https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65689
Bug ID: 65689
Summary: [AArch64] S constraint fails for inline asm at -O0
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: alalaw01 at gcc dot gnu.org
Starting with r221532
(https://gcc.gnu.org/ml/gcc-patches/2015-03/msg01064.html),
void
test (void)
{
__asm__ ("@ %c0" : : "S" (&test + 4));
}
fails to compile at -O0 on all aarch64 targets with:
c-output-template-3.c: In function 'test':
c-output-template-3.c:7:5: error: impossible constraint in 'asm'
__asm__ ("@ %c0" : : "S" (&test + 4));
(This is gcc.target/aarch64/c-output-template-3.c, without the -O added in
r221905, as that leads to successful compilation - however, the testcase should
compile without -O too.)
