Initial integration of G77.

Please do a make cleandir before rebuilding gcc!

5 files changed, 1096 insertions, 0 deletions

diff --git a/gnu/usr.bin/gcc/f/gbe/2.6.3.diff b/gnu/usr.bin/gcc/f/gbe/2.6.3.diff
new file mode 100644
index 00000000000..8ceee52de91
--- /dev/null
+++ b/gnu/usr.bin/gcc/f/gbe/2.6.3.diff
@@ -0,0 +1,186 @@
+*** gcc-2.6.3/Makefile.in	Fri Dec  2 16:03:09 1994
+--- g77-2.6.3-0.5.16/Makefile.in	Thu Aug 10 04:01:02 1995
+*************** ENQUIRE_CFLAGS = -DNO_MEM -DNO_LONG_DOUB
+*** 118,121 ****
+--- 118,126 ----
+  ENQUIRE_LDFLAGS = $(LDFLAGS)
+  
++ # NEXT FOUR LINES ADDED BY g77 PATCH ONLY TO ENABLE COMPATIBILITY WITH 2.7.x.
++ # Sed command to transform gcc to installed name.  Overwritten by configure.
++ program_transform_name = -e s,x,x,
++ program_transform_cross_name = -e s,^,$(target)-,
++ 
+  # Tools to use when building a cross-compiler.
+  # These are used because `configure' appends `cross-make'
+*************** infodir = $(prefix)/info
+*** 176,179 ****
+--- 181,188 ----
+  # Extension (if any) to put in installed man-page filename.
+  manext = .1
++ # NEXT THREE LINES ADDED BY g77 PATCH ONLY TO ENABLE COMPATIBILITY WITH 2.7.x.
++ objext = .o
++ exeext =
++ 
+  # Directory in which to put man pages.
+  mandir = $(prefix)/man/man1
+*************** c-common.o : c-common.c $(CONFIG_H) $(TR
+*** 1010,1014 ****
+  # Language-independent files.
+  
+! gcc.o: gcc.c $(CONFIG_H) multilib.h config.status
+  	$(CC) $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) \
+    -DSTANDARD_STARTFILE_PREFIX=\"$(libdir)/\" \
+--- 1019,1023 ----
+  # Language-independent files.
+  
+! gcc.o: gcc.c $(CONFIG_H) multilib.h config.status f/lang-specs.h
+  	$(CC) $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) \
+    -DSTANDARD_STARTFILE_PREFIX=\"$(libdir)/\" \
+*************** stor-layout.o : stor-layout.c $(CONFIG_H
+*** 1032,1036 ****
+  fold-const.o : fold-const.c $(CONFIG_H) $(TREE_H) flags.h 
+  toplev.o : toplev.c $(CONFIG_H) $(TREE_H) $(RTL_H) flags.h input.h \
+!    insn-attr.h xcoffout.h defaults.h
+  	$(CC) $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) \
+  	  $(MAYBE_TARGET_DEFAULT) $(MAYBE_USE_COLLECT2) \
+--- 1041,1045 ----
+  fold-const.o : fold-const.c $(CONFIG_H) $(TREE_H) flags.h 
+  toplev.o : toplev.c $(CONFIG_H) $(TREE_H) $(RTL_H) flags.h input.h \
+!    insn-attr.h xcoffout.h defaults.h f/lang-options.h
+  	$(CC) $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) \
+  	  $(MAYBE_TARGET_DEFAULT) $(MAYBE_USE_COLLECT2) \
+*** gcc-2.6.3/fold-const.c	Fri Dec  2 16:03:43 1994
+--- g77-2.6.3-0.5.16/fold-const.c	Thu Aug 10 04:01:03 1995
+*************** eval_subst (arg, old0, new0, old1, new1)
+*** 1938,1943 ****
+--- 1938,1948 ----
+        switch (code)
+  	{
++   /* ??? Disable this since the SAVE_EXPR might already be in use outside
++      the expression.  There may be no way to make this work, but it needs
++      to be looked at again for 2.6.  */
++ #if 0
+  	case SAVE_EXPR:
+  	  return eval_subst (TREE_OPERAND (arg, 0), old0, new0, old1, new1);
++ #endif
+  
+  	case COMPOUND_EXPR:
+*************** fold (expr) 
+*** 3953,3958 ****
+--- 3958,3968 ----
+  	  tree xarg0 = arg0;
+  
++   /* ??? Disable this since the SAVE_EXPR might already be in use outside
++      the expression.  There may be no way to make this work, but it needs
++      to be looked at again for 2.6.  */
++ #if 0
+  	  if (TREE_CODE (xarg0) == SAVE_EXPR)
+  	    have_save_expr = 1, xarg0 = TREE_OPERAND (xarg0, 0);
++ #endif
+  
+  	  STRIP_NOPS (xarg0);
+*************** fold (expr) 
+*** 3971,3976 ****
+--- 3981,3991 ----
+  	    }
+  
++   /* ??? Disable this since the SAVE_EXPR might already be in use outside
++      the expression.  There may be no way to make this work, but it needs
++      to be looked at again for 2.6.  */
++ #if 0
+  	  if (TREE_CODE (xarg0) == SAVE_EXPR)
+  	    have_save_expr = 1, xarg0 = TREE_OPERAND (xarg0, 0);
++ #endif
+  
+  	  STRIP_NOPS (xarg0);
+*** gcc-2.6.3/gcc.c	Mon Nov  7 11:01:43 1994
+--- g77-2.6.3-0.5.16/gcc.c	Thu Aug 10 04:01:03 1995
