* expr.c (expand_expr_real_1) <VECTOR_CST>: For vector constants with

	integer modes, attempt to directly construct an integer constant.

	* fold-const.c (native_encode_vector): Determine the size of each
	element from the vector type instead of the first vector element.

	* tree.c (build_constructor_single): Mark a CONSTRUCTOR as constant,
	if all of its elements/components are constant.
	(build_constructor_from_list): Likewise.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@114815 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 5 insertions, 7 deletions

diff --git a/gcc/fold-const.c b/gcc/fold-const.c
index 5a65586794e..b54658ded62 100644
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -6934,12 +6934,13 @@ static int
 native_encode_vector (tree expr, unsigned char *ptr, int len)
 {
   int i, size, offset, count;
-  tree elem, elements;
+  tree itype, elem, elements;
 
-  size = 0;
   offset = 0;
   elements = TREE_VECTOR_CST_ELTS (expr);
   count = TYPE_VECTOR_SUBPARTS (TREE_TYPE (expr));
+  itype = TREE_TYPE (TREE_TYPE (expr));
+  size = GET_MODE_SIZE (TYPE_MODE (itype));
   for (i = 0; i < count; i++)
     {
       if (elements)
@@ -6952,18 +6953,15 @@ native_encode_vector (tree expr, unsigned char *ptr, int len)
 
       if (elem)
 	{
-	  size = native_encode_expr (elem, ptr+offset, len-offset);
-	  if (size == 0)
+	  if (native_encode_expr (elem, ptr+offset, len-offset) != size)
 	    return 0;
 	}
-      else if (size != 0)
+      else
 	{
 	  if (offset + size > len)
 	    return 0;
 	  memset (ptr+offset, 0, size);
 	}
-      else
-	return 0;
       offset += size;
     }
   return offset;