diff options
Diffstat (limited to 'unittests/Transforms/Utils/Cloning.cpp')
| -rw-r--r-- | unittests/Transforms/Utils/Cloning.cpp | 235 |
1 files changed, 234 insertions, 1 deletions
diff --git a/unittests/Transforms/Utils/Cloning.cpp b/unittests/Transforms/Utils/Cloning.cpp index e19ae5b..fb27dc1 100644 --- a/unittests/Transforms/Utils/Cloning.cpp +++ b/unittests/Transforms/Utils/Cloning.cpp @@ -7,15 +7,22 @@ // //===----------------------------------------------------------------------===// +#include "llvm/Transforms/Utils/Cloning.h" +#include "llvm/ADT/ArrayRef.h" #include "llvm/ADT/STLExtras.h" #include "llvm/ADT/SmallPtrSet.h" #include "llvm/IR/Argument.h" #include "llvm/IR/Constant.h" +#include "llvm/IR/DebugInfo.h" +#include "llvm/IR/DIBuilder.h" #include "llvm/IR/Function.h" +#include "llvm/IR/IRBuilder.h" +#include "llvm/IR/InstIterator.h" #include "llvm/IR/Instructions.h" +#include "llvm/IR/IntrinsicInst.h" #include "llvm/IR/IRBuilder.h" +#include "llvm/IR/Module.h" #include "llvm/IR/LLVMContext.h" -#include "llvm/Transforms/Utils/Cloning.h" #include "gtest/gtest.h" using namespace llvm; @@ -173,4 +180,230 @@ TEST_F(CloneInstruction, Attributes) { delete F2; } +TEST_F(CloneInstruction, CallingConvention) { + Type *ArgTy1[] = { Type::getInt32PtrTy(context) }; + FunctionType *FT1 = FunctionType::get(Type::getVoidTy(context), ArgTy1, false); + + Function *F1 = Function::Create(FT1, Function::ExternalLinkage); + F1->setCallingConv(CallingConv::Cold); + BasicBlock *BB = BasicBlock::Create(context, "", F1); + IRBuilder<> Builder(BB); + Builder.CreateRetVoid(); + + Function *F2 = Function::Create(FT1, Function::ExternalLinkage); + + SmallVector<ReturnInst*, 4> Returns; + ValueToValueMapTy VMap; + VMap[F1->arg_begin()] = F2->arg_begin(); + + CloneFunctionInto(F2, F1, VMap, false, Returns); + EXPECT_EQ(CallingConv::Cold, F2->getCallingConv()); + + delete F1; + delete F2; +} + +class CloneFunc : public ::testing::Test { +protected: + virtual void SetUp() { + SetupModule(); + CreateOldFunc(); + CreateNewFunc(); + SetupFinder(); + } + + virtual void TearDown() { + delete Finder; + } + + void SetupModule() { + M = new Module("", C); + } + + void CreateOldFunc() { + FunctionType* FuncType = FunctionType::get(Type::getVoidTy(C), false); + OldFunc = Function::Create(FuncType, GlobalValue::PrivateLinkage, "f", M); + CreateOldFunctionBodyAndDI(); + } + + void CreateOldFunctionBodyAndDI() { + DIBuilder DBuilder(*M); + IRBuilder<> IBuilder(C); + + // Function DI + DIFile File = DBuilder.createFile("filename.c", "/file/dir/"); + DIArray ParamTypes = DBuilder.getOrCreateArray(ArrayRef<Value*>()); + DICompositeType FuncType = DBuilder.createSubroutineType(File, ParamTypes); + DICompileUnit CU = DBuilder.createCompileUnit(dwarf::DW_LANG_C99, + "filename.c", "/file/dir", "CloneFunc", false, "", 0); + + DISubprogram Subprogram = DBuilder.createFunction(CU, "f", "f", File, 4, + FuncType, true, true, 3, 0, false, OldFunc); + + // Function body + BasicBlock* Entry = BasicBlock::Create(C, "", OldFunc); + IBuilder.SetInsertPoint(Entry); + DebugLoc Loc = DebugLoc::get(3, 2, Subprogram); + IBuilder.SetCurrentDebugLocation(Loc); + AllocaInst* Alloca = IBuilder.CreateAlloca(IntegerType::getInt32Ty(C)); + IBuilder.SetCurrentDebugLocation(DebugLoc::get(4, 2, Subprogram)); + Value* AllocaContent = IBuilder.getInt32(1); + Instruction* Store = IBuilder.CreateStore(AllocaContent, Alloca); + IBuilder.SetCurrentDebugLocation(DebugLoc::get(5, 2, Subprogram)); + Instruction* Terminator = IBuilder.CreateRetVoid(); + + // Create a local variable around the alloca + DIType IntType = DBuilder.createBasicType("int", 32, 0, + dwarf::DW_ATE_signed); + DIVariable Variable = DBuilder.createLocalVariable( + dwarf::DW_TAG_auto_variable, Subprogram, "x", File, 5, IntType, true); + DBuilder.insertDeclare(Alloca, Variable, Store); + DBuilder.insertDbgValueIntrinsic(AllocaContent, 0, Variable, Terminator); + // Finalize the debug info + DBuilder.finalize(); + + + // Create another, empty, compile unit + DIBuilder DBuilder2(*M); + DBuilder2.createCompileUnit(dwarf::DW_LANG_C99, + "extra.c", "/file/dir", "CloneFunc", false, "", 0); + DBuilder2.finalize(); + } + + void CreateNewFunc() { + ValueToValueMapTy VMap; + NewFunc = CloneFunction(OldFunc, VMap, true, NULL); + M->getFunctionList().push_back(NewFunc); + } + + void