[ARC] DWARF emitting cleanup.

The use of CFA_FRAME_BASE_OFFSET and ARG_POINTER_CFA_OFFSET macros
leads to wrong offset calculation for DW_OP_fbreg constructions.
Remove them.

gcc/
2017-04-14  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc-protos.h (arc_decl_pretend_args): Remove.
	* config/arc/arc.c (arc_decl_pretend_args): Likewise.
	* config/arc/arc.h (CFA_FRAME_BASE_OFFSET): Likewise.
	(ARG_POINTER_CFA_OFFSET): Likewise.

From-SVN: r246926

gcc/ChangeLog

 2017-04-14  Claudiu Zissulescu  <claziss@synopsys.com>
 
+	* config/arc/arc-protos.h (arc_decl_pretend_args): Remove.
+	* config/arc/arc.c (arc_decl_pretend_args): Likewise.
+	* config/arc/arc.h (CFA_FRAME_BASE_OFFSET): Likewise.
+	(ARG_POINTER_CFA_OFFSET): Likewise.
+
+2017-04-14  Claudiu Zissulescu  <claziss@synopsys.com>
+
 	* config/arc/arc.c (arc_mode_dependent_address_p): Relax
 	conditions to take advantage of various optimizations.
 

gcc/config/arc/arc-protos.h

@@ -111,7 +111,6 @@ extern int arc_label_align (rtx_insn *label);
 extern bool arc_need_delay (rtx_insn *insn);
 extern bool arc_text_label (rtx_insn *insn);
 
-extern int arc_decl_pretend_args (tree decl);
 extern bool arc_short_comparison_p (rtx, int);
 extern bool arc_epilogue_uses (int regno);
 extern bool arc_eh_uses (int regno);

gcc/config/arc/arc.c

@@ -9338,17 +9338,6 @@ arc_text_label (rtx_insn *label)
   return false;
 }
 
-/* Return the size of the pretend args for DECL.  */
-
-int
-arc_decl_pretend_args (tree decl)
-{
-  /* struct function is in DECL_STRUCT_FUNCTION (decl), but no
-     pretend_args there...  See PR38391.  */
-  gcc_assert (decl == current_function_decl);
-  return crtl->args.pretend_args_size;
-}
-
 /* Without this, gcc.dg/tree-prof/bb-reorg.c fails to assemble
   when compiling with -O2 -freorder-blocks-and-partition -fprofile-use
   -D_PROFILE_USE; delay branch scheduling then follows a crossing jump

gcc/config/arc/arc.h

@@ -1581,11 +1581,6 @@ extern enum arc_function_type arc_compute_function_type (struct function *);
 
 #define INIT_EXPANDERS arc_init_expanders ()
 
-#define CFA_FRAME_BASE_OFFSET(FUNDECL) (-arc_decl_pretend_args ((FUNDECL)))
-
-#define ARG_POINTER_CFA_OFFSET(FNDECL) \
-  (FIRST_PARM_OFFSET (FNDECL) + arc_decl_pretend_args ((FNDECL)))
-
 enum
 {
   ARC_LRA_PRIORITY_NONE, ARC_LRA_PRIORITY_NONCOMPACT, ARC_LRA_PRIORITY_COMPACT