poly_int: frame allocations

This patch converts the frame allocation code (mostly in function.c)
to use poly_int64 rather than HOST_WIDE_INT for frame offsets and
sizes.

2017-12-21  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* function.h (frame_space): Change start and length from HOST_WIDE_INT
	to poly_int64.
	(get_frame_size): Return the size as a poly_int64 rather than a
	HOST_WIDE_INT.
	(frame_offset_overflow): Take the offset as a poly_int64 rather
	than a HOST_WIDE_INT.
	(assign_stack_local_1, assign_stack_local, assign_stack_temp_for_type)
	(assign_stack_temp): Likewise for the size.
	* function.c (get_frame_size): Return a poly_int64 rather than
	a HOST_WIDE_INT.
	(frame_offset_overflow): Take the offset as a poly_int64 rather
	than a HOST_WIDE_INT.
	(try_fit_stack_local): Take the start, length and size as poly_int64s
	rather than HOST_WIDE_INTs.  Return the offset as a poly_int64_pod
	rather than a HOST_WIDE_INT.
	(add_frame_space): Take the start and end as poly_int64s rather than
	HOST_WIDE_INTs.
	(assign_stack_local_1, assign_stack_local, assign_stack_temp_for_type)
	(assign_stack_temp): Likewise for the size.
	(temp_slot): Change size, base_offset and full_size from HOST_WIDE_INT
	to poly_int64.
	(find_temp_slot_from_address): Handle polynomial offsets.
	(combine_temp_slots): Likewise.
	* emit-rtl.h (rtl_data::x_frame_offset): Change from HOST_WIDE_INT
	to poly_int64.
	* cfgexpand.c (alloc_stack_frame_space): Return the offset as a
	poly_int64 rather than a HOST_WIDE_INT.
	(expand_one_stack_var_at): Take the offset as a poly_int64 rather
	than a HOST_WIDE_INT.
	(expand_stack_vars, expand_one_stack_var_1, expand_used_vars): Handle
	polynomial frame offsets.
	* config/m32r/m32r-protos.h (m32r_compute_frame_size): Take the size
	as a poly_int64 rather than an int.
	* config/m32r/m32r.c (m32r_compute_frame_size): Likewise.
	* config/v850/v850-protos.h (compute_frame_size): Likewise.
	* config/v850/v850.c (compute_frame_size): Likewise.
	* config/xtensa/xtensa-protos.h (compute_frame_size): Likewise.
	* config/xtensa/xtensa.c (compute_frame_size): Likewise.
	* config/pa/pa-protos.h (pa_compute_frame_size): Likewise.
	* config/pa/pa.c (pa_compute_frame_size): Likewise.
	* explow.h (get_dynamic_stack_base): Take the offset as a poly_int64
	rather than a HOST_WIDE_INT.
	* explow.c (get_dynamic_stack_base): Likewise.
	* final.c (final_start_function): Use the constant lower bound
	of the frame size for -Wframe-larger-than.
	* ira.c (do_reload): Adjust for new get_frame_size return type.
	* lra.c (lra): Likewise.
	* reload1.c (reload): Likewise.
	* config/avr/avr.c (avr_asm_function_end_prologue): Likewise.
	* config/pa/pa.h (EXIT_IGNORE_STACK): Likewise.
	* rtlanal.c (get_initial_register_offset): Return the offset as
	a poly_int64 rather than a HOST_WIDE_INT.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r255917

10 files changed, 10 insertions, 10 deletions

diff --git a/gcc/config/avr/avr.c b/gcc/config/avr/avr.c
index ff6672f..e2db38d 100644
--- a/gcc/config/avr/avr.c
+++ b/gcc/config/avr/avr.c
@@ -2044,7 +2044,7 @@ avr_asm_function_end_prologue (FILE *file)
              avr_outgoing_args_size());
 
   fprintf (file, "/* frame size = " HOST_WIDE_INT_PRINT_DEC " */\n",
-           get_frame_size());
+           (HOST_WIDE_INT) get_frame_size());
 
   if (!cfun->machine->gasisr.yes)
     {
diff --git a/gcc/config/m32r/m32r-protos.h b/gcc/config/m32r/m32r-protos.h
index 30dbc1d..83192da 100644
--- a/gcc/config/m32r/m32r-protos.h
+++ b/gcc/config/m32r/m32r-protos.h
@@ -22,7 +22,7 @@
 
 extern void   m32r_init (void);
 extern void   m32r_init_expanders (void);
-extern unsigned m32r_compute_frame_size (int);
+extern unsigned m32r_compute_frame_size (poly_int64);
 extern void   m32r_expand_prologue (void);
 extern void   m32r_expand_epilogue (void);
 extern int    direct_return (void);
diff --git a/gcc/config/m32r/m32r.c b/gcc/config/m32r/m32r.c
index dbc1bae..7f98dd5 100644
--- a/gcc/config/m32r/m32r.c
+++ b/gcc/config/m32r/m32r.c
@@ -1555,7 +1555,7 @@ static struct m32r_frame_info zero_frame_info;
    SIZE is the size needed for local variables.  */
 
