[Bug target/67989] [5/6 Regression] g++ ICE on armel valid code

["ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67989

--- Comment #6 from ktkachov at gcc dot gnu.org ---
Created attachment 36561
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36561&action=edit
Reduced testcase

Attaching reduced testcase, here's the full ICE backtrace.

Can be reproduced with -O2 -std=c++11 -march=armv4t -marm


besttry.cpp: In member function ‘void
lldb::SBAddress::SetAddress(lldb::SBSection, lldb::addr_t)’:
besttry.cpp:27:23: internal compiler error: in emit_move_insn, at expr.c:3553
         __atomic_load (&_M_i, &tmp, __m);
                       ^
0x8135af emit_move_insn(rtx_def*, rtx_def*)
        $SRC/gcc/expr.c:3552
0x9763c1 expand_atomic_compare_and_swap(rtx_def**, rtx_def**, rtx_def*,
rtx_def*, rtx_def*, bool, memmodel, memmodel)
        $SRC/gcc/optabs.c:5907
0x976a22 expand_atomic_load(rtx_def*, rtx_def*, memmodel)
        $SRC/gcc/optabs.c:6019
0x71e9cf expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
        $SRC/gcc/builtins.c:6738
0x810a85 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        $SRC/gcc/expr.c:10474
0x73bded expand_expr
        $SRC/gcc/expr.h:255
0x73bded expand_call_stmt
        $SRC/gcc/cfgexpand.c:2647
0x73bded expand_gimple_stmt_1
        $SRC/gcc/cfgexpand.c:3534
0x73bded expand_gimple_stmt
        $SRC/gcc/cfgexpand.c:3697
0x73cd89 expand_gimple_tailcall
        $SRC/gcc/cfgexpand.c:3744
0x73cd89 expand_gimple_basic_block
        $SRC/gcc/cfgexpand.c:5677
0x741dde execute
        $SRC/gcc/cfgexpand.c:6286
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.
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From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/67989] [4.9/5/6 Regression] g++ ICE on armel valid code
Date: Thu, 22 Oct 2015 12:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idg989

ktkachov at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
            Summary|[5/6 Regression] g++ ICE on |[4.9/5/6 Regression] g++
                   |armel valid code            |ICE on armel valid code
      Known to fail|                            |4.9.4

--- Comment #7 from ktkachov at gcc dot gnu.org ---
Btw, I see the ICE on 4.9 as well