tm.texi.in (INITIAL_FRAME_POINTER_OFFSET): Remove.

2016-09-10  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * doc/tm.texi.in (INITIAL_FRAME_POINTER_OFFSET): Remove.
        (ELIMINABLE_REGS, TARGET_CAN_ELIMINATE,
        INITIAL_ELIMINATION_OFFSET) : Update documentation.
        * target.def (frame_pointer_required, can_eliminate): Likewise.
        * doc/tm.texi: Regenerated.
        * builtins.c (expand_builtin_setjmp_receiver): Remove #ifdef
        ELIMINABLE_REGS.
        * df-scan.c (df_hard_reg_init): Likewise.
        * ira.c (ira_setup_eliminable_regset): Likewise.
        * lra-eliminations.c (reg_eliminate_1, (update_reg_eliminate,
        init_elim_table): Likewise.
        * reload1.c (reg_eliminate_1, verify_initial_elim_offsets,
        set_initial_elim_offsets, update_eliminables,
        init_elim_table): Likewise.
        * rtlanal.c (get_initial_register_offset): Likewise.
        * config/ft32/ft32.h (INITIAL_FRAME_POINTER_OFFSET): Remove.
        * config/m32r/m32r.h (INITIAL_FRAME_POINTER_OFFSET): Likewise.
        * config/moxie/moxie.h (INITIAL_FRAME_POINTER_OFFSET): Likewise.
        * config/vax/vax.h (INITIAL_FRAME_POINTER_OFFSET): Likewise.
        * config/fr30/fr30.h: Fix comment.
        * config/frv/frv.c: Likewise.
        * config/frv/frv.h: Likewise.
        * config/ft32/ft32.h: Likewise.
        * config/visium/visium.h: Likewise.
        * config/pa/pa64-linux.h: Likewise.
        * config/v850/v850.h: Likewise.
        * config/cris/cris.c: Likewise.
        * config/ia64/ia64.h: Likewise.
        * config/moxie/moxie.h: Likewise.
        * config/m32r/m32r.h: Likewise.

From-SVN: r240058

12 files changed, 21 insertions, 62 deletions

diff --git a/gcc/config/cris/cris.c b/gcc/config/cris/cris.c
index 971d07f..7a2ac81 100644
--- a/gcc/config/cris/cris.c
+++ b/gcc/config/cris/cris.c
@@ -1282,8 +1282,7 @@ cris_return_address_on_stack_for_return (void)
     : cris_return_address_on_stack ();
 }
 
-/* This used to be the INITIAL_FRAME_POINTER_OFFSET worker; now only
-   handles FP -> SP elimination offset.  */
+/* This handles FP -> SP elimination offset.  */
 
 static int
 cris_initial_frame_pointer_offset (void)
diff --git a/gcc/config/fr30/fr30.h b/gcc/config/fr30/fr30.h
index 51a05db..82366e3 100644
--- a/gcc/config/fr30/fr30.h
+++ b/gcc/config/fr30/fr30.h
@@ -460,9 +460,8 @@ enum reg_class
   {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}	\
 }
 
-/* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'.  It specifies the
-   initial difference between the specified pair of registers.  This macro must
-   be defined if `ELIMINABLE_REGS' is defined.  */
+/* This macro returns the initial difference between the specified pair
+   of registers.  */
 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET)			\
      (OFFSET) = fr30_compute_frame_size (FROM, TO)
 
diff --git a/gcc/config/frv/frv.c b/gcc/config/frv/frv.c
index 957ff03..4bfa827 100644
--- a/gcc/config/frv/frv.c
+++ b/gcc/config/frv/frv.c
@@ -2076,9 +2076,8 @@ frv_can_eliminate (const int from, const int to)
           : true);
 }
 
-/* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'.  It specifies the
-   initial difference between the specified pair of registers.  This macro must
-   be defined if `ELIMINABLE_REGS' is defined.  */
+/* This function returns the initial difference between the specified
+   pair of registers.  */
 
 /* See frv_stack_info for more details on the frv stack frame.  */
 
diff --git a/gcc/config/frv/frv.h b/gcc/config/frv/frv.h
index 8d41b6a..e7f87b1 100644
--- a/gcc/config/frv/frv.h
+++ b/gcc/config/frv/frv.h
@@ -1197,9 +1197,8 @@ typedef struct frv_stack {
   {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}				\
 }
 