SetupFinder() { + Finder = new DebugInfoFinder(); + Finder->processModule(*M); + } + + LLVMContext C; + Function* OldFunc; + Function* NewFunc; + Module* M; + DebugInfoFinder* Finder; +}; + +// Test that a new, distinct function was created. +TEST_F(CloneFunc, NewFunctionCreated) { + EXPECT_NE(OldFunc, NewFunc); +} + +// Test that a new subprogram entry was added and is pointing to the new +// function, while the original subprogram still points to the old one. +TEST_F(CloneFunc, Subprogram) { + unsigned SubprogramCount = Finder->subprogram_count(); + EXPECT_EQ(2U, SubprogramCount); + + auto Iter = Finder->subprograms().begin(); + DISubprogram Sub1(*Iter); + EXPECT_TRUE(Sub1.Verify()); + Iter++; + DISubprogram Sub2(*Iter); + EXPECT_TRUE(Sub2.Verify()); + + EXPECT_TRUE((Sub1.getFunction() == OldFunc && Sub2.getFunction() == NewFunc) + || (Sub1.getFunction() == NewFunc && Sub2.getFunction() == OldFunc)); +} + +// Test that the new subprogram entry was not added to the CU which doesn't +// contain the old subprogram entry. +TEST_F(CloneFunc, SubprogramInRightCU) { + EXPECT_EQ(2U, Finder->compile_unit_count()); + + auto Iter = Finder->compile_units().begin(); + DICompileUnit CU1(*Iter); + EXPECT_TRUE(CU1.Verify()); + Iter++; + DICompileUnit CU2(*Iter); + EXPECT_TRUE(CU2.Verify()); + EXPECT_TRUE(CU1.getSubprograms().getNumElements() == 0 + || CU2.getSubprograms().getNumElements() == 0); +} + +// Test that instructions in the old function still belong to it in the +// metadata, while instruction in the new function belong to the new one. +TEST_F(CloneFunc, InstructionOwnership) { + inst_iterator OldIter = inst_begin(OldFunc); + inst_iterator OldEnd = inst_end(OldFunc); + inst_iterator NewIter = inst_begin(NewFunc); + inst_iterator NewEnd = inst_end(NewFunc); + while (OldIter != OldEnd && NewIter != NewEnd) { + Instruction& OldI = *OldIter; + Instruction& NewI = *NewIter; + EXPECT_NE(&OldI, &NewI); + + EXPECT_EQ(OldI.hasMetadata(), NewI.hasMetadata()); + if (OldI.hasMetadata()) { + const DebugLoc& OldDL = OldI.getDebugLoc(); + const DebugLoc& NewDL = NewI.getDebugLoc(); + + // Verify that the debug location data is the same + EXPECT_EQ(OldDL.getLine(), NewDL.getLine()); + EXPECT_EQ(OldDL.getCol(), NewDL.getCol()); + + // But that they belong to different functions + DISubprogram OldSubprogram(OldDL.getScope(C)); + DISubprogram NewSubprogram(NewDL.getScope(C)); + EXPECT_TRUE(OldSubprogram.Verify()); + EXPECT_TRUE(NewSubprogram.Verify()); + EXPECT_EQ(OldFunc, OldSubprogram.getFunction()); + EXPECT_EQ(NewFunc, NewSubprogram.getFunction()); + } + + ++OldIter; + ++NewIter; + } + EXPECT_EQ(OldEnd, OldIter); + EXPECT_EQ(NewEnd, NewIter); +} + +// Test that the arguments for debug intrinsics in the new function were +// properly cloned +TEST_F(CloneFunc, DebugIntrinsics) { + inst_iterator OldIter = inst_begin(OldFunc); + inst_iterator OldEnd = inst_end(OldFunc); + inst_iterator NewIter = inst_begin(NewFunc); + inst_iterator NewEnd = inst_end(NewFunc); + while (OldIter != OldEnd && NewIter != NewEnd) { + Instruction& OldI = *OldIter; + Instruction& NewI = *NewIter; + if (DbgDeclareInst* OldIntrin = dyn_cast<DbgDeclareInst>(&OldI)) { + DbgDeclareInst* NewIntrin = dyn_cast<DbgDeclareInst>(&NewI); + EXPECT_TRUE(NewIntrin); + + // Old address must belong to the old function + EXPECT_EQ(OldFunc, cast<AllocaInst>(OldIntrin->getAddress())-> + getParent()->getParent()); + // New address must belong to the new function + EXPECT_EQ(NewFunc, cast<AllocaInst>(NewIntrin->getAddress())-> + getParent()->getParent()); + + // Old variable must belong to the old function + EXPECT_EQ(OldFunc, DISubprogram(DIVariable(OldIntrin->getVariable()) + .getContext()).getFunction()); + // New variable must belong to the New function + EXPECT_EQ(NewFunc, DISubprogram(DIVariable(NewIntrin->getVariable()) + .getContext()).getFunction()); + } else if (DbgValueInst* OldIntrin = dyn_cast<DbgValueInst>(&OldI)) { + DbgValueInst* NewIntrin = dyn_cast<DbgValueInst>(&NewI); + EXPECT_TRUE(NewIntrin); + + // Old variable must belong to the old function + EXPECT_EQ(OldFunc, DISubprogram(DIVariable(OldIntrin->getVariable()) + .getContext()).getFunction()); + // New variable must belong to the New function + EXPECT_EQ(NewFunc, DISubprogram(DIVariable(NewIntrin->getVariable()) + .getContext()).getFunction()); + } + + ++OldIter; + ++NewIter; + } +} + } |