mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +01:00
8d4f29ba83
failed to correctly propagate the NUW and NSW flags to the constant folder for two instructions. I've added a unittest to cover flag propagation for the rest of the instructions and constant expressions. llvm-svn: 198538
281 lines
9.1 KiB
C++
281 lines
9.1 KiB
C++
//===- llvm/unittest/IR/IRBuilderTest.cpp - IRBuilder tests ---------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/IR/IRBuilder.h"
|
|
#include "llvm/ADT/OwningPtr.h"
|
|
#include "llvm/IR/BasicBlock.h"
|
|
#include "llvm/IR/DataLayout.h"
|
|
#include "llvm/IR/Function.h"
|
|
#include "llvm/IR/IntrinsicInst.h"
|
|
#include "llvm/IR/LLVMContext.h"
|
|
#include "llvm/IR/MDBuilder.h"
|
|
#include "llvm/IR/Module.h"
|
|
#include "llvm/Support/NoFolder.h"
|
|
#include "gtest/gtest.h"
|
|
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
|
|
class IRBuilderTest : public testing::Test {
|
|
protected:
|
|
virtual void SetUp() {
|
|
M.reset(new Module("MyModule", Ctx));
|
|
FunctionType *FTy = FunctionType::get(Type::getVoidTy(Ctx),
|
|
/*isVarArg=*/false);
|
|
F = Function::Create(FTy, Function::ExternalLinkage, "", M.get());
|
|
BB = BasicBlock::Create(Ctx, "", F);
|
|
GV = new GlobalVariable(*M, Type::getFloatTy(Ctx), true,
|
|
GlobalValue::ExternalLinkage, 0);
|
|
}
|
|
|
|
virtual void TearDown() {
|
|
BB = 0;
|
|
M.reset();
|
|
}
|
|
|
|
LLVMContext Ctx;
|
|
OwningPtr<Module> M;
|
|
Function *F;
|
|
BasicBlock *BB;
|
|
GlobalVariable *GV;
|
|
};
|
|
|
|
TEST_F(IRBuilderTest, Lifetime) {
|
|
IRBuilder<> Builder(BB);
|
|
AllocaInst *Var1 = Builder.CreateAlloca(Builder.getInt8Ty());
|
|
AllocaInst *Var2 = Builder.CreateAlloca(Builder.getInt32Ty());
|
|
AllocaInst *Var3 = Builder.CreateAlloca(Builder.getInt8Ty(),
|
|
Builder.getInt32(123));
|
|
|
|
CallInst *Start1 = Builder.CreateLifetimeStart(Var1);
|
|
CallInst *Start2 = Builder.CreateLifetimeStart(Var2);
|
|
CallInst *Start3 = Builder.CreateLifetimeStart(Var3, Builder.getInt64(100));
|
|
|
|
EXPECT_EQ(Start1->getArgOperand(0), Builder.getInt64(-1));
|
|
EXPECT_EQ(Start2->getArgOperand(0), Builder.getInt64(-1));
|
|
EXPECT_EQ(Start3->getArgOperand(0), Builder.getInt64(100));
|
|
|
|
EXPECT_EQ(Start1->getArgOperand(1), Var1);
|
|
EXPECT_NE(Start2->getArgOperand(1), Var2);
|
|
EXPECT_EQ(Start3->getArgOperand(1), Var3);
|
|
|
|
Value *End1 = Builder.CreateLifetimeEnd(Var1);
|
|
Builder.CreateLifetimeEnd(Var2);
|
|
Builder.CreateLifetimeEnd(Var3);
|
|
|
|
IntrinsicInst *II_Start1 = dyn_cast<IntrinsicInst>(Start1);
|
|
IntrinsicInst *II_End1 = dyn_cast<IntrinsicInst>(End1);
|
|
ASSERT_TRUE(II_Start1 != NULL);
|
|
EXPECT_EQ(II_Start1->getIntrinsicID(), Intrinsic::lifetime_start);
|
|
ASSERT_TRUE(II_End1 != NULL);
|
|
EXPECT_EQ(II_End1->getIntrinsicID(), Intrinsic::lifetime_end);
|
|
}
|
|
|
|
TEST_F(IRBuilderTest, CreateCondBr) {
|
|
IRBuilder<> Builder(BB);
|
|
BasicBlock *TBB = BasicBlock::Create(Ctx, "", F);
|
|
BasicBlock *FBB = BasicBlock::Create(Ctx, "", F);
|
|
|
|
BranchInst *BI = Builder.CreateCondBr(Builder.getTrue(), TBB, FBB);
|
|
TerminatorInst *TI = BB->getTerminator();
|
|
EXPECT_EQ(BI, TI);
|
|
EXPECT_EQ(2u, TI->getNumSuccessors());
|
|
EXPECT_EQ(TBB, TI->getSuccessor(0));
|
|
EXPECT_EQ(FBB, TI->getSuccessor(1));
