[Bug target/80160] [7 regression] operand has impossible constraints

[bernds at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80160

--- Comment #7 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
Author: bernds
Date: Sat Mar 25 01:12:04 2017
New Revision: 246473

URL: https://gcc.gnu.org/viewcvs?rev=246473&root=gcc&view=rev
Log:
        PR rtl-optimization/80160
        PR rtl-optimization/80159
        * lra-assigns.c (must_not_spill_p): Tighten new test to also take
        reg_alternate_class into account.

        * gcc.target/i386/pr80160.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/i386/pr80160.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/lra-assigns.c
    trunk/gcc/testsuite/ChangeLog