Answer by Andrey Semashev for Aligned and unaligned memory access with...
In addition to Z boson's answer I can tell that the problem can be caused by that the compiler assumes the memory region is aligned (because of __attribute__ ((aligned(32))) marking the array). In...
View ArticleAnswer by Z boson for Aligned and unaligned memory access with AVX/AVX2...
There is no way to explicitly control folding of loads with intrinsics. I consider this a weakness of intrinsics. If you want to explicitly control the folding then you have to use assembly.In previous...
View ArticleAligned and unaligned memory access with AVX/AVX2 intrinsics
According to Intel's Software Developer Manual (sec. 14.9), AVX relaxed the alignment requirements of memory accesses. If data is loaded directly in a processing instruction, e.g.vaddps...
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