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each line. This is particularly nice for tracking which run of a particular pass over a particular function was slow. This also required making the TimeValue string much more useful. First, there is a standard format for writing out a date and time. Let's use that rather than strings that would have to be parsed. Second, actually output the nanosecond resolution that timevalue claims to have. This is proving useful working on PR19499, so I figured it would be generally useful to commit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207385 91177308-0d34-0410-b5e6-96231b3b80d8
llvm/lib/Support/Unix README =========================== This directory provides implementations of the lib/System classes that are common to two or more variants of UNIX. For example, the directory structure underneath this directory could look like this: Unix - only code that is truly generic to all UNIX platforms Posix - code that is specific to Posix variants of UNIX SUS - code that is specific to the Single Unix Specification SysV - code that is specific to System V variants of UNIX As a rule, only those directories actually needing to be created should be created. Also, further subdirectories could be created to reflect versions of the various standards. For example, under SUS there could be v1, v2, and v3 subdirectories to reflect the three major versions of SUS.