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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 49012] New: [PATCH] Speed up MD5 with Microsoft Compilers
Date Sun, 28 Mar 2010 14:49:25 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=49012

           Summary: [PATCH] Speed up MD5 with Microsoft Compilers
           Product: APR
           Version: 1.3.9
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: normal
          Priority: P2
         Component: APR-util
        AssignedTo: bugs@apr.apache.org
        ReportedBy: stefanfuhrmann@alice-dsl.de


Current Visual Studio compilers fail to replace the
ROTATE_LEFT macro with a rotl machine instruction.
The attached patch tells VS what to do.

[[[
Save a couple of cycles on MD5 compiled with newer
Microsoft compilers (VS2003 ff.).

* crypt/apr_md5.c
  (ROTATE_LEFT): tell newer Microsoft compilers to 
  replace this macro with a single machine instuction.

patch by stefanfuhrmann < at > alice-dsl.de
]]]

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