Add static size report when using -fstack-usage for ARM targets

[Thomas Klein]

Hello

With GCC 4.6 a new switch -fstack-usage has been added.
Some target architectures have support for this.
To give ARM targets support for this feature only a few lines of code 
are missing.

Is it possible to add this or something similar?

regards
  Thomas


2010-11-21  Thomas Klein 

* config/arm/arm.c (arm_expand_prologue): Report the static  ..
* config/arm/arm.c (thumb1_expand_prologue): .. stack size if 
-fstack-usage is used.


Index: gcc/config/arm/arm.c
===
--- gcc/config/arm/arm.c(revision 167002)
+++ gcc/config/arm/arm.c(working copy)
@@ -15722,6 +15722,13 @@ arm_expand_prologue (void)
}
 }

+  if (flag_stack_usage)
+{
+  HOST_WIDE_INT stack_size = saved_regs;
Hello

With GCC 4.6 a new switch -fstack-usage has been added.
Some target architectures have support for this.
To give ARM targets support for this feature only a few lines of code 
are missing.

Is it possible to add this or something similar?

Regards
  Thomas


2010-11-21  Thomas Klein 

* config/arm/arm.c (arm_expand_prologue): Report the static  ..
* config/arm/arm.c (thumb1_expand_prologue): .. stack size if 
-fstack-usage is used.


Index: gcc/config/arm/arm.c
===
--- gcc/config/arm/arm.c(revision 167002)
+++ gcc/config/arm/arm.c(working copy)
@@ -15722,6 +15722,13 @@ arm_expand_prologue (void)
}
 }

+  if (flag_stack_usage)
+{
+  HOST_WIDE_INT stack_size = saved_regs;
+  current_function_static_stack_size = stack_size;
+}
+
+
   if (offsets->outgoing_args != offsets->saved_args + saved_regs)
 {
   /* This add can produce multiple insns for a large constant, so we
@@ -15733,6 +15740,12 @@ arm_expand_prologue (void)

   insn = emit_insn (gen_addsi3 (stack_pointer_rtx, stack_pointer_rtx,
amount));
+  if (flag_stack_usage)
+{
+   HOST_WIDE_INT stack_size = offsets->outgoing_args - 
(offsets->saved_args + saved_regs);

+   current_function_static_stack_size += stack_size;
+}
+
   do
{
  last = last ? NEXT_INSN (last) : get_insns ();
@@ -20535,6 +20548,10 @@ thumb1_expand_prologue (void)
stack_pointer_rtx);

   amount = offsets->outgoing_args - offsets->saved_regs;
+  if (flag_stack_usage)
+{
+   current_function_static_stack_size = amount;
+}
   amount -= 4 * thumb1_extra_regs_pushed (offsets, true);
   if (amount)
 {
+  current_function_static_stack_size = stack_size;
+}
+
+
   if (offsets->outgoing_args != offsets->saved_args + saved_regs)
 {
   /* This add can produce multiple insns for a large constant, so we
@@ -15733,6 +15740,12 @@ arm_expand_prologue (void)

   insn = emit_insn (gen_addsi3 (stack_pointer_rtx, stack_pointer_rtx,
amount));
+  if (flag_stack_usage)
+{
+   HOST_WIDE_INT stack_size = offsets->outgoing_args - 
(offsets->saved_args + saved_regs);

+   current_function_static_stack_size += stack_size;
+}
+
   do
{
  last = last ? NEXT_INSN (last) : get_insns ();
@@ -20535,6 +20548,10 @@ thumb1_expand_prologue (void)
stack_pointer_rtx);

   amount = offsets->outgoing_args - offsets->saved_regs;
+  if (flag_stack_usage)
+{
+   current_function_static_stack_size = amount;
+}
   amount -= 4 * thumb1_extra_regs_pushed (offsets, true);
   if (amount)
 {

gcc-4.3-20101121 is now available

[gccadmin]

Snapshot gcc-4.3-20101121 is now available on
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