+*************** static struct compiler default_compilers
+*** 712,715 ****
+--- 712,716 ----
+  					      %{c:%W{o*}%{!o*:-o %w%b.o}}\
+  					      %{!c:-o %d%w%u.o} %{!pipe:%g.s} %A\n}}}}}} "},
++ #include "f/lang-specs.h"
+    /* Mark end of table */
+    {0, 0}
+*** gcc-2.6.3/obstack.c	Sat Nov 12 06:40:02 1994
+--- g77-2.6.3-0.5.16/obstack.c	Thu Aug 10 04:01:04 1995
+*************** Foundation, 675 Mass Ave, Cambridge, MA 
+*** 27,33 ****
+     (especially if it is a shared library).  Rather than having every GNU
+     program understand `configure --with-gnu-libc' and omit the object files,
+!    it is simpler to just do this in the source for each such file.  */
+  
+! #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
+  
+  
+--- 27,40 ----
+     (especially if it is a shared library).  Rather than having every GNU
+     program understand `configure --with-gnu-libc' and omit the object files,
+!    it is simpler to just do this in the source for each such file.
+  
+!    Actually, don't comment this code out after all.  Else, unless the
+!    inlining set up by obstack.h also is commented out (and replaced by
+!    including the system's <obstack.h>), bugs will result on a system
+!    with an older obstack (with older and different inlining) installed.
+!    And for now it doesn't seem worth having obstack.h #include <stdio.h>,
+!    as above, just to get __GNU_LIBRARY__ defined, for example.  */
+! 
+! #if defined (_LIBC) || !defined (__GNU_LIBRARY__) || 1
+  
+  
+*** gcc-2.6.3/stor-layout.c	Thu Oct 20 09:41:02 1994
+--- g77-2.6.3-0.5.16/stor-layout.c	Thu Aug 10 04:01:04 1995
+*************** get_pending_sizes ()
+*** 80,83 ****
+--- 80,93 ----
+  }
+  
++ void
++ put_pending_sizes (chain)
++      tree chain;
++ {
++   if (pending_sizes)
++     abort ();
++ 
++   pending_sizes = chain;
++ }
++ 
+  /* Given a size SIZE that isn't constant, return a SAVE_EXPR
+     to serve as the actual size-expression for a type or decl.  */
+*** gcc-2.6.3/toplev.c	Tue Oct 25 16:09:12 1994
+--- g77-2.6.3-0.5.16/toplev.c	Thu Aug 10 04:01:05 1995
+*************** char *lang_options[] =
+*** 725,728 ****
+--- 725,730 ----
+    "-Wno-protocol",
+  
++ #include "f/lang-options.h"
++ 
+    /* This is for GNAT and is temporary.  */
+    "-gnat",
+*** gcc-2.6.3/tree.c	Fri Dec  2 16:03:49 1994
+--- g77-2.6.3-0.5.16/tree.c	Thu Aug 10 04:01:05 1995
+*************** save_expr (expr)
+*** 1984,1988 ****
+  
+    if (TREE_CONSTANT (t) || (TREE_READONLY (t) && ! TREE_SIDE_EFFECTS (t))
+!       || TREE_CODE (t) == SAVE_EXPR)
+      return t;
+  
+--- 1984,1988 ----
+  
+    if (TREE_CONSTANT (t) || (TREE_READONLY (t) && ! TREE_SIDE_EFFECTS (t))
+!       || TREE_CODE (t) == SAVE_EXPR || TREE_CODE (t) == ERROR_MARK)
+      return t;
+  
+*** gcc-2.6.3/tree.h	Thu Sep  8 14:25:41 1994
+--- g77-2.6.3-0.5.16/tree.h	Thu Aug 10 04:01:06 1995
+*************** extern tree size_int			PROTO((unsigned))
+*** 1245,1248 ****
+--- 1245,1249 ----
+  extern tree round_up			PROTO((tree, int));
+  extern tree get_pending_sizes		PROTO((void));
++ extern void put_pending_sizes		PROTO((tree));
+  
+  /* Type for sizes of data-type.  */
diff --git a/gnu/usr.bin/gcc/f/gbe/2.7.0.diff b/gnu/usr.bin/gcc/f/gbe/2.7.0.diff
new file mode 100644
index 00000000000..5144d81128c
--- /dev/null
+++ b/gnu/usr.bin/gcc/f/gbe/2.7.0.diff
@@ -0,0 +1,70 @@
+*** gcc-2.7.0/obstack.c	Thu Jun 15 18:12:08 1995
+--- g77-2.7.0-0.5.16/obstack.c	Thu Aug 10 04:06:51 1995
+*************** Foundation, 675 Mass Ave, Cambridge, MA 
+*** 27,33 ****
+     (especially if it is a shared library).  Rather than having every GNU
+     program understand `configure --with-gnu-libc' and omit the object files,
+!    it is simpler to just do this in the source for each such file.  */
+  
+! #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
+  
+  
+--- 27,40 ----
+     (especially if it is a shared library).  Rather than having every GNU
+     program understand `configure --with-gnu-libc' and omit the object files,
+!    it is simpler to just do this in the source for each such file.
