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llvm-mirror/unittests/IR/InstructionsTest.cpp
Jay Foad 9a5af2ea92 [IR] Allow fast math flags on calls with floating point array type. 
Summary:
This extends the rules for when a call instruction is deemed to be an
FPMathOperator, which is based on the type of the call (i.e. the return
type of the function being called). Previously we only allowed
floating-point and vector-of-floating-point types. Now we also allow
arrays (nested to any depth) of floating-point and
vector-of-floating-point types.

This was motivated by llpc, the pipeline compiler for AMD GPUs
(https://github.com/GPUOpen-Drivers/llpc). llpc has many math library
functions that operate on vectors, typically represented as <4 x float>,
and some that operate on matrices, typically represented as
[4 x <4 x float>], and it's useful to be able to decorate calls to all
of them with fast math flags.

Reviewers: spatel, wristow, arsenm, hfinkel, aemerson, efriedma, cameron.mcinally, mcberg2017, jmolloy

Subscribers: wdng, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D69161
2019-10-30 14:00:33 +00:00

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46 KiB
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//===- llvm/unittest/IR/InstructionsTest.cpp - Instructions unit tests ----===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/AsmParser/Parser.h"
#include "llvm/IR/Instructions.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/MDBuilder.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/NoFolder.h"
#include "llvm/IR/Operator.h"
#include "llvm/Support/SourceMgr.h"
#include "gmock/gmock-matchers.h"
#include "gtest/gtest.h"
#include <memory>
namespace llvm {
namespace {
static std::unique_ptr<Module> parseIR(LLVMContext &C, const char *IR) {
SMDiagnostic Err;
std::unique_ptr<Module> Mod = parseAssemblyString(IR, Err, C);
if (!Mod)
Err.print("InstructionsTests", errs());
return Mod;
}
TEST(InstructionsTest, ReturnInst) {
LLVMContext C;
// test for PR6589
const ReturnInst* r0 = ReturnInst::Create(C);
EXPECT_EQ(r0->getNumOperands(), 0U);
EXPECT_EQ(r0->op_begin(), r0->op_end());
IntegerType* Int1 = IntegerType::get(C, 1);
Constant* One = ConstantInt::get(Int1, 1, true);
const ReturnInst* r1 = ReturnInst::Create(C, One);
EXPECT_EQ(1U, r1->getNumOperands());
User::const_op_iterator b(r1->op_begin());
EXPECT_NE(r1->op_end(), b);
EXPECT_EQ(One, *b);
EXPECT_EQ(One, r1->getOperand(0));
++b;
EXPECT_EQ(r1->op_end(), b);
// clean up
delete r0;
delete r1;
}
// Test fixture that provides a module and a single function within it. Useful
// for tests that need to refer to the function in some way.
class ModuleWithFunctionTest : public testing::Test {
protected:
ModuleWithFunctionTest() : M(new Module("MyModule", Ctx)) {
FArgTypes.push_back(Type::getInt8Ty(Ctx));
FArgTypes.push_back(Type::getInt32Ty(Ctx));
FArgTypes.push_back(Type::getInt64Ty(Ctx));
FunctionType *FTy =
FunctionType::get(Type::getVoidTy(Ctx), FArgTypes, false);
F = Function::Create(FTy, Function::ExternalLinkage, "", M.get());
}
LLVMContext Ctx;
std::unique_ptr<Module> M;
SmallVector<Type *, 3> FArgTypes;
Function *F;
};
TEST_F(ModuleWithFunctionTest, CallInst) {
Value *Args[] = {ConstantInt::get(Type::getInt8Ty(Ctx), 20),
ConstantInt::get(Type::getInt32Ty(Ctx), 9999),
ConstantInt::get(Type::getInt64Ty(Ctx), 42)};
std::unique_ptr<CallInst> Call(CallInst::Create(F, Args));
// Make sure iteration over a call's arguments works as expected.
unsigned Idx = 0;
for (Value *Arg : Call->arg_operands()) {
EXPECT_EQ(FArgTypes[Idx], Arg->getType());
EXPECT_EQ(Call->getArgOperand(Idx)->getType(), Arg->getType());
Idx++;
}
}
TEST_F(ModuleWithFunctionTest, InvokeInst) {
BasicBlock *BB1 = BasicBlock::Create(Ctx, "", F);
BasicBlock *BB2 = BasicBlock::Create(Ctx, "", F);
Value *Args[] = {ConstantInt::get(Type::getInt8Ty(Ctx), 20),
ConstantInt::get(Type::getInt32Ty(Ctx), 9999),
ConstantInt::get(Type::getInt64Ty(Ctx), 42)};
std::unique_ptr<InvokeInst> Invoke(InvokeInst::Create(F, BB1, BB2, Args));
// Make sure iteration over invoke's arguments works as expected.
unsigned Idx = 0;
for (Value *Arg : Invoke->arg_operands()) {
EXPECT_EQ(FArgTypes[Idx], Arg->getType());
EXPECT_EQ(Invoke->getArgOperand(Idx)->getType(), Arg->getType());
Idx++;
}
}
TEST(InstructionsTest, BranchInst) {
LLVMContext C;
// Make a BasicBlocks
BasicBlock* bb0 = BasicBlock::Create(C);
BasicBlock* bb1 = BasicBlock::Create(C);
// Mandatory BranchInst
const BranchInst* b0 = BranchInst::Create(bb0);
EXPECT_TRUE(b0->isUnconditional());
EXPECT_FALSE(b0->isConditional());
EXPECT_EQ(1U, b0->getNumSuccessors());
// check num operands
EXPECT_EQ(1U, b0->getNumOperands());
EXPECT_NE(b0->op_begin(), b0->op_end());
EXPECT_EQ(b0->op_end(), std::next(b0->op_begin()));
EXPECT_EQ(b0->op_end(), std::next(b0->op_begin()));
IntegerType* Int1 = IntegerType::get(C, 1);
Constant* One = ConstantInt::get(Int1, 1, true);
// Conditional BranchInst
BranchInst* b1 = BranchInst::Create(bb0, bb1, One);
EXPECT_FALSE(b1->isUnconditional());
EXPECT_TRUE(b1->isConditional());
EXPECT_EQ(2U, b1->getNumSuccessors());
// check num operands
EXPECT_EQ(3U, b1->getNumOperands());
User::const_op_iterator b(b1->op_begin());
// check COND
EXPECT_NE(b, b1->op_end());
EXPECT_EQ(One, *b);
EXPECT_EQ(One, b1->getOperand(0));
EXPECT_EQ(One, b1->getCondition());
++b;
// check ELSE
EXPECT_EQ(bb1, *b);
EXPECT_EQ(bb1, b1->getOperand(1));
EXPECT_EQ(bb1, b1->getSuccessor(1));
++b;
// check THEN
EXPECT_EQ(bb0, *b);
EXPECT_EQ(bb0, b1->getOperand(2));
EXPECT_EQ(bb0, b1->getSuccessor(0));
