Summary:
-fembed-bitcode infers -bitcode_bundle to ld64 but it is not correctly
passed when using LTO. LTO is a special case of -fembed-bitcode which
it doesn't require embed the bitcode in a special section in the object
file but it requires linker to save that as part of the final executable.
rdar://problem/29274226
Reviewers: mehdi_amini
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D26690
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@287084 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
-fembed-bitcode was only checking for old style LTO flag (-flto) but not
considering the new -flto= style option. That makes clang output bitcode
embedded in bitcode object when using -flto= and -fembed-bitcode= together.
Now clang should output normal bitcode file when using LTO and ignores
-fembed-bitcode option.
Reviewers: joker.eph
Subscribers: joker.eph, cfe-commits
Differential Revision: http://reviews.llvm.org/D20374
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@269961 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
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.
Depends on D17390
Reviewers: rsmith
Subscribers: yaron.keren, vsk, cfe-commits
Differential Revision: http://reviews.llvm.org/D17392
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@269202 91177308-0d34-0410-b5e6-96231b3b80d8
-bitcode_bundle is only passed to the darwin ld64 linker and it is only
implemented there. Remove the check on the linker flag.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@262286 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This is the clang driver part of the change to embedded bitcode. This
includes:
1. -fembed-bitcode option which breaks down the compilation into two
stages. The first stage emits optimized bitcode and the second stage
compiles bitcode into object file.
2. -fembed-bitcode-marker option which doesn't really break down to
two stages to speedup the compilation flow.
3. pass the correct linker flag to darwin linker if tool chains supports
embedded bitcode.
Reviewers: rsmith, thakis
Subscribers: thakis, cfe-commits
Differential Revision: http://reviews.llvm.org/D17390
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@262282 91177308-0d34-0410-b5e6-96231b3b80d8
Mehdi Amini