rs6000.c (rs6000_override_options): Increase maximum skip to 15.

	* config/rs6000/rs6000.c (rs6000_override_options): Increase
	maximum skip to 15.  Set function alignment, jump alignment, and
	loop alignment to 16 for processors that form dispatch groups.
	(rs6000_rtx_costs): Outer code is used.

From-SVN: r86670

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5afcde684d64f965b2d79c64d139a87b139435b6..fdf25f2b52def700f68e1e515746a946cf8362e7 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2004-08-27  David Edelsohn  <edelsohn@gnu.org>
+
+       * config/rs6000/rs6000.c (rs6000_override_options): Increase
+       maximum skip to 15.  Set function alignment, jump alignment, and
+       loop alignment to 16 for processors that form dispatch groups.
+       (rs6000_rtx_costs): Outer code is used.
+
 2004-08-27  Nathan Sidwell  <nathan@codesourcery.com>
 
        * stor-layout.c (sizetype_set): Remove.

diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 49fe3bac77fe17c1114823f353a2c8e704caaad1..0ec9c57c6eb7c8cb0b4573cb83431a7c8c1cfbd5 100644 (file)
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -1429,9 +1429,23 @@ rs6000_override_options (const char *default_cpu)
       targetm.asm_out.unaligned_op.di = NULL;
     }
 
-  /* Set maximum branch target alignment at two instructions, eight bytes.  */
-  align_jumps_max_skip = 8;
-  align_loops_max_skip = 8;
+  /* Set branch target alignment, if not optimizing for size.  */
+  if (!optimize_size)
+    {
+      if (rs6000_sched_groups)
+       {
+         if (align_functions <= 0)
+           align_functions = 16;
+         if (align_jumps <= 0)
+           align_jumps = 16;
+         if (align_loops <= 0)
+           align_loops = 16;
+       }
+      if (align_jumps_max_skip <= 0)
+       align_jumps_max_skip = 15;
+      if (align_loops_max_skip <= 0)
+       align_loops_max_skip = 15;
+    }
 
   /* Arrange to save and restore machine status around nested functions.  */
   init_machine_status = rs6000_init_machine_status;
@@ -17070,8 +17084,7 @@ rs6000_binds_local_p (tree decl)
    scanned.  In either case, *TOTAL contains the cost result.  */
 
 static bool
-rs6000_rtx_costs (rtx x, int code, int outer_code ATTRIBUTE_UNUSED,
-                 int *total)
+rs6000_rtx_costs (rtx x, int code, int outer_code, int *total)
 {
   enum machine_mode mode = GET_MODE (x);