| // Auto-generated file. Do not edit! |
| // Template: src/f16-f32-vcvt/neon-int16.c.in |
| // Generator: tools/xngen |
| // |
| // Copyright 2021 Google LLC |
| // |
| // This source code is licensed under the BSD-style license found in the |
| // LICENSE file in the root directory of this source tree. |
| |
| #include <assert.h> |
| |
| #include <arm_neon.h> |
| |
| #include <xnnpack/common.h> |
| #include <xnnpack/vcvt.h> |
| |
| |
| void xnn_f16_f32_vcvt_ukernel__neon_int16_x32( |
| size_t n, |
| const void* input, |
| float* output, |
| const union xnn_f16_f32_cvt_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS |
| { |
| assert(n != 0); |
| assert(n % sizeof(uint16_t) == 0); |
| assert(input != NULL); |
| assert(output != NULL); |
| |
| const uint16x8_t vsign_mask = vmovq_n_u16(0x8000); |
| const uint16x8_t vexp_offset = vmovq_n_u16(0x7000); |
| const float32x4_t vexp_scale = vld1q_dup_f32(¶ms->neon.exp_scale); |
| const uint32x4_t vmagic_bias = vmovq_n_u32(0x3F000000); |
| const uint16x8_t vdenorm_cutoff = vmovq_n_u16(0x0400); |
| |
| const uint16_t* i = (const uint16_t*) input; |
| for (; n >= 32 * sizeof(uint16_t); n -= 32 * sizeof(uint16_t)) { |
| const uint16x8_t vh0 = vld1q_u16(i); i += 8; |
| const uint16x8_t vh1 = vld1q_u16(i); i += 8; |
| const uint16x8_t vh2 = vld1q_u16(i); i += 8; |
| const uint16x8_t vh3 = vld1q_u16(i); i += 8; |
| |
| const uint16x8_t vsign0 = vandq_u16(vh0, vsign_mask); |
| const uint16x8_t vsign1 = vandq_u16(vh1, vsign_mask); |
| const uint16x8_t vsign2 = vandq_u16(vh2, vsign_mask); |
| const uint16x8_t vsign3 = vandq_u16(vh3, vsign_mask); |
| |
| const uint16x8_t vnonsign0 = veorq_u16(vh0, vsign0); |
| const uint16x8_t vnonsign1 = veorq_u16(vh1, vsign1); |
| const uint16x8_t vnonsign2 = veorq_u16(vh2, vsign2); |
| const uint16x8_t vnonsign3 = veorq_u16(vh3, vsign3); |
| |
| const uint16x8x2_t vprenorm0 = vzipq_u16(vshlq_n_u16(vnonsign0, 13), vsraq_n_u16(vexp_offset, vnonsign0, 3)); |
| const uint16x8x2_t vprenorm1 = vzipq_u16(vshlq_n_u16(vnonsign1, 13), vsraq_n_u16(vexp_offset, vnonsign1, 3)); |
| const uint16x8x2_t vprenorm2 = vzipq_u16(vshlq_n_u16(vnonsign2, 13), vsraq_n_u16(vexp_offset, vnonsign2, 3)); |
| const uint16x8x2_t vprenorm3 = vzipq_u16(vshlq_n_u16(vnonsign3, 13), vsraq_n_u16(vexp_offset, vnonsign3, 3)); |
| |
| const float32x4_t vnorm0 = vmulq_f32(vreinterpretq_f32_u16(vprenorm0.val[0]), vexp_scale); |
| const float32x4_t vnorm1 = vmulq_f32(vreinterpretq_f32_u16(vprenorm0.val[1]), vexp_scale); |
| const float32x4_t vnorm2 = vmulq_f32(vreinterpretq_f32_u16(vprenorm1.val[0]), vexp_scale); |
