[Bug target/43902] suboptimal MIPS widening multiply accumulate

[bernds at gcc dot gnu dot org]

------- Comment #14 from bernds at gcc dot gnu dot org  2010-06-29 13:44 -------
Subject: Bug 43902

Author: bernds
Date: Tue Jun 29 13:43:57 2010
New Revision: 161533

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=161533
Log:
        PR target/43902
        * config/arm/arm.md (maddsidi4, umaddsidi4): New expanders.
        (maddhisi4): Renamed from mulhisi3addsi.  Operands renumbered.
        (maddhidi4): Likewise.

testsuite/
        PR target/43902
        * gcc.target/arm/wmul-1.c: Test for smlabb instead of smulbb.
        * gcc.target/arm/wmul-3.c: New test.
        * gcc.target/arm/wmul-4.c: New test.


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


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43902