Re: PR middle-end/30017 (ICE in C++ size hook)

[Andrew Pinski <pinskia at gmail dot com>]

On Sun, 2006-12-03 at 16:54 -0800, Mark Mitchell wrote:
> For example, if you have "struct S {
> double d; int i; }", it would be better to copy 12 bytes, not 16, on a
> 32-bit machine. 

Well some of the 32-bit targets actually have ways of loading 16-byte
from memory and storing it.  So I don't think this is a good thing to
reduce the copy size down to 12 bytes for those targets (I am thinking
about PPC (VMX), x86 (SSE) and SPU, all have 128-bit registers).  Also
with most 32-bit targets you can use the floating point registers to
copy 8-bytes at a time.

Thanks,
Andrew Pinski