forked from OSchip/llvm-project
419 lines
15 KiB
C++
419 lines
15 KiB
C++
//===- llvm/unittest/IR/InstructionsTest.cpp - Instructions unit tests ----===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/Instructions.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/Analysis/ValueTracking.h"
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#include "llvm/IR/BasicBlock.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/IRBuilder.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/MDBuilder.h"
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#include "llvm/IR/Operator.h"
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#include "gtest/gtest.h"
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namespace llvm {
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namespace {
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TEST(InstructionsTest, ReturnInst) {
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LLVMContext &C(getGlobalContext());
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// test for PR6589
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const ReturnInst* r0 = ReturnInst::Create(C);
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EXPECT_EQ(r0->getNumOperands(), 0U);
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EXPECT_EQ(r0->op_begin(), r0->op_end());
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IntegerType* Int1 = IntegerType::get(C, 1);
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Constant* One = ConstantInt::get(Int1, 1, true);
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const ReturnInst* r1 = ReturnInst::Create(C, One);
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EXPECT_EQ(1U, r1->getNumOperands());
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User::const_op_iterator b(r1->op_begin());
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EXPECT_NE(r1->op_end(), b);
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EXPECT_EQ(One, *b);
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EXPECT_EQ(One, r1->getOperand(0));
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++b;
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EXPECT_EQ(r1->op_end(), b);
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// clean up
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delete r0;
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delete r1;
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}
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TEST(InstructionsTest, BranchInst) {
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LLVMContext &C(getGlobalContext());
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// Make a BasicBlocks
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BasicBlock* bb0 = BasicBlock::Create(C);
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BasicBlock* bb1 = BasicBlock::Create(C);
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// Mandatory BranchInst
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const BranchInst* b0 = BranchInst::Create(bb0);
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EXPECT_TRUE(b0->isUnconditional());
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EXPECT_FALSE(b0->isConditional());
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EXPECT_EQ(1U, b0->getNumSuccessors());
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// check num operands
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EXPECT_EQ(1U, b0->getNumOperands());
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EXPECT_NE(b0->op_begin(), b0->op_end());
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EXPECT_EQ(b0->op_end(), llvm::next(b0->op_begin()));
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EXPECT_EQ(b0->op_end(), llvm::next(b0->op_begin()));
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IntegerType* Int1 = IntegerType::get(C, 1);
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Constant* One = ConstantInt::get(Int1, 1, true);
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// Conditional BranchInst
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BranchInst* b1 = BranchInst::Create(bb0, bb1, One);
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EXPECT_FALSE(b1->isUnconditional());
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EXPECT_TRUE(b1->isConditional());
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EXPECT_EQ(2U, b1->getNumSuccessors());
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// check num operands
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EXPECT_EQ(3U, b1->getNumOperands());
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User::const_op_iterator b(b1->op_begin());
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// check COND
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EXPECT_NE(b, b1->op_end());
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EXPECT_EQ(One, *b);
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EXPECT_EQ(One, b1->getOperand(0));
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EXPECT_EQ(One, b1->getCondition());
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++b;
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// check ELSE
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EXPECT_EQ(bb1, *b);
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EXPECT_EQ(bb1, b1->getOperand(1));
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EXPECT_EQ(bb1, b1->getSuccessor(1));
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++b;
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// check THEN
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EXPECT_EQ(bb0, *b);
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EXPECT_EQ(bb0, b1->getOperand(2));
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EXPECT_EQ(bb0, b1->getSuccessor(0));
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++b;
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EXPECT_EQ(b1->op_end(), b);
