[cfe-dev] Default stack alignment for x86 changed

[Reid Kleckner]

On Thu, Jan 15, 2015 at 9:34 AM, palparni <palparni at gmail.com> wrote:

> I understand, so the change was made for Unix-based systems in mind.
> Unfortunately the win32 x86 ABI seems to require doubles to be 64-bit
> aligned. Could we perhaps keep the 8-byte alignment only for win32 targets?
>

The win32 stack only guarantees 4 byte alignment, so far as I know.

While MSVC aligns doubles to 8 byte boundaries when doing record layout, it
will not realign the stack to guarantee 8 byte alignment of double stack
variables.
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