http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57896
--- Comment #9 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Vittorio Zecca from comment #6)
> As an aside, in gcc 4.8.1 source code, before line 6995 of gcc/expr.c I put
>
> printf("\nexpr.c:6995 value->code=%d NUM_RTX_CODE=%d\n",(int)
> value->code,NUM_RTX_CODE);
> gcc_assert((int) value->code < NUM_RTX_CODE);
>
> and I get an ICE there because value->code is 34816 and NUM_RTX_CODE is 145
>
> Indeed at line 6995 ARITHMETIC_P (value) accesses rtx_class[(int)
> value->code]
> but the array rtx_class has only NUM_RTX_CODE elements.
> However, I do not know how this is relevant to this issue.
This one points to infrastructure problem.
Adding a debug patch:
--cut here--
Index: explow.c
===================================================================
--- explow.c (revision 207910)
+++ explow.c (working copy)
@@ -186,8 +186,13 @@ plus_constant (enum machine_mode mode, rtx x, HOST
}
if (c != 0)
- x = gen_rtx_PLUS (mode, x, GEN_INT (c));
+ {
+ rtx z = GEN_INT (c);
+ printf ("cccccc, %li\n", c);
+ debug_rtx (z);
+ x = gen_rtx_PLUS (mode, x, z);
+ }
if (GET_CODE (x) == SYMBOL_REF || GET_CODE (x) == LABEL_REF)
return x;
else if (all_constant)
--cut here--
~/gcc-build-48/gcc/cc1 pr57896.c
...
__get_cpuidcccccc, -4
(const_int -4 [0xfffffffffffffffc])
cccccc, -16
(const_int -16 [0xfffffffffffffff0])
cccccc, -24
(const_int -24 [0xffffffffffffffe8])
cccccc, -32
(const_int -32 [0xffffffffffffffe0])
cccccc, -40
(??? bad code 47104
)
pr57896.c: In function ‘__get_cpuid’:
pr57896.c:5:5: internal compiler error: in emit_move_insn_1, at expr.c:3437
int __get_cpuid (unsigned int __level, unsigned int *__eax, unsigned int
*__ebx, unsigned int *__ecx, unsigned int *__edx) {
^
0x62d74d emit_move_insn_1(rtx_def*, rtx_def*)
/home/uros/gcc-svn/branches/gcc-4_8-branch/gcc/expr.c:3437
0x62d7b5 emit_move_insn(rtx_def*, rtx_def*)
/home/uros/gcc-svn/branches/gcc-4_8-branch/gcc/expr.c:3535
Please note that the debug patch only encloses GEN_INT (...)