++b;
EXPECT_EQ(b1->op_end(), b);
// clean up
delete b0;
delete b1;
delete bb0;
delete bb1;
}
TEST(InstructionsTest, CastInst) {
LLVMContext C;
Type *Int8Ty = Type::getInt8Ty(C);
Type *Int16Ty = Type::getInt16Ty(C);
Type *Int32Ty = Type::getInt32Ty(C);
Type *Int64Ty = Type::getInt64Ty(C);
Type *V8x8Ty = VectorType::get(Int8Ty, 8);
Type *V8x64Ty = VectorType::get(Int64Ty, 8);
Type *X86MMXTy = Type::getX86_MMXTy(C);
Type *HalfTy = Type::getHalfTy(C);
Type *FloatTy = Type::getFloatTy(C);
Type *DoubleTy = Type::getDoubleTy(C);
Type *V2Int32Ty = VectorType::get(Int32Ty, 2);
Type *V2Int64Ty = VectorType::get(Int64Ty, 2);
Type *V4Int16Ty = VectorType::get(Int16Ty, 4);
Type *Int32PtrTy = PointerType::get(Int32Ty, 0);
Type *Int64PtrTy = PointerType::get(Int64Ty, 0);
Type *Int32PtrAS1Ty = PointerType::get(Int32Ty, 1);
Type *Int64PtrAS1Ty = PointerType::get(Int64Ty, 1);
Type *V2Int32PtrAS1Ty = VectorType::get(Int32PtrAS1Ty, 2);
Type *V2Int64PtrAS1Ty = VectorType::get(Int64PtrAS1Ty, 2);
Type *V4Int32PtrAS1Ty = VectorType::get(Int32PtrAS1Ty, 4);
Type *V4Int64PtrAS1Ty = VectorType::get(Int64PtrAS1Ty, 4);
Type *V2Int64PtrTy = VectorType::get(Int64PtrTy, 2);
Type *V2Int32PtrTy = VectorType::get(Int32PtrTy, 2);
Type *V4Int32PtrTy = VectorType::get(Int32PtrTy, 4);
const Constant* c8 = Constant::getNullValue(V8x8Ty);
const Constant* c64 = Constant::getNullValue(V8x64Ty);
const Constant *v2ptr32 = Constant::getNullValue(V2Int32PtrTy);
EXPECT_TRUE(CastInst::isCastable(V8x8Ty, X86MMXTy));
EXPECT_TRUE(CastInst::isCastable(X86MMXTy, V8x8Ty));
EXPECT_FALSE(CastInst::isCastable(Int64Ty, X86MMXTy));
EXPECT_TRUE(CastInst::isCastable(V8x64Ty, V8x8Ty));
EXPECT_TRUE(CastInst::isCastable(V8x8Ty, V8x64Ty));
EXPECT_EQ(CastInst::Trunc, CastInst::getCastOpcode(c64, true, V8x8Ty, true));
EXPECT_EQ(CastInst::SExt, CastInst::getCastOpcode(c8, true, V8x64Ty, true));
EXPECT_FALSE(CastInst::isBitCastable(V8x8Ty, X86MMXTy));
EXPECT_FALSE(CastInst::isBitCastable(X86MMXTy, V8x8Ty));
EXPECT_FALSE(CastInst::isBitCastable(Int64Ty, X86MMXTy));
EXPECT_FALSE(CastInst::isBitCastable(V8x64Ty, V8x8Ty));
EXPECT_FALSE(CastInst::isBitCastable(V8x8Ty, V8x64Ty));
// Check address space casts are rejected since we don't know the sizes here
EXPECT_FALSE(CastInst::isBitCastable(Int32PtrTy, Int32PtrAS1Ty));
EXPECT_FALSE(CastInst::isBitCastable(Int32PtrAS1Ty, Int32PtrTy));
EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrTy, V2Int32PtrAS1Ty));
EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V2Int32PtrTy));
EXPECT_TRUE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V2Int64PtrAS1Ty));
EXPECT_TRUE(CastInst::isCastable(V2Int32PtrAS1Ty, V2Int32PtrTy));
EXPECT_EQ(CastInst::AddrSpaceCast, CastInst::getCastOpcode(v2ptr32, true,
V2Int32PtrAS1Ty,
true));
// Test mismatched number of elements for pointers
EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V4Int64PtrAS1Ty));
EXPECT_FALSE(CastInst::isBitCastable(V4Int64PtrAS1Ty, V2Int32PtrAS1Ty));
EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V4Int32PtrAS1Ty));
EXPECT_FALSE(CastInst::isBitCastable(Int32PtrTy, V2Int32PtrTy));
EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrTy, Int32PtrTy));
EXPECT_TRUE(CastInst::isBitCastable(Int32PtrTy, Int64PtrTy));
EXPECT_FALSE(CastInst::isBitCastable(DoubleTy, FloatTy));
EXPECT_FALSE(CastInst::isBitCastable(FloatTy, DoubleTy));
EXPECT_TRUE(CastInst::isBitCastable(FloatTy, FloatTy));
EXPECT_TRUE(CastInst::isBitCastable(FloatTy, FloatTy));
EXPECT_TRUE(CastInst::isBitCastable(FloatTy, Int32Ty));
EXPECT_TRUE(CastInst::isBitCastable(Int16Ty, HalfTy));
EXPECT_TRUE(CastInst::isBitCastable(Int32Ty, FloatTy));
EXPECT_TRUE(CastInst::isBitCastable(V2Int32Ty, Int64Ty));
EXPECT_TRUE(CastInst::isBitCastable(V2Int32Ty, V4Int16Ty));
EXPECT_FALSE(CastInst::isBitCastable(Int32Ty, Int64Ty));
EXPECT_FALSE(CastInst::isBitCastable(Int64Ty, Int32Ty));
EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrTy, Int64Ty));
EXPECT_FALSE(CastInst::isBitCastable(Int64Ty, V2Int32PtrTy));
EXPECT_TRUE(CastInst::isBitCastable(V2Int64PtrTy, V2Int32PtrTy));
EXPECT_TRUE(CastInst::isBitCastable(V2Int32PtrTy, V2Int64PtrTy));
EXPECT_FALSE(CastInst::isBitCastable(V2Int32Ty, V2Int64Ty));
EXPECT_FALSE(CastInst::isBitCastable(V2Int64Ty, V2Int32Ty));
EXPECT_FALSE(CastInst::castIsValid(Instruction::BitCast,
Constant::getNullValue(V4Int32PtrTy),
V2Int32PtrTy));
EXPECT_FALSE(CastInst::castIsValid(Instruction::BitCast,
Constant::getNullValue(V2Int32PtrTy),
V4Int32PtrTy));
EXPECT_FALSE(CastInst::castIsValid(Instruction::AddrSpaceCast,
Constant::getNullValue(V4Int32PtrAS1Ty),
V2Int32PtrTy));
EXPECT_FALSE(CastInst::castIsValid(Instruction::AddrSpaceCast,
Constant::getNullValue(V2Int32PtrTy),
V4Int32PtrAS1Ty));
// Check that assertion is not hit when creating a cast with a vector of
// pointers
// First form
BasicBlock *BB = BasicBlock::Create(C);
Constant *NullV2I32Ptr = Constant::getNullValue(V2Int32PtrTy);
auto Inst1 = CastInst::CreatePointerCast(NullV2I32Ptr, V2Int32Ty, "foo", BB);
// Second form
auto Inst2 = CastInst::CreatePointerCast(NullV2I32Ptr, V2Int32Ty);
delete Inst2;
Inst1->eraseFromParent();
delete BB;
}
TEST(InstructionsTest, VectorGep) {
LLVMContext C;
// Type Definitions
Type *I8Ty = IntegerType::get(C, 8);
Type *I32Ty = IntegerType::get(C, 32);
PointerType *Ptri8Ty = PointerType::get(I8Ty, 0);
PointerType *Ptri32Ty = PointerType::get(I32Ty, 0);
VectorType *V2xi8PTy = VectorType::get(Ptri8Ty, 2);
VectorType *V2xi32PTy = VectorType::get(Ptri32Ty, 2);
// Test different aspects of the vector-of-pointers type
// and GEPs which use this type.
