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From: "acoplan at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/96044] GCC hangs in tight loop resolving
 __builtin_jn using MPFR
Date: Fri, 03 Jul 2020 10:10:51 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96044

--- Comment #3 from Alex Coplan <acoplan at gcc dot gnu.org> ---
Ah, it appears I just wasn't being patient enough. It seems you can make the
constant folding take longer (arbitrarily long?) by adding another digit to=
 the
arguments.

This code:

void f(void) {
  __builtin_jn(733333,733333);
}

has been compiling for >=3D 1 minute for me.=