https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119547
--- Comment #12 from Robin Dapp <rdapp at gcc dot gnu.org> --- > I recompile the opencv application with current gcc(commit b6aafe9a5b), and > it still reproduce this bug. Do you have apply the patch of step 3 which > enable vector implement of cvt_64f function? Yes, I followed your instructions step by step. There are vector instructions but I'm not seeing a similar pattern to the one you were showing. Which exact function (mangled) do I need to look at? You should be seeing an internal compiler error when building from trunk though (see above). Did you configure with --disable-checking? And which other configure flags did you use for GCC? If I cannot get it to work, would you mind putting a breakpoint at the beginning of the miscompiled function and get the invocation parameters for a failing test? That way we can just extract the function into a run test and use the parametes.
