On 05/02/2018 12:57 AM, Thomas Preudhomme wrote:
> Hi Segher,
>
> As mentionned in the ticket this was my first thought but this means
> making the pattern aware of all the possible way the address could be
> access (PIC Vs non-PIC, Arm Vs Thumb-2 Vs Thumb-1) to decide how many
> scratch registers
Hi Thomas,
On Fri, May 04, 2018 at 05:52:57AM +0100, Thomas Preudhomme wrote:
> >> As mentionned in the ticket this was my first thought but this means
> >> making the pattern aware of all the possible way the address could be
> >> access (PIC Vs non-PIC, Arm Vs Thumb-2 Vs Thumb-1) to decide how m
On 05/03/2018 10:55 AM, Segher Boessenkool wrote:
> Hi!
>
> On Wed, May 02, 2018 at 07:57:55AM +0100, Thomas Preudhomme wrote:
>> As mentionned in the ticket this was my first thought but this means
>> making the pattern aware of all the possible way the address could be
>> access (PIC Vs non-PIC,
Hi!
On Wed, May 02, 2018 at 07:57:55AM +0100, Thomas Preudhomme wrote:
> As mentionned in the ticket this was my first thought but this means
> making the pattern aware of all the possible way the address could be
> access (PIC Vs non-PIC, Arm Vs Thumb-2 Vs Thumb-1) to decide how many
> scratch re
Hi Segher,
As mentionned in the ticket this was my first thought but this means
making the pattern aware of all the possible way the address could be
access (PIC Vs non-PIC, Arm Vs Thumb-2 Vs Thumb-1) to decide how many
scratch registers are needed. I'd rather reuse the existing pattern as
much as
Hi!
On Sat, Apr 28, 2018 at 12:32:26AM +0100, Thomas Preudhomme wrote:
> On Arm (Aarch32 and Aarch64) the stack protector's guard is accessed by
> loading its address first before loading its value from it as part of
> the stack_protect_set or stack_protect_check insn pattern. This creates
> the r
Thomas Preudhomme writes:
> On Arm (Aarch32 and Aarch64) the stack protector's guard is accessed by
> loading its address first before loading its value from it as part of
> the stack_protect_set or stack_protect_check insn pattern. This creates
> the risk of spilling between the two.
>
> It is pa
