re PR tree-optimization/33655 (ICE in bitfield_overlaps_p, at tree-sra.c:2901)

gcc/ChangeLog:
PR tree-optimization/33655
* tree-sra.c (bitfield_overlaps_p): Handle array and complex
elements.
gcc/testsuite/ChangeLog:
PR tree-optimization/33655
* gcc.dg/torture/pr33655.c: New.

From-SVN: r129052

gcc/ChangeLog

 2007-10-06  Alexandre Oliva  <aoliva@redhat.com>
 
+	PR tree-optimization/33655
+	* tree-sra.c (bitfield_overlaps_p): Handle array and complex
+	elements.
+
+2007-10-06  Alexandre Oliva  <aoliva@redhat.com>
+
 	PR tree-optimization/33572
 	* tree-cfg.c (verify_stmts): Check for missing PHI defs.
 	* tree-inline.c (update_ssa_across_eh_edges): Renamed to...

gcc/testsuite/ChangeLog

 2007-10-06  Alexandre Oliva  <aoliva@redhat.com>
 
+	PR tree-optimization/33655
+	* gcc.dg/torture/pr33655.c: New.
+
+2007-10-06  Alexandre Oliva  <aoliva@redhat.com>
+
 	PR tree-optimization/33572
 	* g++.dg/torture/pr33572.C: New.
 

gcc/testsuite/gcc.dg/torture/pr33655.c

+/* { dg-do compile } */
+typedef struct {
+    unsigned long attr;
+    int chars[2];
+} cchar_t;
+typedef struct _win_st {
+    cchar_t _bkgrnd;
+} WINDOW;
+void render_char(WINDOW *win, cchar_t ch)
+{
+    if ((ch).chars[0] == L' '
+        && (ch).chars[1] == L'\0')
+        win->_bkgrnd = ch;
+}

gcc/tree-sra.c

@@ -2897,6 +2897,11 @@ bitfield_overlaps_p (tree blen, tree bpos, struct sra_elt *fld,
       flen = fold_convert (bitsizetype, TREE_OPERAND (fld->element, 1));
       fpos = fold_convert (bitsizetype, TREE_OPERAND (fld->element, 2));
     }
+  else if (TREE_CODE (fld->element) == INTEGER_CST)
+    {
+      flen = fold_convert (bitsizetype, TYPE_SIZE (fld->type));
+      fpos = size_binop (MULT_EXPR, flen, fld->element);
+    }
   else
     gcc_unreachable ();