a41a6142df
Epilogue vectorisation uses the vectorisation factor of the main loop as the maximum vectorisation factor allowed for correctness. That makes sense as a conservatively correct value, since the chosen vectorisation factor will be strictly less than that anyway. However, once the VF itself becomes variable, it's easier to carry across the original maximum VF instead. 2017-09-14 Richard Sandiford <richard.sandiford@linaro.org> Alan Hayward <alan.hayward@arm.com> David Sherwood <david.sherwood@arm.com> gcc/ * tree-vectorizer.h (_loop_vec_info): Add max_vectorization_factor. (LOOP_VINFO_MAX_VECT_FACTOR): New macro. (LOOP_VINFO_ORIG_VECT_FACTOR): Replace with... (LOOP_VINFO_ORIG_MAX_VECT_FACTOR): ...this new macro. * tree-vect-data-refs.c (vect_analyze_data_ref_dependences): Update accordingly. * tree-vect-loop.c (_loop_vec_info::_loop_vec_info): Initialize max_vectorization_factor. (vect_analyze_loop_2): Set LOOP_VINFO_MAX_VECT_FACTOR. Co-Authored-By: Alan Hayward <alan.hayward@arm.com> Co-Authored-By: David Sherwood <david.sherwood@arm.com> From-SVN: r252766 |
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| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
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| libatomic | ||
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| libcpp | ||
| libdecnumber | ||
| libffi | ||
| libgcc | ||
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| libgomp | ||
| libhsail-rt | ||
| libiberty | ||
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| libmpx | ||
| libobjc | ||
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| maintainer-scripts | ||
| zlib | ||
| .dir-locals.el | ||
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README
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