emit-rtl.c (const_double_htab_hash): Use mode in the hash.

2003-01-28  Dale Johannesen  <dalej@apple.com>
        * emit-rtl.c (const_double_htab_hash):  Use mode in the hash.
        * loop.c (scan_loop):  Move movables on -Os rich-register targets.
        * config/rs6000/rs6000.md (sibcall*):  Use match_operand for LR.

From-SVN: r62004

1 files changed, 5 insertions, 3 deletions

diff --git a/gcc/loop.c b/gcc/loop.c
index 50c1692..b366b54 100644
--- a/gcc/loop.c
+++ b/gcc/loop.c
@@ -1108,10 +1108,12 @@ scan_loop (loop, flags)
   /* Now consider each movable insn to decide whether it is worth moving.
      Store 0 in regs->array[I].set_in_loop for each reg I that is moved.
 
-     Generally this increases code size, so do not move moveables when
-     optimizing for code size.  */
+     For machines with few registers this increases code size, so do not
+     move moveables when optimizing for code size on such machines.  
+     (The 18 below is the value for i386.)  */
 
-  if (! optimize_size)
+  if (!optimize_size 
+      || (reg_class_size[GENERAL_REGS] > 18 && !loop_info->has_call))
     {
       move_movables (loop, movables, threshold, insn_count);