http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55277
Bug #: 55277
Summary: [4.6/4.7/4.8 regression] ICE in assign_by_spills, at
lra-assigns.c:1217
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Keywords: ra
Severity: normal
Priority: P3
Component: target
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: ste...@gcc.gnu.org
CC: debian-...@lists.debian.org, gcc-bugs@gcc.gnu.org,
ja...@gcc.gnu.org, l...@gcc.gnu.org, l...@redhat.com,
vmaka...@gcc.gnu.org, vmaka...@redhat.com
Depends on: 42536
Target: i486-linux-gnu
+++ This bug was initially created as a clone of Bug #42536 +++
Cloned for LRA.
/* { dg-do compile { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */
/* { dg-options "-O2 -fno-gcse -fno-omit-frame-pointer -m32" } */
struct C;
struct B { struct C *b; };
struct C { void (*baz) (struct B *, void *, int); };
typedef union { int f; void *e; } D;
struct E { struct B *e; };
struct A { struct E *a1; D *a2; D *a3; };
void
foo (long *x, long y)
{
*(long long *) x = y;
}
extern long fn1 (D);
extern void fn2 (void);
void
_bar (struct A *x)
{
register int a asm ("esi");
register D *volatile b asm ("edi");
register int c asm ("ebx");
void *d;
asm volatile ("" : "=r" (a), "=r" (b), "=r" (c) : : "memory");
if ((d = b[-2].e) != 0 && b [-2].e < d)
{
foo (&(((long *) d) + 1) [b[0].f], fn1 (b[-1]));
x->a2 = (D *) c;
x->a3 = b;
fn2 ();
}
x->a1->e->b->baz (x->a1->e, (void *) (long) a, 1);
}
At trunk r193411:
t.c: In function '_bar':
t.c:36:1: internal compiler error: in assign_by_spills, at lra-assigns.c:1217
}
^
0x8d6d6f assign_by_spills
../../trunk/gcc/lra-assigns.c:1217
0x8d7ab5 lra_assign()
../../trunk/gcc/lra-assigns.c:1369
0x8d2942 lra(_IO_FILE*)
../../trunk/gcc/lra.c:2303
0x882ea0 do_reload
../../trunk/gcc/ira.c:4624
0x883089 rest_of_handle_reload
../../trunk/gcc/ira.c:4737
Please submit a full bug report,
with preprocessed source if appropriate.
