[Bug tree-optimization/105314] ifcvt regression in noce_try_store_flag_mask

2022-04-20 Thread marxin at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105314 Martin Liška changed: What|Removed |Added Status|UNCONFIRMED |NEW Ever confirmed|0

[Bug tree-optimization/105314] ifcvt regression in noce_try_store_flag_mask

2022-04-20 Thread marxin at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105314 Martin Liška changed: What|Removed |Added CC||marxin at gcc dot gnu.org --- Comment #2

[Bug tree-optimization/105314] ifcvt regression in noce_try_store_flag_mask

2022-04-19 Thread christophm30 at gmail dot com via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105314 --- Comment #1 from Christoph Müllner --- A first analysis in noce_try_store_flag_mask() showed the following observation in case of the failing conversion into the branchless sequence: * if_info->b == const0_rtx holds * rtx_equal_p (if_info->a