[Bug middle-end/42574] [4.3/4.4/4.5/4.6 Regression] Address of global variable is calculated multiple times (missed CSE)

[mkuvyrkov at gcc dot gnu dot org]

------- Comment #14 from mkuvyrkov at gcc dot gnu dot org  2010-07-27 19:45 -------
Subject: Bug 42574

Author: mkuvyrkov
Date: Tue Jul 27 19:44:51 2010
New Revision: 162595

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=162595
Log:
        PR target/42495
        PR middle-end/42574
        * config/arm/arm.c (legitimize_pic_address): Use
        gen_calculate_pic_address pattern to emit calculation of PIC address.
        (will_be_in_index_register): New function.
        (arm_legitimate_address_outer_p, thumb2_legitimate_address_p,)
        (thumb1_legitimate_address_p): Use it provided !strict_p.
        * config/arm/arm.md (calculate_pic_address): New expand and split.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/arm/arm.c
    trunk/gcc/config/arm/arm.md


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42574