(init_expr_once): Set direct_load and direct_store if SOME hard register can be loade...

(init_expr_once): Set direct_load and direct_store if SOME hard
register can be loaded or stored; not just if the first one we pick
can be.

From-SVN: r1910

diff --git a/gcc/expr.c b/gcc/expr.c
index 315474d835f17bb0347cd4cddb07096feca867a7..2a94dcac4d76f41825c1bfb709b1b402da1a62af 100644 (file)
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -155,23 +155,28 @@ init_expr_once ()
       direct_load[(int) mode] = direct_store[(int) mode] = 0;
       PUT_MODE (mem, mode);
 
-      /* Find a register that can be used in this mode, if any.  */
-      for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
-       if (HARD_REGNO_MODE_OK (regno, mode))
-         break;
+      /* See if there is some register that can be used in this mode and
+        directly loaded or stored from memory.  */
 
-      if (regno == FIRST_PSEUDO_REGISTER)
-       continue;
+      for (regno = 0; regno < FIRST_PSEUDO_REGISTER
+          && (direct_load[(int) mode] == 0 || direct_store[(int) mode] == 0);
+          regno++)
+       {
+         if (! HARD_REGNO_MODE_OK (regno, mode))
+           continue;
 
-      reg = gen_rtx (REG, mode, regno);
+         reg = gen_rtx (REG, mode, regno);
 
-      SET_SRC (pat) = mem;
-      SET_DEST (pat) = reg;
-      direct_load[(int) mode] = (recog (pat, insn, &num_clobbers)) >= 0;
+         SET_SRC (pat) = mem;
+         SET_DEST (pat) = reg;
+         if (recog (pat, insn, &num_clobbers) >= 0)
+           direct_load[(int) mode] = 1;
 
-      SET_SRC (pat) = reg;
-      SET_DEST (pat) = mem;
-      direct_store[(int) mode] = (recog (pat, insn, &num_clobbers)) >= 0;
+         SET_SRC (pat) = reg;
+         SET_DEST (pat) = mem;
+         if (recog (pat, insn, &num_clobbers) >= 0)
+           direct_store[(int) mode] = 1;
+       }
 
       movstr_optab[(int) mode] = CODE_FOR_nothing;
     }