mirror of
git://gcc.gnu.org/git/gcc.git
synced 2025-04-06 14:11:43 +08:00
3ec2b59097
* rtl.h (insn_first_p): Declare. * rtlanal.c (insn_first_p): New function. * loop.h (varray.h): Include. (struct induction): Change combined_with to unsigned. New members derived, ix and last_use. (reg_iv_type, reg_iv_info): Now varray_type. All references changed. (REG_IV_TYPE, REG_IV_INFO): Define. (first_increment_giv, last_increment_giv): Declare. * loop.c (loop_number_loop_cont): New static variable. (loop_number_cont_dominator): Likewise. (reg_iv_type, reg_iv_info): Now varray_type. (first_increment_giv, last_increment_giv): New variables. (compute_luids, verify_dominator, find_life_end): New functions. (cmp_recombine_givs_stats, recombine_givs): Likewise. (loop_optimize): Allocate loop_number_loop_cont and loop_number_cont_dominator. Use compute_luids. (find_and_verify_loops): Initialize loop_number_loop_cont and loop_number_cont_dominator. (strength_reduce): Try to find bivs that can be expressed as givs of another biv, and to convert biv increments into givs. Call recombine_givs. Handle derived givs. (record_biv): New argument location. All callers changed. (record_giv): Initialize derived and last_use fields. (basic_induction_var): New argument location. All callers changed. (combine_givs): Don't combine a DEST_REG giv with a DEST_ADDR giv. Increment combined_with instead of setting to 1. * unroll.c (derived_regs): New static variable. (unroll_loop): Initialize it. Allocate local_regno according to max_reg_num. (copy_loop_body): Cope with derived givs. (find_splittable_givs): Check for Givs made from biv increments. Set derived_regs for givs. * Makefile.in (stmt.o, loop.o, unroll.o): Depend on loop.h . From-SVN: r24889
README for GNU development tools This directory contains various GNU compilers, assemblers, linkers, debuggers, etc., plus their support routines, definitions, and documentation. Check the INSTALL directory for detailed configuration and installation instructions. Much of the code and documentation enclosed is copyright by the Free Software Foundation, Inc. See the file COPYING or COPYING.LIB in the various directories, for a description of the GNU General Public License terms under which you can copy the files. REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info on where and how to report problems.