Re: [RFC][PATCH][AArch64] Improve generic branch cost

2017-03-17 Thread Richard Earnshaw (lists)
On 09/03/17 14:42, Wilco Dijkstra wrote: > Hi, > > Recently we've put a lot of effort into improving ifcvt to use CSEL on > AArch64. > In https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01639.html James determined > the best value for AArch64 code generation. Although this setting is used > when

Re: [RFC][PATCH][AArch64] Improve generic branch cost

2017-03-16 Thread Jim Wilson
On Tue, Mar 14, 2017 at 2:37 AM, James Greenhalgh wrote: > I'd like to hear comments from the Exynos-M1, Falkor and > xgene-1 subtarget contributors, particularly as these targets use > generic_branch_costs for their subtarget-sepcific tuning. It may be that > your patch needs to preserve the 2,2

Re: [RFC][PATCH][AArch64] Improve generic branch cost

2017-03-14 Thread James Greenhalgh
On Thu, Mar 09, 2017 at 02:06:16PM -0800, Andrew Pinski wrote: > On Thu, Mar 9, 2017 at 6:42 AM, Wilco Dijkstra wrote: > > Hi, > > > > Recently we've put a lot of effort into improving ifcvt to use CSEL on > > AArch64. In https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01639.html > > James determi

Re: [RFC][PATCH][AArch64] Improve generic branch cost

2017-03-09 Thread Andrew Pinski
On Thu, Mar 9, 2017 at 6:42 AM, Wilco Dijkstra wrote: > Hi, > > Recently we've put a lot of effort into improving ifcvt to use CSEL on > AArch64. > In https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01639.html James determined > the best value for AArch64 code generation. Although this setting is

[RFC][PATCH][AArch64] Improve generic branch cost

2017-03-09 Thread Wilco Dijkstra
Hi, Recently we've put a lot of effort into improving ifcvt to use CSEL on AArch64. In  https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01639.html James determined the best value for AArch64 code generation.  Although this setting is used when explicitly targeting Cortex cores, it is not otherwise u