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| author | Peter Collingbourne <peter@pcc.me.uk> | 2017-01-18 23:55:27 +0000 |
|---|---|---|
| committer | Peter Collingbourne <peter@pcc.me.uk> | 2017-01-18 23:55:27 +0000 |
| commit | 18aaea816ac4e32584d1b2c4ed05503a9576909e (patch) | |
| tree | e2fceff78cbd3a542fd8e77d8ee59e324ad64790 /include/clang/Frontend/CodeGenOptions.def | |
| parent | a845dd1cc1a7c5b977d365f265c22819e75046b3 (diff) | |
Move vtable type metadata emission behind a cc1-level flag.
In ThinLTO mode, type metadata will require the module to be written as a
multi-module bitcode file, which is currently incompatible with the Darwin
linker. It is also useful to be able to enable or disable multi-module bitcode
for testing purposes. This introduces a cc1-level flag, -f{,no-}lto-unit,
which is used by the driver to enable multi-module bitcode on all but
Darwin+ThinLTO, and can also be used to enable/disable the feature manually.
Differential Revision: https://reviews.llvm.org/D28877
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@292448 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/clang/Frontend/CodeGenOptions.def')
| -rw-r--r-- | include/clang/Frontend/CodeGenOptions.def | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/clang/Frontend/CodeGenOptions.def b/include/clang/Frontend/CodeGenOptions.def index 964a6cc2a0..d4b2049d61 100644 --- a/include/clang/Frontend/CodeGenOptions.def +++ b/include/clang/Frontend/CodeGenOptions.def @@ -89,6 +89,8 @@ CODEGENOPT(PrepareForLTO , 1, 0) ///< Set when -flto is enabled on the ///< compile step. CODEGENOPT(EmitSummaryIndex, 1, 0) ///< Set when -flto=thin is enabled on the ///< compile step. +CODEGENOPT(LTOUnit, 1, 0) ///< Emit IR to support LTO unit features (CFI, whole + ///< program vtable opt). CODEGENOPT(IncrementalLinkerCompatible, 1, 0) ///< Emit an object file which can ///< be used with an incremental ///< linker. |