[Bug rtl-optimization/68910] [5/6 regression] huge stack frame and poor code with instruction scheduling at -O2

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68910

--- Comment #12 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Sat Dec 19 21:59:47 2015
New Revision: 231852

URL: https://gcc.gnu.org/viewcvs?rev=231852&root=gcc&view=rev
Log:
        PR rtl-optimization/68910
        * emit-rtl.c (set_unique_reg_note) <>REG_EQUAL>: Add bypass for USEs.
        * config/sparc/sparc.md (anddi3): Enable only in 64-bit mode.
        (iordi3): Likewise.
        (xordi3): Likewise.
        (one_cmpldi2): Likewise.
        (*anddi3_sp32): Delete.
        (*and_not_di_sp32): Likewise.
        (*iordi3_sp32): Likewise.
        (*or_not_di_sp32): Likewise.
        (*xordi3_sp32): Likewise.
        (*xor_not_di_sp32): Likewise.
        (32-bit DImode logical operations splitter): Likewise.
        (*one_cmpldi2_sp32): Likewise.

Added:
    branches/gcc-5-branch/gcc/testsuite/gcc.target/sparc/20151219-1.c
      - copied unchanged from r231851,
trunk/gcc/testsuite/gcc.target/sparc/20151219-1.c
Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/config/sparc/sparc.md
    branches/gcc-5-branch/gcc/emit-rtl.c
    branches/gcc-5-branch/gcc/testsuite/ChangeLog