Displaying 4 results from an estimated 4 matches for "ch3root".
Did you mean:
caroot
2020 Aug 19
2
The value of padding when storing an aggregate into memory
Hello Alexander,
> Interesting topic. Is any such optimization reachable from C?
Yes, I think so - both PassBuilder and PassManagerBuilder add MemCpyOpt &
IPSCCP in the default pass pipeline.
Juneyoung
On Wed, Aug 19, 2020 at 8:43 PM Alexander Cherepanov <ch3root at openwall.com>
wrote:
> On 19/08/2020 06.05, Juneyoung Lee via llvm-dev wrote:
> > LangRef isn't clear about the value of padding when an aggregate value is
> > stored into memory, and I'd like to suggest that storing an aggregate
> fills
> > padding with undef...
2016 May 29
0
problems with objects larger than PTRDIFF_MAX
On Sun, May 29, 2016 at 6:18 AM, Alexander Cherepanov <ch3root at openwall.com>
wrote:
> On 2016-05-20 19:58, David Majnemer via llvm-dev wrote:
>
>> I've come across this issue before and came to the following conclusion:
>> - We are not obligated to support objects that large, C11 5.2.4.1/1 only
>> requires that we support obj...
2016 May 29
2
problems with objects larger than PTRDIFF_MAX
On 2016-05-20 19:58, David Majnemer via llvm-dev wrote:
> I've come across this issue before and came to the following conclusion:
> - We are not obligated to support objects that large, C11 5.2.4.1/1 only
> requires that we support objects of size 65535!
Right, the standard doesn't require it. But I guess you don't imply that
it's fine for clang to silently miscompile
2020 Aug 19
2
The value of padding when storing an aggregate into memory
Hello all,
LangRef isn't clear about the value of padding when an aggregate value is
stored into memory, and I'd like to suggest that storing an aggregate fills
padding with undef.
Here are a few clues that supports this change:
- According to C17, the value of padding bytes when storing values in
structures or unions is unspecified.
- IPSCCP ignores padding and directly stores a