[PATCH] D17389: Embed bitcode in object file (clang cc1 part)

[Steven Wu via cfe-commits]

steven_wu created this revision.
steven_wu added a subscriber: cfe-commits.
Herald added subscribers: dschuff, jfb.

Teach clang to embed bitcode inside bitcode. When -fembed-bitcode cc1
option is used, clang will embed both the input bitcode and cc1
commandline into the bitcode in special sections before compiling to
the object file.  Using -fembed-bitcode-marker will only introduce a
marker in both sections.

Don't emit uselist order for -fembed-bitcode

Embedded bitcode are embedded without serialization in their normal
flow. No uselist order need to be recorded.

Apply whitelist to options used in embedded bitcode

Add a whitelist for the options that are allowed to be used with
-fembed-bitcode. That is minimize the number of the cc1 command
that needs to be embedded in the object file.

http://reviews.llvm.org/D17389

Files:
  include/clang/Basic/DiagnosticDriverKinds.td
  include/clang/CodeGen/BackendUtil.h
  include/clang/Frontend/CodeGenOptions.def
  include/clang/Frontend/CodeGenOptions.h
  lib/CodeGen/BackendUtil.cpp
  lib/CodeGen/CodeGenAction.cpp
  lib/Driver/Tools.cpp
  lib/Driver/Tools.h
  lib/Frontend/CompilerInvocation.cpp
  test/Driver/embed-bitcode.c
  test/Frontend/embed-bitcode.ll

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