[Bug target/87033] The compiler does not generate the LWAX instruction

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87033

--- Comment #2 from Michael Meissner <meissner at gcc dot gnu.org> ---
Author: meissner
Date: Mon Aug 20 23:46:37 2018
New Revision: 263678

URL: https://gcc.gnu.org/viewcvs?rev=263678&root=gcc&view=rev
Log:
[gcc]
2018-08-20  Michael Meissner  <meiss...@linux.ibm.com>

        PR target/87033
        * config/rs6000/rs6000.md (extendsi<mode>2): Change constraints
        from 'Y' to 'YZ' to enable the LWAX instruction to be generated
        for indexed loads.

[gcc/testsuite]
2018-08-20  Michael Meissner  <meiss...@linux.ibm.com>

        PR target/87033
        * gcc.target/powerpc/pr87033.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/powerpc/pr87033.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/rs6000/rs6000.md
    trunk/gcc/testsuite/ChangeLog