+  
+!    Actually, don't comment this code out after all.  Else, unless the
+!    inlining set up by obstack.h also is commented out (and replaced by
+!    including the system's <obstack.h>), bugs will result on a system
+!    with an older obstack (with older and different inlining) installed.
+!    And for now it doesn't seem worth having obstack.h #include <stdio.h>,
+!    as above, just to get __GNU_LIBRARY__ defined, for example.  */
+! 
+! #if defined (_LIBC) || !defined (__GNU_LIBRARY__) || 1
+  
+  
+*** gcc-2.7.0/stor-layout.c	Thu Jun 15 08:08:47 1995
+--- g77-2.7.0-0.5.16/stor-layout.c	Thu Aug 10 14:00:15 1995
+*************** get_pending_sizes ()
+*** 82,85 ****
+--- 82,95 ----
+  }
+  
++ void
++ put_pending_sizes (chain)
++      tree chain;
++ {
++   if (pending_sizes)
++     abort ();
++ 
++   pending_sizes = chain;
++ }
++ 
+  /* Given a size SIZE that may not be a constant, return a SAVE_EXPR
+     to serve as the actual size-expression for a type or decl.  */
+*** gcc-2.7.0/tree.c	Thu Jun 15 08:10:23 1995
+--- g77-2.7.0-0.5.16/tree.c	Mon Aug 28 12:21:15 1995
+*************** save_expr (expr)
+*** 2111,2115 ****
+  
+    if (TREE_CONSTANT (t) || (TREE_READONLY (t) && ! TREE_SIDE_EFFECTS (t))
+!       || TREE_CODE (t) == SAVE_EXPR)
+      return t;
+  
+--- 2111,2115 ----
+  
+    if (TREE_CONSTANT (t) || (TREE_READONLY (t) && ! TREE_SIDE_EFFECTS (t))
+!       || TREE_CODE (t) == SAVE_EXPR || TREE_CODE (t) == ERROR_MARK)
+      return t;
+  
+*** gcc-2.7.0/tree.h	Thu Jun 15 08:10:49 1995
+--- g77-2.7.0-0.5.16/tree.h	Thu Aug 10 04:06:52 1995
+*************** extern tree size_int			PROTO((unsigned H
+*** 1290,1293 ****
+--- 1290,1294 ----
+  extern tree round_up			PROTO((tree, int));
+  extern tree get_pending_sizes		PROTO((void));
++ extern void put_pending_sizes		PROTO((tree));
+  
+  /* Type for sizes of data-type.  */
diff --git a/gnu/usr.bin/gcc/f/gbe/2.7.1.diff b/gnu/usr.bin/gcc/f/gbe/2.7.1.diff
new file mode 100644
index 00000000000..e7bd45621e3
--- /dev/null
+++ b/gnu/usr.bin/gcc/f/gbe/2.7.1.diff
@@ -0,0 +1,6 @@
+1996-03-07
+
+This file would have been 124K long in the g77-0.5.18 distribution,
+so, since 2.7.2.diff is available, this file has been omitted.
+If you insist on using gcc-2.7.1 with g77-0.5.18, you should be
+okay, except you won't get some of the nifty new optimizations.
