The following S/390 code
struct {} b;
void c() {
__asm__("la 0,%0\n"
"la 1,%1\n"
:
: "m" (b), "m" (b)
: "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8",
"r9", "r10", "r12", "r14");
}
results in
internal compiler error: Floating point exception
when building with
-fira-verbose=9 -fdump-rtl-all
gcc/ChangeLog:
2018-07-25 Ilya Leoshkevich <i...@linux.ibm.com>
PR target/86547
* lra-lives.c (remove_some_program_points_and_update_live_ranges):
Check whether lra_live_max_point is 0 before dividing.
---
gcc/lra-lives.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/gcc/lra-lives.c b/gcc/lra-lives.c
index 433c819d9e3..565c68b430a 100644
--- a/gcc/lra-lives.c
+++ b/gcc/lra-lives.c
@@ -1153,7 +1153,8 @@ remove_some_program_points_and_update_live_ranges (void)
n++;
if (lra_dump_file != NULL)
fprintf (lra_dump_file, "Compressing live ranges: from %d to %d - %d%%\n",
- lra_live_max_point, n, 100 * n / lra_live_max_point);
+ lra_live_max_point, n,
+ lra_live_max_point ? 100 * n / lra_live_max_point : 100);
if (n < lra_live_max_point)
{
lra_live_max_point = n;
--
2.18.0
