[ExecutionEngine] Re-apply r241962 with fixes for ARM.
Patch by Pierre-Andre Saulais. Thanks Pierre-Andre!
llvm-svn: 242213
diff --git a/llvm/unittests/ExecutionEngine/MCJIT/MCJITTest.cpp b/llvm/unittests/ExecutionEngine/MCJIT/MCJITTest.cpp
index f65ec96..01e796d 100644
--- a/llvm/unittests/ExecutionEngine/MCJIT/MCJITTest.cpp
+++ b/llvm/unittests/ExecutionEngine/MCJIT/MCJITTest.cpp
@@ -13,6 +13,7 @@
//===----------------------------------------------------------------------===//
#include "llvm/ExecutionEngine/MCJIT.h"
+#include "llvm/Support/DynamicLibrary.h"
#include "MCJITTestBase.h"
#include "gtest/gtest.h"
@@ -199,4 +200,85 @@
EXPECT_EQ(A, B) << "Repeat calls to getPointerToFunction fail.";
}
+typedef void * (*FunctionHandlerPtr)(const std::string &str);
+
+TEST_F(MCJITTest, lazy_function_creator_pointer) {
+ SKIP_UNSUPPORTED_PLATFORM;
+
+ Function *Foo = insertExternalReferenceToFunction<int32_t(void)>(M.get(),
+ "\1Foo");
+ startFunction<int32_t(void)>(M.get(), "Parent");
+ CallInst *Call = Builder.CreateCall(Foo, {});
+ Builder.CreateRet(Call);
+
+ createJIT(std::move(M));
+
+ // Set up the lazy function creator that records the name of the last
+ // unresolved external function found in the module. Using a function pointer
+ // prevents us from capturing local variables, which is why this is static.
+ static std::string UnresolvedExternal;
+ FunctionHandlerPtr UnresolvedHandler = [] (const std::string &str) {
+ // Try to resolve the function in the current process before marking it as
+ // unresolved. This solves an issue on ARM where '__aeabi_*' function names
+ // are passed to this handler.
+ void *symbol =
+ llvm::sys::DynamicLibrary::SearchForAddressOfSymbol(str.c_str());
+ if (symbol) {
+ return symbol;
+ }
+
+ UnresolvedExternal = str;
+ return (void *)(uintptr_t)-1;
+ };
+ TheJIT->InstallLazyFunctionCreator(UnresolvedHandler);
+
+ // JIT the module.
+ TheJIT->finalizeObject();
+
+ // Verify that our handler was called.
+ EXPECT_EQ(UnresolvedExternal, "Foo");
+}
+
+TEST_F(MCJITTest, lazy_function_creator_lambda) {
+ SKIP_UNSUPPORTED_PLATFORM;
+
+ Function *Foo1 = insertExternalReferenceToFunction<int32_t(void)>(M.get(),
+ "\1Foo1");
+ Function *Foo2 = insertExternalReferenceToFunction<int32_t(void)>(M.get(),
+ "\1Foo2");
+ startFunction<int32_t(void)>(M.get(), "Parent");
+ CallInst *Call1 = Builder.CreateCall(Foo1, {});
+ CallInst *Call2 = Builder.CreateCall(Foo2, {});
+ Value *Result = Builder.CreateAdd(Call1, Call2);
+ Builder.CreateRet(Result);
+
+ createJIT(std::move(M));
+
+ // Set up the lazy function creator that records the name of unresolved
+ // external functions in the module.
+ std::vector<std::string> UnresolvedExternals;
+ auto UnresolvedHandler = [&UnresolvedExternals] (const std::string &str) {
+ // Try to resolve the function in the current process before marking it as
+ // unresolved. This solves an issue on ARM where '__aeabi_*' function names
+ // are passed to this handler.
+ void *symbol =
+ llvm::sys::DynamicLibrary::SearchForAddressOfSymbol(str.c_str());
+ if (symbol) {
+ return symbol;
+ }
+ UnresolvedExternals.push_back(str);
+ return (void *)(uintptr_t)-1;
+ };
+ TheJIT->InstallLazyFunctionCreator(UnresolvedHandler);
+
+ // JIT the module.
+ TheJIT->finalizeObject();
+
+ // Verify that our handler was called for each unresolved function.
+ auto I = UnresolvedExternals.begin(), E = UnresolvedExternals.end();
+ EXPECT_EQ(UnresolvedExternals.size(), 2u);
+ EXPECT_FALSE(std::find(I, E, "Foo1") == E);
+ EXPECT_FALSE(std::find(I, E, "Foo2") == E);
+}
+
}