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// clean up
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delete b0;
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delete b1;
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delete bb0;
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delete bb1;
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}
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TEST(InstructionsTest, CastInst) {
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LLVMContext &C(getGlobalContext());
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Type *Int8Ty = Type::getInt8Ty(C);
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Type *Int16Ty = Type::getInt16Ty(C);
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Type *Int32Ty = Type::getInt32Ty(C);
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Type *Int64Ty = Type::getInt64Ty(C);
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Type *V8x8Ty = VectorType::get(Int8Ty, 8);
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Type *V8x64Ty = VectorType::get(Int64Ty, 8);
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Type *X86MMXTy = Type::getX86_MMXTy(C);
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Type *HalfTy = Type::getHalfTy(C);
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Type *FloatTy = Type::getFloatTy(C);
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Type *DoubleTy = Type::getDoubleTy(C);
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Type *V2Int32Ty = VectorType::get(Int32Ty, 2);
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Type *V2Int64Ty = VectorType::get(Int64Ty, 2);
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Type *V4Int16Ty = VectorType::get(Int16Ty, 4);
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Type *Int32PtrTy = PointerType::get(Int32Ty, 0);
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Type *Int64PtrTy = PointerType::get(Int64Ty, 0);
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Type *Int32PtrAS1Ty = PointerType::get(Int32Ty, 1);
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Type *Int64PtrAS1Ty = PointerType::get(Int64Ty, 1);
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Type *V2Int32PtrAS1Ty = VectorType::get(Int32PtrAS1Ty, 2);
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Type *V2Int64PtrAS1Ty = VectorType::get(Int64PtrAS1Ty, 2);
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Type *V4Int32PtrAS1Ty = VectorType::get(Int32PtrAS1Ty, 4);
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Type *V4Int64PtrAS1Ty = VectorType::get(Int64PtrAS1Ty, 4);
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Type *V2Int64PtrTy = VectorType::get(Int64PtrTy, 2);
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Type *V2Int32PtrTy = VectorType::get(Int32PtrTy, 2);
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const Constant* c8 = Constant::getNullValue(V8x8Ty);
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const Constant* c64 = Constant::getNullValue(V8x64Ty);
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const Constant *v2ptr32 = Constant::getNullValue(V2Int32PtrTy);
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EXPECT_TRUE(CastInst::isCastable(V8x8Ty, X86MMXTy));
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EXPECT_TRUE(CastInst::isCastable(X86MMXTy, V8x8Ty));
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EXPECT_FALSE(CastInst::isCastable(Int64Ty, X86MMXTy));
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EXPECT_TRUE(CastInst::isCastable(V8x64Ty, V8x8Ty));
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EXPECT_TRUE(CastInst::isCastable(V8x8Ty, V8x64Ty));
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EXPECT_EQ(CastInst::Trunc, CastInst::getCastOpcode(c64, true, V8x8Ty, true));
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EXPECT_EQ(CastInst::SExt, CastInst::getCastOpcode(c8, true, V8x64Ty, true));
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EXPECT_FALSE(CastInst::isBitCastable(V8x8Ty, X86MMXTy));
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EXPECT_FALSE(CastInst::isBitCastable(X86MMXTy, V8x8Ty));
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EXPECT_FALSE(CastInst::isBitCastable(Int64Ty, X86MMXTy));
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EXPECT_FALSE(CastInst::isBitCastable(V8x64Ty, V8x8Ty));
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EXPECT_FALSE(CastInst::isBitCastable(V8x8Ty, V8x64Ty));
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// Check address space casts are rejected since we don't know the sizes here
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EXPECT_FALSE(CastInst::isBitCastable(Int32PtrTy, Int32PtrAS1Ty));
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EXPECT_FALSE(CastInst::isBitCastable(Int32PtrAS1Ty, Int32PtrTy));
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EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrTy, V2Int32PtrAS1Ty));
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EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V2Int32PtrTy));
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EXPECT_TRUE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V2Int64PtrAS1Ty));
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EXPECT_TRUE(CastInst::isCastable(V2Int32PtrAS1Ty, V2Int32PtrTy));
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EXPECT_EQ(CastInst::AddrSpaceCast, CastInst::getCastOpcode(v2ptr32, true,
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V2Int32PtrAS1Ty,
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true));
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// Test mismatched number of elements for pointers
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EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V4Int64PtrAS1Ty));
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EXPECT_FALSE(CastInst::isBitCastable(V4Int64PtrAS1Ty, V2Int32PtrAS1Ty));
