[Bug middle-end/53647] [4.8 Regression] gcc.c-torture/compile/20011229-1.c and gcc.c-torture/compile/pr25311.c

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53647

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |ubizjak at gmail dot com

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2012-06-12 17:56:04 
UTC ---
i386.c has

  maybe_set_param_value (PARAM_L1_CACHE_LINE_SIZE, ix86_cost->prefetch_block,
                         global_options.x_param_values,
                         global_options_set.x_param_values);

But some costs have

  0,                                    /* size of l1 cache  */
  0,                                    /* size of l2 cache  */
  0,                                    /* size of prefetch block */
  0,                                    /* number of parallel prefetches */

and we get param_align == 0:

+  int param_align = PARAM_VALUE (PARAM_L1_CACHE_LINE_SIZE);
+  unsigned param_align_bits = (unsigned) (param_align * BITS_PER_UNIT);
+  gimple_stmt_iterator gsi;