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* alias.c: (mark_constant_function): Don't check pure functions. Initialize and end alias analysis. (nonlocal_mentioned_p): Rename from nonlocal_reference_p. Don't make a special exception for recursion. Handle UNSPEC_VOLATILE. Don't assume ASM_OPERANDS is non-local unless it's volatile. * local-alloc.c (equivalence): New structure. (reg_equiv): Define. (contains_replace_regs): Remove array and use field in reg_equiv. (memref_referenced_p): Likewise. (no_equiv): Likewise. (update_equiv_regs): Likewise. (equiv_init_varies_p, equiv_init_movable_p): New functions. (update_equiv_regs): Use them. Use rtx_varies_p instead of function_invariant_p. Process insns from end to beginning. Allow a REG_EQUIV insn within the same loop as a use to be moved, also allow it to be moved out of a loop. Update REG_DEAD notes when substituting into an insn. From-SVN: r36957
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.