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Tamar Christina
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FORTRAN currently has a pragma NOVECTOR for indicating that vectorization should not be applied to a particular loop. ICC/ICX also has such a pragma for C and C++ called #pragma novector. As part of this patch series I need a way to easily turn off vectorization of particular loops, particularly for testsuite reasons. This patch proposes a #pragma GCC novector that does the same for C++ as gfortan does for FORTRAN and what ICX/ICX does for C++. I added only some basic tests here, but the next patch in the series uses this in the testsuite in about ~800 tests. gcc/cp/ChangeLog: * cp-tree.h (RANGE_FOR_NOVECTOR): New. (cp_convert_range_for, finish_while_stmt_cond, finish_do_stmt, finish_for_cond): Add novector param. * init.cc (build_vec_init): Default novector to false. * method.cc (build_comparison_op): Likewise. * parser.cc (cp_parser_statement): Likewise. (cp_parser_for, cp_parser_c_for, cp_parser_range_for, cp_convert_range_for, cp_parser_iteration_statement, cp_parser_omp_for_loop, cp_parser_pragma): Support novector. (cp_parser_pragma_novector): New. * pt.cc (tsubst_expr): Likewise. * semantics.cc (finish_while_stmt_cond, finish_do_stmt, finish_for_cond): Likewise. gcc/ChangeLog: * doc/extend.texi: Document it. gcc/testsuite/ChangeLog: * g++.dg/vect/vect.exp (support vect- prefix). * g++.dg/vect/vect-novector-pragma.cc: New test.
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