-------------------------------------------------

Feature:
  OpenMP support in CLANG:

Sub-Feature: 
  Support for option -fopenmp

Files Changed/Added:
  * include/clang/Driver/Options.td (C)
  * include/clang/Basic/LangOptions.def (C)
  * lib/Driver/Tools.cpp (C)
  * lib/Frontend/CompilerInvocation.cpp (C)

Test Cases Changed/Added:
  * test/Driver/clang_fopenmp_opt.c (A)
-------------------------------------------------


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166868 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Basic/LangOptions.def

@@ -167,6 +167,8 @@ LANGOPT(ApplePragmaPack, 1, 0, "Apple gcc-compatible #pragma pack handling")
 BENIGN_LANGOPT(EmitMicrosoftInlineAsm , 1, 0, 
                "Enable emission of MS-style inline assembly.")
 
+LANGOPT(OpenMP, 1, 0, "Enables OpenMP support.")
+
 BENIGN_LANGOPT(RetainCommentsFromSystemHeaders, 1, 0, "retain documentation comments from system headers in the AST")
 
 #undef LANGOPT

include/clang/Driver/Options.td

@@ -594,7 +594,7 @@ def fno_objc_nonfragile_abi : Flag<["-"], "fno-objc-nonfragile-abi">, Group<f_Gr
 def fobjc_sender_dependent_dispatch : Flag<["-"], "fobjc-sender-dependent-dispatch">, Group<f_Group>;
 def fobjc : Flag<["-"], "fobjc">, Group<f_Group>;
 def fomit_frame_pointer : Flag<["-"], "fomit-frame-pointer">, Group<f_Group>;
-def fopenmp : Flag<["-"], "fopenmp">, Group<f_Group>;
+def fopenmp : Flag<["-"], "fopenmp">, Group<f_Group>, Flags<[CC1Option]>;
 def fno_optimize_sibling_calls : Flag<["-"], "fno-optimize-sibling-calls">, Group<f_Group>;
 def foptimize_sibling_calls : Flag<["-"], "foptimize-sibling-calls">, Group<f_Group>;
 def force__cpusubtype__ALL : Flag<["-"], "force_cpusubtype_ALL">;

lib/Driver/Tools.cpp

@@ -2412,6 +2412,8 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
 
   Args.AddLastArg(CmdArgs, options::OPT_pthread);
 
+ Args.AddLastArg(CmdArgs, options::OPT_fopenmp);
+
   // -stack-protector=0 is default.
   unsigned StackProtectorLevel = 0;
   if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,

lib/Frontend/CompilerInvocation.cpp

@@ -870,6 +870,8 @@ static void LangOptsToArgs(const LangOptions &Opts, ToArgsList &Res) {
     Res.push_back("-fapple-pragma-pack");
   if (!Opts.CurrentModule.empty())
     Res.push_back("-fmodule-name=" + Opts.CurrentModule);
+  if (Opts.OpenMP)
+    Res.push_back("-fopenmp");
 }
 
 static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
@@ -2143,6 +2145,7 @@ static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
   Opts.ThreadSanitizer = Args.hasArg(OPT_fthread_sanitizer);
   Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
   Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
+  Opts.OpenMP = Args.hasArg(OPT_fopenmp);
 
   // Record whether the __DEPRECATED define was requested.
   Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,

test/Driver/clang_fopenmp_opt.c

@@ -0,0 +1,2 @@
+// RUN: %clang -### -S -o %t %s              2>&1 | not grep -w -- -fopenmp
+// RUN: %clang -### -S -o %t %s -fopenmp     2>&1 | grep -w -- -fopenmp