[Bug tree-optimization/71261] [7 Regression] Trunk GCC hangs on knl and broadwell targets

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71261

--- Comment #18 from Richard Biener <rguenth at gcc dot gnu.org> ---
With the posted patch compile-time is down to <1s for the "at least 15 min"
testcase (the patch forcing bool patterns to be enabled).

Waiting for feedback for some time and then will commit.