diff --git a/gnu/usr.bin/gcc/f/gbe/2.7.2.diff b/gnu/usr.bin/gcc/f/gbe/2.7.2.diff
new file mode 100644
index 00000000000..4b27bae56d5
--- /dev/null
+++ b/gnu/usr.bin/gcc/f/gbe/2.7.2.diff
@@ -0,0 +1,801 @@
+*** gcc-2.7.2/flags.h	Thu Jun 15 07:34:11 1995
+--- g77-new/flags.h	Wed Mar  6 10:32:55 1996
+*************** extern int flag_unroll_loops;
+*** 204,207 ****
+--- 204,221 ----
+  extern int flag_unroll_all_loops;
+  
++ /* Nonzero forces all invariant computations in loops to be moved
++    outside the loop. */
++ 
++ extern int flag_move_all_movables;
++ 
++ /* Nonzero forces all general induction variables in loops to be
++    strength reduced. */
++ 
++ extern int flag_reduce_all_givs;
++ 
++ /* Nonzero gets another run of loop_optimize performed. */
++ 
++ extern int flag_rerun_loop_opt;
++ 
+  /* Nonzero for -fcse-follow-jumps:
+     have cse follow jumps to do a more extensive job.  */
+*** gcc-2.7.2/gcc.info	Wed Mar  6 10:23:38 1996
+--- g77-new/gcc.info	Fri Mar 15 02:17:17 1996
+*************** Indirect:
+*** 34,60 ****
+  gcc.info-1: 1382
+  gcc.info-2: 42854
+! gcc.info-3: 80578
+! gcc.info-4: 127608
+! gcc.info-5: 173792
+! gcc.info-6: 214726
+! gcc.info-7: 235436
+! gcc.info-8: 285158
+! gcc.info-9: 333642
+! gcc.info-10: 382691
+! gcc.info-11: 419654
+! gcc.info-12: 468472
+! gcc.info-13: 517503
+! gcc.info-14: 564845
+! gcc.info-15: 604398
+! gcc.info-16: 654371
+! gcc.info-17: 703324
+! gcc.info-18: 751502
+! gcc.info-19: 797360
+! gcc.info-20: 846162
+! gcc.info-21: 890260
+! gcc.info-22: 933466
+! gcc.info-23: 982355
+! gcc.info-24: 1032258
+! gcc.info-25: 1067513
+  
+  Tag Table:
+--- 34,60 ----
+  gcc.info-1: 1382
+  gcc.info-2: 42854
+! gcc.info-3: 80645
+! gcc.info-4: 129158
+! gcc.info-5: 175342
+! gcc.info-6: 216276
+! gcc.info-7: 236986
+! gcc.info-8: 286708
+! gcc.info-9: 335192
+! gcc.info-10: 384241
+! gcc.info-11: 421204
+! gcc.info-12: 470022
+! gcc.info-13: 519053
+! gcc.info-14: 566395
+! gcc.info-15: 605948
+! gcc.info-16: 655921
+! gcc.info-17: 704874
+! gcc.info-18: 753052
+! gcc.info-19: 798910
+! gcc.info-20: 847712
+! gcc.info-21: 891810
+! gcc.info-22: 935016
+! gcc.info-23: 983905
+! gcc.info-24: 1033808
+! gcc.info-25: 1069063
+  
+  Tag Table:
+*************** Node: G++ and GCC37258
+*** 68,297 ****
+  Node: Invoking GCC39475
+  Node: Option Summary42854
+! Node: Overall Options53305
+! Node: Invoking G++57868
+! Node: C Dialect Options59742
+! Node: C++ Dialect Options69842
+! Node: Warning Options80578
+! Node: Debugging Options95513
+! Node: Optimize Options105094
+! Node: Preprocessor Options115596
+! Node: Assembler Options122059
+! Node: Link Options122426
+! Node: Directory Options127608
+! Node: Target Options131100
+! Node: Submodel Options134757
+! Node: M680x0 Options136138
+! Node: VAX Options139647
+! Node: SPARC Options140182
+! Node: Convex Options146602
+! Node: AMD29K Options148783
+! Node: ARM Options151814
+! Node: M88K Options153231
+! Node: RS/6000 and PowerPC Options161178
+! Node: RT Options172088
+! Node: MIPS Options173792
+! Node: i386 Options181418
+! Node: HPPA Options186857
+! Node: Intel 960 Options189953
+! Node: DEC Alpha Options192563
+! Node: Clipper Options194235
+! Node: H8/300 Options194634
+! Node: System V Options195079
+! Node: Code Gen Options195765
+! Node: Environment Variables204274
+! Node: Running Protoize208497
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+! Node: Frame Registers875576
+! Node: Elimination879386
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+! Node: Fragments1063276
+! Node: Target Fragment1063873
+! Node: Host Fragment1066911
+! Node: Index1067513
+  
+  End Tag Table
+--- 68,297 ----
+  Node: Invoking GCC39475
+  Node: Option Summary42854
+! Node: Overall Options53372
+! Node: Invoking G++57935
+! Node: C Dialect Options59809
+! Node: C++ Dialect Options69909
+! Node: Warning Options80645
+! Node: Debugging Options95580
+! Node: Optimize Options105161
+! Node: Preprocessor Options117146
+! Node: Assembler Options123609
+! Node: Link Options123976
+! Node: Directory Options129158
+! Node: Target Options132650
+! Node: Submodel Options136307
+! Node: M680x0 Options137688
+! Node: VAX Options141197
+! Node: SPARC Options141732
+! Node: Convex Options148152
+! Node: AMD29K Options150333
+! Node: ARM Options153364
+! Node: M88K Options154781
+! Node: RS/6000 and PowerPC Options162728