-/* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'.  It specifies the
-   initial difference between the specified pair of registers.  This macro must
-   be defined if `ELIMINABLE_REGS' is defined.  */
+/* This macro returns the initial difference between the specified pair
+   of registers.  */
 
 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET)			\
   (OFFSET) = frv_initial_elimination_offset (FROM, TO)
diff --git a/gcc/config/ft32/ft32.h b/gcc/config/ft32/ft32.h
index dd40b1d..6bfd485 100644
--- a/gcc/config/ft32/ft32.h
+++ b/gcc/config/ft32/ft32.h
@@ -250,8 +250,6 @@ enum reg_class
    pointer to a smaller address.  */
 #define STACK_GROWS_DOWNWARD 1
 
-#define INITIAL_FRAME_POINTER_OFFSET(DEPTH) (DEPTH) = 0
-
 /* Offset from the frame pointer to the first local variable slot to
    be allocated.  */
 #define STARTING_FRAME_OFFSET 0
@@ -426,10 +424,8 @@ do { \
  {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
 
 
-/* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'.  It
-   specifies the initial difference between the specified pair of
-   registers.  This macro must be defined if `ELIMINABLE_REGS' is
-   defined.  */
+/* This macro returns the initial difference between the specified pair
+   of registers.  */
 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET)                    \
   do {                                                                  \
     (OFFSET) = ft32_initial_elimination_offset ((FROM), (TO));            \
diff --git a/gcc/config/ia64/ia64.h b/gcc/config/ia64/ia64.h
index 4e1b7af..daf717b 100644
--- a/gcc/config/ia64/ia64.h
+++ b/gcc/config/ia64/ia64.h
@@ -961,10 +961,8 @@ enum reg_class
   {FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM},			\
 }
 
-/* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'.  It
-   specifies the initial difference between the specified pair of
-   registers.  This macro must be defined if `ELIMINABLE_REGS' is
-   defined.  */
+/* This macro returns the initial difference between the specified pair
+   of registers.  */
 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
   ((OFFSET) = ia64_initial_elimination_offset ((FROM), (TO)))
 
diff --git a/gcc/config/m32r/m32r.h b/gcc/config/m32r/m32r.h
index 2ff4a45..cd74cfcf 100644
--- a/gcc/config/m32r/m32r.h
+++ b/gcc/config/m32r/m32r.h
@@ -581,15 +581,6 @@ extern enum reg_class m32r_regno_reg_class[FIRST_PSEUDO_REGISTER];
 
 /* Eliminating the frame and arg pointers.  */
 
-#if 0
-/* C statement to store the difference between the frame pointer
-   and the stack pointer values immediately after the function prologue.
-   If `ELIMINABLE_REGS' is defined, this macro will be not be used and
-   need not be defined.  */
-#define INITIAL_FRAME_POINTER_OFFSET(VAR) \
-((VAR) = m32r_compute_frame_size (get_frame_size ()))
-#endif
-
 /* If defined, this macro specifies a table of register pairs used to
    eliminate unneeded registers that point into the stack frame.  If
    it is not defined, the only elimination attempted by the compiler
@@ -604,10 +595,8 @@ extern enum reg_class m32r_regno_reg_class[FIRST_PSEUDO_REGISTER];
  { ARG_POINTER_REGNUM,	 STACK_POINTER_REGNUM },	\
  { ARG_POINTER_REGNUM,   FRAME_POINTER_REGNUM }}
 
-/* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'.  It
-   specifies the initial difference between the specified pair of
-   registers.  This macro must be defined if `ELIMINABLE_REGS' is
-   defined.  */
+/* This macro returns the initial difference between the specified pair
+   of registers.  */
 
 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET)				\
   do										\
diff --git a/gcc/config/moxie/moxie.h b/gcc/config/moxie/moxie.h
index b9cb38b..204e23c 100644
--- a/gcc/config/moxie/moxie.h
+++ b/gcc/config/moxie/moxie.h
@@ -243,8 +243,6 @@ enum reg_class
    pointer to a smaller address.  */
 #define STACK_GROWS_DOWNWARD 1
 
