1999-02-15 16:59 -0500  Zack Weinberg  <zack@midnite.ec.rhno.columbia.edu>
	* c-common.c (UNGETC [USE_CPPLIB=1]): Do nothing if c is EOF.
	* c-lex.c: Likewise.
	* cpplib.c (cpp_push_buffer, cpp_pop_buffer): Use a linked
	list in malloced memory for the buffer stack.
	(cpp_get_token): Don't pop the last buffer off the stack.
	Calls after CPP_EOF has been returned produce CPP_EOF with no
	state change.
	(cpp_finish): Pop last buffer here.
	(do_line): Don't free ip->last_nominal_fname if it is equal to
	ip->fname.
	(special_symbol): If a T_CONST is the empty string, push a
	single `@ ' escape instead.
	(macroexpand): Special symbol buffers have escapes too.
	* cpplib.h (struct cpp_buffer): Remove unused fields, add prev
	buffer pointer.
	(struct cpp_reader): Remove buffer_stack.  Add
	buffer_stack_depth.
	(CPP_PREV_BUFFER, CPP_NULL_BUFFER): Buffer stack is now a
	linked list.

From-SVN: r25218

        * cccp.c: Don't define HOST_WIDE_INT.  Replace all occurrences of
        WIDE_INT with WIDEST_INT.
        * cexp.y: Likewise.
        Don't define unsigned_HOST_WIDE_INT, CHAR_BIT or
        HOST_BITS_PER_WIDE_INT.  Replace occurrences of PRINTF_PROTO_1()
        style with PVPROTO() ATTRIBUTE_PRINTF_1 style macros.  Replace
        occurrences of "unsigned_HOST" with "unsigned HOST".  Provide a
        definition of variable `c89' when compiling a test binary and set it.
        * system.h: Don't define the PRINTF_PROTO_* macros.

From-SVN: r25217

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        * loop.c (mark_loop_jump): Handle LO_SUM.  If we encounter something
        we do not understand, mark the loop and containing loops as invalid.

From-SVN: r25215

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        * loop.c (mark_loop_jump): Handle LO_SUM.  If we encounter something
        we do not understand, mark the loop and containing loops as invalid.

From-SVN: r25214

From-SVN: r25212

alias.c (init_alias_analysis): Avoid self-referential value when setting reg_known_value from REG_EQUAL notes.

        * alias.c (init_alias_analysis): Avoid self-referential value
        when setting reg_known_value from REG_EQUAL notes.

From-SVN: r25211

From-SVN: r25209

        * i386.c (legitimate_pic_address_disp_p): Remove static.
        * i386.h (LEGITIMATE_PIC_OPERAND_P): Use it instead of
        open-coding cases.

From-SVN: r25208

        * except.c (start_catch_handler): Use emit_cmp_and_jump_insns.
        * explow.c (probe_stack_range): Likewise.
        * expmed.c (do_cmp_and_jump): Likewise.
        * expr.c (store_expr, expand_expr, expand_builtin): Likewise.
        (do_tablejump): Likewise.
        * stmt.c (expand_expr_stmt, expand_end_case): Likewise.
        (do_jump_if_equal, emit_case_nodes): Likewise.
        * optabs.c (emit_cmp_and_jump_insns): Clarify comments.  If UNSIGNEDP,
        then convert comparison to an unsigned code before emitting the jump.
        (expand_float, expand_fix): Use emit_cmp_and_jump_insns.

From-SVN: r25205

From-SVN: r25204

From-SVN: r25203

From-SVN: r25200

From-SVN: r25198

From-SVN: r25196

From-SVN: r25194

From-SVN: r25191

From-SVN: r25190

From-SVN: r25189

From-SVN: r25188

From-SVN: r25187

From-SVN: r25186

From-SVN: r25185

        * loop.c: Disable recent loop changes.  Temporary as Joern
        continues to fix problems.

From-SVN: r25184

        * loop.c (combine_givs_used_by_other): Delete.
        (combine_givs_benefit_from): Delete.
        (combine_givs): Deny combination of givs only used once.  Simplify
        code with the death of combine_givs_benefit_from.

From-SVN: r25183

	* loop.c (scan_loop): Call reg_in_basic_block_p before
	loop_reg_used_before_p.

From-SVN: r25182

From-SVN: r25180

* arm.md: Use gen_rtx_FOO instead of gen_rtx (FOO, ...).
* arm.h: Likewise.
* arm.c: Likewise.
* arm.h (TARGET_OPTIONS): Reformat for clarity.
(GO_IF_LEGITIMATE_ADDRESS): When generating PIC, references to symbols
in the constant pool aren't valid.
(LEGITIMATE_PIC_OPERAND_P): Likewise.
* arm.c: Include "system.h", not stdio.h and string.h.

From-SVN: r25175

From-SVN: r25174

From-SVN: r25173

From-SVN: r25171

	* stmt.c (expand_return): Return if optimize_tail_recursion succeeded.
	(optimize_tail_recursion): Change return type from void to int.
	Add return statements.
	* tree.h (optimize_tail_recursion): Change prototype to match.

From-SVN: r25170

	* reload.c (find_reloads_subreg_address): New function, broken out of
	find_reloads_toplev.
	(find_reloads_toplev, find_reloads_address_1): Use it.

From-SVN: r25169

Fri Feb 12 13:20:52 1999  Jeffrey A Law  (law@cygnus.com)
        * h8300.md (zero_extendhisi2 H8/300 variant): Correctly handle
        extending a CONST_INT.
        * h8300.md (peephole for combining memrefs): Delete incorrect peephole.

From-SVN: r25168

	* loop.c (loop_insn_first_p, biv_elimination_giv_has_0_offset):
	New functions.
	(maybe_eliminate_biv_1): Use biv_elimination_giv_has_0_offset.

From-SVN: r25167

Fri Feb 12 11:04:35 1999  Jeffrey A Law  (law@cygnus.com)
        * gcc.c-torture/990106-2.c: Update to work on targets with 16bit
        ints.

From-SVN: r25166

	* loop.c (load_mems): Don't guess how to do a load / store, use
	emit_move_insn.

From-SVN: r25165

From-SVN: r25164

	* config/c4x/c4x.c (c4x_address_cost): Revert 9 Feb change.
(While this patch fixed GIV combination for complex arithmetic
it screwed up generation of autoincrement addresses for the common cases.)

From-SVN: r25163

reload.c (find_reloads_address_1): Fix handling of an autoincremented pseudo which is homed in the stack.

        * reload.c (find_reloads_address_1): Fix handling of an autoincremented
        pseudo which is homed in the stack.

From-SVN: r25162

From-SVN: r25161