[Bug tree-optimization/44687] [4.6 Regression] ICE: in tree_nrv, at tree-nrv.c:155 with -fprofile-generate

[regehr at cs dot utah dot edu]

------- Comment #4 from regehr at cs dot utah dot edu  2010-06-28 05:55 -------
This same ICE also happens w/o -fprofile-generate:

regehr@john-home:~/volatile/bugs/tmp318$ current-gcc -v
Using built-in specs.
COLLECT_GCC=current-gcc
COLLECT_LTO_WRAPPER=/home/regehr/z/compiler-install/gcc-r161425-install/libexec/gcc/i686-pc-linux-gnu/4.6.0/lto-wrapper
Target: i686-pc-linux-gnu
Configured with: ../configure --with-libelf=/usr/local --enable-lto
--prefix=/home/regehr/z/compiler-install/gcc-r161425-install
--program-prefix=r161425- --enable-languages=c,c++
Thread model: posix
gcc version 4.6.0 20100626 (experimental) (GCC) 
regehr@john-home:~/volatile/bugs/tmp318$ current-gcc -O2 small.c
small.c: In function ‘func_72’:
small.c:24:1: internal compiler error: in tree_nrv, at tree-nrv.c:155
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
regehr@john-home:~/volatile/bugs/tmp318$ cat small.c
typedef int int32_t;
typedef unsigned char uint8_t;
struct S0
{
  uint8_t f0;
};
struct S0 *g_18[7][5][1][1] = {
};

struct S0 **g_17 = &g_18[0][3][0][0];
int32_t g_86;
struct S0 func_72 (uint8_t p_73, struct S0 p_74);

void int326 (struct S0 **p_67, int32_t p_68, int32_t * *const p_69,
        struct S0 *p_70)
{
  struct S0 l_95 = {
    -1L
  };
  func_72 (1L, func_72 (0, l_95));
}

struct S0
func_72 (uint8_t p_73, struct S0 p_74)
{
  int32_t *l_85 = &g_86;
  if (*l_85)
  lbl_94:*l_85 ^= 0;
  if (g_86)
    goto lbl_94;
  return **g_17;
}


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44687