[Bug rtl-optimization/63210] ira does not select the best register compared with gcc 4.8 for ARM THUMB1

[zqchen at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63210

--- Comment #2 from zqchen at gcc dot gnu.org ---
Author: zqchen
Date: Wed Sep 24 07:00:55 2014
New Revision: 215540

URL: https://gcc.gnu.org/viewcvs?rev=215540&root=gcc&view=rev
Log:
ChangeLog:
2014-09-24  Zhenqiang Chen  <zhenqiang.chen@arm.com>

    PR rtl-optimization/63210
    * ira-color.c (assign_hard_reg): Ignore conflict cost if the
    HARD_REGNO is not availabe for CONFLICT_A.

testsuite/ChangeLog:
2014-09-24  Zhenqiang Chen  <zhenqiang.chen@arm.com>

    * gcc.target/arm/pr63210.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/arm/pr63210.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ira-color.c
    trunk/gcc/testsuite/ChangeLog