[Bug tree-optimization/97081] New: wrong code for rotate vectorization (x86 target)

2020-09-16 Thread igor at tachyum dot com
: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: igor at tachyum dot com Target Milestone: --- Created attachment 49231 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49231&action=edit testcase incorrectly calculates left shift amount when b

[Bug tree-optimization/97081] wrong code for rotate vectorization (x86 target)

2020-09-16 Thread igor at tachyum dot com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97081 --- Comment #1 from Igor Shevlyakov --- vect_recog_rotate_pattern() seems to be the culprit