ConstantInt *Ci32a = ConstantInt::get(C, APInt(32, 1492));
ConstantInt *Ci32b = ConstantInt::get(C, APInt(32, 1948));
std::vector<Constant*> ConstVa(2, Ci32a);
std::vector<Constant*> ConstVb(2, Ci32b);
Constant *C2xi32a = ConstantVector::get(ConstVa);
Constant *C2xi32b = ConstantVector::get(ConstVb);
CastInst *PtrVecA = new IntToPtrInst(C2xi32a, V2xi32PTy);
CastInst *PtrVecB = new IntToPtrInst(C2xi32b, V2xi32PTy);
ICmpInst *ICmp0 = new ICmpInst(ICmpInst::ICMP_SGT, PtrVecA, PtrVecB);
ICmpInst *ICmp1 = new ICmpInst(ICmpInst::ICMP_ULT, PtrVecA, PtrVecB);
EXPECT_NE(ICmp0, ICmp1); // suppress warning.
BasicBlock* BB0 = BasicBlock::Create(C);
// Test InsertAtEnd ICmpInst constructor.
ICmpInst *ICmp2 = new ICmpInst(*BB0, ICmpInst::ICMP_SGE, PtrVecA, PtrVecB);
EXPECT_NE(ICmp0, ICmp2); // suppress warning.
GetElementPtrInst *Gep0 = GetElementPtrInst::Create(I32Ty, PtrVecA, C2xi32a);
GetElementPtrInst *Gep1 = GetElementPtrInst::Create(I32Ty, PtrVecA, C2xi32b);
GetElementPtrInst *Gep2 = GetElementPtrInst::Create(I32Ty, PtrVecB, C2xi32a);
GetElementPtrInst *Gep3 = GetElementPtrInst::Create(I32Ty, PtrVecB, C2xi32b);
CastInst *BTC0 = new BitCastInst(Gep0, V2xi8PTy);
CastInst *BTC1 = new BitCastInst(Gep1, V2xi8PTy);
CastInst *BTC2 = new BitCastInst(Gep2, V2xi8PTy);
CastInst *BTC3 = new BitCastInst(Gep3, V2xi8PTy);
Value *S0 = BTC0->stripPointerCasts();
Value *S1 = BTC1->stripPointerCasts();
Value *S2 = BTC2->stripPointerCasts();
Value *S3 = BTC3->stripPointerCasts();
EXPECT_NE(S0, Gep0);
EXPECT_NE(S1, Gep1);
EXPECT_NE(S2, Gep2);
EXPECT_NE(S3, Gep3);
int64_t Offset;
DataLayout TD("e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f3"
"2:32:32-f64:64:64-v64:64:64-v128:128:128-a:0:64-s:64:64-f80"
":128:128-n8:16:32:64-S128");
// Make sure we don't crash
GetPointerBaseWithConstantOffset(Gep0, Offset, TD);
GetPointerBaseWithConstantOffset(Gep1, Offset, TD);
GetPointerBaseWithConstantOffset(Gep2, Offset, TD);
GetPointerBaseWithConstantOffset(Gep3, Offset, TD);
// Gep of Geps
GetElementPtrInst *GepII0 = GetElementPtrInst::Create(I32Ty, Gep0, C2xi32b);
GetElementPtrInst *GepII1 = GetElementPtrInst::Create(I32Ty, Gep1, C2xi32a);
GetElementPtrInst *GepII2 = GetElementPtrInst::Create(I32Ty, Gep2, C2xi32b);
GetElementPtrInst *GepII3 = GetElementPtrInst::Create(I32Ty, Gep3, C2xi32a);
EXPECT_EQ(GepII0->getNumIndices(), 1u);
EXPECT_EQ(GepII1->getNumIndices(), 1u);
EXPECT_EQ(GepII2->getNumIndices(), 1u);
EXPECT_EQ(GepII3->getNumIndices(), 1u);
EXPECT_FALSE(GepII0->hasAllZeroIndices());
EXPECT_FALSE(GepII1->hasAllZeroIndices());
EXPECT_FALSE(GepII2->hasAllZeroIndices());
EXPECT_FALSE(GepII3->hasAllZeroIndices());
delete GepII0;
delete GepII1;
delete GepII2;
delete GepII3;
delete BTC0;
delete BTC1;
delete BTC2;
delete BTC3;
delete Gep0;
delete Gep1;
delete Gep2;
delete Gep3;
ICmp2->eraseFromParent();
delete BB0;
delete ICmp0;
delete ICmp1;
delete PtrVecA;
delete PtrVecB;
}
TEST(InstructionsTest, FPMathOperator) {
LLVMContext Context;
IRBuilder<> Builder(Context);
MDBuilder MDHelper(Context);
Instruction *I = Builder.CreatePHI(Builder.getDoubleTy(), 0);
MDNode *MD1 = MDHelper.createFPMath(1.0);
Value *V1 = Builder.CreateFAdd(I, I, "", MD1);
EXPECT_TRUE(isa<FPMathOperator>(V1));
FPMathOperator *O1 = cast<FPMathOperator>(V1);
EXPECT_EQ(O1->getFPAccuracy(), 1.0);
V1->deleteValue();
I->deleteValue();
}
TEST(InstructionsTest, isEliminableCastPair) {
LLVMContext C;
Type* Int16Ty = Type::getInt16Ty(C);
Type* Int32Ty = Type::getInt32Ty(C);
Type* Int64Ty = Type::getInt64Ty(C);
Type* Int64PtrTy = Type::getInt64PtrTy(C);
// Source and destination pointers have same size -> bitcast.
EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::PtrToInt,
CastInst::IntToPtr,
Int64PtrTy, Int64Ty, Int64PtrTy,
Int32Ty, nullptr, Int32Ty),
CastInst::BitCast);
// Source and destination have unknown sizes, but the same address space and
// the intermediate int is the maximum pointer size -> bitcast
EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::PtrToInt,
CastInst::IntToPtr,
Int64PtrTy, Int64Ty, Int64PtrTy,
nullptr, nullptr, nullptr),
CastInst::BitCast);
// Source and destination have unknown sizes, but the same address space and
// the intermediate int is not the maximum pointer size -> nothing
EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::PtrToInt,
CastInst::IntToPtr,
Int64PtrTy, Int32Ty, Int64PtrTy,
nullptr, nullptr, nullptr),
0U);
// Middle pointer big enough -> bitcast.
EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::IntToPtr,
CastInst::PtrToInt,
Int64Ty, Int64PtrTy, Int64Ty,
nullptr, Int64Ty, nullptr),
CastInst::BitCast);
// Middle pointer too small -> fail.
EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::IntToPtr,
CastInst::PtrToInt,
Int64Ty, Int64PtrTy, Int64Ty,
nullptr, Int32Ty, nullptr),
0U);
// Test that we don't eliminate bitcasts between different address spaces,
// or if we don't have available pointer size information.
