[Bug target/66731] vnmul, fnmul patterns incorrect for -frounding-math

[nsz at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66731

--- Comment #4 from nsz at gcc dot gnu.org ---
Author: nsz
Date: Mon Aug  3 11:12:00 2015
New Revision: 226496

URL: https://gcc.gnu.org/viewcvs?rev=226496&root=gcc&view=rev
Log:
[ARM] PR target/66731 Fix vnmul insn with -frounding-math

gcc:

        PR target/66731
        * config/arm/vfp.md (negmuldf3_vfp): Add new pattern.
        (negmulsf3_vfp): Likewise.
        (muldf3negdf_vfp): Disable for -frounding-math.
        (mulsf3negsf_vfp): Likewise.
        * config/arm/arm.c (arm_new_rtx_costs): Fix NEG cost for VNMUL,
        fix MULT cost with -frounding-math.

gcc/testsuite:

        PR target/66731
        * gcc.target/arm/vnmul-1.c: New.
        * gcc.target/arm/vnmul-2.c: New.
        * gcc.target/arm/vnmul-3.c: New.
        * gcc.target/arm/vnmul-4.c: New.


Added:
    trunk/gcc/testsuite/gcc.target/arm/vnmul-1.c
    trunk/gcc/testsuite/gcc.target/arm/vnmul-2.c
    trunk/gcc/testsuite/gcc.target/arm/vnmul-3.c
    trunk/gcc/testsuite/gcc.target/arm/vnmul-4.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/arm/arm.c
    trunk/gcc/config/arm/vfp.md
    trunk/gcc/testsuite/ChangeLog