https://issues.dlang.org/show_bug.cgi?id=20131

Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bugzilla@digitalmars.com
            Summary|Bad codegen from inline     |Bad codegen from inline asm
                   |asm; possible REX prefix    |LOCK CMPXCHG; possible REX
                   |missing                     |prefix missing

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https://issues.dlang.org/show_bug.cgi?id=20131

Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |iasm

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https://issues.dlang.org/show_bug.cgi?id=20131

--- Comment #1 from Walter Bright <bugzilla@digitalmars.com> ---
Minimal test case:

  bool test() {
    asm {
        naked;
        cmpxchg [RDX], DIL;
    }
  }

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https://issues.dlang.org/show_bug.cgi?id=20131

--- Comment #2 from Walter Bright <bugzilla@digitalmars.com> ---
For the moment, until I fix it, you can use db to insert the exact bytes you need.

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https://issues.dlang.org/show_bug.cgi?id=20131

Dlang Bot <dlang-bot@dlang.rocks> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |pull

--- Comment #3 from Dlang Bot <dlang-bot@dlang.rocks> ---
@WalterBright created dlang/dmd pull request #10312 "fix Issue 20131 - Bad codegen from inline asm LOCK CMPXCHG; possible …" fixing this issue:

- fix Issue 20131 - Bad codegen from inline asm LOCK CMPXCHG; possible REX prefix missing

https://github.com/dlang/dmd/pull/10312

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https://issues.dlang.org/show_bug.cgi?id=20131

Dlang Bot <dlang-bot@dlang.rocks> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Dlang Bot <dlang-bot@dlang.rocks> ---
dlang/dmd pull request #10312 "fix Issue 20131 - Bad codegen from inline asm LOCK CMPXCHG; possible …" was merged into master:

- e26754056f0e671edbcdb80b9507780fa078907d by Walter Bright:
  fix Issue 20131 - Bad codegen from inline asm LOCK CMPXCHG; possible REX
prefix missing

https://github.com/dlang/dmd/pull/10312

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