Merge remote-tracking branch 'upstream/master' into merge-20130502

Conflicts:
	lib/Support/Unix/Signals.inc
	unittests/Transforms/Utils/Cloning.cpp

Change-Id: I027581a4390ec3ce4cd8d33da8b5f4c0c7d372c8

1 files changed, 95 insertions, 0 deletions

diff --git a/unittests/ExecutionEngine/MCJIT/MCJITCAPITest.cpp b/unittests/ExecutionEngine/MCJIT/MCJITCAPITest.cpp
new file mode 100644
index 0000000..d8cf6c5
--- /dev/null
+++ b/unittests/ExecutionEngine/MCJIT/MCJITCAPITest.cpp
@@ -0,0 +1,95 @@
+//===- MCJITTest.cpp - Unit tests for the MCJIT ---------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This test suite verifies basic MCJIT functionality when invoked form the C
+// API.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm-c/Analysis.h"
+#include "llvm-c/Core.h"
+#include "llvm-c/ExecutionEngine.h"
+#include "llvm-c/Target.h"
+#include "llvm-c/Transforms/Scalar.h"
+#include "llvm/Support/Host.h"
+#include "MCJITTestAPICommon.h"
+#include "gtest/gtest.h"
+
+using namespace llvm;
+
+class MCJITCAPITest : public testing::Test, public MCJITTestAPICommon {
+protected:
+  MCJITCAPITest() {
+    // The architectures below are known to be compatible with MCJIT as they
+    // are copied from test/ExecutionEngine/MCJIT/lit.local.cfg and should be
+    // kept in sync.
+    SupportedArchs.push_back(Triple::arm);
+    SupportedArchs.push_back(Triple::mips);
+    SupportedArchs.push_back(Triple::x86);
+    SupportedArchs.push_back(Triple::x86_64);
+
+    // The operating systems below are known to be sufficiently incompatible
+    // that they will fail the MCJIT C API tests.
+    UnsupportedOSs.push_back(Triple::Cygwin);
+  }
+};
+
+TEST_F(MCJITCAPITest, simple_function) {
+  SKIP_UNSUPPORTED_PLATFORM;
+  
+  char *error = 0;
+  
+  // Creates a function that returns 42, compiles it, and runs it.
+  
+  LLVMModuleRef module = LLVMModuleCreateWithName("simple_module");
+  
+  LLVMValueRef function = LLVMAddFunction(
+    module, "simple_function", LLVMFunctionType(LLVMInt32Type(), 0, 0, 0));
+  LLVMSetFunctionCallConv(function, LLVMCCallConv);
+  
+  LLVMBasicBlockRef entry = LLVMAppendBasicBlock(function, "entry");
+  LLVMBuilderRef builder = LLVMCreateBuilder();
+  LLVMPositionBuilderAtEnd(builder, entry);
+  LLVMBuildRet(builder, LLVMConstInt(LLVMInt32Type(), 42, 0));
+  
+  LLVMVerifyModule(module, LLVMAbortProcessAction, &error);
+  LLVMDisposeMessage(error);
+  
+  LLVMDisposeBuilder(builder);
+  
+  LLVMMCJITCompilerOptions options;
+  LLVMInitializeMCJITCompilerOptions(&options, sizeof(options));
+  options.OptLevel = 2;
+  
+  // Just ensure that this field still exists.
+  options.NoFramePointerElim = false;
+  
+  LLVMExecutionEngineRef engine;
+  ASSERT_EQ(
+    0, LLVMCreateMCJITCompilerForModule(&engine, module, &options,
+                                        sizeof(options), &error));
+  
+  LLVMPassManagerRef pass = LLVMCreatePassManager();
+  LLVMAddTargetData(LLVMGetExecutionEngineTargetData(engine), pass);
+  LLVMAddConstantPropagationPass(pass);
+  LLVMAddInstructionCombiningPass(pass);
+  LLVMRunPassManager(pass, module);
+  LLVMDisposePassManager(pass);
+  
+  union {
+    void *raw;
+    int (*usable)();
+  } functionPointer;
+  functionPointer.raw = LLVMGetPointerToGlobal(engine, function);
+  
+  EXPECT_EQ(42, functionPointer.usable());
+  
+  LLVMDisposeExecutionEngine(engine);
+}
+