|
|
|
|
BI->eraseFromParent();
|
|
MDNode *Weights = MDBuilder(Ctx).createBranchWeights(42, 13);
|
|
BI = Builder.CreateCondBr(Builder.getTrue(), TBB, FBB, Weights);
|
|
TI = BB->getTerminator();
|
|
EXPECT_EQ(BI, TI);
|
|
EXPECT_EQ(2u, TI->getNumSuccessors());
|
|
EXPECT_EQ(TBB, TI->getSuccessor(0));
|
|
EXPECT_EQ(FBB, TI->getSuccessor(1));
|
|
EXPECT_EQ(Weights, TI->getMetadata(LLVMContext::MD_prof));
|
|
}
|
|
|
|
TEST_F(IRBuilderTest, LandingPadName) {
|
|
IRBuilder<> Builder(BB);
|
|
LandingPadInst *LP = Builder.CreateLandingPad(Builder.getInt32Ty(),
|
|
Builder.getInt32(0), 0, "LP");
|
|
EXPECT_EQ(LP->getName(), "LP");
|
|
}
|
|
|
|
TEST_F(IRBuilderTest, GetIntTy) {
|
|
IRBuilder<> Builder(BB);
|
|
IntegerType *Ty1 = Builder.getInt1Ty();
|
|
EXPECT_EQ(Ty1, IntegerType::get(Ctx, 1));
|
|
|
|
DataLayout* DL = new DataLayout(M.get());
|
|
IntegerType *IntPtrTy = Builder.getIntPtrTy(DL);
|
|
unsigned IntPtrBitSize = DL->getPointerSizeInBits(0);
|
|
EXPECT_EQ(IntPtrTy, IntegerType::get(Ctx, IntPtrBitSize));
|
|
delete DL;
|
|
}
|
|
|
|
TEST_F(IRBuilderTest, FastMathFlags) {
|
|
IRBuilder<> Builder(BB);
|
|
Value *F;
|
|
Instruction *FDiv, *FAdd;
|
|
|
|
F = Builder.CreateLoad(GV);
|
|
F = Builder.CreateFAdd(F, F);
|
|
|
|
EXPECT_FALSE(Builder.getFastMathFlags().any());
|
|
ASSERT_TRUE(isa<Instruction>(F));
|
|
FAdd = cast<Instruction>(F);
|
|
EXPECT_FALSE(FAdd->hasNoNaNs());
|
|
|
|
FastMathFlags FMF;
|
|
Builder.SetFastMathFlags(FMF);
|
|
|
|
F = Builder.CreateFAdd(F, F);
|
|
EXPECT_FALSE(Builder.getFastMathFlags().any());
|
|
|
|
FMF.setUnsafeAlgebra();
|
|
Builder.SetFastMathFlags(FMF);
|
|
|
|
F = Builder.CreateFAdd(F, F);
|
|
EXPECT_TRUE(Builder.getFastMathFlags().any());
|
|
ASSERT_TRUE(isa<Instruction>(F));
|
|
FAdd = cast<Instruction>(F);
|
|
EXPECT_TRUE(FAdd->hasNoNaNs());
|
|
|
|
// Now, try it with CreateBinOp
|
|
F = Builder.CreateBinOp(Instruction::FAdd, F, F);
|
|
EXPECT_TRUE(Builder.getFastMathFlags().any());
|
|
ASSERT_TRUE(isa<Instruction>(F));
|
|
FAdd = cast<Instruction>(F);
|
|
EXPECT_TRUE(FAdd->hasNoNaNs());
|
|
|
|
F = Builder.CreateFDiv(F, F);
|
|
EXPECT_TRUE(Builder.getFastMathFlags().any());
|
|
EXPECT_TRUE(Builder.getFastMathFlags().UnsafeAlgebra);
|
|
ASSERT_TRUE(isa<Instruction>(F));
|
|
FDiv = cast<Instruction>(F);
|
|
EXPECT_TRUE(FDiv->hasAllowReciprocal());
|
|
|
|
Builder.clearFastMathFlags();
|
|
|
|
F = Builder.CreateFDiv(F, F);
|
|
ASSERT_TRUE(isa<Instruction>(F));
|
|
FDiv = cast<Instruction>(F);
|
|
EXPECT_FALSE(FDiv->hasAllowReciprocal());
|
|
|
|
FMF.clear();
|
|
FMF.setAllowReciprocal();
|
|
Builder.SetFastMathFlags(FMF);
|
|
|
|
F = Builder.CreateFDiv(F, F);
|
|
EXPECT_TRUE(Builder.getFastMathFlags().any());
|
|
EXPECT_TRUE(Builder.getFastMathFlags().AllowReciprocal);
|
|
ASSERT_TRUE(isa<Instruction>(F));
|
|
FDiv = cast<Instruction>(F);
|
|
EXPECT_TRUE(FDiv->hasAllowReciprocal());
|
|
|
|
Builder.clearFastMathFlags();
|
|
|
|
F = Builder.CreateFDiv(F, F);
|
|
ASSERT_TRUE(isa<Instruction>(F));
|
|
FDiv = cast<Instruction>(F);
|
|
EXPECT_FALSE(FDiv->getFastMathFlags().any());
|
|
FDiv->copyFastMathFlags(FAdd);
|
|
EXPECT_TRUE(FDiv->hasNoNaNs());
|
|
|
|
}
|
|
|
|
TEST_F(IRBuilderTest, WrapFlags) {
|
|
IRBuilder<true, NoFolder> Builder(BB);
|
|
|
|
// Test instructions.
