[Bug tree-optimization/36561] New: store using long array index not hoisted out of loop
hutchinsonandy at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Wed Jun 18 00:37:00 GMT 2008
Testsuite test gcc.dg/tree-ssa/loop35.c fails for avr target for test3().
This test uses long array index. Tests with int or char index get hoisted as
expected.
void test3(unsigned long b)
{
unsigned i;
/* And here. */
for (i = 0; i < 100; i++)
{
arr[b+8].X += i;
arr[b+9].X += i;
}
}
Richard Guenther indicates:
> This is because the alias-oracle for store-motion doesn't handle conversions
> to sizetype well in the offset disambiguation.
--
Summary: store using long array index not hoisted out of loop
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: hutchinsonandy at gcc dot gnu dot org
GCC target triplet: avr-unkown-none
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36561
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