I get the following ICE with current gcc 4.3. This goes back until at
least 4.3 20070303. 4.1 works. I cannot test 4.2.
[EMAIL PROTECTED]:~$ /usr/lib/gcc-snapshot/bin/gcc -c -O2 mpfr-mul.c
mpfr-mul.c: In function 'mpfr_mul':
mpfr-mul.c:19: error: unrecognizable insn:
(insn:TI 69 102 68 3 (parallel [
(set (reg:DI 136 f8)
(asm_operands:DI ("xma.hu %0 = %2, %3, f0
xma.l %1 = %2, %3, f0") ("=&f") 0 [
(reg:DI 137 f9)
(reg:DI 134 f6 [orig:345 D.1826 ] [345])
]
[
(asm_input:DI ("f") ("") 0)
(asm_input:DI ("f") ("") 0)
] ("mpfr-mul.c") 16))
(set (reg/v:DI 135 f7 [orig:340 t3 ] [340])
(asm_operands:DI ("xma.hu %0 = %2, %3, f0
xma.l %1 = %2, %3, f0") ("=f") 1 [
(reg:DI 137 f9)
(reg:DI 134 f6 [orig:345 D.1826 ] [345])
]
[
(asm_input:DI ("f") ("") 0)
(asm_input:DI ("f") ("") 0)
] ("mpfr-mul.c") 16))
]) -1 (nil)
(nil))
mpfr-mul.c:19: internal compiler error: in get_attr_first_insn, at
config/ia64/itanium2.md:1839
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
For Debian GNU/Linux specific bug reporting instructions,
see <URL:file:///usr/share/doc/gcc-4.1/README.Bugs>.
[EMAIL PROTECTED]:~$ /usr/lib/gcc-snapshot/bin/gcc -c -O mpfr-mul.c
[EMAIL PROTECTED]:~$ gcc-4.1 -c -O2 mpfr-mul.c
[EMAIL PROTECTED]:~$
Testcase:
typedef struct
{
unsigned long int *_mpfr_d;
}
__mpfr_struct;
typedef const __mpfr_struct *mpfr_srcptr;
mpfr_mul (mpfr_srcptr b, mpfr_srcptr c)
{
unsigned long int *tmp;
unsigned long int t1, t2, t3;
unsigned long int __x;
__x = tmp[1] + t1;
tmp[1] = __x;
__asm__ ("xma.hu %0 = %2, %3, f0\n\txma.l %1 = %2, %3, f0": "=&f" (t1), "=f"
(t2):"f" (((b)->_mpfr_d)[0]),
"f" (((c)->_mpfr_d)[1]));
__asm__ ("xma.hu %0 = %2, %3, f0\n\txma.l %1 = %2, %3, f0": "=&f" (tmp[3]),
"=f" (t3):"f" (((b)->_mpfr_d)[1]),
"f" (((c)->_mpfr_d)[1]));
tmp[3] += t1;
}
--
Summary: [4.3 Regression] ICE in get_attr_first_insn, at
config/ia64/itanium2.md:1839 at -O2
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: tbm at cyrius dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31684