| const float32x4_t vnorm3 = vmulq_f32(vreinterpretq_f32_u16(vprenorm1.val[1]), vexp_scale); |
| const float32x4_t vnorm4 = vmulq_f32(vreinterpretq_f32_u16(vprenorm2.val[0]), vexp_scale); |
| const float32x4_t vnorm5 = vmulq_f32(vreinterpretq_f32_u16(vprenorm2.val[1]), vexp_scale); |
| const float32x4_t vnorm6 = vmulq_f32(vreinterpretq_f32_u16(vprenorm3.val[0]), vexp_scale); |
| const float32x4_t vnorm7 = vmulq_f32(vreinterpretq_f32_u16(vprenorm3.val[1]), vexp_scale); |
| |
| const float32x4_t vdenorm0 = vsubq_f32(vreinterpretq_f32_u32(vaddw_u16(vmagic_bias, vget_low_u16(vnonsign0))), vreinterpretq_f32_u32(vmagic_bias)); |
| const float32x4_t vdenorm1 = vsubq_f32(vreinterpretq_f32_u32(vaddw_u16(vmagic_bias, vget_high_u16(vnonsign0))), vreinterpretq_f32_u32(vmagic_bias)); |
| const float32x4_t vdenorm2 = vsubq_f32(vreinterpretq_f32_u32(vaddw_u16(vmagic_bias, vget_low_u16(vnonsign1))), vreinterpretq_f32_u32(vmagic_bias)); |
| const float32x4_t vdenorm3 = vsubq_f32(vreinterpretq_f32_u32(vaddw_u16(vmagic_bias, vget_high_u16(vnonsign1))), vreinterpretq_f32_u32(vmagic_bias)); |
| const float32x4_t vdenorm4 = vsubq_f32(vreinterpretq_f32_u32(vaddw_u16(vmagic_bias, vget_low_u16(vnonsign2))), vreinterpretq_f32_u32(vmagic_bias)); |
| const float32x4_t vdenorm5 = vsubq_f32(vreinterpretq_f32_u32(vaddw_u16(vmagic_bias, vget_high_u16(vnonsign2))), vreinterpretq_f32_u32(vmagic_bias)); |
| const float32x4_t vdenorm6 = vsubq_f32(vreinterpretq_f32_u32(vaddw_u16(vmagic_bias, vget_low_u16(vnonsign3))), vreinterpretq_f32_u32(vmagic_bias)); |
| const float32x4_t vdenorm7 = vsubq_f32(vreinterpretq_f32_u32(vaddw_u16(vmagic_bias, vget_high_u16(vnonsign3))), vreinterpretq_f32_u32(vmagic_bias)); |
| |
| const uint16x8_t vmask0 = vcgtq_u16(vnonsign0, vdenorm_cutoff); |
| const uint16x8_t vmask1 = vcgtq_u16(vnonsign1, vdenorm_cutoff); |
| const uint16x8_t vmask2 = vcgtq_u16(vnonsign2, vdenorm_cutoff); |
| const uint16x8_t vmask3 = vcgtq_u16(vnonsign3, vdenorm_cutoff); |
| |
| const uint32x4_t vxmask0 = vreinterpretq_u32_s32(vmovl_s16(vreinterpret_s16_u16(vget_low_u16(vmask0)))); |
| const uint32x4_t vf0 = vorrq_u32(vshll_n_u16(vget_low_u16(vsign0), 16), |
| vreinterpretq_u32_f32(vbslq_f32(vxmask0, vnorm0, vdenorm0))); |
| const uint32x4_t vxmask2 = vreinterpretq_u32_s32(vmovl_s16(vreinterpret_s16_u16(vget_low_u16(vmask1)))); |
| const uint32x4_t vf2 = vorrq_u32(vshll_n_u16(vget_low_u16(vsign1), 16), |
| vreinterpretq_u32_f32(vbslq_f32(vxmask2, vnorm2, vdenorm2))); |
| const uint32x4_t vxmask4 = vreinterpretq_u32_s32(vmovl_s16(vreinterpret_s16_u16(vget_low_u16(vmask2)))); |
| const uint32x4_t vf4 = vorrq_u32(vshll_n_u16(vget_low_u16(vsign2), 16), |