DataLayout DL("e-p:32:32:32-p1:16:16:16-p2:64:64:64-i1:8:8-i8:8:8-i16:16:16"
"-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64"
"-v128:128:128-a:0:64-s:64:64-f80:128:128-n8:16:32:64-S128");
Type* Int64PtrTyAS1 = Type::getInt64PtrTy(C, 1);
Type* Int64PtrTyAS2 = Type::getInt64PtrTy(C, 2);
IntegerType *Int16SizePtr = DL.getIntPtrType(C, 1);
IntegerType *Int64SizePtr = DL.getIntPtrType(C, 2);
// Cannot simplify inttoptr, addrspacecast
EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::IntToPtr,
CastInst::AddrSpaceCast,
Int16Ty, Int64PtrTyAS1, Int64PtrTyAS2,
nullptr, Int16SizePtr, Int64SizePtr),
0U);
// Cannot simplify addrspacecast, ptrtoint
EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::AddrSpaceCast,
CastInst::PtrToInt,
Int64PtrTyAS1, Int64PtrTyAS2, Int16Ty,
Int64SizePtr, Int16SizePtr, nullptr),
0U);
// Pass since the bitcast address spaces are the same
EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::IntToPtr,
CastInst::BitCast,
Int16Ty, Int64PtrTyAS1, Int64PtrTyAS1,
nullptr, nullptr, nullptr),
CastInst::IntToPtr);
}
TEST(InstructionsTest, CloneCall) {
LLVMContext C;
Type *Int32Ty = Type::getInt32Ty(C);
Type *ArgTys[] = {Int32Ty, Int32Ty, Int32Ty};
FunctionType *FnTy = FunctionType::get(Int32Ty, ArgTys, /*isVarArg=*/false);
Value *Callee = Constant::getNullValue(FnTy->getPointerTo());
Value *Args[] = {
ConstantInt::get(Int32Ty, 1),
ConstantInt::get(Int32Ty, 2),
ConstantInt::get(Int32Ty, 3)
};
std::unique_ptr<CallInst> Call(
CallInst::Create(FnTy, Callee, Args, "result"));
// Test cloning the tail call kind.
CallInst::TailCallKind Kinds[] = {CallInst::TCK_None, CallInst::TCK_Tail,
CallInst::TCK_MustTail};
for (CallInst::TailCallKind TCK : Kinds) {
Call->setTailCallKind(TCK);
std::unique_ptr<CallInst> Clone(cast<CallInst>(Call->clone()));
EXPECT_EQ(Call->getTailCallKind(), Clone->getTailCallKind());
}
Call->setTailCallKind(CallInst::TCK_None);
// Test cloning an attribute.
{
AttrBuilder AB;
AB.addAttribute(Attribute::ReadOnly);
Call->setAttributes(
AttributeList::get(C, AttributeList::FunctionIndex, AB));
std::unique_ptr<CallInst> Clone(cast<CallInst>(Call->clone()));
EXPECT_TRUE(Clone->onlyReadsMemory());
}
}
TEST(InstructionsTest, AlterCallBundles) {
LLVMContext C;
Type *Int32Ty = Type::getInt32Ty(C);
FunctionType *FnTy = FunctionType::get(Int32Ty, Int32Ty, /*isVarArg=*/false);
Value *Callee = Constant::getNullValue(FnTy->getPointerTo());
Value *Args[] = {ConstantInt::get(Int32Ty, 42)};
OperandBundleDef OldBundle("before", UndefValue::get(Int32Ty));
std::unique_ptr<CallInst> Call(
CallInst::Create(FnTy, Callee, Args, OldBundle, "result"));
Call->setTailCallKind(CallInst::TailCallKind::TCK_NoTail);
AttrBuilder AB;
AB.addAttribute(Attribute::Cold);
Call->setAttributes(AttributeList::get(C, AttributeList::FunctionIndex, AB));
Call->setDebugLoc(DebugLoc(MDNode::get(C, None)));
OperandBundleDef NewBundle("after", ConstantInt::get(Int32Ty, 7));
std::unique_ptr<CallInst> Clone(CallInst::Create(Call.get(), NewBundle));
EXPECT_EQ(Call->getNumArgOperands(), Clone->getNumArgOperands());
EXPECT_EQ(Call->getArgOperand(0), Clone->getArgOperand(0));
EXPECT_EQ(Call->getCallingConv(), Clone->getCallingConv());
EXPECT_EQ(Call->getTailCallKind(), Clone->getTailCallKind());
EXPECT_TRUE(Clone->hasFnAttr(Attribute::AttrKind::Cold));
EXPECT_EQ(Call->getDebugLoc(), Clone->getDebugLoc());
EXPECT_EQ(Clone->getNumOperandBundles(), 1U);
EXPECT_TRUE(Clone->getOperandBundle("after").hasValue());
}
TEST(InstructionsTest, AlterInvokeBundles) {
LLVMContext C;
Type *Int32Ty = Type::getInt32Ty(C);
FunctionType *FnTy = FunctionType::get(Int32Ty, Int32Ty, /*isVarArg=*/false);
Value *Callee = Constant::getNullValue(FnTy->getPointerTo());
Value *Args[] = {ConstantInt::get(Int32Ty, 42)};
std::unique_ptr<BasicBlock> NormalDest(BasicBlock::Create(C));
std::unique_ptr<BasicBlock> UnwindDest(BasicBlock::Create(C));
OperandBundleDef OldBundle("before", UndefValue::get(Int32Ty));
std::unique_ptr<InvokeInst> Invoke(
InvokeInst::Create(FnTy, Callee, NormalDest.get(), UnwindDest.get(), Args,
OldBundle, "result"));
AttrBuilder AB;
AB.addAttribute(Attribute::Cold);
Invoke->setAttributes(
AttributeList::get(C, AttributeList::FunctionIndex, AB));
Invoke->setDebugLoc(DebugLoc(MDNode::get(C, None)));
OperandBundleDef NewBundle("after", ConstantInt::get(Int32Ty, 7));
std::unique_ptr<InvokeInst> Clone(
InvokeInst::Create(Invoke.get(), NewBundle));
EXPECT_EQ(Invoke->getNormalDest(), Clone->getNormalDest());
EXPECT_EQ(Invoke->getUnwindDest(), Clone->getUnwindDest());
EXPECT_EQ(Invoke->getNumArgOperands(), Clone->getNumArgOperands());
EXPECT_EQ(Invoke->getArgOperand(0), Clone->getArgOperand(0));
EXPECT_EQ(Invoke->getCallingConv(), Clone->getCallingConv());
EXPECT_TRUE(Clone->hasFnAttr(Attribute::AttrKind::Cold));
EXPECT_EQ(Invoke->getDebugLoc(), Clone->getDebugLoc());
EXPECT_EQ(Clone->getNumOperandBundles(), 1U);
EXPECT_TRUE(Clone->getOperandBundle("after").hasValue());
}
TEST_F(ModuleWithFunctionTest, DropPoisonGeneratingFlags) {
auto *OnlyBB = BasicBlock::Create(Ctx, "bb", F);
auto *Arg0 = &*F->arg_begin();
IRBuilder<NoFolder> B(Ctx);
B.SetInsertPoint(OnlyBB);
{
auto *UI =
cast<Instruction>(B.CreateUDiv(Arg0, Arg0, "", /*isExact*/ true));
ASSERT_TRUE(UI->isExact());
UI->dropPoisonGeneratingFlags();
ASSERT_FALSE(UI->isExact());
}
{
auto *ShrI =
cast<Instruction>(B.CreateLShr(Arg0, Arg0, "", /*isExact*/ true));
ASSERT_TRUE(ShrI->isExact());
ShrI->dropPoisonGeneratingFlags();
ASSERT_FALSE(ShrI->isExact());
}
{
auto *AI = cast<Instruction>(
B.CreateAdd(Arg0, Arg0, "", /*HasNUW*/ true, /*HasNSW*/ false));