|
|
GlobalVariable *G = new GlobalVariable(*M, Builder.getInt32Ty(), true,
|
|
GlobalValue::ExternalLinkage, 0);
|
|
Value *V = Builder.CreateLoad(G);
|
|
EXPECT_TRUE(
|
|
cast<BinaryOperator>(Builder.CreateNSWAdd(V, V))->hasNoSignedWrap());
|
|
EXPECT_TRUE(
|
|
cast<BinaryOperator>(Builder.CreateNSWMul(V, V))->hasNoSignedWrap());
|
|
EXPECT_TRUE(
|
|
cast<BinaryOperator>(Builder.CreateNSWSub(V, V))->hasNoSignedWrap());
|
|
EXPECT_TRUE(cast<BinaryOperator>(
|
|
Builder.CreateShl(V, V, "", /* NUW */ false, /* NSW */ true))
|
|
->hasNoSignedWrap());
|
|
|
|
EXPECT_TRUE(
|
|
cast<BinaryOperator>(Builder.CreateNUWAdd(V, V))->hasNoUnsignedWrap());
|
|
EXPECT_TRUE(
|
|
cast<BinaryOperator>(Builder.CreateNUWMul(V, V))->hasNoUnsignedWrap());
|
|
EXPECT_TRUE(
|
|
cast<BinaryOperator>(Builder.CreateNUWSub(V, V))->hasNoUnsignedWrap());
|
|
EXPECT_TRUE(cast<BinaryOperator>(
|
|
Builder.CreateShl(V, V, "", /* NUW */ true, /* NSW */ false))
|
|
->hasNoUnsignedWrap());
|
|
|
|
// Test operators created with constants.
|
|
Constant *C = Builder.getInt32(42);
|
|
EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNSWAdd(C, C))
|
|
->hasNoSignedWrap());
|
|
EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNSWSub(C, C))
|
|
->hasNoSignedWrap());
|
|
EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNSWMul(C, C))
|
|
->hasNoSignedWrap());
|
|
EXPECT_TRUE(cast<OverflowingBinaryOperator>(
|
|
Builder.CreateShl(C, C, "", /* NUW */ false, /* NSW */ true))
|
|
->hasNoSignedWrap());
|
|
|
|
EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNUWAdd(C, C))
|
|
->hasNoUnsignedWrap());
|
|
EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNUWSub(C, C))
|
|
->hasNoUnsignedWrap());
|
|
EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNUWMul(C, C))
|
|
->hasNoUnsignedWrap());
|
|
EXPECT_TRUE(cast<OverflowingBinaryOperator>(
|
|
Builder.CreateShl(C, C, "", /* NUW */ true, /* NSW */ false))
|
|
->hasNoUnsignedWrap());
|
|
}
|
|
|
|
TEST_F(IRBuilderTest, RAIIHelpersTest) {
|
|
IRBuilder<> Builder(BB);
|
|
EXPECT_FALSE(Builder.getFastMathFlags().allowReciprocal());
|
|
MDBuilder MDB(M->getContext());
|
|
|
|
MDNode *FPMathA = MDB.createFPMath(0.01f);
|
|
MDNode *FPMathB = MDB.createFPMath(0.1f);
|
|
|
|
Builder.SetDefaultFPMathTag(FPMathA);
|
|
|
|
{
|
|
IRBuilder<>::FastMathFlagGuard Guard(Builder);
|
|
FastMathFlags FMF;
|
|
FMF.setAllowReciprocal();
|
|
Builder.SetFastMathFlags(FMF);
|
|
Builder.SetDefaultFPMathTag(FPMathB);
|
|
EXPECT_TRUE(Builder.getFastMathFlags().allowReciprocal());
|
|
EXPECT_EQ(FPMathB, Builder.getDefaultFPMathTag());
|
|
}
|
|
|
|
EXPECT_FALSE(Builder.getFastMathFlags().allowReciprocal());
|
|
EXPECT_EQ(FPMathA, Builder.getDefaultFPMathTag());
|
|
|
|
Value *F = Builder.CreateLoad(GV);
|
|
|
|
{
|
|
IRBuilder<>::InsertPointGuard Guard(Builder);
|
|
Builder.SetInsertPoint(cast<Instruction>(F));
|
|
EXPECT_EQ(F, Builder.GetInsertPoint());
|
|
}
|
|
|
|
EXPECT_EQ(BB->end(), Builder.GetInsertPoint());
|
|
EXPECT_EQ(BB, Builder.GetInsertBlock());
|
|
}
|
|
|
|
|
|
}
|