http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50873
Bug #: 50873
Summary: The fix to PR50730 causes
gcc.c-torture/unsorted/dilayout.c to ICE
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: mgret...@sourceware.org
CC: i...@il.ibm.com
Target: arm*-*-*
The fix to PR50730 (revision 180367 -
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180367) causes the test
gcc.c-torture/unsorted/dilayout.c to ICE at -O3.
A reduced test case is:
$ cat test.c
/* arm-none-eabi-gcc -mcpu=cortex-a9 -mfpu=neon -mfloat-abi=soft -O3 test.c */
struct ii
{
int a;
int b;
};
struct foo
{
int a;
struct ii ab;
};
struct ii
foo (int *p, struct foo a)
{
p[0] = a.a;
p[1] = a.ab.a;
}
/* end of test.c. */
$ arm-none-eabi-gcc -mcpu=cortex-a9 -mfpu=neon -mfloat-abi=soft -O3 test.c
test.c: In function 'foo':
test.c:15:11: internal compiler error: in expand_insn, at optabs.c:7693
-fno-tree-vectorize causes the issue to go away.
The issue still exists in revision 180524
