https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79179
Bug ID: 79179
Summary: PowerPC64: -mcpu=power9 creates stxsd with bad offset
Product: gcc
Version: 7.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: anton at samba dot org
CC: meissner at gcc dot gnu.org, segher at gcc dot gnu.org,
wschmidt at gcc dot gnu.org
Target Milestone: ---
The following test case:
#pragma pack(1)
struct {
signed : 1;
unsigned long a;
} b;
void c(void)
{
b.a = 0;
for (; b.a <= 45; b.a = (long)b.a + 1)
;
}
built with:
# gcc -O3 -mcpu=power9 crash1.i
Creates an stxsd instruction with a bad offset:
/tmp/cckULtLs.s: Assembler messages:
/tmp/cckULtLs.s:32: Error: operand out of domain (1 is not a multiple of 4)
which is:
stxsd 12,1(9)
