================================================
> --- llvm/trunk/docs/LangRef.html (original)
> +++ llvm/trunk/docs/LangRef.html Tue Oct 13 16:56:55 2009
> @@ -2338,8 +2338,10 @@
>    to <a href="#moduleasm"> Module-Level Inline Assembly</a>) through the use of
>    a special value.  This value represents the inline assembler as a string
>    (containing the instructions to emit), a list of operand constraints (stored
> -   as a string), and a flag that indicates whether or not the inline asm
> -   expression has side effects.  An example inline assembler expression is:</p>
> +   as a string), a flag that indicates whether or not the inline asm
> +   expression has side effects, and a flag indicating whether the asm came
> +   originally from an asm block.  An example inline assembler
> +   expression is:</p>
>
>  <div class="doc_code">
>  <pre>
> @@ -2367,6 +2369,18 @@
>  </pre>
>  </div>
>
> +<p>Inline asms derived from asm blocks are similarly marked with the
> +   '<tt>msasm</tt>' keyword:</p>
> +
> +<div class="doc_code">
> +<pre>
> +call void asm msasm "eieio", ""()
> +</pre>
> +</div>
> +
> +<p>If both keywords appear the '<tt>sideeffect</tt>' keyword must come
> +   first.</p>
> +
>  <p>TODO: The format of the asm and constraints string still need to be
>    documented here.  Constraints on what can be done (e.g. duplication, moving,
>    etc need to be documented).  This is probably best done by reference to
>
>
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