ASSERT_TRUE(AI->hasNoUnsignedWrap());
AI->dropPoisonGeneratingFlags();
ASSERT_FALSE(AI->hasNoUnsignedWrap());
ASSERT_FALSE(AI->hasNoSignedWrap());
}
{
auto *SI = cast<Instruction>(
B.CreateAdd(Arg0, Arg0, "", /*HasNUW*/ false, /*HasNSW*/ true));
ASSERT_TRUE(SI->hasNoSignedWrap());
SI->dropPoisonGeneratingFlags();
ASSERT_FALSE(SI->hasNoUnsignedWrap());
ASSERT_FALSE(SI->hasNoSignedWrap());
}
{
auto *ShlI = cast<Instruction>(
B.CreateShl(Arg0, Arg0, "", /*HasNUW*/ true, /*HasNSW*/ true));
ASSERT_TRUE(ShlI->hasNoSignedWrap());
ASSERT_TRUE(ShlI->hasNoUnsignedWrap());
ShlI->dropPoisonGeneratingFlags();
ASSERT_FALSE(ShlI->hasNoUnsignedWrap());
ASSERT_FALSE(ShlI->hasNoSignedWrap());
}
{
Value *GEPBase = Constant::getNullValue(B.getInt8PtrTy());
auto *GI = cast<GetElementPtrInst>(
B.CreateInBoundsGEP(B.getInt8Ty(), GEPBase, Arg0));
ASSERT_TRUE(GI->isInBounds());
GI->dropPoisonGeneratingFlags();
ASSERT_FALSE(GI->isInBounds());
}
}
TEST(InstructionsTest, GEPIndices) {
LLVMContext Context;
IRBuilder<NoFolder> Builder(Context);
Type *ElementTy = Builder.getInt8Ty();
Type *ArrTy = ArrayType::get(ArrayType::get(ElementTy, 64), 64);
Value *Indices[] = {
Builder.getInt32(0),
Builder.getInt32(13),
Builder.getInt32(42) };
Value *V = Builder.CreateGEP(ArrTy, UndefValue::get(PointerType::getUnqual(ArrTy)),
Indices);
ASSERT_TRUE(isa<GetElementPtrInst>(V));
auto *GEPI = cast<GetElementPtrInst>(V);
ASSERT_NE(GEPI->idx_begin(), GEPI->idx_end());
ASSERT_EQ(GEPI->idx_end(), std::next(GEPI->idx_begin(), 3));
EXPECT_EQ(Indices[0], GEPI->idx_begin()[0]);
EXPECT_EQ(Indices[1], GEPI->idx_begin()[1]);
EXPECT_EQ(Indices[2], GEPI->idx_begin()[2]);
EXPECT_EQ(GEPI->idx_begin(), GEPI->indices().begin());
EXPECT_EQ(GEPI->idx_end(), GEPI->indices().end());
const auto *CGEPI = GEPI;
ASSERT_NE(CGEPI->idx_begin(), CGEPI->idx_end());
ASSERT_EQ(CGEPI->idx_end(), std::next(CGEPI->idx_begin(), 3));
EXPECT_EQ(Indices[0], CGEPI->idx_begin()[0]);
EXPECT_EQ(Indices[1], CGEPI->idx_begin()[1]);
EXPECT_EQ(Indices[2], CGEPI->idx_begin()[2]);
EXPECT_EQ(CGEPI->idx_begin(), CGEPI->indices().begin());
EXPECT_EQ(CGEPI->idx_end(), CGEPI->indices().end());
delete GEPI;
}
TEST(InstructionsTest, SwitchInst) {
LLVMContext C;
std::unique_ptr<BasicBlock> BB1, BB2, BB3;
BB1.reset(BasicBlock::Create(C));
BB2.reset(BasicBlock::Create(C));
BB3.reset(BasicBlock::Create(C));
// We create block 0 after the others so that it gets destroyed first and
// clears the uses of the other basic blocks.
std::unique_ptr<BasicBlock> BB0(BasicBlock::Create(C));
auto *Int32Ty = Type::getInt32Ty(C);
SwitchInst *SI =
SwitchInst::Create(UndefValue::get(Int32Ty), BB0.get(), 3, BB0.get());
SI->addCase(ConstantInt::get(Int32Ty, 1), BB1.get());
SI->addCase(ConstantInt::get(Int32Ty, 2), BB2.get());
SI->addCase(ConstantInt::get(Int32Ty, 3), BB3.get());
auto CI = SI->case_begin();
ASSERT_NE(CI, SI->case_end());
EXPECT_EQ(1, CI->getCaseValue()->getSExtValue());
EXPECT_EQ(BB1.get(), CI->getCaseSuccessor());
EXPECT_EQ(2, (CI + 1)->getCaseValue()->getSExtValue());
EXPECT_EQ(BB2.get(), (CI + 1)->getCaseSuccessor());
EXPECT_EQ(3, (CI + 2)->getCaseValue()->getSExtValue());
EXPECT_EQ(BB3.get(), (CI + 2)->getCaseSuccessor());
EXPECT_EQ(CI + 1, std::next(CI));
EXPECT_EQ(CI + 2, std::next(CI, 2));
EXPECT_EQ(CI + 3, std::next(CI, 3));
EXPECT_EQ(SI->case_end(), CI + 3);
EXPECT_EQ(0, CI - CI);
EXPECT_EQ(1, (CI + 1) - CI);
EXPECT_EQ(2, (CI + 2) - CI);
EXPECT_EQ(3, SI->case_end() - CI);
EXPECT_EQ(3, std::distance(CI, SI->case_end()));
auto CCI = const_cast<const SwitchInst *>(SI)->case_begin();
SwitchInst::ConstCaseIt CCE = SI->case_end();
ASSERT_NE(CCI, SI->case_end());
EXPECT_EQ(1, CCI->getCaseValue()->getSExtValue());
EXPECT_EQ(BB1.get(), CCI->getCaseSuccessor());
EXPECT_EQ(2, (CCI + 1)->getCaseValue()->getSExtValue());
EXPECT_EQ(BB2.get(), (CCI + 1)->getCaseSuccessor());
EXPECT_EQ(3, (CCI + 2)->getCaseValue()->getSExtValue());
EXPECT_EQ(BB3.get(), (CCI + 2)->getCaseSuccessor());
EXPECT_EQ(CCI + 1, std::next(CCI));
EXPECT_EQ(CCI + 2, std::next(CCI, 2));
EXPECT_EQ(CCI + 3, std::next(CCI, 3));
EXPECT_EQ(CCE, CCI + 3);
EXPECT_EQ(0, CCI - CCI);
EXPECT_EQ(1, (CCI + 1) - CCI);
EXPECT_EQ(2, (CCI + 2) - CCI);
EXPECT_EQ(3, CCE - CCI);
EXPECT_EQ(3, std::distance(CCI, CCE));
// Make sure that the const iterator is compatible with a const auto ref.
const auto &Handle = *CCI;
EXPECT_EQ(1, Handle.getCaseValue()->getSExtValue());
EXPECT_EQ(BB1.get(), Handle.getCaseSuccessor());
}
TEST(InstructionsTest, SwitchInstProfUpdateWrapper) {
LLVMContext C;
std::unique_ptr<BasicBlock> BB1, BB2, BB3;
BB1.reset(BasicBlock::Create(C));
BB2.reset(BasicBlock::Create(C));
BB3.reset(BasicBlock::Create(C));
// We create block 0 after the others so that it gets destroyed first and
// clears the uses of the other basic blocks.
std::unique_ptr<BasicBlock> BB0(BasicBlock::Create(C));
auto *Int32Ty = Type::getInt32Ty(C);
SwitchInst *SI =
SwitchInst::Create(UndefValue::get(Int32Ty), BB0.get(), 4, BB0.get());
SI->addCase(ConstantInt::get(Int32Ty, 1), BB1.get());
SI->addCase(ConstantInt::get(Int32Ty, 2), BB2.get());
SI->setMetadata(LLVMContext::MD_prof,
MDBuilder(C).createBranchWeights({ 9, 1, 22 }));
{
SwitchInstProfUpdateWrapper SIW(*SI);
EXPECT_EQ(*SIW.getSuccessorWeight(0), 9u);
EXPECT_EQ(*SIW.getSuccessorWeight(1), 1u);
EXPECT_EQ(*SIW.getSuccessorWeight(2), 22u);
SIW.setSuccessorWeight(0, 99u);
SIW.setSuccessorWeight(1, 11u);
EXPECT_EQ(*SIW.getSuccessorWeight(0), 99u);
EXPECT_EQ(*SIW.getSuccessorWeight(1), 11u);
EXPECT_EQ(*SIW.getSuccessorWeight(2), 22u);
}
{ // Create another wrapper and check that the data persist.
