(mips_select_rtx_section, mips_select_section): New functions.

(mips_select_rtx_section, mips_select_section): New
functions.  Prefer rdata when TARGET_EMBEDDED_DATA, and prefer
sdata otherwise.

From-SVN: r7031

diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index 19a00cc3ed3140e780cd4cf88b168083ca9e8a77..562a1e98a6d27007586612e4efe672bf8e136621 100644 (file)
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -5185,3 +5185,80 @@ simple_epilogue_p ()
 
   return (compute_frame_size (get_frame_size ())) == 0;
 }
+\f
+/* Choose the section to use for the constant rtx expression X that has
+   mode MODE.  */
+
+mips_select_rtx_section (mode, x)
+     enum machine_mode mode;
+     rtx x;
+{
+  if (TARGET_EMBEDDED_DATA)
+    {
+      /* For embedded applications, always put constants in read-only data,
+        in order to reduce RAM usage.  */
+      rdata_section ();
+    }
+  else
+    {
+      /* For hosted applications, always put constants in small data if
+        possible, as this gives the best performance.  */
+     
+      if (GET_MODE_SIZE (mode) <= mips_section_threshold
+         && mips_section_threshold > 0)
+       sdata_section ();
+      else
+       rdata_section ();
+    }
+}
+
+/* Choose the section to use for DECL.  RELOC is true if its value contains
+   any relocatable expression.  */
+
+mips_select_section (decl, reloc)
+     tree decl;
+     int reloc;
+{
+  int size = int_size_in_bytes (TREE_TYPE (decl));
+
+  if (TARGET_EMBEDDED_DATA)
+    {
+      /* For embedded applications, always put an object in read-only data
+        if possible, in order to reduce RAM usage.  */
+
+      if (((TREE_READONLY (decl) && !TREE_SIDE_EFFECTS (decl)
+           && DECL_INITIAL (decl)
+           && (DECL_INITIAL (decl) == error_mark_node
+               || TREE_CONSTANT (DECL_INITIAL (decl))))
+          /* Deal with calls from output_constant_def_contents.  */
+          || (TREE_CODE (decl) != VAR_DECL
+              && (TREE_CODE (decl) != STRING_CST
+                  || !flag_writable_strings)))
+         && ! (flag_pic && reloc))
+       rdata_section ();
+      else if (size > 0 && size <= mips_section_threshold)
+       sdata_section ();
+      else
+       data_section ();
+    }
+  else
+    {
+      /* For hosted applications, always put an object in small data if
+        possible, as this gives the best performance.  */
+
+      if (size > 0 && size <= mips_section_threshold)
+       sdata_section ();
+      else if (((TREE_READONLY (decl) && !TREE_SIDE_EFFECTS (decl)
+                && DECL_INITIAL (decl)
+                && (DECL_INITIAL (decl) == error_mark_node
+                    || TREE_CONSTANT (DECL_INITIAL (decl))))
+               /* Deal with calls from output_constant_def_contents.  */
+               || (TREE_CODE (decl) != VAR_DECL
+                   && (TREE_CODE (decl) != STRING_CST
+                       || !flag_writable_strings)))
+              && ! (flag_pic && reloc))
+       rdata_section ();
+      else
+       data_section ();
+    }
+}