[Bug rtl-optimization/39871] [4.3/4.4/4.5/4.6 regression] Code size increase on ARM due to poor register allocation

[bernds at gcc dot gnu dot org]

------- Comment #25 from bernds at gcc dot gnu dot org  2010-06-17 21:52 -------
Subject: Bug 39871

Author: bernds
Date: Thu Jun 17 21:51:55 2010
New Revision: 160947

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=160947
Log:
        PR rtl-optimization/39871
        * reload1.c (init_eliminable_invariants): For flag_pic, disable
        equivalences only for constants that aren't LEGITIMATE_PIC_OPERAND_P.
        (function_invariant_p): Rule out a plus of frame or arg pointer with
        a SYMBOL_REF.
        * ira.c (find_reg_equiv_invariant_const): Likewise.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ira.c
    trunk/gcc/reload1.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39871