Home / Forums / SIMD Vectorization with AVX2 & SSE Intrinsics for High Performance C++

Tutorial

SIMD Vectorization with AVX2 & SSE Intrinsics for High Performance C++

Pattern Scanning & IDA

MEMBER

Rep: 210

Join Date: Jul 2023

Posts: 25

Thanks: 52

4y ago · Jul 16, 2022 1:21 PM

Using _mm256_loadu_ps, _mm256_fmadd_ps, and _mm256_storeu_ps to process 8 single-precision floats simultaneously.

SigScannerPro · Pattern scanning & Byte masking

The following users thanked SigScannerPro for this post:

DirectX 12 / Vulkan Dev

MEMBER

Rep: 240

Join Date: Feb 2023

Posts: 31

Thanks: 60

4y ago · Jul 16, 2022 2:48 PM

AVX2 FMA (Fused Multiply-Add) computes (a * b) + c in a single hardware cycle with higher floating point precision.

DirectXRay · DirectX 12 & Vulkan Command Lists

x86_64 Disassembler Dev

MEMBER

Rep: 145

Join Date: Feb 2025

Posts: 23

Thanks: 36

4y ago · Jul 16, 2022 5:48 PM

Ensure target CPU flags are verified with __cpuid before executing AVX2 instructions to prevent illegal instruction crashes on older hardware.

AsmDisasm · Zydis & Opcode Length Disassembly

Destination Subforum

Thread Prefix

Thread Title

Post Content (BBCode Enabled)

File Attachment

UnreliableCode Community