https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61572
Bug ID: 61572
Summary: [4.10 Regression] ICE: in assign_by_spills, at
lra-assigns.c:1335
Product: gcc
Version: 4.10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: trippels at gcc dot gnu.org
Happens while building the Linux kernel:
markus@x4 linux-3.15 % cat test.i
struct autofs_sb_info
{
int exp_timeout;
};
void *f;
int g;
int fn1 (struct autofs_sb_info *p1)
{
int a, b;
a = (
{
register __typeof__(0) c asm("rdx");
b = c;
int d;
__typeof__(0) e;
e = p1->exp_timeout / 1000;
switch (0)
default:
asm("" : "=a"(d) : "0"(e), ""(0));
d;
});
if (a)
return 1;
if (b)
p1->exp_timeout = 0;
return 0;
}
int fn2 ()
{
struct autofs_sb_info *h = f;
switch (g)
{
case 0 ?:
0 : return fn1 (h);
default:
return 0;
}
}
markus@x4 linux-3.15 % gcc -c -O2 root.i
fs/autofs4/root.c: In function ‘autofs4_root_ioctl_unlocked.isra.14’:
fs/autofs4/root.c:874:1: internal compiler error: in assign_by_spills, at
lra-assigns.c:1335
}
^
0x8aa979 assign_by_spills
../../gcc/gcc/lra-assigns.c:1335
0x8ab2f3 lra_assign()
../../gcc/gcc/lra-assigns.c:1500
0x8a707b lra(_IO_FILE*)
../../gcc/gcc/lra.c:2230
0x8670c6 do_reload
../../gcc/gcc/ira.c:5325
0x8670c6 execute
../../gcc/gcc/ira.c:5486
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
