Break out builtin function expansion from expr.c

From-SVN: r28217

gcc/ChangeLog

+Thu Jul 22 11:25:20 1999  Bernd Schmidt  <bernds@cygnus.co.uk>
+
+	* builtins.c: New file.
+	* expr.c (saveregs_value, apply_args_value):  Delete definition,
+	moved into builtins.c.
+	(string_constant): No longer static.
+	(get_pointer_alignment, c_strlen, get_memory_rtx, expand_builtin,
+	apply_args_size, apply_result_size, result_vector,
+	expand_builtin_apply_args, expand_builtin_apply,
+	expand_builtin_return): Delete functions, moved into builtins.c.
+	(INCOMING_REGNO, OUTGOING_REGNO): Delete unused macros.
+	* expr.h (saveregs_value, apply_args_value): Declare variables.
+	(expand_builtin, string_constant): Declare functions.
+	* Makefile.in: Update to build builtin.o.
+
 Wed Jul 21 12:37:34 IDT 1999 Vladik Goytin (goytin@yahoo.com)
 
 	* config/arm/aout.h (ASM_OUTPUT_SECTION_NAME): New macro: Support

gcc/Makefile.in

@@ -673,8 +673,8 @@ SCHED_CFLAGS = @sched_cflags@
 
 # Language-independent object files.
 OBJS = toplev.o version.o tree.o print-tree.o stor-layout.o fold-const.o \
- function.o stmt.o except.o expr.o calls.o expmed.o explow.o optabs.o \
- intl.o varasm.o rtl.o print-rtl.o rtlanal.o emit-rtl.o genrtl.o real.o \
+ function.o stmt.o except.o expr.o calls.o expmed.o explow.o optabs.o real.o \
+ builtins.o intl.o varasm.o rtl.o print-rtl.o rtlanal.o emit-rtl.o genrtl.o \
  dbxout.o sdbout.o dwarfout.o dwarf2out.o xcoffout.o bitmap.o alias.o gcse.o \
  integrate.o jump.o cse.o loop.o unroll.o flow.o stupid.o combine.o varray.o \
  regclass.o regmove.o local-alloc.o global.o reload.o reload1.o caller-save.o \
@@ -1484,6 +1484,10 @@ except.o : except.c $(CONFIG_H) system.h $(RTL_H) $(TREE_H) flags.h \
 expr.o : expr.c $(CONFIG_H) system.h $(RTL_H) $(TREE_H) flags.h function.h \
    $(REGS_H) insn-flags.h insn-codes.h $(EXPR_H) insn-config.h $(RECOG_H) \
    output.h typeclass.h hard-reg-set.h toplev.h hard-reg-set.h except.h
+builtins.o : builtins.c $(CONFIG_H) system.h $(RTL_H) $(TREE_H) flags.h \
+   function.h $(REGS_H) insn-flags.h insn-codes.h $(EXPR_H) insn-config.h \
+   $(RECOG_H) output.h typeclass.h hard-reg-set.h toplev.h hard-reg-set.h \
+   except.h
 calls.o : calls.c $(CONFIG_H) system.h $(RTL_H) $(TREE_H) flags.h $(EXPR_H) \
    insn-flags.h $(REGS_H) toplev.h output.h
 expmed.o : expmed.c $(CONFIG_H) system.h $(RTL_H) $(TREE_H) flags.h  \

gcc/expr.h

@@ -75,6 +75,14 @@ extern rtx forced_labels;
    So we can mark them all live at the end of the function, if stupid.  */
 extern rtx save_expr_regs;
 
+/* Nonzero means __builtin_saveregs has already been done in this function.
+   The value is the pseudoreg containing the value __builtin_saveregs
+   returned.  */
+extern rtx saveregs_value;
+
+/* Similarly for __builtin_apply_args.  */
+extern rtx apply_args_value;
+
 extern int current_function_calls_alloca;
 extern int current_function_outgoing_args_size;
 
@@ -727,6 +735,13 @@ extern rtx get_condition PROTO((rtx, rtx *));
 /* Generate a conditional trap instruction.  */
 extern rtx gen_cond_trap PROTO((enum rtx_code, rtx, rtx, rtx));
 
+/* Functions from builtins.c:  */
+#ifdef TREE_CODE
+extern rtx expand_builtin PROTO((tree, rtx, rtx, enum machine_mode, int));
+#endif
+
+extern rtx expand_builtin_setjmp PROTO((rtx, rtx, rtx, rtx));
+
 /* Functions from expr.c:  */
 
 /* This is run once per compilation to set up which modes can be used
@@ -831,8 +846,6 @@ extern rtx store_expr PROTO((tree, rtx, int));
    Useful after calling expand_expr with 1 as sum_ok.  */
 extern rtx force_operand PROTO((rtx, rtx));
 
-extern rtx expand_builtin_setjmp PROTO((rtx, rtx, rtx, rtx));
-
 #ifdef TREE_CODE
 /* Generate code for computing expression EXP.
    An rtx for the computed value is returned.  The value is never null.
@@ -853,6 +866,10 @@ extern void clear_pending_stack_adjust PROTO((void));
 extern void do_pending_stack_adjust PROTO((void));
 
 #ifdef TREE_CODE
+/* Return the tree node and offset if a given argument corresponds to
+   a string constant.  */
+extern tree string_constant PROTO((tree, tree *));
+
 /* Generate code to evaluate EXP and jump to LABEL if the value is zero.  */
 extern void jumpifnot PROTO((tree, rtx));