[Bug tree-optimization/116166] risc-v (last) insn-emit-nn.c build takes hours

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116166

--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
So with --param logical-op-non-short-circuit=1 (and my patch) the
insn-emit-96.cc testcase as attached compiles in 100s and

 dominator optimization             :   5.62 (  6%)   0.05 (  1%)   5.56 (  5%)
 3015k (  0%)
 backwards jump threading           :  27.60 ( 27%)   0.02 (  0%)  27.63 ( 26%)
 6783k (  1%)

The reproducing run with unpatched tree still runs since 27 minutes,
the patched tree still runs since 12 minutes.