https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116202
--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Li Xu <x...@gcc.gnu.org>: https://gcc.gnu.org/g:06d3f31384a89039c510531cf8012caed05b2ffd commit r15-2776-g06d3f31384a89039c510531cf8012caed05b2ffd Author: Pan Li <pan2...@intel.com> Date: Tue Aug 6 20:59:37 2024 +0800 Vect: Make sure the lhs type of .SAT_TRUNC has its mode precision [PR116202] The .SAT_TRUNC vect pattern recog is valid when the lhs type has its mode precision. For example as below, QImode with 1 bit precision like _Bool is invalid here. g_12 = (long unsigned int) _2; _13 = MIN_EXPR <g_12, 1>; _3 = (_Bool) _13; The above pattern cannot be recog as .SAT_TRUNC (g_12) because the dest only has 1 bit precision with QImode mode. Aka the type doesn't have the mode precision. The below tests are passed for this patch. 1. The rv64gcv fully regression tests. 2. The x86 bootstrap tests. 3. The x86 fully regression tests. PR target/116202 gcc/ChangeLog: * tree-vect-patterns.cc (vect_recog_sat_trunc_pattern): Add the type_has_mode_precision_p check for the lhs type. gcc/testsuite/ChangeLog: * gcc.target/riscv/rvv/base/pr116202-run-1.c: New test. Signed-off-by: Pan Li <pan2...@intel.com>
