On 5 May 2015 at 11:00, Matthew Wahab wrote:
> 2015-05-05 Matthew Wahab
>
>
> * gcc/config/aarch64-protos.h (struct cpu_branch_cost): New.
> (tune_params): Add field branch_costs.
> (aarch64_branch_cost): Declare.
> * gcc/config/aarch64.c (generic_branch_cost):
On 01/05/15 10:18, Marcus Shawcroft wrote:
On 21 April 2015 at 15:00, Matthew Wahab wrote:
+int aarch64_branch_cost (bool, bool);
+
You would never guess looking at this .h today, but long ago there was
something close to alphabetical order by function name in place.
Please lift this definitio
On 21 April 2015 at 15:00, Matthew Wahab wrote:
> 2015-05-21 Matthew Wahab
>
> * gcc/config/aarch64-protos.h (struct cpu_branch_cost): New.
> (tune_params): Add field branch_costs.
> (aarch64_branch_cost): Declare.
> * gcc/config/aarch64.c (generic_branch_cost)
The AArch64 backend sets BRANCH_COST to be the constant value 2 for all cpus,
meaning that the compiler thinks that branches cost the same across all cpus.
This patch reworks the handling of branch costs to allow per-cpu values to be
set. The actual value of the branch-costs is unchanged as the c
