[Bug middle-end/37338] [4.4 Regression] gcc.dg/array-init-1.c

jakub at gcc dot gnu dot org gcc-bugzilla@gcc.gnu.org
Tue Sep 9 17:52:00 GMT 2008



------- Comment #2 from jakub at gcc dot gnu dot org  2008-09-09 17:50 -------
The problem here is that gimplify_init_constructor calls can_move_by_pieces,
and the default MOVE_BY_PIECES_P uses optimize_insn_for_speed_p:
#define MOVE_BY_PIECES_P(SIZE, ALIGN) \
  (move_by_pieces_ninsns (SIZE, ALIGN, MOVE_MAX_PIECES + 1) \
   < (unsigned int) MOVE_RATIO (optimize_insn_for_speed_p ()))

But during gimplification *crtl is cleared, so eventhough
optimize_function_for_speed_p (cfun) is true, crtl->maybe_hot_insn_p is false.

Should gimplify_init_constructor temporarily set crtl->maybe_hot_insn_p = true?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37338



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