On Tue, Dec 16, 2014 at 2:19 AM, Renlin Li <renlin...@arm.com> wrote: > Hi all, > > This is a simple patch to add another two ACLE 2.0 predefined macros into > aarch64 backend. > They are __ARM_ALIGN_MAX_PWR and __ARM_ALIGN_MAX_STACK_PWR. Currently, those > two values are hard-wired to 16. > > The following clauses from ACLE 2.0 documentation indicate the meaning of > those two macros: > > The macro __ARM_ALIGN_MAX_STACK_PWR indicates (as the exponent of a power of > 2) the maximum available stack alignment. > The macro __ARM_ALIGN_MAX_PWR indicates (as the exponent of a power of 2) > the maximum available alignment of static data. > > aarch64-none-elf target is tested on on the model. No new regression. > > Is it Okay for trunk?
Have you tested these alignments? That is have we tested 65536 alignment for both stack and static data? I suspect the stack alignment that is support is not 64k but much smaller. And the supported static data alignment is much larger, maybe 20 or more. Thanks, Andrew Pinski > > Regards, > Renlin Li > > gcc/ChangeLog > > 2014-12-16 Renlin Li <renlin...@arm.com> > > * config/aarch64/aarch64.h(TARGET_CPU_CPP_BUILTINS): Define > __ARM_ALIGN_MAX_PWR > and __ARM_ALIGN_MAX_STACK_PWR.
