Prepare LLVM to fix PR14625, exposing a hook in MCContext to manage the

compilation directory.

This defaults to the current working directory, just as it always has,
but now an assembler can choose to override it with a custom directory.
I've taught llvm-mc about this option and added a test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170371 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 13 insertions, 0 deletions

diff --git a/include/llvm/MC/MCContext.h b/include/llvm/MC/MCContext.h
index ce22325e85..0da75cbda4 100644
--- a/include/llvm/MC/MCContext.h
+++ b/include/llvm/MC/MCContext.h
@@ -94,6 +94,9 @@ namespace llvm {
     /// .secure_log_reset appearing between them.
     bool SecureLogUsed;
 
+    /// The compilation directory to use for DW_AT_comp_dir.
+    std::string CompilationDir;
+
     /// The dwarf file and directory tables from the dwarf .file directive.
     std::vector<MCDwarfFile *> MCDwarfFiles;
     std::vector<StringRef> MCDwarfDirs;
@@ -248,6 +251,16 @@ namespace llvm {
     /// @name Dwarf Management
     /// @{
 
+    /// \brief Get the compilation directory for DW_AT_comp_dir
+    /// This can be overridden by clients which want to control the reported
+    /// compilation directory and have it be something other than the current
+    /// working directory.
+    const std::string &getCompilationDir() const { return CompilationDir; }
+
+    /// \brief Set the compilation directory for DW_AT_comp_dir
+    /// Override the default (CWD) compilation directory.
+    void setCompilationDir(StringRef S) { CompilationDir = S.str(); }
+
     /// GetDwarfFile - creates an entry in the dwarf file and directory tables.
     unsigned GetDwarfFile(StringRef Directory, StringRef FileName,
                           unsigned FileNumber);