[Bug rtl-optimization/67029] [5/6 regression] gcc-5.2.0 unable to find a register to spill with O3 fsched-pressure fschedule-insns

[hjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67029

--- Comment #13 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Fri Aug  7 16:18:09 2015
New Revision: 226724

URL: https://gcc.gnu.org/viewcvs?rev=226724&root=gcc&view=rev
Log:
Add alternative_mask to ira_implicitly_set_insn_hard_regs

Since ira_implicitly_set_insn_hard_regs may be called outside of
ira-lives.c, it can't use the local variable, preferred_alternatives.
This patch adds an alternative_mask argument to
ira_implicitly_set_insn_hard_regs.

gcc/

        PR rtl-optimization/67029
        * ira-color.c: Include "recog.h" before including "ira-int.h".
        * target-globals.c: Likewise.
        * ira-lives.c (ira_implicitly_set_insn_hard_regs): Add an
        adds an alternative_mask argument and use it instead of
        preferred_alternatives.
        * ira.h (ira_implicitly_set_insn_hard_regs): Moved to ...
        * ira-int.h (ira_implicitly_set_insn_hard_regs): Here.
        * sched-deps.c: Include "ira-int.h" after including "ira.h".
        (sched_analyze_insn): Update call to
        ira_implicitly_set_insn_hard_regs.
        * sel-sched.c: Include "ira-int.h" after including "ira.h".
        (implicit_clobber_conflict_p): Update call to
        ira_implicitly_set_insn_hard_regs.

gcc/testsuite/

        PR rtl-optimization/67029
        * gcc.dg/pr67029.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr67029.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ira-color.c
    trunk/gcc/ira-int.h
    trunk/gcc/ira-lives.c
    trunk/gcc/ira.h
    trunk/gcc/sched-deps.c
    trunk/gcc/sel-sched.c
    trunk/gcc/target-globals.c
    trunk/gcc/testsuite/ChangeLog