Revert r316193.

This patch breaks users using -fno-canonical-prefixes, for whom resolving
symlinks is not acceptable.

llvm-svn: 316195

1 files changed, 0 insertions, 11 deletions

diff --git a/clang/lib/Frontend/DependencyFile.cpp b/clang/lib/Frontend/DependencyFile.cpp
index b6e4cfa3385..561eb9c4a31 100644
--- a/clang/lib/Frontend/DependencyFile.cpp
+++ b/clang/lib/Frontend/DependencyFile.cpp
@@ -161,7 +161,6 @@ class DFGImpl : public PPCallbacks {
   bool AddMissingHeaderDeps;
   bool SeenMissingHeader;
   bool IncludeModuleFiles;
-  bool CanonicalSystemHeaders;
   DependencyOutputFormat OutputFormat;
 
 private:
@@ -177,7 +176,6 @@ public:
       AddMissingHeaderDeps(Opts.AddMissingHeaderDeps),
       SeenMissingHeader(false),
       IncludeModuleFiles(Opts.IncludeModuleFiles),
-      CanonicalSystemHeaders(Opts.CanonicalSystemHeaders),
       OutputFormat(Opts.OutputFormat) {
     for (const auto &ExtraDep : Opts.ExtraDeps) {
       AddFilename(ExtraDep);
@@ -290,15 +288,6 @@ void DFGImpl::FileChanged(SourceLocation Loc,
   if (!FileMatchesDepCriteria(Filename.data(), FileType))
     return;
 
-  // Try to shorten system header paths like GCC does (unless
-  // -fno-canonical-system-headers is given).
-  if (CanonicalSystemHeaders && isSystem(FileType)) {
-    StringRef RealPath = FE->tryGetRealPathName();
-    if (!RealPath.empty() && RealPath.size() < Filename.size()) {
-      Filename = RealPath;
-    }
-  }
-
   AddFilename(llvm::sys::path::remove_leading_dotslash(Filename));
 }