[llvm-commits] [patch] Add the returns_twice attribute

[Evan Cheng]

See Function::callsFunctionThatReturnsTwice(). If you are adding this attribute, then should add the attribute to these special functions (e.g. setjmp)? Then callsFunctionThatReturnsTwice() can go away.

Evan

On Sep 29, 2011, at 3:42 PM, Rafael Ávila de Espíndola wrote:

> The attached patch reuses the hotpatch attribute (which Charles Davis
> says is unused) to create the returs_twice attribute. This will be used
> to implement the C attribute with the same name.
> 
> It is needed by valgrind, since it has its own setjmp like function.
> 
> See PR11038 for more information.
> 
> Is it OK?
> 
> Cheers,
> Rafael
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