[LLVMdev] Vector troubles

[Evan Cheng]

What is gcc's caller stack alignment assumption on Linux? Unless it's  
16 byte or more, the callee will have to dynamically align the stack.

Evan

On Sep 28, 2007, at 5:49 PM, Daniel Berlin <dberlin at dberlin.org> wrote:

> On 9/28/07, Anton Korobeynikov <asl at math.spbu.ru> wrote:
>> Chuck,
>>
>>> It is dying trying to store a our working vector into one of the  
>>> LLVM
>>> vectors created on the stack.  Despite the align-16 directive on the
>>> alloca instruction, it is not always aligning to a 16-byte boundary.
>> The stack is not necessary 16 bytes aligned on linux/windows.
>
> On recent versions of linux (anything in the past 2 years), the stack
> will be aligned by gcc, the kernel, and glibc, in all the right
> functions.
>
> So unless you misalign it, ...
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