r265766 - [modules] Add a comment to explain why -E leaves some #includes in the preprocessed output.

[Richard Smith via cfe-commits]

Author: rsmith
Date: Thu Apr  7 20:23:59 2016
New Revision: 265766

URL: http://llvm.org/viewvc/llvm-project?rev=265766&view=rev
Log:
[modules] Add a comment to explain why -E leaves some #includes in the preprocessed output.

Modified:
    cfe/trunk/lib/Frontend/PrintPreprocessedOutput.cpp
    cfe/trunk/test/Modules/preprocess.cpp

Modified: cfe/trunk/lib/Frontend/PrintPreprocessedOutput.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/PrintPreprocessedOutput.cpp?rev=265766&r1=265765&r2=265766&view=diff
==============================================================================
--- cfe/trunk/lib/Frontend/PrintPreprocessedOutput.cpp (original)
+++ cfe/trunk/lib/Frontend/PrintPreprocessedOutput.cpp Thu Apr  7 20:23:59 2016
@@ -336,7 +336,9 @@ void PrintPPOutputPPCallbacks::Inclusion
       OS << "#include "
          << (IsAngled ? '<' : '"')
          << FileName
-         << (IsAngled ? '>' : '"');
+         << (IsAngled ? '>' : '"')
+         << " /* clang -E: implicit import for module "
+         << Imported->getFullModuleName() << " */";
     }
     // Since we want a newline after the @import, but not a #<line>, start a new
     // line immediately.

Modified: cfe/trunk/test/Modules/preprocess.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Modules/preprocess.cpp?rev=265766&r1=265765&r2=265766&view=diff
==============================================================================
--- cfe/trunk/test/Modules/preprocess.cpp (original)
+++ cfe/trunk/test/Modules/preprocess.cpp Thu Apr  7 20:23:59 2016
@@ -1,6 +1,6 @@
 // RUN: rm -rf %t
 // RUN: %clang_cc1 -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -I %S/Inputs -x c++ -E %s | \
-// RUN:   FileCheck -strict-whitespace %s --check-prefix=CHECK --check-prefix=CXX
+// RUN:   FileCheck -strict-whitespace %s --check-prefix=CHECK --check-prefix=CXX --check-prefix=CXX-DASHE
 // RUN: %clang_cc1 -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -I %S/Inputs -x objective-c -E %s | \
 // RUN:   FileCheck -strict-whitespace %s --check-prefix=CHECK --check-prefix=OBJC
 // RUN: %clang_cc1 -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -I %S/Inputs -x c++ -E -frewrite-includes %s | \
@@ -14,7 +14,9 @@ foo bar baz
 // The weird {{ }} here is to prevent the -frewrite-includes test from matching its own CHECK lines.
 
 // CXX: #include{{ }}"dummy.h"
+// CXX-DASHE-SAME: /* clang -E: implicit import for module dummy */
 // CXX: #include{{ }}"dummy.h"
+// CXX-DASHE-SAME: /* clang -E: implicit import for module dummy */
 // CXX: foo bar baz
 
 // OBJC: @import{{ }}dummy; /* clang