[Bug target/88178] [9 Regression] ICE in dbx_reg_number, at dwarf2out.c:13659

[uros at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88178

--- Comment #4 from uros at gcc dot gnu.org ---
Author: uros
Date: Mon Nov 26 20:50:57 2018
New Revision: 266480

URL: https://gcc.gnu.org/viewcvs?rev=266480&root=gcc&view=rev
Log:
        PR target/88178
        * config/i386/i386.c (dbx_register_map): Use IGNORED_DWARF_REGNUM
        for registers for which no debug information can be generated.
        Use INVALID_REGNUM for non-existent registers.
        (dbx64_register_map): Ditto.
        (svr4_dbx_register_map): Ditto.

testsuite/ChangeLog:

        PR target/88178
        * gcc.target/pr88178.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/i386/pr88178.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/testsuite/ChangeLog