[Bug target/85950] Unsafe-math-optimizations regresses optimization using SSE4.1 roundss

[uros at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85950

--- Comment #8 from uros at gcc dot gnu.org ---
Author: uros
Date: Thu May 31 22:09:39 2018
New Revision: 261043

URL: https://gcc.gnu.org/viewcvs?rev=261043&root=gcc&view=rev
Log:
        PR target/85950
        * config/i386/i386.md (l<rounding_insn><MODEF:mode><SWI48:mode>2):
        Enable for TARGET_SSE4_1 and generate rounds{s,d} and cvtts{s,d}2si{,q}
        sequence.
        (sse4_1_round<mode>2): Use nonimmediate_operand
        for operand 1 predicate.

testsuite/ChangeLog:

        PR target/85950
        * gcc.target/i386/pr85950.c: New test.


Added:
    branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/pr85950.c
Modified:
    branches/gcc-8-branch/gcc/ChangeLog
    branches/gcc-8-branch/gcc/config/i386/i386.md
    branches/gcc-8-branch/gcc/testsuite/ChangeLog