2013-05-10 Marc Glisse <marc.glisse@inria.fr>

gcc/
	* stor-layout.c (element_precision): New function.
	* machmode.h (element_precision): Declare it.
	* tree.c (build_minus_one_cst): New function.
	(element_precision): Likewise.
	* tree.h (build_minus_one_cst): Declare new function.
	(element_precision): Likewise.
	* fold-const.c (operand_equal_p): Use element_precision.
	(fold_binary_loc): Handle vector types.
	* convert.c (convert_to_integer): Use element_precision.
	* gimple.c (iterative_hash_canonical_type): Handle complex and vectors
	separately.

gcc/c-family/
	* c-common.c (vector_types_convertible_p): No TYPE_PRECISION for
	vectors.

gcc/testsuite/
	* gcc.dg/vector-shift.c: New testcase.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@198772 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 12 insertions, 0 deletions

diff --git a/gcc/stor-layout.c b/gcc/stor-layout.c
index 5ad95b10030..6f6b3107841 100644
--- a/gcc/stor-layout.c
+++ b/gcc/stor-layout.c
@@ -453,6 +453,18 @@ get_mode_alignment (enum machine_mode mode)
   return MIN (BIGGEST_ALIGNMENT, MAX (1, mode_base_align[mode]*BITS_PER_UNIT));
 }
 
+/* Return the precision of the mode, or for a complex or vector mode the
+   precision of the mode of its elements.  */
+
+unsigned int
+element_precision (enum machine_mode mode)
+{
+  if (COMPLEX_MODE_P (mode) || VECTOR_MODE_P (mode))
+    mode = GET_MODE_INNER (mode);
+
+  return GET_MODE_PRECISION (mode);
+}
+
 /* Return the natural mode of an array, given that it is SIZE bytes in
    total and has elements of type ELEM_TYPE.  */