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rust source #1
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#![feature(slice_as_chunks)] use std::arch::{aarch64::*, asm}; #[no_mangle] pub unsafe fn umlal_add(output: &mut [u64; 4], chunked: &[[u8; 32]]) { let output = output.as_mut_ptr(); // Load existing output let mut output_0 = vld1q_u64(output.add(0)); let mut output_1 = vld1q_u64(output.add(2)); for chunk in chunked { let base: *const u64 = chunk.as_ptr().cast(); // Load data let v0 = vld1q_u64(base.add(0)); let v1 = vld1q_u64(base.add(2)); // Treat as 32-bit components let v0_32 = vreinterpretq_u32_u64(v0); let v1_32 = vreinterpretq_u32_u64(v1); // Multiply and add let sum_0 = vmlal_u32(v0, vget_low_u32(v0_32), vget_low_u32(v1_32)); let sum_1 = vmlal_high_u32(v0, v0_32, v1_32); // Prevent reordering asm!("/* {x:v} */", x = in(vreg) sum_0); asm!("/* {x:v} */", x = in(vreg) sum_1); // Accumulate output_0 = vaddq_u64(output_0, sum_0); output_1 = vaddq_u64(output_1, sum_1); } // Store to output vst1q_u64(output.add(0), output_0); vst1q_u64(output.add(2), output_1); } #[no_mangle] pub unsafe fn add_umlal(output: &mut [u64; 4], chunked: &[[u8; 32]]) { let output = output.as_mut_ptr(); // Load existing output let mut output_0 = vld1q_u64(output.add(0)); let mut output_1 = vld1q_u64(output.add(2)); for chunk in chunked { let base: *const u64 = chunk.as_ptr().cast(); // Load data let v0 = vld1q_u64(base.add(0)); let v1 = vld1q_u64(base.add(2)); // Treat as 32-bit components let v0_32 = vreinterpretq_u32_u64(v0); let v1_32 = vreinterpretq_u32_u64(v1); // Multiply and add let sum_0 = vmlal_u32(v0, vget_low_u32(v0_32), vget_low_u32(v1_32)); let sum_1 = vmlal_high_u32(v0, v0_32, v1_32); // Prevent reordering // asm!("/* {x:v} */", x = in(vreg) sum_0); // asm!("/* {x:v} */", x = in(vreg) sum_1); // Accumulate output_0 = vaddq_u64(output_0, sum_0); output_1 = vaddq_u64(output_1, sum_1); } // Store to output vst1q_u64(output.add(0), output_0); vst1q_u64(output.add(2), output_1); }
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