[llvm-commits] X86 FastISel: Emit immediate call arguments locally to save stack size when compiling with -O0

[Rafael Ávila de Espíndola]

On 11-08-01 5:13 PM, Ivan Krasin wrote:
> Hi llvm team,
> 
> this patch fixes the FastISel stack allocation strategy issue described here:
> http://lists.cs.uiuc.edu/pipermail/llvmdev/2011-July/041452.html
> The solution is to emit immediate int arguments just before the call
> (instead of spilling them on stack at the beginning of the function)
> Please, take a look (the patch is attached the message and is also
> available here:
> http://codereview.chromium.org/7539010/)
>

Cool,

This patch reduces the stack used by the testcase in llvm.org/pr10075
from 0x3729 to 0x35e8.

> Thanks,
> Ivan Krasin
>

Cheers,
Rafael