https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108804
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by hongtao Liu <liuho...@gcc.gnu.org>: https://gcc.gnu.org/g:3279b6223066d36d2e6880a137f80a46d3c82c8f commit r14-1421-g3279b6223066d36d2e6880a137f80a46d3c82c8f Author: liuhongt <hongtao....@intel.com> Date: Wed Feb 22 17:54:46 2023 +0800 Enhance NARROW FLOAT_EXPR vectorization by truncating integer to lower precision. Similar like WIDEN FLOAT_EXPR, when direct_optab is not existed, try intermediate integer type whenever gimple ranger can tell it's safe. .i.e. When there's no direct optab for vector long long -> vector float, but the value range of integer can be represented as int, try vector int -> vector float if availble. gcc/ChangeLog: PR tree-optimization/108804 * tree-vect-patterns.cc (vect_get_range_info): Remove static. * tree-vect-stmts.cc (vect_create_vectorized_demotion_stmts): Add new parameter narrow_src_p. (vectorizable_conversion): Enhance NARROW FLOAT_EXPR vectorization by truncating to lower precision. * tree-vectorizer.h (vect_get_range_info): New declare. gcc/testsuite/ChangeLog: * gcc.target/i386/pr108804.c: New test.
