[cfe-commits] Alignment of return from __builtin_alloca

[Eli Friedman]

On Thu, Jun 7, 2012 at 3:08 PM, David Sehr <sehr at google.com> wrote:
> Please disregard my last comment.  Implementing that will be a bit
> challenging, as stackAlign is a back end value rather than a clang
> TargetInfo value. Are there targets where stackAlign < SuitableAlign?

Feel free to add a StackAlign member to TargetInfo if you need it...
it's already part of the DescriptionString (specified with "S128"
etc.).

And yes, there are targets where StackAlign < SuitableAlign... many
x86-32 targets have SuitableAlign == 128 and StackAlign == 32.

-Eli