sparc.c (eligible_for_return_delay): Do not return false if there are call-saved...

	* config/sparc/sparc.c (eligible_for_return_delay): Do not return
	false if there are call-saved registers here...
	(sparc_can_use_return_insn_p): ...but here instead.
	(save_or_restore_regs): Fix thinko.
	(sparc_expand_prologue): Use current_function_is_leaf.
	(sparc_frame_pointer_required): Likewise.

From-SVN: r174011

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ab0121c99e44e9d00eab8c92ca77c7c1c5e1cc8e..70023d476c5f819f459ca53979d22fdc438de55b 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2011-05-21  Eric Botcazou  <ebotcazou@adacore.com>
+
+       * config/sparc/sparc.c (eligible_for_return_delay): Do not return
+       false if there are call-saved registers here...
+       (sparc_can_use_return_insn_p): ...but here instead.
+       (save_or_restore_regs): Fix thinko.
+       (sparc_expand_prologue): Use current_function_is_leaf.
+       (sparc_frame_pointer_required): Likewise.
+
 2011-05-20  Nick Clifton  <nickc@redhat.com>
 
        * config/rx/rx.h (HAVE_PRE_DECREMENT): Fix typo in macro name.

diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c
index 33b0234a332598f16dbdd529ba46950c6d2af843..949c4734f9e3fed3ae1307a80326b2b1d10f3e34 100644 (file)
--- a/gcc/config/sparc/sparc.c
+++ b/gcc/config/sparc/sparc.c
@@ -2767,11 +2767,6 @@ eligible_for_return_delay (rtx trial)
   if (get_attr_length (trial) != 1)
     return 0;
 
-  /* If there are any call-saved registers, we should scan TRIAL if it
-     does not reference them.  For now just make it easy.  */
-  if (num_gfregs)
-    return 0;
-
   /* If the function uses __builtin_eh_return, the eh_return machinery
      occupies the delay slot.  */
   if (crtl->calls_eh_return)
@@ -4093,7 +4088,7 @@ save_or_restore_regs (int low, int high, rtx base, int offset, int action)
            emit_move_insn (gen_rtx_REG (mode, regno), mem);
 
          /* Always preserve double-word alignment.  */
-         offset = (offset + 7) & -8;
+         offset = (offset + 8) & -8;
        }
     }
 
@@ -4200,7 +4195,7 @@ sparc_expand_prologue (void)
      example, the regrename pass has special provisions to not rename to
      non-leaf registers in a leaf function.  */
   sparc_leaf_function_p
-    = optimize > 0 && leaf_function_p () && only_leaf_regs_used ();
+    = optimize > 0 && current_function_is_leaf && only_leaf_regs_used ();
 
   /* Need to use actual_fsize, since we are also allocating
      space for our callee (and our own register save area).  */
@@ -4324,6 +4319,7 @@ bool
 sparc_can_use_return_insn_p (void)
 {
   return sparc_prologue_data_valid_p
+        && num_gfregs == 0
         && (actual_fsize == 0 || !sparc_leaf_function_p);
 }
 
@@ -9267,7 +9263,7 @@ sparc_expand_compare_and_swap_12 (rtx result, rtx mem, rtx oldval, rtx newval)
 bool
 sparc_frame_pointer_required (void)
 {
-  return !(leaf_function_p () && only_leaf_regs_used ());
+  return !(current_function_is_leaf && only_leaf_regs_used ());
 }
 
 /* The way this is structured, we can't eliminate SFP in favor of SP