Apple patent: Method and apparatus for executing program code

Re:Apple patent: Method and apparatus for executing program ... by viraptor on Monday July 02, 2012 @08:50AM (#4188617)

Isn't that already done with auto-vectorisation? http://gcc.gnu.org/projects/tree-ssa/vectorization.html It should take chunks of "vals" and automatically process X elements (depending on how many fit in the registers) at the same time via SIMD. It was available since ~2008 too.

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Re:Apple patent: Method and apparatus for executing program ... by jonhendry on Monday July 02, 2012 @12:26PM (#4189502)

Apparently not.

At the gcc page you linked:

Example output using -ftree-vectorizer-verbose=2:

vect-1.c:82: note: not vectorized, possible dependence between data-refs a[i_124] and a[i_83]

Apple's patented method would appear to allow vectorization in this case, whereas gcc fails.

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