The following incorrect code compiled with -O, -O2 or -O3 generates an internal
error. Bug happens on gcc-3.2.3, gcc-3.3.3, gcc-3.4.3, gcc-4.0.0
void f(unsigned long long a)
{
__asm__ ("nop"::"ad"(a));
}
as.c: In function 'f':
as.c:4: error: unrecognizable insn:
(insn:HI 12 7 13 0 (parallel [
(asm_operands/v ("nop") ("") 0 [
(reg/v:DI 0 ax [orig:58 a ] [58])
]
[
(asm_input:DI ("ad"))
] ("as.c") 3)
(clobber (reg:QI 19 dirflag))
(clobber (reg:QI 18 fpsr))
(clobber (reg:QI 17 flags))
]) -1 (insn_list:REG_DEP_TRUE 6 (nil))
(nil))
as.c:4: internal compiler error: in reload_cse_simplify_operands, at
postreload.c:391
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
--
Summary: internal error on invalid asm statement (3.2, 3.3, 3.4,
4.0)
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: mikulas at artax dot karlin dot mff dot cuni dot cz
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21299