| vreinterpretq_u32_f32(vbslq_f32(vxmask4, vnorm4, vdenorm4))); |
| const uint32x4_t vxmask6 = vreinterpretq_u32_s32(vmovl_s16(vreinterpret_s16_u16(vget_low_u16(vmask3)))); |
| const uint32x4_t vf6 = vorrq_u32(vshll_n_u16(vget_low_u16(vsign3), 16), |
| vreinterpretq_u32_f32(vbslq_f32(vxmask6, vnorm6, vdenorm6))); |
| |
| const uint32x4_t vxmask1 = vreinterpretq_u32_s32(vmovl_s16(vreinterpret_s16_u16(vget_high_u16(vmask0)))); |
| const uint32x4_t vf1 = vorrq_u32(vshll_n_u16(vget_high_u16(vsign0), 16), |
| vreinterpretq_u32_f32(vbslq_f32(vxmask1, vnorm1, vdenorm1))); |
| const uint32x4_t vxmask3 = vreinterpretq_u32_s32(vmovl_s16(vreinterpret_s16_u16(vget_high_u16(vmask1)))); |
| const uint32x4_t vf3 = vorrq_u32(vshll_n_u16(vget_high_u16(vsign1), 16), |
| vreinterpretq_u32_f32(vbslq_f32(vxmask3, vnorm3, vdenorm3))); |
| const uint32x4_t vxmask5 = vreinterpretq_u32_s32(vmovl_s16(vreinterpret_s16_u16(vget_high_u16(vmask2)))); |
| const uint32x4_t vf5 = vorrq_u32(vshll_n_u16(vget_high_u16(vsign2), 16), |
| vreinterpretq_u32_f32(vbslq_f32(vxmask5, vnorm5, vdenorm5))); |
| const uint32x4_t vxmask7 = vreinterpretq_u32_s32(vmovl_s16(vreinterpret_s16_u16(vget_high_u16(vmask3)))); |
| const uint32x4_t vf7 = vorrq_u32(vshll_n_u16(vget_high_u16(vsign3), 16), |
| vreinterpretq_u32_f32(vbslq_f32(vxmask7, vnorm7, vdenorm7))); |
| |
| vst1q_f32(output, vreinterpretq_f32_u32(vf0)); output += 4; |
| vst1q_f32(output, vreinterpretq_f32_u32(vf1)); output += 4; |
| vst1q_f32(output, vreinterpretq_f32_u32(vf2)); output += 4; |
| vst1q_f32(output, vreinterpretq_f32_u32(vf3)); output += 4; |
| vst1q_f32(output, vreinterpretq_f32_u32(vf4)); output += 4; |
| vst1q_f32(output, vreinterpretq_f32_u32(vf5)); output += 4; |
| vst1q_f32(output, vreinterpretq_f32_u32(vf6)); output += 4; |
| vst1q_f32(output, vreinterpretq_f32_u32(vf7)); output += 4; |
| } |
| for (; n >= 8 * sizeof(uint16_t); n -= 8 * sizeof(uint16_t)) { |
| const uint16x8_t vh = vld1q_u16(i); i += 8; |
| |
| const uint16x8_t vsign = vandq_u16(vh, vsign_mask); |
| |
| const uint16x8_t vnonsign = veorq_u16(vh, vsign); |
| |
| const uint16x8x2_t vprenorm = vzipq_u16(vshlq_n_u16(vnonsign, 13), vsraq_n_u16(vexp_offset, vnonsign, 3)); |
| const float32x4_t vnorm_lo = vmulq_f32(vreinterpretq_f32_u16(vprenorm.val[0]), vexp_scale); |
| const float32x4_t vnorm_hi = vmulq_f32(vreinterpretq_f32_u16(vprenorm.val[1]), vexp_scale); |
| |
| const float32x4_t vdenorm_lo = vsubq_f32(vreinterpretq_f32_u32(vaddw_u16(vmagic_bias, vget_low_u16(vnonsign))), vreinterpretq_f32_u32(vmagic_bias)); |
