d643a90ee2
Reason for revert: GYP's failing on most (all?) bots. Original issue's description: > ARM Skia NEON patches - 35 - First AArch64 support > > Aarch64 support > > This change contains the necessary modifications to have Skia build and > run properly on an ARMv8 processor in aarch64 execution state. > > Here's a list of the changes: > > - add an arm64 target to the build system + SK_CPU_ARM64 flag > > - MatrixTest was failing when built in Release mode. Fused MAC > instructions were generated which made some intermediate results > more accurate. As the test relies on result comparison, the more > precise results when compared to others led to a gap bigger than > what was tolerated. As I don't know if some actual skia code relies > on results being comparable, I've disabled fused MAC instruction > with -ffp-contract=off for arm64. > > - Modify include/core/SkOnce.h to have barriers work. > > - SK_CPU_ARM64 implies SK_ARM_NEON_MODE_ALWAYS. > > - use existing Xfermode optimisations with modifications that can be > removed in the future when toolchains are ready. Also save a few > instructions is two Xfermodes (will apply to ARM too). > > - use existing SkBoxBlur and SkMorphology optimisations. > > - use existing SkBlitMask optimisations > > - use existing BitmapProcState and Convolution optimisations. > > Future changes will include: > > - Blitters (only partialy merged upstream) > > - SkUtils (there's little value in sending asm optimisations without > having them benchmarked on real hardware). > > Signed-off-by: Kevin PETIT <kevin.petit@arm.com> > > BUG=skia: > > Committed: http://code.google.com/p/skia/source/detail?r=13980 R=djsollen@google.com, reed@google.com, halcanary@google.com, kevin.petit@arm.com TBR=djsollen@google.com, halcanary@google.com, kevin.petit@arm.com, reed@google.com NOTREECHECKS=true NOTRY=true BUG=skia: Author: mtklein@google.com Review URL: https://codereview.chromium.org/216113005 git-svn-id: http://skia.googlecode.com/svn/trunk@13983 2bbb7eff-a529-9590-31e7-b0007b416f81 |
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