[Bug tree-optimization/87046] Incorrect vectorization of fma with -O3
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87046 Richard Biener changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |DUPLICATE --- Comment #4 from Richard Biener --- Dup. *** This bug has been marked as a duplicate of bug 85597 ***
[Bug tree-optimization/87046] Incorrect vectorization of fma with -O3
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87046 --- Comment #3 from Martin Liška --- Fixed in r259840.
[Bug tree-optimization/87046] Incorrect vectorization of fma with -O3
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87046 Richard Biener changed: What|Removed |Added Keywords||needs-bisection CC||marxin at gcc dot gnu.org, ||rguenth at gcc dot gnu.org --- Comment #2 from Richard Biener --- Martin, can you bisect what fixed this?
[Bug tree-optimization/87046] Incorrect vectorization of fma with -O3
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87046 Alexander Monakov changed: What|Removed |Added CC||amonakov at gcc dot gnu.org Component|target |tree-optimization --- Comment #1 from Alexander Monakov --- This appears recently fixed, gcc-8.1 still got this wrong but gcc-8.2 is ok. Possibly went away with PR 85597 fix, but not sure about that. On gcc-8.1 SLP incorrectly produced vectp.1_29 = u_4(D); vect__26.2_27 = MEM[(const double *)vectp.1_29]; _65 = MEM[(const double *)u_4(D) + 24B]; vectp.4_22 = v_7(D); vect__28.5_17 = MEM[(const double *)vectp.4_22]; _67 = MEM[(const double *)v_7(D) + 24B]; vectp.7_64 = w_10(D); vect__30.8_66 = MEM[(const double *)vectp.7_64]; _69 = MEM[(const double *)w_10(D) + 24B]; _68 = {_26, _39, _52, _65}; vect_cst__15 = _68; vect__31.9_25 = vect__26.2_27 * vect__28.5_17 + vect_cst__15;