On 15/10/13 12:23, James Greenhalgh wrote: > Hi, > > The historical neon_type attribute formed groups over the Neon > instructions which were well suited for modelling the Cortex-A8 > pipeline, but were cumbersome for other processor models. > > The AArch64 has another classification "simd_type". This is, with a > few exceptions, and when augmented by simd_mode, suitably high > resolution for our needs. However, this is not integrated in to the > "type" attribute, which we would ideally like to be the One True > instruction classification attribute. > > This patch series aims to solve these problems by defining a new, > high resolution classification across the Neon instructions. From > this we can derive two benefits: > > * Convergence between the A32 and A64 backends. > * Better Pipeline modeling. > > The patch series first introduces the new Neon type classifications, > then updates config/arm/neon.md and config/aarch64/aarch64-simd.md > to use the new classifications. > > We then update the pipeline models for the new types. For Cortex-A8 > and Cortex-A9, this simply means reforming the old groups. For Cortex-A15, > this is a chance to form new groups with which we can better model the > pipeline latencies. > > Finally, we can remove the old types and config/arm/neon-schedgen.ml. > > The patch series has been bootstrapped on a Chromebook and the full > testsuite run with no regressions. All pipeline models have been > checked against some sample neon intrinsics code to ensure the new > schedules are sensible, and there are no holes in the pipeline models. > > Thanks, > James > > --- > James Greenhalgh (10): > [ARM] [1/10] Add new types to describe Neon insns. > [AArch64] [Neon types 2/10] Update Current type attributes to new Neon > Types. > [ARM] [Neon types 3/10] Update Current type attributes to new Neon > Types. > [AArch64] [Neon types 4/10] Add type attributes to all simd insns > [ARM] [Neon types 5/10] Update Cortex-A8 pipeline model > [ARM] [Neon types 6/10] Cortex-A9 neon pipeline changes > [ARM] [Neon types 7/10] Cortex-A15 neon pipeline changes > [ARM] [Neon types 8/10] Cortex-A7 neon pipeline model > [ARM] [Neon types 9/10] Remove old neon types > [ARM] [Neon types 10/10] Remove neon-schedgen.ml >
All of the above are OK. R.