+! Node: RT Options173638
+! Node: MIPS Options175342
+! Node: i386 Options182968
+! Node: HPPA Options188407
+! Node: Intel 960 Options191503
+! Node: DEC Alpha Options194113
+! Node: Clipper Options195785
+! Node: H8/300 Options196184
+! Node: System V Options196629
+! Node: Code Gen Options197315
+! Node: Environment Variables205824
+! Node: Running Protoize210047
+! Node: Installation216276
+! Node: Configurations236986
+! Node: Other Dir272897
+! Node: Cross-Compiler274613
+! Node: Steps of Cross276444
+! Node: Configure Cross277562
+! Node: Tools and Libraries278199
+! Node: Cross Runtime280642
+! Node: Cross Headers284723
+! Node: Build Cross286708
+! Node: Sun Install288584
+! Node: VMS Install289716
+! Node: Collect2299645
+! Node: Header Dirs302354
+! Node: C Extensions303768
+! Node: Statement Exprs307047
+! Node: Local Labels308941
+! Node: Labels as Values311003
+! Node: Nested Functions312868
+! Node: Constructing Calls316724
+! Node: Naming Types318781
+! Node: Typeof319875
+! Node: Lvalues321740
+! Node: Conditionals324180
+! Node: Long Long325071
+! Node: Complex326515
+! Node: Zero Length328377
+! Node: Variable Length329051
+! Node: Macro Varargs331576
+! Node: Subscripting333679
+! Node: Pointer Arith334162
+! Node: Initializers334727
+! Node: Constructors335192
+! Node: Labeled Elements336886
+! Node: Case Ranges339515
+! Node: Cast to Union340196
+! Node: Function Attributes341274
+! Node: Function Prototypes350537
+! Node: C++ Comments352336
+! Node: Dollar Signs352872
+! Node: Character Escapes353652
+! Node: Alignment353933
+! Node: Variable Attributes355405
+! Node: Type Attributes363313
+! Node: Inline369832
+! Node: Extended Asm373709
+! Node: Asm Labels384241
+! Node: Explicit Reg Vars385560
+! Node: Global Reg Vars386808
+! Node: Local Reg Vars391373
+! Node: Alternate Keywords392965
+! Node: Incomplete Enums394367
+! Node: Function Names395123
+! Node: C++ Extensions396374
+! Node: Naming Results397611
+! Node: Min and Max400925
+! Node: Destructors and Goto402375
+! Node: C++ Interface402925
+! Node: Template Instantiation408148
+! Node: C++ Signatures413880
+! Node: Trouble418224
+! Node: Actual Bugs419935
+! Node: Installation Problems421204
+! Node: Cross-Compiler Problems434990
+! Node: Interoperation436461
+! Node: External Bugs449825
+! Node: Incompatibilities451957
+! Node: Fixed Headers460507
+! Node: Standard Libraries462849
+! Node: Disappointments464096
+! Node: C++ Misunderstandings468321
+! Node: Static Definitions468968
+! Node: Temporaries470022
+! Node: Protoize Caveats472226
+! Node: Non-bugs476182
+! Node: Warnings and Errors485142
+! Node: Bugs486912
+! Node: Bug Criteria488272
+! Node: Bug Lists490702
+! Node: Bug Reporting492095
+! Node: Sending Patches504513
+! Node: Service509900
+! Node: VMS510461
+! Node: Include Files and VMS510854
+! Node: Global Declarations514744
+! Node: VMS Misc519053
+! Node: Portability523379
+! Node: Interface525142
+! Node: Passes529775
+! Node: RTL547118
+! Node: RTL Objects549006
+! Node: Accessors552050
+! Node: Flags557376
+! Node: Machine Modes566395
+! Node: Constants574029
+! Node: Regs and Memory579217
+! Node: Arithmetic590927
+! Node: Comparisons596825
+! Node: Bit Fields600887
+! Node: Conversions602251
+! Node: RTL Declarations605139
+! Node: Side Effects605948
+! Node: Incdec618495
+! Node: Assembler621011
+! Node: Insns622533
+! Node: Calls643386
+! Node: Sharing645981
+! Node: Reading RTL649057
+! Node: Machine Desc649996
+! Node: Patterns651849
+! Node: Example654793
+! Node: RTL Template655921
+! Node: Output Template668119
+! Node: Output Statement672080
+! Node: Constraints675793
+! Node: Simple Constraints676796
+! Node: Multi-Alternative688229
+! Node: Class Preferences691065
+! Node: Modifiers691945
+! Node: Machine Constraints695105
+! Node: No Constraints703753
+! Node: Standard Names704874
+! Node: Pattern Ordering732782
+! Node: Dependent Patterns734008
+! Node: Jump Patterns736823
+! Node: Insn Canonicalizations742639
+! Node: Peephole Definitions746134
+! Node: Expander Definitions753052
+! Node: Insn Splitting760498
+! Node: Insn Attributes767512
+! Node: Defining Attributes768559
+! Node: Expressions770571
+! Node: Tagging Insns776883
+! Node: Attr Example781246
+! Node: Insn Lengths783622
+! Node: Constant Attributes786986
+! Node: Delay Slots788146
+! Node: Function Units791357
+! Node: Target Macros797027
