[Driver][OpenMP] Add logic for offloading-specific argument translation.

Summary:
This patch includes support for argument translation that is specific of a given offloading kind. Additionally, it implements the translation for OpenMP device kinds in the gcc tool chain.

With this patch, it is possible to compile a functional OpenMP application with offloading capabilities with no separate compilation.

Reviewers: echristo, tra, jlebar, rsmith, ABataev, hfinkel

Subscribers: whchung, mehdi_amini, cfe-commits, Hahnfeld, andreybokhanko, arpith-jacob, carlo.bertolli, caomhin

Differential Revision: https://reviews.llvm.org/D21848

llvm-svn: 285320

1 files changed, 5 insertions, 4 deletions

diff --git a/clang/lib/Driver/Compilation.cpp b/clang/lib/Driver/Compilation.cpp
index 6bbaae6..5c13e59 100644
--- a/clang/lib/Driver/Compilation.cpp
+++ b/clang/lib/Driver/Compilation.cpp
@@ -50,14 +50,15 @@ Compilation::~Compilation() {
   }
 }
 
-const DerivedArgList &Compilation::getArgsForToolChain(const ToolChain *TC,
-                                                       StringRef BoundArch) {
+const DerivedArgList &
+Compilation::getArgsForToolChain(const ToolChain *TC, StringRef BoundArch,
+                                 Action::OffloadKind DeviceOffloadKind) {
   if (!TC)
     TC = &DefaultToolChain;
 
-  DerivedArgList *&Entry = TCArgs[std::make_pair(TC, BoundArch)];
+  DerivedArgList *&Entry = TCArgs[{TC, BoundArch, DeviceOffloadKind}];
   if (!Entry) {
-    Entry = TC->TranslateArgs(*TranslatedArgs, BoundArch);
+    Entry = TC->TranslateArgs(*TranslatedArgs, BoundArch, DeviceOffloadKind);
     if (!Entry)
       Entry = TranslatedArgs;
   }