https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117207
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |linkw at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, what about just adding -fno-tree-vectorize to dg-options of the tests?
Here is what I've tried (r12-5394 is the last ppc64le build I have around
before the r12-5920 fix, r12-6021 first ppc64le build after that fix and
r15-7688 latest trunk build I have around):
for i in ./cc1.r12-5394 ./cc1.r12-6021 ../../objp5/gcc/cc1.r15-7688; do for j
in "" "-fno-tree-vectorize"; do rm -f pr103515.c.*; $i -quiet -nostdinc -O2 $j
-fdump-rtl-loop2_unroll-optimized pr103515.c ; echo $i $j; grep 'optimized:
loop unrolled' pr103515.c.*; done; done
./cc1.r12-5394
pr103515.c:16:17: optimized: loop unrolled 3 times
pr103515.c:26:11: optimized: loop unrolled 7 times
./cc1.r12-5394 -fno-tree-vectorize
pr103515.c:16:17: optimized: loop unrolled 3 times
pr103515.c:25:17: optimized: loop unrolled 3 times
./cc1.r12-6021
pr103515.c:26:11: optimized: loop unrolled 7 times
./cc1.r12-6021 -fno-tree-vectorize
pr103515.c:25:17: optimized: loop unrolled 3 times
../../objp5/gcc/cc1.r15-7688
pr103515.c:17:11: optimized: loop unrolled 1 times
pr103515.c:26:11: optimized: loop unrolled 7 times
../../objp5/gcc/cc1.r15-7688 -fno-tree-vectorize
pr103515.c:25:17: optimized: loop unrolled 3 times
So, IMHO the test still checks what it is supposed to test even with
-fno-tree-vectorize, it would have FAILed before r12-6021 even with
-fno-tree-vectorize, it doesn't FAIL after that and doesn't still FAIL on the
trunk that way (unlike the case without -fno-tree-vectorize).
