X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Fgenmodes.c;h=8b6f5bce96b937f71fe76d47916dee167d2bb59b;hp=dae7e38ebdb4b7d8181a4c8635f022d9cb72f013;hb=04df78dc71f8fb5861a65c301739b38569f87da4;hpb=4c8347147cf74af231cc5b0f11b41c5067970af4

diff --git a/gcc/genmodes.c b/gcc/genmodes.c
index dae7e38ebdb..8b6f5bce96b 100644
--- a/gcc/genmodes.c
+++ b/gcc/genmodes.c
@@ -63,7 +63,6 @@ struct mode_data
 
   struct mode_data *component;	/* mode of components */
   struct mode_data *wider;	/* next wider mode */
-  struct mode_data *wider_2x;	/* 2x wider mode */
 
   struct mode_data *contained;  /* Pointer to list of modes that have
 				   this mode as a component.  */
@@ -83,7 +82,7 @@ static struct mode_data *void_mode;
 static const struct mode_data blank_mode = {
   0, "<unknown>", MAX_MODE_CLASS,
   -1U, -1U, -1U, -1U,
-  0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0,
   "<unknown>", 0, 0, 0, 0
 };
 
@@ -790,7 +789,7 @@ calc_wider_mode (void)
 
   /* Allocate max_n_modes + 1 entries to leave room for the extra null
      pointer assigned after the qsort call below.  */
-  sortbuf = (struct mode_data **) alloca ((max_n_modes + 1) * sizeof (struct mode_data *));
+  sortbuf = XALLOCAVEC (struct mode_data *, max_n_modes + 1);
 
   for (c = 0; c < MAX_MODE_CLASS; c++)
     {
@@ -804,7 +803,6 @@ calc_wider_mode (void)
 	  for (prev = 0, m = modes[c]; m; m = next)
 	    {
 	      m->wider = void_mode;
-	      m->wider_2x = void_mode;
 
 	      /* this is nreverse */
 	      next = m->next;
@@ -827,7 +825,6 @@ calc_wider_mode (void)
 	  for (j = 0; j < i; j++)
 	    sortbuf[j]->next = sortbuf[j]->wider = sortbuf[j + 1];
 
-
 	  modes[c] = sortbuf[0];
 	}
     }
@@ -1062,6 +1059,21 @@ emit_mode_wider (void)
 		continue;
 	    }
 
+	  /* For vectors we want twice the number of components,
+	     with the same element type.  */
+	  if (m->cl == MODE_VECTOR_INT
+	      || m->cl == MODE_VECTOR_FLOAT
+	      || m->cl == MODE_VECTOR_FRACT
+	      || m->cl == MODE_VECTOR_UFRACT
+	      || m->cl == MODE_VECTOR_ACCUM
+	      || m->cl == MODE_VECTOR_UACCUM)
+	    {
+	      if (m2->ncomponents != 2 * m->ncomponents)
+		continue;
+	      if (m->component != m2->component)
+		continue;
+	    }
+
 	  break;
 	}
       if (m2 == void_mode)