 unsigned int
-m32r_compute_frame_size (int size)	/* # of var. bytes allocated.  */
+m32r_compute_frame_size (poly_int64 size)   /* # of var. bytes allocated.  */
 {
   unsigned int regno;
   unsigned int total_size, var_size, args_size, pretend_size, extra_size;
diff --git a/gcc/config/pa/pa-protos.h b/gcc/config/pa/pa-protos.h
index cbf25af..7c38c60 100644
--- a/gcc/config/pa/pa-protos.h
+++ b/gcc/config/pa/pa-protos.h
@@ -85,7 +85,7 @@ extern int pa_shadd_constant_p (int);
 extern int pa_zdepi_cint_p (unsigned HOST_WIDE_INT);
 
 extern void pa_output_ascii (FILE *, const char *, int);
-extern HOST_WIDE_INT pa_compute_frame_size (HOST_WIDE_INT, int *);
+extern HOST_WIDE_INT pa_compute_frame_size (poly_int64, int *);
 extern void pa_expand_prologue (void);
 extern void pa_expand_epilogue (void);
 extern bool pa_can_use_return_insn (void);
diff --git a/gcc/config/pa/pa.c b/gcc/config/pa/pa.c
index 415d23e..15f22fc 100644
--- a/gcc/config/pa/pa.c
+++ b/gcc/config/pa/pa.c
@@ -3771,7 +3771,7 @@ set_reg_plus_d (int reg, int base, HOST_WIDE_INT disp, int note)
 }
 
 HOST_WIDE_INT
-pa_compute_frame_size (HOST_WIDE_INT size, int *fregs_live)
+pa_compute_frame_size (poly_int64 size, int *fregs_live)
 {
   int freg_saved = 0;
   int i, j;
diff --git a/gcc/config/pa/pa.h b/gcc/config/pa/pa.h
index 7bd1f11..044f65e 100644
--- a/gcc/config/pa/pa.h
+++ b/gcc/config/pa/pa.h
@@ -691,7 +691,7 @@ void hppa_profile_hook (int label_no);
 extern int may_call_alloca;
 
 #define EXIT_IGNORE_STACK	\
- (get_frame_size () != 0	\
+ (maybe_ne (get_frame_size (), 0)	\
   || cfun->calls_alloca || crtl->outgoing_args_size)
 
 /* Length in units of the trampoline for entering a nested function.  */
diff --git a/gcc/config/v850/v850-protos.h b/gcc/config/v850/v850-protos.h
index 7cd4f8b..b59ca77 100644
--- a/gcc/config/v850/v850-protos.h
+++ b/gcc/config/v850/v850-protos.h
@@ -26,7 +26,7 @@ extern void   expand_prologue               (void);
 extern void   expand_epilogue               (void);
 extern int    v850_handle_pragma            (int (*)(void), void (*)(int), char *);
 extern int    compute_register_save_size    (long *);
-extern int    compute_frame_size            (int, long *);
+extern int    compute_frame_size            (poly_int64, long *);
 extern void   v850_init_expanders           (void);
 
 #ifdef RTX_CODE
diff --git a/gcc/config/v850/v850.c b/gcc/config/v850/v850.c
index ab096ea..4f602f4 100644
--- a/gcc/config/v850/v850.c
+++ b/gcc/config/v850/v850.c
@@ -1574,7 +1574,7 @@ compute_register_save_size (long * p_reg_saved)
   -------------------------- ---- ------------------   V */
 
 int
-compute_frame_size (int size, long * p_reg_saved)
+compute_frame_size (poly_int64 size, long * p_reg_saved)
 {
   return (size
 	  + compute_register_save_size (p_reg_saved)
diff --git a/gcc/config/xtensa/xtensa-protos.h b/gcc/config/xtensa/xtensa-protos.h
index dac5657..3764340 100644
--- a/gcc/config/xtensa/xtensa-protos.h
+++ b/gcc/config/xtensa/xtensa-protos.h
@@ -67,7 +67,7 @@ extern rtx xtensa_return_addr (int, rtx);
 
 extern void xtensa_setup_frame_addresses (void);
 extern int xtensa_dbx_register_number (int);
-extern long compute_frame_size (int);
+extern long compute_frame_size (poly_int64);
 extern bool xtensa_use_return_instruction_p (void);
 extern void xtensa_expand_prologue (void);
 extern void xtensa_expand_epilogue (void);
diff --git a/gcc/config/xtensa/xtensa.c b/gcc/config/xtensa/xtensa.c
index 665fe95..18b349c 100644
--- a/gcc/config/xtensa/xtensa.c
+++ b/gcc/config/xtensa/xtensa.c
@@ -2698,7 +2698,7 @@ xtensa_call_save_reg(int regno)
 #define XTENSA_STACK_ALIGN(LOC) (((LOC) + STACK_BYTES-1) & ~(STACK_BYTES-1))
 
 long
-compute_frame_size (int size)
+compute_frame_size (poly_int64 size)
 {
   int regno;