+! Node: Driver798910
+! Node: Run-time Target810640
+! Node: Storage Layout816527
+! Node: Type Layout830475
+! Node: Registers836898
+! Node: Register Basics837878
+! Node: Allocation Order841915
+! Node: Values in Registers843333
+! Node: Leaf Functions847712
+! Node: Stack Registers850187
+! Node: Obsolete Register Macros851020
+! Node: Register Classes853715
+! Node: Stack and Calling873250
+! Node: Frame Layout873686
+! Node: Frame Registers877126
+! Node: Elimination880936
+! Node: Stack Arguments885192
+! Node: Register Arguments891810
+! Node: Scalar Return900485
+! Node: Aggregate Return904448
+! Node: Caller Saves908163
+! Node: Function Entry909313
+! Node: Profiling918241
+! Node: Varargs921145
+! Node: Trampolines928554
+! Node: Library Calls935016
+! Node: Addressing Modes943074
+! Node: Condition Code950662
+! Node: Costs956861
+! Node: Sections965240
+! Node: PIC970029
+! Node: Assembler Format972739
+! Node: File Framework973744
+! Node: Data Output977981
+! Node: Uninitialized Data983905
+! Node: Label Output986612
+! Node: Initialization996006
+! Node: Macros for Initialization1002149
+! Node: Instruction Output1006746
+! Node: Dispatch Tables1014741
+! Node: Alignment Output1017118
+! Node: Debugging Info1018858
+! Node: All Debuggers1019467
+! Node: DBX Options1021881
+! Node: DBX Hooks1026766
+! Node: File Names and DBX1030105
+! Node: SDB and DWARF1032078
+! Node: Cross-compilation1033808
+! Node: Misc1040255
+! Node: Config1057381
+! Node: Fragments1064826
+! Node: Target Fragment1065423
+! Node: Host Fragment1068461
+! Node: Index1069063
+  
+  End Tag Table
+*** gcc-2.7.2/gcc.info-2	Wed Mar  6 10:23:35 1996
+--- g77-new/gcc.info-2	Fri Mar 15 02:17:16 1996
+*************** are in the following sections.
+*** 92,95 ****
+--- 92,96 ----
+            -fschedule-insns2  -fstrength-reduce  -fthread-jumps
+            -funroll-all-loops  -funroll-loops
++           -fmove-all-movables  -freduce-all-givs  -frerun-loop-opt
+            -O  -O0  -O1  -O2  -O3
+  
+*** gcc-2.7.2/gcc.info-3	Wed Mar  6 10:23:35 1996
+--- g77-new/gcc.info-3	Fri Mar 15 02:17:16 1996
+*************** of optimizations to be performed is desi
+*** 907,910 ****
+--- 907,946 ----
+       `-frerun-cse-after-loop'.
+  
++ `-fmove-all-movables'
++      Forces all invariant computations in loops to be moved outside the
++      loop.  This option is provided primarily to improve performance
++      for some Fortran code, though it might improve code written in
++      other languages.
++ 
++      *Note:* When compiling programs written in Fortran, this option is
++      enabled by default.
++ 
++      Analysis of Fortran code optimization and the resulting
++      optimizations triggered by this option, and the
++      `-freduce-all-givs' and `-frerun-loop-opt' options as well, were
++      contributed by Toon Moene (`toon@moene.indiv.nluug.nl').
++ 
++      Please let us (`fortran@gnu.ai.mit.edu') know how use of these
++      options affects the performance of your production code.  We're
++      very interested in code that runs *slower* when these options are
++      *enabled*.
++ 
++ `-freduce-all-givs'
++      Forces all general-induction variables in loops to be
++      strength-reduced.  This option is provided primarily to improve
++      performance for some Fortran code, though it might improve code
++      written in other languages.
++ 
++      *Note:* When compiling programs written in Fortran, this option is
++      enabled by default.
++ 
++ `-frerun-loop-opt'
++      Runs loop optimizations a second time.  This option is provided
++      primarily to improve performance for some Fortran code, though it
++      might improve code written in other languages.
++ 
++      *Note:* When compiling programs written in Fortran, this option is
++      enabled by default.
++ 
+  `-fno-peephole'
+       Disable any machine-specific peephole optimizations.
+*** gcc-2.7.2/gcc.texi	Wed Mar  6 10:20:58 1996
+--- g77-new/gcc.texi	Wed Mar  6 14:30:40 1996
+*************** original English.
+*** 149,152 ****
+--- 149,153 ----
+  @sp 3
+  @center Last updated 26 November 1995
++ @center (Revised for GNU Fortran 1996-03-06)
+  @sp 1
+  @c The version number appears twice more in this file.  
+*** gcc-2.7.2/invoke.texi	Tue Oct  3 11:40:43 1995
+--- g77-new/invoke.texi	Fri Mar 15 01:49:11 1996
+*************** in the following sections.
