[Bug regression/59923] New: [4.9 Regression] ICE in maybe_record_trace_start, at dwarf2cfi.c:2239 with -mcpu=cortex-a15 -mthumb -O2 -fvisibility=hidden -g

[Bug regression/59923] New: [4.9 Regression] ICE in maybe_record_trace_start, at dwarf2cfi.c:2239 with -mcpu=cortex-a15 -mthumb -O2 -fvisibility=hidden -g

[Bernhard.Rosenkranzer at linaro dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59923

            Bug ID: 59923
           Summary: [4.9 Regression] ICE in maybe_record_trace_start, at
                    dwarf2cfi.c:2239 with -mcpu=cortex-a15 -mthumb -O2
                    -fvisibility=hidden -g
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: regression
          Assignee: unassigned at gcc dot gnu.org
          Reporter: Bernhard.Rosenkranzer at linaro dot org

Created attachment 31935
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31935&action=edit
test case

$ /tmp/android-toolchain-eabi/bin/arm-linux-androideabi-gcc -o test.o -c
ucmndata.i -mcpu=cortex-a15  -g  -mthumb -fno-strict-aliasing -O2
-fvisibility=hidden
external/icu4c/common/ucmndata.c: In function 'udata_checkCommonData_51':
external/icu4c/common/ucmndata.c:362:1: internal compiler error: in
maybe_record_trace_start, at dwarf2cfi.c:2239
 }
 ^
0x4f3020 ???
        ../sysdeps/x86_64/start.S:122
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.


This might be a duplicate of bug 59575, but the code triggering it seems to be
rather different (didn't have the time to reduce it yet though).

[Bug regression/59923] [4.9 Regression] ICE in maybe_record_trace_start, at dwarf2cfi.c:2239 with -mcpu=cortex-a15 -mthumb -O2 -fvisibility=hidden -g

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59923

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.9.0

[Bug regression/59923] [4.9 Regression] ICE in maybe_record_trace_start, at dwarf2cfi.c:2239 with -mcpu=cortex-a15 -mthumb -O2 -fvisibility=hidden -g

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59923

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 31982
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31982&action=edit
gcc49-pr59923.patch

This isn't a dup of PR59575, here the problem is that ce3 pass creates
cond_exec insn to restore an unwind info important register and adjust stack
pointer.
dwarf2 EH info can't express conditional restore and expressing conditional CFA
adjustment would be quite ugly there.

Untested fix attached, can anyone with an ARM box bootstrap/regtest it?

[Bug regression/59923] [4.9 Regression] ICE in maybe_record_trace_start, at dwarf2cfi.c:2239 with -mcpu=cortex-a15 -mthumb -O2 -fvisibility=hidden -g

[ktkachov at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59923

--- Comment #2 from ktkachov at gcc dot gnu.org ---
Patch bootstrapped ok on arm-none-linux-gnueabihf configured
--with-arch=armv7-a --with-fpu=neon-vfpv4 --with-mode=thumb --with-float=hard
--enable-languages=c,c++,fortran

Passed regtest too.

[Bug regression/59923] [4.9 Regression] ICE in maybe_record_trace_start, at dwarf2cfi.c:2239 with -mcpu=cortex-a15 -mthumb -O2 -fvisibility=hidden -g

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59923

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Jan 30 21:48:08 2014
New Revision: 207324

URL: http://gcc.gnu.org/viewcvs?rev=207324&root=gcc&view=rev
Log:
    PR target/59923
    * ifcvt.c (cond_exec_process_insns): Don't conditionalize
    frame related instructions.

    * gcc.target/arm/pr59923.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/arm/pr59923.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ifcvt.c
    trunk/gcc/testsuite/ChangeLog

[Bug regression/59923] [4.9 Regression] ICE in maybe_record_trace_start, at dwarf2cfi.c:2239 with -mcpu=cortex-a15 -mthumb -O2 -fvisibility=hidden -g

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59923

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.