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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/108129] New: nop_atomic_bit_test_and_p is too
 bloated
Date: Thu, 15 Dec 2022 15:06:57 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 13.0
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X-Bugzilla-Who: amonakov at gcc dot gnu.org
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108129

            Bug ID: 108129
           Summary: nop_atomic_bit_test_and_p is too bloated
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: amonakov at gcc dot gnu.org
  Target Milestone: ---

match.pd has multi-pattern matcher 'nop_atomic_bit_test_and_p'.

It expands to ~38 KLOC in gimple-match.cc and ~350 KB in the compiled binar=
y.

There has to be a better way than repeatedly emitting the match pattern for
each member of {ATOMIC,SYNC}_FETCH_{AND,OR_XOR}_N :)=