[clang][ifs] Clang Interface Stubs ToolChain plumbing.
Second Landing Attempt:
This patch enables end to end support for generating ELF interface stubs
directly from clang. Now the following:
clang -emit-interface-stubs -o libfoo.so a.cpp b.cpp c.cpp
will product an ELF binary with visible symbols populated. Visibility attributes
and -fvisibility can be used to control what gets populated.
* Adding ToolChain support for clang Driver IFS Merge Phase
* Implementing a default InterfaceStubs Merge clang Tool, used by ToolChain
* Adds support for the clang Driver to involve llvm-ifs on ifs files.
* Adds -emit-merged-ifs flag, to tell llvm-ifs to emit a merged ifs text file
instead of the final object format (normally ELF)
Differential Revision: https://reviews.llvm.org/D63978
llvm-svn: 374061
diff --git a/clang/lib/Driver/Action.cpp b/clang/lib/Driver/Action.cpp
index 47b03f6..0187cf9 100644
--- a/clang/lib/Driver/Action.cpp
+++ b/clang/lib/Driver/Action.cpp
@@ -31,6 +31,7 @@
case CompileJobClass: return "compiler";
case BackendJobClass: return "backend";
case AssembleJobClass: return "assembler";
+ case IfsMergeJobClass: return "interface-stub-merger";
case LinkJobClass: return "linker";
case LipoJobClass: return "lipo";
case DsymutilJobClass: return "dsymutil";
@@ -357,6 +358,11 @@
AssembleJobAction::AssembleJobAction(Action *Input, types::ID OutputType)
: JobAction(AssembleJobClass, Input, OutputType) {}
+void IfsMergeJobAction::anchor() {}
+
+IfsMergeJobAction::IfsMergeJobAction(ActionList &Inputs, types::ID Type)
+ : JobAction(IfsMergeJobClass, Inputs, Type) {}
+
void LinkJobAction::anchor() {}
LinkJobAction::LinkJobAction(ActionList &Inputs, types::ID Type)