[ORC] Set setCloneToNewContextOnEmit on LLJIT's transform layer when needed.
Based on Don Hinton's patch in https://reviews.llvm.org/D72406. This feature
was accidentally left out of e9e26c01cd865da678b1af6ba5f417c713956a66, and
would have pessimized concurrent compilation in the default case.
Thanks for spotting this Don!
diff --git a/llvm/lib/ExecutionEngine/Orc/LLJIT.cpp b/llvm/lib/ExecutionEngine/Orc/LLJIT.cpp
index 50f7d3b..fbae75b 100644
--- a/llvm/lib/ExecutionEngine/Orc/LLJIT.cpp
+++ b/llvm/lib/ExecutionEngine/Orc/LLJIT.cpp
@@ -150,10 +150,11 @@
}
CompileLayer = std::make_unique<IRCompileLayer>(
*ES, ObjTransformLayer, std::move(*CompileFunction));
+ TransformLayer = std::make_unique<IRTransformLayer>(*ES, *CompileLayer);
}
if (S.NumCompileThreads > 0) {
- CompileLayer->setCloneToNewContextOnEmit(true);
+ TransformLayer->setCloneToNewContextOnEmit(true);
CompileThreads = std::make_unique<ThreadPool>(S.NumCompileThreads);
ES->setDispatchMaterialization(
[this](JITDylib &JD, std::unique_ptr<MaterializationUnit> MU) {
@@ -163,8 +164,6 @@
CompileThreads->async(std::move(Work));
});
}
-
- TransformLayer = std::make_unique<IRTransformLayer>(*ES, *CompileLayer);
}
std::string LLJIT::mangle(StringRef UnmangledName) {