X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=unittests%2FExecutionEngine%2FMCJIT%2FMCJITTest.cpp;h=744bfdb4a01bc175923ec9ada297f19d524db842;hb=4e036ff575c54e01aea7f8028d282974480b071e;hp=f65ec96d944b91663886b9c9405a04845c391bb9;hpb=22af148912c8503e305d1cc8741293686d66b864;p=oota-llvm.git

diff --git a/unittests/ExecutionEngine/MCJIT/MCJITTest.cpp b/unittests/ExecutionEngine/MCJIT/MCJITTest.cpp
index f65ec96d944..744bfdb4a01 100644
--- a/unittests/ExecutionEngine/MCJIT/MCJITTest.cpp
+++ b/unittests/ExecutionEngine/MCJIT/MCJITTest.cpp
@@ -1,4 +1,4 @@
-//===- MCJITTest.cpp - Unit tests for the MCJIT ---------------------------===//
+//===- MCJITTest.cpp - Unit tests for the MCJIT -----------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -13,6 +13,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/ExecutionEngine/MCJIT.h"
+#include "llvm/Support/DynamicLibrary.h"
 #include "MCJITTestBase.h"
 #include "gtest/gtest.h"
 
@@ -88,7 +89,7 @@ TEST_F(MCJITTest, run_main) {
   EXPECT_TRUE(0 != ptr)
     << "Unable to get pointer to main() from JIT";
 
-  int (*FuncPtr)(void) = (int(*)(void))ptr;
+  int (*FuncPtr)() = (int(*)())ptr;
   int returnCode = FuncPtr();
   EXPECT_EQ(returnCode, rc);
 }
@@ -108,7 +109,7 @@ TEST_F(MCJITTest, return_global) {
   uint64_t rgvPtr = TheJIT->getFunctionAddress(ReturnGlobal->getName().str());
   EXPECT_TRUE(0 != rgvPtr);
 
-  int32_t(*FuncPtr)(void) = (int32_t(*)(void))rgvPtr;
+  int32_t(*FuncPtr)() = (int32_t(*)())rgvPtr;
   EXPECT_EQ(initialNum, FuncPtr())
     << "Invalid value for global returned from JITted function";
 }
@@ -180,7 +181,7 @@ TEST_F(MCJITTest, multiple_functions) {
   EXPECT_TRUE(0 != ptr)
     << "Unable to get pointer to outer function from JIT";
 
-  int32_t(*FuncPtr)(void) = (int32_t(*)(void))ptr;
+  int32_t(*FuncPtr)() = (int32_t(*)())ptr;
   EXPECT_EQ(innerRetVal, FuncPtr())
     << "Incorrect result returned from function";
 }
@@ -195,8 +196,89 @@ TEST_F(MCJITTest, multiple_decl_lookups) {
   void *A = TheJIT->getPointerToFunction(Foo);
   void *B = TheJIT->getPointerToFunction(Foo);
 
-  EXPECT_TRUE(A != 0) << "Failed lookup - test not correctly configured.";
+  EXPECT_TRUE(A != nullptr) << "Failed lookup - test not correctly configured.";
   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);
 }
+
+} // end anonymous namespace