SwitchInstProfUpdateWrapper SIW(*SI);
EXPECT_EQ(*SIW.getSuccessorWeight(0), 99u);
EXPECT_EQ(*SIW.getSuccessorWeight(1), 11u);
EXPECT_EQ(*SIW.getSuccessorWeight(2), 22u);
}
}
TEST(InstructionsTest, CommuteShuffleMask) {
SmallVector<int, 16> Indices({-1, 0, 7});
ShuffleVectorInst::commuteShuffleMask(Indices, 4);
EXPECT_THAT(Indices, testing::ContainerEq(ArrayRef<int>({-1, 4, 3})));
}
TEST(InstructionsTest, ShuffleMaskQueries) {
// Create the elements for various constant vectors.
LLVMContext Ctx;
Type *Int32Ty = Type::getInt32Ty(Ctx);
Constant *CU = UndefValue::get(Int32Ty);
Constant *C0 = ConstantInt::get(Int32Ty, 0);
Constant *C1 = ConstantInt::get(Int32Ty, 1);
Constant *C2 = ConstantInt::get(Int32Ty, 2);
Constant *C3 = ConstantInt::get(Int32Ty, 3);
Constant *C4 = ConstantInt::get(Int32Ty, 4);
Constant *C5 = ConstantInt::get(Int32Ty, 5);
Constant *C6 = ConstantInt::get(Int32Ty, 6);
Constant *C7 = ConstantInt::get(Int32Ty, 7);
Constant *Identity = ConstantVector::get({C0, CU, C2, C3, C4});
EXPECT_TRUE(ShuffleVectorInst::isIdentityMask(Identity));
EXPECT_FALSE(ShuffleVectorInst::isSelectMask(Identity)); // identity is distinguished from select
EXPECT_FALSE(ShuffleVectorInst::isReverseMask(Identity));
EXPECT_TRUE(ShuffleVectorInst::isSingleSourceMask(Identity)); // identity is always single source
EXPECT_FALSE(ShuffleVectorInst::isZeroEltSplatMask(Identity));
EXPECT_FALSE(ShuffleVectorInst::isTransposeMask(Identity));
Constant *Select = ConstantVector::get({CU, C1, C5});
EXPECT_FALSE(ShuffleVectorInst::isIdentityMask(Select));
EXPECT_TRUE(ShuffleVectorInst::isSelectMask(Select));
EXPECT_FALSE(ShuffleVectorInst::isReverseMask(Select));
EXPECT_FALSE(ShuffleVectorInst::isSingleSourceMask(Select));
EXPECT_FALSE(ShuffleVectorInst::isZeroEltSplatMask(Select));
EXPECT_FALSE(ShuffleVectorInst::isTransposeMask(Select));
Constant *Reverse = ConstantVector::get({C3, C2, C1, CU});
EXPECT_FALSE(ShuffleVectorInst::isIdentityMask(Reverse));
EXPECT_FALSE(ShuffleVectorInst::isSelectMask(Reverse));
EXPECT_TRUE(ShuffleVectorInst::isReverseMask(Reverse));
EXPECT_TRUE(ShuffleVectorInst::isSingleSourceMask(Reverse)); // reverse is always single source
EXPECT_FALSE(ShuffleVectorInst::isZeroEltSplatMask(Reverse));
EXPECT_FALSE(ShuffleVectorInst::isTransposeMask(Reverse));
Constant *SingleSource = ConstantVector::get({C2, C2, C0, CU});
EXPECT_FALSE(ShuffleVectorInst::isIdentityMask(SingleSource));
EXPECT_FALSE(ShuffleVectorInst::isSelectMask(SingleSource));
EXPECT_FALSE(ShuffleVectorInst::isReverseMask(SingleSource));
EXPECT_TRUE(ShuffleVectorInst::isSingleSourceMask(SingleSource));
EXPECT_FALSE(ShuffleVectorInst::isZeroEltSplatMask(SingleSource));
EXPECT_FALSE(ShuffleVectorInst::isTransposeMask(SingleSource));
Constant *ZeroEltSplat = ConstantVector::get({C0, C0, CU, C0});
EXPECT_FALSE(ShuffleVectorInst::isIdentityMask(ZeroEltSplat));
EXPECT_FALSE(ShuffleVectorInst::isSelectMask(ZeroEltSplat));
EXPECT_FALSE(ShuffleVectorInst::isReverseMask(ZeroEltSplat));
EXPECT_TRUE(ShuffleVectorInst::isSingleSourceMask(ZeroEltSplat)); // 0-splat is always single source
EXPECT_TRUE(ShuffleVectorInst::isZeroEltSplatMask(ZeroEltSplat));
EXPECT_FALSE(ShuffleVectorInst::isTransposeMask(ZeroEltSplat));
Constant *Transpose = ConstantVector::get({C0, C4, C2, C6});
EXPECT_FALSE(ShuffleVectorInst::isIdentityMask(Transpose));
EXPECT_FALSE(ShuffleVectorInst::isSelectMask(Transpose));
EXPECT_FALSE(ShuffleVectorInst::isReverseMask(Transpose));
EXPECT_FALSE(ShuffleVectorInst::isSingleSourceMask(Transpose));
EXPECT_FALSE(ShuffleVectorInst::isZeroEltSplatMask(Transpose));
EXPECT_TRUE(ShuffleVectorInst::isTransposeMask(Transpose));
// More tests to make sure the logic is/stays correct...
EXPECT_TRUE(ShuffleVectorInst::isIdentityMask(ConstantVector::get({CU, C1, CU, C3})));
EXPECT_TRUE(ShuffleVectorInst::isIdentityMask(ConstantVector::get({C4, CU, C6, CU})));
EXPECT_TRUE(ShuffleVectorInst::isSelectMask(ConstantVector::get({C4, C1, C6, CU})));
EXPECT_TRUE(ShuffleVectorInst::isSelectMask(ConstantVector::get({CU, C1, C6, C3})));
EXPECT_TRUE(ShuffleVectorInst::isReverseMask(ConstantVector::get({C7, C6, CU, C4})));
EXPECT_TRUE(ShuffleVectorInst::isReverseMask(ConstantVector::get({C3, CU, C1, CU})));
EXPECT_TRUE(ShuffleVectorInst::isSingleSourceMask(ConstantVector::get({C7, C5, CU, C7})));
EXPECT_TRUE(ShuffleVectorInst::isSingleSourceMask(ConstantVector::get({C3, C0, CU, C3})));
EXPECT_TRUE(ShuffleVectorInst::isZeroEltSplatMask(ConstantVector::get({C4, CU, CU, C4})));
EXPECT_TRUE(ShuffleVectorInst::isZeroEltSplatMask(ConstantVector::get({CU, C0, CU, C0})));
EXPECT_TRUE(ShuffleVectorInst::isTransposeMask(ConstantVector::get({C1, C5, C3, C7})));
EXPECT_TRUE(ShuffleVectorInst::isTransposeMask(ConstantVector::get({C1, C3})));
// Nothing special about the values here - just re-using inputs to reduce code.
