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

[ubizjak at gmail dot com]

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

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-11-26
     Ever confirmed|0                           |1

--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
Similar to PR54061.

We have to use IGNORED_DWARF_REGNUM for registers that are otherwise valid, but
we can't generate debug information for them. Like this:

int const dbx64_register_map[FIRST_PSEUDO_REGISTER] =
{
  /* general regs */
  0, 1, 2, 3, 4, 5, 6, 7,
  /* fp regs */
  33, 34, 35, 36, 37, 38, 39, 40,
  /* arg, flags, fpsr, frame */
  IGNORED_DWARF_REGNUM, IGNORED_DWARF_REGNUM,
  IGNORED_DWARF_REGNUM, IGNORED_DWARF_REGNUM,
  /* SSE */
  17, 18, 19, 20, 21, 22, 23, 24,
  /* MMX */
  41, 42, 43, 44, 45, 46, 47, 48,
  /* extended integer registers */
  8, 9, 10, 11, 12, 13, 14, 15,
  /* extended SSE registers */
  25, 26, 27, 28, 29, 30, 31, 32,
  /* AVX-512 registers 16-23 */
  67, 68, 69, 70, 71, 72, 73, 74,
  /* AVX-512 registers 24-31 */
  75, 76, 77, 78, 79, 80, 81, 82,
  /* Mask registers */
  118, 119, 120, 121, 122, 123, 124, 125
};