+*** 149,152 ****
+--- 149,153 ----
+  -fschedule-insns2  -fstrength-reduce  -fthread-jumps 
+  -funroll-all-loops  -funroll-loops
++ -fmove-all-movables  -freduce-all-givs  -frerun-loop-opt
+  -O  -O0  -O1  -O2  -O3
+  @end smallexample
+*************** Perform the optimization of loop unrolli
+*** 1940,1943 ****
+--- 1941,1985 ----
+  and usually makes programs run more slowly.  @samp{-funroll-all-loops}
+  implies @samp{-fstrength-reduce} as well as @samp{-frerun-cse-after-loop}.
++ 
++ @item -fmove-all-movables
++ Forces all invariant computations in loops to be moved
++ outside the loop.
++ This option is provided primarily to improve performance
++ for some Fortran code, though it might improve code written
++ in other languages.
++ 
++ @emph{Note:} When compiling programs written in Fortran,
++ this option is enabled by default.
++ 
++ Analysis of Fortran code optimization and the resulting
++ optimizations triggered by this option, and the
++ @samp{-freduce-all-givs} and @samp{-frerun-loop-opt}
++ options as well, were
++ contributed by Toon Moene (@code{toon@@moene.indiv.nluug.nl}).
++ 
++ Please let us (@code{fortran@@gnu.ai.mit.edu})
++ know how use of these options affects
++ the performance of your production code.
++ We're very interested in code that runs @emph{slower}
++ when these options are @emph{enabled}.
++ 
++ @item -freduce-all-givs
++ Forces all general-induction variables in loops to be
++ strength-reduced.
++ This option is provided primarily to improve performance
++ for some Fortran code, though it might improve code written
++ in other languages.
++ 
++ @emph{Note:} When compiling programs written in Fortran,
++ this option is enabled by default.
++ 
++ @item -frerun-loop-opt
++ Runs loop optimizations a second time.
++ This option is provided primarily to improve performance
++ for some Fortran code, though it might improve code written
++ in other languages.
++ 
++ @emph{Note:} When compiling programs written in Fortran,
++ this option is enabled by default.
+  
+  @item -fno-peephole
+*** gcc-2.7.2/loop.c	Tue Oct  3 12:17:16 1995
+--- g77-new/loop.c	Wed Mar  6 10:32:58 1996
+*************** move_movables (movables, threshold, insn
+*** 1629,1632 ****
+--- 1629,1633 ----
+  
+  	  if (already_moved[regno]
++ 	      || flag_move_all_movables
+  	      || (threshold * savings * m->lifetime) >= insn_count
+  	      || (m->forces && m->forces->done
+*************** strength_reduce (scan_start, end, loop_t
+*** 3821,3826 ****
+  	     exit.  */
+  
+! 	  if (v->lifetime * threshold * benefit < insn_count
+! 	      && ! bl->reversed)
+  	    {
+  	      if (loop_dump_stream)
+--- 3822,3827 ----
+  	     exit.  */
+  
+! 	  if ( ! flag_reduce_all_givs && v->lifetime * threshold * benefit < insn_count
+! 	      && ! bl->reversed )
+  	    {
+  	      if (loop_dump_stream)
+*** gcc-2.7.2/toplev.c	Fri Oct 20 17:56:35 1995
+--- g77-new/toplev.c	Wed Mar  6 10:32:59 1996
+*************** int flag_unroll_loops;
+*** 388,391 ****
+--- 388,405 ----
+  int flag_unroll_all_loops;
+  
++ /* Nonzero forces all invariant computations in loops to be moved
++    outside the loop. */
++ 
++ int flag_move_all_movables = 0;
++ 
++ /* Nonzero forces all general induction variables in loops to be
++    strength reduced. */
++ 
++ int flag_reduce_all_givs = 0;
++ 
++ /* Nonzero gets another run of loop_optimize performed. */
++ 
++ int flag_rerun_loop_opt = 0;
++ 
+  /* Nonzero for -fwritable-strings:
+     store string constants in data segment and don't uniquize them.  */
+*************** struct { char *string; int *variable; in
+*** 542,545 ****
+--- 556,562 ----
+    {"unroll-loops", &flag_unroll_loops, 1},
+    {"unroll-all-loops", &flag_unroll_all_loops, 1},
++   {"move-all-movables", &flag_move_all_movables, 1},
++   {"reduce-all-givs", &flag_reduce_all_givs, 1},
++   {"rerun-loop-opt", &flag_rerun_loop_opt, 1},
+    {"writable-strings", &flag_writable_strings, 1},
+    {"peephole", &flag_no_peephole, 0},
+*************** rest_of_compilation (decl)
+*** 2894,2897 ****
+--- 2911,2916 ----
+  	       {
+  		 loop_optimize (insns, loop_dump_file);
++ 		 if (flag_rerun_loop_opt)
++ 		 	loop_optimize (insns, loop_dump_file);
+  	       });
+      }
+*** gcc-2.7.2/tree.c	Sun Oct  1 21:26:56 1995
+--- g77-new/tree.c	Wed Mar  6 10:33:00 1996
+*************** saveable_tree_cons (purpose, value, chai
+*** 1965,1968 ****
+--- 1965,1992 ----
+  }
+  
++ /* Try to find out whether the type for which the size is to be determined
++    is an ARRAY(of ARRAY(of ARRAY ... of something with a constant size
++    which is an integral multiple of BITS_PER_UNIT)).
