[Driver][OpenMP] Add support to create jobs for unbundling actions.
Summary:
This patch adds the support to create jobs for the `OffloadBundlingAction` which will invoke the `clang-offload-bundler` tool to unbundle input files.
Unlike other actions, unbundling actions have multiple outputs. Therefore, this patch adds the required changes to have a variant of `Tool::ConstructJob` with multiple outputs.
The way the naming of the results is implemented is also slightly modified so that the same action can use a different offloading prefix for each use by the different offloading actions.
With this patch, it is possible to compile a functional OpenMP binary with offloading support, even with separate compilation.
Reviewers: echristo, tra, jlebar, ABataev, hfinkel
Subscribers: mkuron, whchung, mehdi_amini, cfe-commits, Hahnfeld, andreybokhanko, arpith-jacob, carlo.bertolli, caomhin
Differential Revision: https://reviews.llvm.org/D21857
llvm-svn: 285326
diff --git a/clang/lib/Driver/Action.cpp b/clang/lib/Driver/Action.cpp
index ad6fb71..4e0c224 100644
--- a/clang/lib/Driver/Action.cpp
+++ b/clang/lib/Driver/Action.cpp
@@ -115,15 +115,18 @@
return Res;
}
+/// Return a string that can be used as prefix in order to generate unique files
+/// for each offloading kind.
std::string
-Action::getOffloadingFileNamePrefix(llvm::StringRef NormalizedTriple) const {
- // A file prefix is only generated for device actions and consists of the
- // offload kind and triple.
- if (!OffloadingDeviceKind)
+Action::GetOffloadingFileNamePrefix(OffloadKind Kind,
+ llvm::StringRef NormalizedTriple,
+ bool CreatePrefixForHost) {
+ // Don't generate prefix for host actions unless required.
+ if (!CreatePrefixForHost && (Kind == OFK_None || Kind == OFK_Host))
return "";
std::string Res("-");
- Res += getOffloadingKindPrefix();
+ Res += GetOffloadKindName(Kind);
Res += "-";
Res += NormalizedTriple;
return Res;