Pass code-model through Module IR to LTO which will use it.
Currently the code-model does not get saved in the module IR,
so if a code model is specified when compiling with LTO,
it gets lost and is not propagated properly to LTO. This patch,
along with one for the front end, fixes that.
Differential Revision: https://reviews.llvm.org/D52322
llvm-svn: 342760
diff --git a/llvm/lib/LTO/LTOBackend.cpp b/llvm/lib/LTO/LTOBackend.cpp
index eadbb41..be33ab8 100644
--- a/llvm/lib/LTO/LTOBackend.cpp
+++ b/llvm/lib/LTO/LTOBackend.cpp
@@ -138,9 +138,15 @@
RelocModel =
M.getPICLevel() == PICLevel::NotPIC ? Reloc::Static : Reloc::PIC_;
+ Optional<CodeModel::Model> CodeModel;
+ if (Conf.CodeModel)
+ CodeModel = *Conf.CodeModel;
+ else
+ CodeModel = M.getCodeModel();
+
return std::unique_ptr<TargetMachine>(TheTarget->createTargetMachine(
TheTriple, Conf.CPU, Features.getString(), Conf.Options, RelocModel,
- Conf.CodeModel, Conf.CGOptLevel));
+ CodeModel, Conf.CGOptLevel));
}
static void runNewPMPasses(Config &Conf, Module &Mod, TargetMachine *TM,