[Bug target/61360] [5 Regression] ICE: in lra_update_insn_recog_data, at lra.c:1363 with -mtune=bdver4

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61360

--- Comment #11 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to GGanesh from comment #9)
> Patch that fixes this issue has been submitted 
> https://gcc.gnu.org/ml/gcc-patches/2014-08/msg02179.html
> 
> The idea is to prohibit changes to the "enabled" attribute during lra and
> reload pass.

Here's a small testcase that still ICE's even with your patch applied:

 % cat utils.i
int a, b, c, e, f, g, h;
long *d;
__attribute__((cold)) void fn1() {
  int i = g | 1;
  for (; g; h++) {
    for (; a; e++) d[0] = c;
    if (0.002 * i) break;
    for (; b; f++) d[h] = 0;
  }
}

 % gcc -march=amdfam10 -O2 -c utils.i
utils.i: In function ‘fn1’:
utils.i:10:1: internal compiler error: in lra_update_insn_recog_data, at
lra.c:1223
 }
 ^
0x8ddb6c lra_update_insn_recog_data(rtx_insn*)
        ../../gcc/gcc/lra.c:1222
0x8f4595 eliminate_regs_in_insn
        ../../gcc/gcc/lra-eliminations.c:1077
0x8f4595 process_insn_for_elimination
        ../../gcc/gcc/lra-eliminations.c:1344
0x8f4595 lra_eliminate(bool, bool)
        ../../gcc/gcc/lra-eliminations.c:1408
0x8df81e lra(_IO_FILE*)
        ../../gcc/gcc/lra.c:2278
0x89ddf6 do_reload
        ../../gcc/gcc/ira.c:5311
0x89ddf6 execute
        ../../gcc/gcc/ira.c:5470
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.
>From gcc-bugs-return-461355-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Sep 06 13:11:08 2014
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Subject: [Bug c++/63194] New: [4.9/5 Regression] ICE in maybe_explain_implicit_delete, at cp/method.c:1552
Date: Sat, 06 Sep 2014 13:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63194

            Bug ID: 63194
           Summary: [4.9/5 Regression] ICE in
                    maybe_explain_implicit_delete, at cp/method.c:1552
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: trippels at gcc dot gnu.org
                CC: jason at gcc dot gnu.org

Reduced from a huge boost testcase:

markus@x4 tmp % cat horzcollisionbar.ii
template <int>
class A {
 public:
  A() noexcept(noexcept(0)) = default;
};
class B {
  A<0> m_points;
};
void fn1(A<0>, A<0>) { B(); }

markus@x4 tmp % g++ -c -std=c++11 horzcollisionbar.ii
horzcollisionbar.ii: In function ‘void fn1(A<0>, A<0>)’:
horzcollisionbar.ii:9:26: error: use of deleted function ‘B::B()’
 void fn1(A<0>, A<0>) { B(); }
                          ^
horzcollisionbar.ii:6:7: note: ‘B::B()’ is implicitly deleted because the
default definition would be ill-formed:
 class B {
       ^
horzcollisionbar.ii:6:7: error: use of deleted function ‘A<<anonymous> >::A()
[with int <anonymous> = 0]’
horzcollisionbar.ii:4:3: internal compiler error: in
maybe_explain_implicit_delete, at cp/method.c:1552
   A() noexcept(noexcept(0)) = default;
   ^
0x6ea0d8 maybe_explain_implicit_delete(tree_node*)
        ../../gcc/gcc/cp/method.c:1552
0x653df0 mark_used(tree_node*, int)
        ../../gcc/gcc/cp/decl2.c:4877
0x57233e build_over_call
        ../../gcc/gcc/cp/call.c:7019
0x57df65 build_new_method_call_1
        ../../gcc/gcc/cp/call.c:8098
0x57df65 build_new_method_call(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, tree_node*, int, tree_node**, int)
        ../../gcc/gcc/cp/call.c:8168
0x6e00ef locate_fn_flags
        ../../gcc/gcc/cp/method.c:906
0x6e2eca walk_field_subobs
        ../../gcc/gcc/cp/method.c:1193
0x6e3a34 synthesized_method_walk
        ../../gcc/gcc/cp/method.c:1435
0x6e9f7f maybe_explain_implicit_delete(tree_node*)
        ../../gcc/gcc/cp/method.c:1541
0x653df0 mark_used(tree_node*, int)
        ../../gcc/gcc/cp/decl2.c:4877
0x572cc2 build_over_call
        ../../gcc/gcc/cp/call.c:7381
0x57df65 build_new_method_call_1
        ../../gcc/gcc/cp/call.c:8098
0x57df65 build_new_method_call(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, tree_node*, int, tree_node**, int)
        ../../gcc/gcc/cp/call.c:8168
0x57eed9 build_special_member_call(tree_node*, tree_node*, vec<tree_node*,
va_gc, vl_embed>**, tree_node*, int, int)
        ../../gcc/gcc/cp/call.c:7712
0x6d83ab build_value_init(tree_node*, int)
        ../../gcc/gcc/cp/init.c:350
0x620e74 build_functional_cast(tree_node*, tree_node*, int)
        ../../gcc/gcc/cp/typeck2.c:1928
0x687643 cp_parser_functional_cast
        ../../gcc/gcc/cp/parser.c:23581
0x68118b cp_parser_postfix_expression
        ../../gcc/gcc/cp/parser.c:5936
0x683e73 cp_parser_unary_expression
        ../../gcc/gcc/cp/parser.c:7287
0x684c38 cp_parser_binary_expression
        ../../gcc/gcc/cp/parser.c:8030
Please submit a full bug report,
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Started with r203989.
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Subject: [Bug c++/63194] [5 Regression] ICE in maybe_explain_implicit_delete, at cp/method.c:1552
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idc194

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.8.3, 4.9.0
            Summary|[4.9/5 Regression] ICE in   |[5 Regression] ICE in
                   |maybe_explain_implicit_dele |maybe_explain_implicit_dele
                   |te, at cp/method.c:1552     |te, at cp/method.c:1552
      Known to fail|                            |5.0

--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Actually gcc-4.9 compiles the testcase without any warning.