[all-commits] [llvm/llvm-project] cb22d7: [clang] Fix DIFile directory root on Windows

[Keith Smiley via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cb22d71806b784a9105803f38b2740ca6888392a
      https://github.com/llvm/llvm-project/commit/cb22d71806b784a9105803f38b2740ca6888392a
  Author: Keith Smiley <keithbsmiley at gmail.com>
  Date:   2022-03-14 (Mon, 14 Mar 2022)

  Changed paths:
    M clang/lib/CodeGen/CGDebugInfo.cpp
    M clang/test/CodeGen/debug-prefix-map.c

  Log Message:
  -----------
  [clang] Fix DIFile directory root on Windows

On unix systems this logic would not separate the file and directory of
the DIFile unless they shared more components at the start than just the
root path character. The logic to do this was unix specific so it didn't
work on Windows. Now we check if the entire root_path is the same as
what you were going to set as the Dir and use the full filepath in that
case.

Differential Revision: https://reviews.llvm.org/D111579