Constant *V0 = ConstantVector::get({C0, C1, C2, C3});
Constant *V1 = ConstantVector::get({C3, C2, C1, C0});
// Identity with undef elts.
ShuffleVectorInst *Id1 = new ShuffleVectorInst(V0, V1,
ConstantVector::get({C0, C1, CU, CU}));
EXPECT_TRUE(Id1->isIdentity());
EXPECT_FALSE(Id1->isIdentityWithPadding());
EXPECT_FALSE(Id1->isIdentityWithExtract());
EXPECT_FALSE(Id1->isConcat());
delete Id1;
// Result has less elements than operands.
ShuffleVectorInst *Id2 = new ShuffleVectorInst(V0, V1,
ConstantVector::get({C0, C1, C2}));
EXPECT_FALSE(Id2->isIdentity());
EXPECT_FALSE(Id2->isIdentityWithPadding());
EXPECT_TRUE(Id2->isIdentityWithExtract());
EXPECT_FALSE(Id2->isConcat());
delete Id2;
// Result has less elements than operands; choose from Op1.
ShuffleVectorInst *Id3 = new ShuffleVectorInst(V0, V1,
ConstantVector::get({C4, CU, C6}));
EXPECT_FALSE(Id3->isIdentity());
EXPECT_FALSE(Id3->isIdentityWithPadding());
EXPECT_TRUE(Id3->isIdentityWithExtract());
EXPECT_FALSE(Id3->isConcat());
delete Id3;
// Result has less elements than operands; choose from Op0 and Op1 is not identity.
ShuffleVectorInst *Id4 = new ShuffleVectorInst(V0, V1,
ConstantVector::get({C4, C1, C6}));
EXPECT_FALSE(Id4->isIdentity());
EXPECT_FALSE(Id4->isIdentityWithPadding());
EXPECT_FALSE(Id4->isIdentityWithExtract());
EXPECT_FALSE(Id4->isConcat());
delete Id4;
// Result has more elements than operands, and extra elements are undef.
ShuffleVectorInst *Id5 = new ShuffleVectorInst(V0, V1,
ConstantVector::get({CU, C1, C2, C3, CU, CU}));
EXPECT_FALSE(Id5->isIdentity());
EXPECT_TRUE(Id5->isIdentityWithPadding());
EXPECT_FALSE(Id5->isIdentityWithExtract());
EXPECT_FALSE(Id5->isConcat());
delete Id5;
// Result has more elements than operands, and extra elements are undef; choose from Op1.
ShuffleVectorInst *Id6 = new ShuffleVectorInst(V0, V1,
ConstantVector::get({C4, C5, C6, CU, CU, CU}));
EXPECT_FALSE(Id6->isIdentity());
EXPECT_TRUE(Id6->isIdentityWithPadding());
EXPECT_FALSE(Id6->isIdentityWithExtract());
EXPECT_FALSE(Id6->isConcat());
delete Id6;
// Result has more elements than operands, but extra elements are not undef.
ShuffleVectorInst *Id7 = new ShuffleVectorInst(V0, V1,
ConstantVector::get({C0, C1, C2, C3, CU, C1}));
EXPECT_FALSE(Id7->isIdentity());
EXPECT_FALSE(Id7->isIdentityWithPadding());
EXPECT_FALSE(Id7->isIdentityWithExtract());
EXPECT_FALSE(Id7->isConcat());
delete Id7;
// Result has more elements than operands; choose from Op0 and Op1 is not identity.
ShuffleVectorInst *Id8 = new ShuffleVectorInst(V0, V1,
ConstantVector::get({C4, CU, C2, C3, CU, CU}));
EXPECT_FALSE(Id8->isIdentity());
EXPECT_FALSE(Id8->isIdentityWithPadding());
EXPECT_FALSE(Id8->isIdentityWithExtract());
EXPECT_FALSE(Id8->isConcat());
delete Id8;
// Result has twice as many elements as operands; choose consecutively from Op0 and Op1 is concat.
ShuffleVectorInst *Id9 = new ShuffleVectorInst(V0, V1,
ConstantVector::get({C0, CU, C2, C3, CU, CU, C6, C7}));
EXPECT_FALSE(Id9->isIdentity());
EXPECT_FALSE(Id9->isIdentityWithPadding());
EXPECT_FALSE(Id9->isIdentityWithExtract());
EXPECT_TRUE(Id9->isConcat());
delete Id9;
// Result has less than twice as many elements as operands, so not a concat.
ShuffleVectorInst *Id10 = new ShuffleVectorInst(V0, V1,
ConstantVector::get({C0, CU, C2, C3, CU, CU, C6}));
EXPECT_FALSE(Id10->isIdentity());
EXPECT_FALSE(Id10->isIdentityWithPadding());
EXPECT_FALSE(Id10->isIdentityWithExtract());
EXPECT_FALSE(Id10->isConcat());
delete Id10;
// Result has more than twice as many elements as operands, so not a concat.
ShuffleVectorInst *Id11 = new ShuffleVectorInst(V0, V1,
ConstantVector::get({C0, CU, C2, C3, CU, CU, C6, C7, CU}));
EXPECT_FALSE(Id11->isIdentity());
EXPECT_FALSE(Id11->isIdentityWithPadding());
EXPECT_FALSE(Id11->isIdentityWithExtract());
EXPECT_FALSE(Id11->isConcat());
delete Id11;
// If an input is undef, it's not a concat.
// TODO: IdentityWithPadding should be true here even though the high mask values are not undef.
ShuffleVectorInst *Id12 = new ShuffleVectorInst(V0, ConstantVector::get({CU, CU, CU, CU}),
ConstantVector::get({C0, CU, C2, C3, CU, CU, C6, C7}));
EXPECT_FALSE(Id12->isIdentity());
EXPECT_FALSE(Id12->isIdentityWithPadding());
EXPECT_FALSE(Id12->isIdentityWithExtract());
EXPECT_FALSE(Id12->isConcat());
delete Id12;
}
TEST(InstructionsTest, SkipDebug) {
LLVMContext C;
std::unique_ptr<Module> M = parseIR(C,
R"(
declare void @llvm.dbg.value(metadata, metadata, metadata)
define void @f() {
entry:
call void @llvm.dbg.value(metadata i32 0, metadata !11, metadata !DIExpression()), !dbg !13
ret void
}
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "t2.c", directory: "foo")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!8 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: false, unit: !0, retainedNodes: !2)
!9 = !DISubroutineType(types: !10)
!10 = !{null}
!11 = !DILocalVariable(name: "x", scope: !8, file: !1, line: 2, type: !12)
!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!13 = !DILocation(line: 2, column: 7, scope: !8)
)");
ASSERT_TRUE(M);
Function *F = cast<Function>(M->getNamedValue("f"));
BasicBlock &BB = F->front();
// The first non-debug instruction is the terminator.
auto *Term = BB.getTerminator();
EXPECT_EQ(Term, BB.begin()->getNextNonDebugInstruction());
EXPECT_EQ(Term->getIterator(), skipDebugIntrinsics(BB.begin()));
// After the terminator, there are no non-debug instructions.
