Re: -Wuninitialized false positives and threading knobs

2021-11-02 Thread Richard Biener via Gcc
On Mon, Nov 1, 2021 at 4:18 PM Jeff Law via Gcc wrote: > > > > On 10/31/2021 6:12 AM, Aldy Hernandez wrote: > > After Jeff's explanation of the symbiosis between jump threading and > > the uninit pass, I'm beginning to see that (almost) every > > Wuninitialized warning is cause for reflection. It

Re: -Wuninitialized false positives and threading knobs

2021-11-01 Thread Jeff Law via Gcc
On 10/31/2021 6:12 AM, Aldy Hernandez wrote: After Jeff's explanation of the symbiosis between jump threading and the uninit pass, I'm beginning to see that (almost) every Wuninitialized warning is cause for reflection. It usually hides a missing jump thread. I investigated one such false po

-Wuninitialized false positives and threading knobs

2021-10-31 Thread Aldy Hernandez via Gcc
After Jeff's explanation of the symbiosis between jump threading and the uninit pass, I'm beginning to see that (almost) every Wuninitialized warning is cause for reflection. It usually hides a missing jump thread. I investigated one such false positive (uninit-pred-7_a.c) and indeed, there's a m