integrate.c (ggc.h): Include.

* integrate.c (ggc.h): Include.
(initial_value_pair, initial_value_struct,
setup_initial_hard_reg_value_integration): Add prototypes.
(expand_inline_function): Call
setup_initial_hard_reg_value_integration.
(has_func_hard_reg_initial_val, get_func_hard_reg_initial_val,
get_hard_reg_initial_val, has_hard_reg_initial_val): New functions
to keep track of values present at the start of a function.
(mark_hard_reg_initial_vals): New, for gc.
(setup_initial_hard_reg_value_integration): New.  Sets up pseudo
mappings for initial values.
(emit_initial_value_sets): New.  Emits code to set initial value
pseudos.
* integrate.h: Add prototypes for new functions.
* function.h (struct function): Add hard_reg_initial_vals field.
* function.c (integrate.h): Include.
(mark_function_status): Call
mark_hard_reg_initial_vals.
* toplev.c (integrate.h): Include.
(rest_of_compilation): Call emit_initial_value_sets.

From-SVN: r43486

1 files changed, 4 insertions, 0 deletions

diff --git a/gcc/function.h b/gcc/function.h
index f27c2b0..3322f43 100644
--- a/gcc/function.h
+++ b/gcc/function.h
@@ -235,6 +235,10 @@ struct function
      inline.  */
   const char *cannot_inline;
 
+  /* Opaque pointer used by get_hard_reg_initial_val and
+     has_hard_reg_initial_val (see integrate.[hc]). */
+  struct initial_value_struct *hard_reg_initial_vals;
+
   /* Number of function calls seen so far in current function.  */
   int x_function_call_count;