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From: "admin@tho-otto.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug modula2/110126] New: Variables are reported as unused when only referenced by ASM statements
Date: Mon, 05 Jun 2023 12:45:23 +0000	[thread overview]
Message-ID: <bug-110126-4@http.gcc.gnu.org/bugzilla/> (raw)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110126

            Bug ID: 110126
           Summary: Variables are reported as unused when only referenced
                    by ASM statements
           Product: gcc
           Version: 13.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: modula2
          Assignee: gaius at gcc dot gnu.org
          Reporter: admin@tho-otto.de
  Target Milestone: ---

In the following fragment:

MODULE foo;

VAR x: INTEGER;

PROCEDURE test;
BEGIN
  ASM("" : : "m"(x));
END test;

END foo.

x is reported as unused (same happens when specifying it as output parameter)

Even worse, when used as input operand only, the whole asm statement seems to
be optimized away.

             reply	other threads:[~2023-06-05 12:45 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-05 12:45 admin@tho-otto.de [this message]
2023-06-06 14:26 ` [Bug modula2/110126] " gaius at gcc dot gnu.org
2023-06-07  5:06 ` admin@tho-otto.de
2023-06-07 12:50 ` gaius at gcc dot gnu.org
2023-06-08 20:33 ` gaius at gcc dot gnu.org
2023-06-08 23:56 ` cvs-commit at gcc dot gnu.org
2023-06-08 23:56 ` gaius at gcc dot gnu.org
2023-06-09  6:21 ` admin@tho-otto.de
2023-06-09  7:19 ` admin@tho-otto.de
2023-06-12 12:26 ` gaius at gcc dot gnu.org
2023-06-12 13:35 ` admin@tho-otto.de
2023-06-12 14:26 ` cvs-commit at gcc dot gnu.org
2023-06-12 14:28 ` gaius at gcc dot gnu.org
2023-06-13 11:36 ` admin@tho-otto.de
2023-07-11 18:13 ` admin@tho-otto.de
2023-07-29 16:25 ` cvs-commit at gcc dot gnu.org
2023-07-29 20:04 ` cvs-commit at gcc dot gnu.org
2023-07-29 20:13 ` gaius at gcc dot gnu.org

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