https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109572
--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:7a0cbaf7f802df209840d78740ffc749dadd1ce3 commit r14-166-g7a0cbaf7f802df209840d78740ffc749dadd1ce3 Author: Jakub Jelinek <ja...@redhat.com> Date: Sat Apr 22 20:16:08 2023 +0200 testsuite: Fix up pr109011-*.c tests for powerpc [PR109572] As reported, pr109011-{4,5}.c tests fail on powerpc. I thought they should have the same counts as the corresponding -{2,3}.c tests, the only difference is that -{2,3}.c are int while -{4,5}.c are long long. But there are 2 issues. One is that in the foo function the vectorization costs comparison triggered in, while in -{2,3}.c we use vectorization factor 4 and it was found beneficial, when using long long it was just vf 2 and the scalar cost of doing p[i] = __builtin_ctzll (q[i]) twice looked smaller than the vectorizated statements. I could disable the cost model, but instead chose to add some further arithmetics to those functions to make it beneficial even with vf 2. After that change, pr109011-4.c still failed; I was expecting 4 .CTZ calls there on power9, 3 vectorized and one in scalar code, but for some reason the scalar one didn't trigger. As I really want to count just the vectorized calls, I've added the vect prefix on the variables to ensure I'm only counting vectorized calls and decreased the 4 counts to 3. 2023-04-22 Jakub Jelinek <ja...@redhat.com> PR testsuite/109572 * gcc.dg/vect/pr109011-1.c: In scan-tree-dump-times regexps match also vect prefix to make sure we only count vectorized calls. * gcc.dg/vect/pr109011-2.c: Likewise. On powerpc* expect just count 3 rather than 4. * gcc.dg/vect/pr109011-3.c: In scan-tree-dump-times regexps match also vect prefix to make sure we only count vectorized calls. * gcc.dg/vect/pr109011-4.c: Likewise. On powerpc* expect just count 3 rather than 4. (foo): Add 2 further arithmetic ops to the loop to make it appear worthwhile for vectorization heuristics on powerpc. * gcc.dg/vect/pr109011-5.c: In scan-tree-dump-times regexps match also vect prefix to make sure we only count vectorized calls. (foo): Add 2 further arithmetic ops to the loop to make it appear worthwhile for vectorization heuristics on powerpc.
