[Bug rtl-optimization/61522] New: [4.10 regression] ICE while building libgcc in LRA

[Bug rtl-optimization/61522] New: [4.10 regression] ICE while building libgcc in LRA

[ramana at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61522

            Bug ID: 61522
           Summary: [4.10 regression] ICE while building libgcc in LRA
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ramana at gcc dot gnu.org

./cc1 -O2 -march=armv7-a fixed-bit.i

#0  0x00000000 in ?? ()
#1  0x0052b152 in assign_by_spills () at /work/gcc/gcc/lra-assigns.c:1434
#2  0x0052b3b6 in lra_assign () at /work/gcc/gcc/lra-assigns.c:1499
#3  0x0052631c in lra (f=0x0) at /work/gcc/gcc/lra.c:2230
#4  0x004e6a04 in do_reload () at /work/gcc/gcc/ira.c:5325
#5  0x004e6d66 in (anonymous namespace)::pass_reload::execute (this=0x1104d20)
at /work/gcc/gcc/ira.c:5486
#6  0x0059ca64 in execute_one_pass (pass=0x1104d20) at
/work/gcc/gcc/passes.c:2180
#7  0x0059cc3a in execute_pass_list_1 (pass=0x1104d20) at
/work/gcc/gcc/passes.c:2233
#8  0x0059cc5c in execute_pass_list_1 (pass=0x11040c0) at
/work/gcc/gcc/passes.c:2234
#9  0x0059cc86 in execute_pass_list (fn=0xb67cc820, pass=0x1101cc0) at
/work/gcc/gcc/passes.c:2244
#10 0x002fea08 in expand_function (node=0xb697fc40) at
/work/gcc/gcc/cgraphunit.c:1787
#11 0x002feef8 in expand_all_functions () at /work/gcc/gcc/cgraphunit.c:1921
#12 0x002ff760 in compile () at /work/gcc/gcc/cgraphunit.c:2265
#13 0x002ff8b2 in finalize_compilation_unit () at
/work/gcc/gcc/cgraphunit.c:2342
#14 0x001b30ea in c_write_global_declarations () at
/work/gcc/gcc/c/c-decl.c:10452
#15 0x006629d2 in compile_file () at /work/gcc/gcc/toplev.c:562
#16 0x00664de4 in do_compile () at /work/gcc/gcc/toplev.c:1918
#17 0x00664f64 in toplev_main (argc=4, argv=0xbefff484) at
/work/gcc/gcc/toplev.c:1994
#18 0x00bf8dba in main (argc=4, argv=0xbefff484) at /work/gcc/gcc/main.c:36

[Bug rtl-optimization/61522] [4.10 regression] ICE while building libgcc in LRA

[ramana at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61522

Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
             Target|                            |arm-none-linux-gnueabihf
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-06-16
      Known to work|                            |4.9.0
     Ever confirmed|0                           |1

[Bug rtl-optimization/61522] [4.10 regression] ICE while building libgcc in LRA

[ramana at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61522

Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |christophe.lyon at st dot com

--- Comment #1 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
*** Bug 61521 has been marked as a duplicate of this bug. ***

[Bug rtl-optimization/61522] [4.10 regression] ICE while building libgcc in LRA

[ramana at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61522

--- Comment #2 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Same failure also with 

./cc1 -O2 -fPIC -march=armv7-a test.c


$> cat test.c


typedef int(__kernel_cmpxchg64_t)(const long long *oldval,
                                  const long long *newval, long long *ptr);
long long __attribute__((visibility("hidden")))
__sync_fetch_and_nand_8(long long *ptr, long long val) {
  int failure;
  long long tmp, tmp2;
  do {
    tmp = *ptr;
    tmp2 = ~(tmp & val);
    failure = (*(__kernel_cmpxchg64_t *)0xffff0f60)(&tmp, &tmp2, ptr);
  } while (failure != 0);
}

[Bug rtl-optimization/61522] [4.10 regression] ICE while building libgcc in LRA

[ramana at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61522

--- Comment #3 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Appears to begin with


Commit 211655:
2014-06-13  Vladimir Makarov  <vmakarov@redhat.com>

        * lra-assign.c (assign_by_spills): Add code to assign vector regs
        to inheritance pseudos.
        * config/i386/i386.c (ix86_spill_class): Add check on NO_REGS.

causes GCC trunk to fail to build on ARM & AArch64 targets.

[Bug rtl-optimization/61522] [4.10 regression] ICE while building libgcc in LRA

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61522

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.10.0

[Bug rtl-optimization/61522] [4.10 regression] ICE while building libgcc in LRA

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61522

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
              if (lra_reg_info[regno].restore_regno < 0
                  || ! bitmap_bit_p (&lra_inheritance_pseudos, regno)
                  || (spill_class
                      = ((enum reg_class)
                         targetm.spill_class
                         ((reg_class_t) rclass,
                          PSEUDO_REGNO_MODE (regno)))) == NO_REGS)


doesn't check if targetm.spill_class is non-NULL

[Bug rtl-optimization/61522] [4.10 regression] ICE while building libgcc in LRA

[ramana at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61522

Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED

[Bug rtl-optimization/61522] [4.10 regression] ICE while building libgcc in LRA

[vmakarov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61522

--- Comment #5 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Mon Jun 16 15:55:03 2014
New Revision: 211711

URL: https://gcc.gnu.org/viewcvs?rev=211711&root=gcc&view=rev
Log:
2014-06-16  Vladimir Makarov  <vmakarov@redhat.com>

    PR rtl-optimization/61522
    * lra-assigns.c (assign_by_spills): Check null
    targetm.spill_class.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/lra-assigns.c

[Bug rtl-optimization/61522] [4.10 regression] ICE while building libgcc in LRA

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61522

ktkachov at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
                 CC|                            |ktkachov at gcc dot gnu.org
         Resolution|---                         |FIXED

--- Comment #6 from ktkachov at gcc dot gnu.org ---
Thus fixed it seems...