https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82002
--- Comment #2 from Daniel Santos <daniel.santos at pobox dot com> ---
Another problem when we throw in an ms to sysv call:
$ cat /home/daniel/proj/sys/gcc/git/gcc/testsuite/gcc.target/i386/pr82002-2a.c
/* { dg-do compile { target lp64 } } */
/* { dg-options "-Ofast -mstackrealign -mabi=ms" } */
void __attribute__((sysv_abi)) a (char *);
void
b ()
{
char c[10000000000];
c[1099511627776] = 'b';
a (c);
a (c);
}
spawn
/home/daniel/proj/sys/gcc/builds/pr82002-minimal-x86_64-pc-linux-gnu/gcc/xgcc
-B/home/daniel/proj/sys/gcc/builds/pr82002-minimal-x86_64-pc-linux-gnu/gcc/
/home/daniel/proj/sys/gcc/git/gcc/testsuite/gcc.target/i386/pr82002-2a.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -Ofast -mstackrealign
-mabi=ms -S -o pr82002-2a.s
/home/daniel/proj/sys/gcc/git/gcc/testsuite/gcc.target/i386/pr82002-2a.c: In
function 'b':
/home/daniel/proj/sys/gcc/git/gcc/testsuite/gcc.target/i386/pr82002-2a.c:12:1:
error: unrecognizable insn:
(insn/f 36 35 37 2 (set (mem/c:V4SF (plus:DI (reg/f:DI 7 sp)
(const_int 10000000016 [0x2540be410])) [2 S16 A128])
(reg:V4SF 27 xmm6))
"/home/daniel/proj/sys/gcc/git/gcc/testsuite/gcc.target/i386/pr82002-2a.c":7 -1
(expr_list:REG_DEAD (reg:V4SF 27 xmm6)
(expr_list:REG_CFA_EXPRESSION (set (mem/c:V4SF (plus:DI (reg/f:DI 7 sp)
(const_int 10000000016 [0x2540be410])) [2 S16 A128])
(reg:V4SF 27 xmm6))
(nil))))
during RTL pass: cprop_hardreg
/home/daniel/proj/sys/gcc/git/gcc/testsuite/gcc.target/i386/pr82002-2a.c:12:1:
internal compiler error: in extract_insn, at recog.c:2306
0x5c1958 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/daniel/proj/sys/gcc/git/gcc/rtl-error.c:108
0x5c1974 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/home/daniel/proj/sys/gcc/git/gcc/rtl-error.c:116
0xba05a9 extract_insn(rtx_insn*)
/home/daniel/proj/sys/gcc/git/gcc/recog.c:2306
0xba15e8 extract_constrain_insn(rtx_insn*)
/home/daniel/proj/sys/gcc/git/gcc/recog.c:2206
0xbaaaf6 copyprop_hardreg_forward_1
/home/daniel/proj/sys/gcc/git/gcc/regcprop.c:801
0xbab8a4 execute
/home/daniel/proj/sys/gcc/git/gcc/regcprop.c:1308
I guess we don't have a 64-bit offset instruction for (v)movabs :)