EXPECT_EQ(nullptr, Term->getNextNonDebugInstruction());
}
TEST(InstructionsTest, PhiMightNotBeFPMathOperator) {
LLVMContext Context;
IRBuilder<> Builder(Context);
MDBuilder MDHelper(Context);
Instruction *I = Builder.CreatePHI(Builder.getInt32Ty(), 0);
EXPECT_FALSE(isa<FPMathOperator>(I));
I->deleteValue();
Instruction *FP = Builder.CreatePHI(Builder.getDoubleTy(), 0);
EXPECT_TRUE(isa<FPMathOperator>(FP));
FP->deleteValue();
}
TEST(InstructionsTest, FPCallIsFPMathOperator) {
LLVMContext C;
Type *ITy = Type::getInt32Ty(C);
FunctionType *IFnTy = FunctionType::get(ITy, {});
Value *ICallee = Constant::getNullValue(IFnTy->getPointerTo());
std::unique_ptr<CallInst> ICall(CallInst::Create(IFnTy, ICallee, {}, ""));
EXPECT_FALSE(isa<FPMathOperator>(ICall));
Type *VITy = VectorType::get(ITy, 2);
FunctionType *VIFnTy = FunctionType::get(VITy, {});
Value *VICallee = Constant::getNullValue(VIFnTy->getPointerTo());
std::unique_ptr<CallInst> VICall(CallInst::Create(VIFnTy, VICallee, {}, ""));
EXPECT_FALSE(isa<FPMathOperator>(VICall));
Type *AITy = ArrayType::get(ITy, 2);
FunctionType *AIFnTy = FunctionType::get(AITy, {});
Value *AICallee = Constant::getNullValue(AIFnTy->getPointerTo());
std::unique_ptr<CallInst> AICall(CallInst::Create(AIFnTy, AICallee, {}, ""));
EXPECT_FALSE(isa<FPMathOperator>(AICall));
Type *FTy = Type::getFloatTy(C);
FunctionType *FFnTy = FunctionType::get(FTy, {});
Value *FCallee = Constant::getNullValue(FFnTy->getPointerTo());
std::unique_ptr<CallInst> FCall(CallInst::Create(FFnTy, FCallee, {}, ""));
EXPECT_TRUE(isa<FPMathOperator>(FCall));
Type *VFTy = VectorType::get(FTy, 2);
FunctionType *VFFnTy = FunctionType::get(VFTy, {});
Value *VFCallee = Constant::getNullValue(VFFnTy->getPointerTo());
std::unique_ptr<CallInst> VFCall(CallInst::Create(VFFnTy, VFCallee, {}, ""));
EXPECT_TRUE(isa<FPMathOperator>(VFCall));
Type *AFTy = ArrayType::get(FTy, 2);
FunctionType *AFFnTy = FunctionType::get(AFTy, {});
Value *AFCallee = Constant::getNullValue(AFFnTy->getPointerTo());
std::unique_ptr<CallInst> AFCall(CallInst::Create(AFFnTy, AFCallee, {}, ""));
EXPECT_TRUE(isa<FPMathOperator>(AFCall));
Type *AVFTy = ArrayType::get(VFTy, 2);
FunctionType *AVFFnTy = FunctionType::get(AVFTy, {});
Value *AVFCallee = Constant::getNullValue(AVFFnTy->getPointerTo());
std::unique_ptr<CallInst> AVFCall(
CallInst::Create(AVFFnTy, AVFCallee, {}, ""));
EXPECT_TRUE(isa<FPMathOperator>(AVFCall));
Type *AAVFTy = ArrayType::get(AVFTy, 2);
FunctionType *AAVFFnTy = FunctionType::get(AAVFTy, {});
Value *AAVFCallee = Constant::getNullValue(AAVFFnTy->getPointerTo());
std::unique_ptr<CallInst> AAVFCall(
CallInst::Create(AAVFFnTy, AAVFCallee, {}, ""));
EXPECT_TRUE(isa<FPMathOperator>(AAVFCall));
}
TEST(InstructionsTest, FNegInstruction) {
LLVMContext Context;
Type *FltTy = Type::getFloatTy(Context);
Constant *One = ConstantFP::get(FltTy, 1.0);
BinaryOperator *FAdd = BinaryOperator::CreateFAdd(One, One);
FAdd->setHasNoNaNs(true);
UnaryOperator *FNeg = UnaryOperator::CreateFNegFMF(One, FAdd);
EXPECT_TRUE(FNeg->hasNoNaNs());
EXPECT_FALSE(FNeg->hasNoInfs());
EXPECT_FALSE(FNeg->hasNoSignedZeros());
EXPECT_FALSE(FNeg->hasAllowReciprocal());
EXPECT_FALSE(FNeg->hasAllowContract());
EXPECT_FALSE(FNeg->hasAllowReassoc());
EXPECT_FALSE(FNeg->hasApproxFunc());
FAdd->deleteValue();
FNeg->deleteValue();
}
TEST(InstructionsTest, CallBrInstruction) {
LLVMContext Context;
std::unique_ptr<Module> M = parseIR(Context, R"(
define void @foo() {
entry:
callbr void asm sideeffect "// XXX: ${0:l}", "X"(i8* blockaddress(@foo, %branch_test.exit))
to label %land.rhs.i [label %branch_test.exit]
land.rhs.i:
br label %branch_test.exit
branch_test.exit:
%0 = phi i1 [ true, %entry ], [ false, %land.rhs.i ]
br i1 %0, label %if.end, label %if.then
if.then:
ret void
if.end:
ret void
}
)");
Function *Foo = M->getFunction("foo");
auto BBs = Foo->getBasicBlockList().begin();
CallBrInst &CBI = cast<CallBrInst>(BBs->front());
++BBs;
++BBs;
BasicBlock &BranchTestExit = *BBs;
++BBs;
BasicBlock &IfThen = *BBs;
// Test that setting the first indirect destination of callbr updates the dest
EXPECT_EQ(&BranchTestExit, CBI.getIndirectDest(0));
CBI.setIndirectDest(0, &IfThen);
EXPECT_EQ(&IfThen, CBI.getIndirectDest(0));
// Further, test that changing the indirect destination updates the arg
// operand to use the block address of the new indirect destination basic
// block. This is a critical invariant of CallBrInst.
BlockAddress *IndirectBA = BlockAddress::get(CBI.getIndirectDest(0));
BlockAddress *ArgBA = cast<BlockAddress>(CBI.getArgOperand(0));
EXPECT_EQ(IndirectBA, ArgBA)
<< "After setting the indirect destination, callbr had an indirect "
"destination of '"
<< CBI.getIndirectDest(0)->getName() << "', but a argument of '"
<< ArgBA->getBasicBlock()->getName() << "'. These should always match:\n"
<< CBI;
EXPECT_EQ(IndirectBA->getBasicBlock(), &IfThen);
EXPECT_EQ(ArgBA->getBasicBlock(), &IfThen);
}
TEST(InstructionsTest, UnaryOperator) {
LLVMContext Context;
IRBuilder<> Builder(Context);
Instruction *I = Builder.CreatePHI(Builder.getDoubleTy(), 0);
Value *F = Builder.CreateFNeg(I);
EXPECT_TRUE(isa<Value>(F));
EXPECT_TRUE(isa<Instruction>(F));
EXPECT_TRUE(isa<UnaryInstruction>(F));
EXPECT_TRUE(isa<UnaryOperator>(F));
EXPECT_FALSE(isa<BinaryOperator>(F));
F->deleteValue();
I->deleteValue();
}
} // end anonymous namespace
} // end namespace llvm
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