Re: RFA: one more version of the patch for PR61360

[Markus Trippelsdorf]

On 2014.10.02 at 09:17 +0200, Markus Trippelsdorf wrote:
> On 2014.09.26 at 16:31 -0400, Vladimir Makarov wrote:
> > I guess we achieved the consensus about the following patch to fix PR61360
> > 
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61360
> > 
> > The patch was successfully bootstrapped and tested (w/wo 
> > -march=amdfam10) on x86/x86-64.
> > 
> > Is it ok to commit to trunk?
> 
> I've tested your patch and unfortunately it doesn't work:
> 
> In file included from 
> /var/tmp/moz-build-dir/js/src/shell/Unified_cpp_js_src_shell0.cpp:15:0:
> /var/tmp/mozilla-central/js/src/shell/js.cpp: In function ‘void 
> Process(JSContext*, JSObject*, const char*, bool)’:
> /var/tmp/mozilla-central/js/src/shell/js.cpp:592:1: internal compiler error: 
> in lra_update_insn_recog_data, at lra.c:1221
>  }
>  ^
> 0xa9d9ec lra_update_insn_recog_data(rtx_insn*)
>         ../../gcc/gcc/lra.c:1220
> 0xab450f eliminate_regs_in_insn
>         ../../gcc/gcc/lra-eliminations.c:1077
> 0xab450f process_insn_for_elimination
>         ../../gcc/gcc/lra-eliminations.c:1344
> 0xab450f lra_eliminate(bool, bool)
>         ../../gcc/gcc/lra-eliminations.c:1408
> 0xa9f2da lra(_IO_FILE*)
>         ../../gcc/gcc/lra.c:2270
> 0xa5d659 do_reload
>         ../../gcc/gcc/ira.c:5311
> 0xa5d659 execute
>         ../../gcc/gcc/ira.c:5470

Testcase is attached:

 % g++ -c -march=amdfam10 -w -O2 js.ii
js.ii: In function ‘void RunFile(C)’:
js.ii:64:1: internal compiler error: in lra_update_insn_recog_data, at 
lra.c:1221

-- 
Markus

void printf(...);
class A;
template <typename>
class B;
class C {
 public:
  template <typename S>
  C(S);
};
template <class>
class D {
 public:
  void m_fn1(int);
};

template <>
class B<A> : public D<A> {};

typedef bool (*JSNative)(int *, unsigned, A *);
class F {
 public:
  B<A> m_fn2();
};
struct G {
  JSNative a;
};
struct H {
  H(int, int, int);
};
class I {
 public:
  int m_fn3();
};
class J {
 public:
  enum Result {};
  H helpOption;
  int usage;
  int ver;
  int descr;
  int descrWidth;
  int helpWidth;
  int nextArgument;
  int restArgument;
  J(int)
      : helpOption('h', 0, 0),
        usage(ver),
        descr(descrWidth),
        helpWidth(nextArgument),
        restArgument() {}
  Result m_fn4();
  int m_fn5();
};

class OffThreadState {
 public:
  int m_fn6();
} d;
int f, h;
long PRMJ_Now();
static void RunFile(C) {
  long a = PRMJ_Now();
  printf(double(a) / 0);
}

static void Process(int, int) { RunFile(0); }

bool Now(int *, unsigned, A *) {
  F b;
  double c = PRMJ_Now();
  b.m_fn2().m_fn1(c);
}

int InitWatchdog();
G e{Now};
static int Shell() {
  I g;
  if (g.m_fn3()) Process(0, 0);
  if (f) Process(0, 0);
}

main() {
  J i(0);
  switch (i.m_fn4())
  case 0:
  return 0;
  if (i.m_fn5()) return 0;
  if (h) return 0;
  if (d.m_fn6()) return 0;
  if (InitWatchdog()) return 0;
  Shell();
}