++    In that case, the size in bytes can be determined using an EXACT_DIV_EXPR.
++ */
++ enum tree_code
++ which_div_expr(type)
++      tree type;
++ {
++   tree t;
++ 
++   if (TREE_CODE (type) != POINTER_TYPE && TREE_CODE (type) != ARRAY_TYPE)
++     return CEIL_DIV_EXPR;
++ 
++   for (t = TREE_TYPE (type); TREE_CODE (t) == ARRAY_TYPE; t = TREE_TYPE (t))
++     ;
++ 
++   if (TYPE_SIZE (t) != 0 && TREE_CODE (TYPE_SIZE (t)) == INTEGER_CST &&
++       TREE_INT_CST_LOW (TYPE_SIZE (t)) % BITS_PER_UNIT == 0)
++     return EXACT_DIV_EXPR;
++   else
++     return CEIL_DIV_EXPR;
++ }
++ 
+  /* Return the size nominally occupied by an object of type TYPE
+     when it resides in memory.  The value is measured in units of bytes,
+*************** size_in_bytes (type)
+*** 1985,1989 ****
+        return integer_zero_node;
+      }
+!   t = size_binop (CEIL_DIV_EXPR, TYPE_SIZE (type),
+  		  size_int (BITS_PER_UNIT));
+    if (TREE_CODE (t) == INTEGER_CST)
+--- 2009,2013 ----
+        return integer_zero_node;
+      }
+!   t = size_binop (which_div_expr (type), TYPE_SIZE (type),
+  		  size_int (BITS_PER_UNIT));
+    if (TREE_CODE (t) == INTEGER_CST)
+*************** int_size_in_bytes (type)
+*** 2009,2013 ****
+    if (TREE_INT_CST_HIGH (TYPE_SIZE (type)) != 0)
+      {
+!       tree t = size_binop (CEIL_DIV_EXPR, TYPE_SIZE (type),
+  			   size_int (BITS_PER_UNIT));
+        return TREE_INT_CST_LOW (t);
+--- 2033,2037 ----
+    if (TREE_INT_CST_HIGH (TYPE_SIZE (type)) != 0)
+      {
+!       tree t = size_binop (which_div_expr (type), TYPE_SIZE (type),
+  			   size_int (BITS_PER_UNIT));
+        return TREE_INT_CST_LOW (t);
+*** gcc-2.7.2/version.c	Wed Mar  6 10:21:01 1996
+--- g77-new/version.c	Mon Mar 25 21:17:27 1996
+***************
+*** 1 ****
+! char *version_string = "2.7.2";
+--- 1 ----
+! char *version_string = "2.7.2.f.1";
diff --git a/gnu/usr.bin/gcc/f/gbe/README b/gnu/usr.bin/gcc/f/gbe/README
new file mode 100644
index 00000000000..0e7585f90c3
--- /dev/null
+++ b/gnu/usr.bin/gcc/f/gbe/README
@@ -0,0 +1,33 @@
+951118
+
+This directory contains .diff files for various GNU CC distributions.
+The name of a file tells which version to which it applies.  Prior to
+gcc version 2.7.1, g77 will not build without the appropriate .diff
+file applied to the GNU CC distribution via patch.  That is because
+g77 needs certain changes to be made to the GNU CC back end, which
+it shares with not only the C front end, but with other GNU front
+ends (C++, Objective-C, Pascal, ADA, Chill, ...) as well.  Version
+2.7.1 of gcc includes the changes needed by g77 versions through 0.5.17.
+Future versions of g77 might again require changes to versions 2.7.1,
+and later versions, of gcc.
+
+This distribution of g77 is not supported for versions of gcc prior
+to 2.6.2.  The 2.6.3 patch file should work for version 2.6.2, but
+you should probably use gcc-2.6.3 in any case if that is possible.
+
+To apply a .diff file to, say, gcc 2.7.0, one might use the following
+command:
+
+    patch -p1 -d gcc-2.7.0 < gcc-2.7.0/f/gbe/2.7.0.diff
+
+If you are using a version of gcc more recent than the most
+recent .diff file's version, try the most recent .diff ONLY
+if the difference is in the third field.  E.g. the above
+patch might work on gcc-2.6.4 or gcc-2.6.5 if these were
+released.  On the other hand, it probably wouldn't work for
+a more major release like gcc-2.7.0 or gcc-3.0.0, and you
+shouldn't try it.  If the .diff file is missing, don't bother
+asking `fortran@gnu.ai.mit.edu' for it -- it is certainly
+being worked on.  In the meantime, watch the usual channels
+(see gcc/f/DOC *TROUBLE (BUGS, ETC.)*) for information on
+support for the new version of gcc.