PR middle-end/52750

	* tree-vect-generic.c (vector_element): Perform multiplication
	for pos in bitsizetype type instead of idx type.

	* gcc.c-torture/compile/pr52750.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_7-branch@185916 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 14873a8..4df376f 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2012-03-28  Jakub Jelinek  <jakub@redhat.com>
+
+       PR middle-end/52750
+       * tree-vect-generic.c (vector_element): Perform multiplication
+       for pos in bitsizetype type instead of idx type.
+
 2012-03-28  Georg-Johann Lay  <avr@gjlay.de>
 
        Backport from 2012-03-28 mainline r185910.

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 308c21b..fecd782 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2012-03-28  Jakub Jelinek  <jakub@redhat.com>
+
+       PR middle-end/52750
+       * gcc.c-torture/compile/pr52750.c: New test.
+
 2012-03-28  Georg-Johann Lay  <avr@gjlay.de>
 
        Backport from 2012-03-28 mainline r185910.

diff --git a/gcc/testsuite/gcc.c-torture/compile/pr52750.c b/gcc/testsuite/gcc.c-torture/compile/pr52750.c
new file mode 100644 (file)
index 0000000..36391ba
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr52750.c
@@ -0,0 +1,11 @@
+/* PR middle-end/52750 */
+
+typedef signed char V __attribute__((vector_size (32)));
+
+void
+foo (V *x)
+{
+  V m = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+         16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31};
+  *x = __builtin_shuffle (*x, m);
+}

diff --git a/gcc/tree-vect-generic.c b/gcc/tree-vect-generic.c
index 9dec8c6..be54710 100644 (file)
--- a/gcc/tree-vect-generic.c
+++ b/gcc/tree-vect-generic.c
@@ -1,5 +1,5 @@
 /* Lower vector operations to scalar operations.
-   Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010
+   Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -583,8 +583,9 @@ vector_element (gimple_stmt_iterator *gsi, tree vect, tree idx, tree *ptmpvec)
       else
         {
          tree size = TYPE_SIZE (vect_elt_type);
-          tree pos = fold_build2 (MULT_EXPR, TREE_TYPE (idx), idx, size);
-          return fold_build3 (BIT_FIELD_REF, vect_elt_type, vect, size, pos);
+         tree pos = fold_build2 (MULT_EXPR, bitsizetype, bitsize_int (index),
+                                 size);
+         return fold_build3 (BIT_FIELD_REF, vect_elt_type, vect, size, pos);
         }
     }