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From: "dimitar at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/106562] PRU: Inefficient code for zero check of 64-bit
 (boolean) AND result
Date: Wed, 07 Jun 2023 19:02:08 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106562

--- Comment #4 from Dimitar Dimitrov <dimitar at gcc dot gnu.org> ---
The ideal PRU code sequence for the snippet would be:

char test(uint64_t a, uint64_t b)
{
        return a && b;
}
        or      r14, r14, r15
        or      r16, r16, r17
        umin    r14, r14, 1
        umin    r14, r14, r16
        ret

Thus I'm trying to implementing the following conversion in
emit_store_flag_int():

   "X !=3D 0" -> "UMIN (X, 1)=