| const float32x4_t vdenorm_hi = vsubq_f32(vreinterpretq_f32_u32(vaddw_u16(vmagic_bias, vget_high_u16(vnonsign))), vreinterpretq_f32_u32(vmagic_bias)); |
| |
| const uint16x8_t vmask = vcgtq_u16(vnonsign, vdenorm_cutoff); |
| |
| const uint32x4_t vxmask_lo = vreinterpretq_u32_s32(vmovl_s16(vreinterpret_s16_u16(vget_low_u16(vmask)))); |
| const uint32x4_t vf_lo = vorrq_u32(vshll_n_u16(vget_low_u16(vsign), 16), |
| vreinterpretq_u32_f32(vbslq_f32(vxmask_lo, vnorm_lo, vdenorm_lo))); |
| |
| const uint32x4_t vxmask_hi = vreinterpretq_u32_s32(vmovl_s16(vreinterpret_s16_u16(vget_high_u16(vmask)))); |
| const uint32x4_t vf_hi = vorrq_u32(vshll_n_u16(vget_high_u16(vsign), 16), |
| vreinterpretq_u32_f32(vbslq_f32(vxmask_hi, vnorm_hi, vdenorm_hi))); |
| |
| vst1q_f32(output, vreinterpretq_f32_u32(vf_lo)); output += 4; |
| vst1q_f32(output, vreinterpretq_f32_u32(vf_hi)); output += 4; |
| } |
| if XNN_UNPREDICTABLE(n != 0) { |
| const uint16x8_t vh = vld1q_u16(i); i += 8; |
| |
| const uint16x8_t vsign = vandq_u16(vh, vsign_mask); |
| |
| const uint16x8_t vnonsign = veorq_u16(vh, vsign); |
| |
| const uint16x8x2_t vprenorm = vzipq_u16(vshlq_n_u16(vnonsign, 13), vsraq_n_u16(vexp_offset, vnonsign, 3)); |
| const float32x4_t vnorm_lo = vmulq_f32(vreinterpretq_f32_u16(vprenorm.val[0]), vexp_scale); |
| const float32x4_t vnorm_hi = vmulq_f32(vreinterpretq_f32_u16(vprenorm.val[1]), vexp_scale); |
| |
| const float32x4_t vdenorm_lo = vsubq_f32(vreinterpretq_f32_u32(vaddw_u16(vmagic_bias, vget_low_u16(vnonsign))), vreinterpretq_f32_u32(vmagic_bias)); |
| const float32x4_t vdenorm_hi = vsubq_f32(vreinterpretq_f32_u32(vaddw_u16(vmagic_bias, vget_high_u16(vnonsign))), vreinterpretq_f32_u32(vmagic_bias)); |
| |
| const uint16x8_t vmask = vcgtq_u16(vnonsign, vdenorm_cutoff); |
| |
| const uint32x4_t vxmask_lo = vreinterpretq_u32_s32(vmovl_s16(vreinterpret_s16_u16(vget_low_u16(vmask)))); |
| uint32x4_t vf = vorrq_u32(vshll_n_u16(vget_low_u16(vsign), 16), |
| vreinterpretq_u32_f32(vbslq_f32(vxmask_lo, vnorm_lo, vdenorm_lo))); |
| |
| if (n & (4 * sizeof(uint16_t))) { |
| vst1q_f32(output, vreinterpretq_f32_u32(vf)); output += 4; |
| |
| const uint32x4_t vxmask_hi = vreinterpretq_u32_s32(vmovl_s16(vreinterpret_s16_u16(vget_high_u16(vmask)))); |
| vf = vorrq_u32(vshll_n_u16(vget_high_u16(vsign), 16), |
| vreinterpretq_u32_f32(vbslq_f32(vxmask_hi, vnorm_hi, vdenorm_hi))); |
| } |
| uint32x2_t vf_lo = vget_low_u32(vf); |
| if (n & (2 * sizeof(uint16_t))) { |
| vst1_f32(output, vreinterpret_f32_u32(vf_lo)); output += 2; |
| vf_lo = vget_high_u32(vf); |
| } |
| if (n & (1 * sizeof(uint16_t))) { |
| vst1_lane_f32(output, vreinterpret_f32_u32(vf_lo), 0); |
| } |
| } |
| } |