-#define INITIAL_FRAME_POINTER_OFFSET(DEPTH) (DEPTH) = 0
-
 /* Offset from the frame pointer to the first local variable slot to
    be allocated.  */
 #define STARTING_FRAME_OFFSET 0
@@ -386,10 +384,8 @@ enum reg_class
 {{ FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM },			\
  { ARG_POINTER_REGNUM,   HARD_FRAME_POINTER_REGNUM }}			
 
-/* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'.  It
-   specifies the initial difference between the specified pair of
-   registers.  This macro must be defined if `ELIMINABLE_REGS' is
-   defined.  */
+/* This macro returns the initial difference between the specified pair
+   of registers.  */
 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET)			\
   do {									\
     (OFFSET) = moxie_initial_elimination_offset ((FROM), (TO));		\
diff --git a/gcc/config/pa/pa64-linux.h b/gcc/config/pa/pa64-linux.h
index 540bfa6..4bf1f79 100644
--- a/gcc/config/pa/pa64-linux.h
+++ b/gcc/config/pa/pa64-linux.h
@@ -28,10 +28,8 @@ along with GCC; see the file COPYING3.  If not see
   {ARG_POINTER_REGNUM,	 FRAME_POINTER_REGNUM},				\
 }
 
-/* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'.  It
-   specifies the initial difference between the specified pair of
-   registers.  This macro must be defined if `ELIMINABLE_REGS' is
-   defined.  */
+/* This macro returns the initial difference between the specified pair
+   of registers.  */
 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
   do								\
     {								\
diff --git a/gcc/config/v850/v850.h b/gcc/config/v850/v850.h
index c326df9..ae5e9ce 100644
--- a/gcc/config/v850/v850.h
+++ b/gcc/config/v850/v850.h
@@ -505,10 +505,8 @@ enum reg_class
  { ARG_POINTER_REGNUM,	 STACK_POINTER_REGNUM },			\
  { ARG_POINTER_REGNUM,   HARD_FRAME_POINTER_REGNUM }}			\
 
-/* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'.  It
-   specifies the initial difference between the specified pair of
-   registers.  This macro must be defined if `ELIMINABLE_REGS' is
-   defined.  */
+/* This macro returns the initial difference between the specified pair
+   of registers.  */
 
 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET)			\
 {									\
diff --git a/gcc/config/vax/vax.h b/gcc/config/vax/vax.h
index a381039..77d9e7f 100644
--- a/gcc/config/vax/vax.h
+++ b/gcc/config/vax/vax.h
@@ -340,16 +340,6 @@ enum reg_class { NO_REGS, ALL_REGS, LIM_REG_CLASSES };
 
 #define EXIT_IGNORE_STACK 1
 
-/* Store in the variable DEPTH the initial difference between the
-   frame pointer reg contents and the stack pointer reg contents,
-   as of the start of the function body.  This depends on the layout
-   of the fixed parts of the stack frame and on how registers are saved.
-
-   On the VAX, FRAME_POINTER_REQUIRED is always 1, so the definition of this
-   macro doesn't matter.  But it must be defined.  */
-
-#define INITIAL_FRAME_POINTER_OFFSET(DEPTH) (DEPTH) = 0;
-
 /* Length in units of the trampoline for entering a nested function.  */
 
 #define TRAMPOLINE_SIZE 15
diff --git a/gcc/config/visium/visium.h b/gcc/config/visium/visium.h
index 0f195c0..f7e3da4 100644
--- a/gcc/config/visium/visium.h
+++ b/gcc/config/visium/visium.h
@@ -963,10 +963,8 @@ enum reg_class
 
 /* `INITIAL_ELIMINATION_OFFSET (FROM-REG, TO-REG, OFFSET-VAR)'
 
-   This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'.  It
-   specifies the initial difference between the specified pair of
-   registers.  This macro must be defined if `ELIMINABLE_REGS' is
-   defined.  */
+   This macro returns the initial difference between the specified pair
+   of registers.  */
 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
   (OFFSET = visium_initial_elimination_offset (FROM, TO))