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Make use of additional ARMv8 intrinsics #40

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walbourn opened this issue Nov 11, 2016 · 2 comments
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Make use of additional ARMv8 intrinsics #40

walbourn opened this issue Nov 11, 2016 · 2 comments
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walbourn commented Nov 11, 2016 •
edited

The Windows ARM 32-bit platform requires ARMv7, while the Windows ARM 64-bit platform requires ARMv8. Therefore, DirectXMath can make use of additional ARMv8 ARM-NEON intrinsics for dividing, rounding, and half-precision conversion on the ARM64 platform:

vrndnq_f32
vrndq_f32
vrndmq_f32
vrndpq_f32
vcvt_f32_f16
vcvt_f16_f32
vdivq_f32
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walbourn commented Nov 11, 2016 •
edited

The additional ARMv8 optimizations are now checked for the following functions when building for _M_ARM64.

XMMATRIX::operator/=
XMMATRIX::operator/

XMVectorRound
XMVectorTruncate
XMVectorFloor
XMVectorCeiling
XMVectorSum
XMVectorDivide
XMVectorReciprocal
XMVector2TransformCoordStream
XMVector3TransformCoordStream
XMVector3ProjectStream
XMVector3UnprojectStream

XMConvertHalfToFloat
XMConvertHalfToFloatStream
XMConvertFloatToHalf
XMConvertFloatToHalfStream

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Fixed for DirectXMath 3.10

@walbourn walbourn self-assigned this Nov 11, 2016
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