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EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V4Int32PtrAS1Ty));
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EXPECT_FALSE(CastInst::isBitCastable(Int32PtrTy, V2Int32PtrTy));
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EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrTy, Int32PtrTy));
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EXPECT_TRUE(CastInst::isBitCastable(Int32PtrTy, Int64PtrTy));
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EXPECT_FALSE(CastInst::isBitCastable(DoubleTy, FloatTy));
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EXPECT_FALSE(CastInst::isBitCastable(FloatTy, DoubleTy));
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EXPECT_TRUE(CastInst::isBitCastable(FloatTy, FloatTy));
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EXPECT_TRUE(CastInst::isBitCastable(FloatTy, FloatTy));
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EXPECT_TRUE(CastInst::isBitCastable(FloatTy, Int32Ty));
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EXPECT_TRUE(CastInst::isBitCastable(Int16Ty, HalfTy));
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EXPECT_TRUE(CastInst::isBitCastable(Int32Ty, FloatTy));
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EXPECT_TRUE(CastInst::isBitCastable(V2Int32Ty, Int64Ty));
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EXPECT_TRUE(CastInst::isBitCastable(V2Int32Ty, V4Int16Ty));
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EXPECT_FALSE(CastInst::isBitCastable(Int32Ty, Int64Ty));
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EXPECT_FALSE(CastInst::isBitCastable(Int64Ty, Int32Ty));
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EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrTy, Int64Ty));
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EXPECT_FALSE(CastInst::isBitCastable(Int64Ty, V2Int32PtrTy));
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EXPECT_TRUE(CastInst::isBitCastable(V2Int64PtrTy, V2Int32PtrTy));
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EXPECT_TRUE(CastInst::isBitCastable(V2Int32PtrTy, V2Int64PtrTy));
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EXPECT_FALSE(CastInst::isBitCastable(V2Int32Ty, V2Int64Ty));
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EXPECT_FALSE(CastInst::isBitCastable(V2Int64Ty, V2Int32Ty));
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// Check that assertion is not hit when creating a cast with a vector of
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// pointers
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// First form
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BasicBlock *BB = BasicBlock::Create(C);
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Constant *NullV2I32Ptr = Constant::getNullValue(V2Int32PtrTy);
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CastInst::CreatePointerCast(NullV2I32Ptr, V2Int32Ty, "foo", BB);
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// Second form
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CastInst::CreatePointerCast(NullV2I32Ptr, V2Int32Ty);
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}
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TEST(InstructionsTest, VectorGep) {
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LLVMContext &C(getGlobalContext());
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// Type Definitions
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PointerType *Ptri8Ty = PointerType::get(IntegerType::get(C, 8), 0);
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PointerType *Ptri32Ty = PointerType::get(IntegerType::get(C, 32), 0);
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VectorType *V2xi8PTy = VectorType::get(Ptri8Ty, 2);
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VectorType *V2xi32PTy = VectorType::get(Ptri32Ty, 2);
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// Test different aspects of the vector-of-pointers type
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// and GEPs which use this type.
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ConstantInt *Ci32a = ConstantInt::get(C, APInt(32, 1492));
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ConstantInt *Ci32b = ConstantInt::get(C, APInt(32, 1948));
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std::vector<Constant*> ConstVa(2, Ci32a);
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std::vector<Constant*> ConstVb(2, Ci32b);
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Constant *C2xi32a = ConstantVector::get(ConstVa);
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Constant *C2xi32b = ConstantVector::get(ConstVb);
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CastInst *PtrVecA = new IntToPtrInst(C2xi32a, V2xi32PTy);
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CastInst *PtrVecB = new IntToPtrInst(C2xi32b, V2xi32PTy);
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ICmpInst *ICmp0 = new ICmpInst(ICmpInst::ICMP_SGT, PtrVecA, PtrVecB);
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ICmpInst *ICmp1 = new ICmpInst(ICmpInst::ICMP_ULT, PtrVecA, PtrVecB);
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EXPECT_NE(ICmp0, ICmp1); // suppress warning.
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BasicBlock* BB0 = BasicBlock::Create(C);
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// Test InsertAtEnd ICmpInst constructor.
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ICmpInst *ICmp2 = new ICmpInst(*BB0, ICmpInst::ICMP_SGE, PtrVecA, PtrVecB);
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EXPECT_NE(ICmp0, ICmp2); // suppress warning.
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GetElementPtrInst *Gep0 = GetElementPtrInst::Create(PtrVecA, C2xi32a);
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GetElementPtrInst *Gep1 = GetElementPtrInst::Create(PtrVecA, C2xi32b);
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GetElementPtrInst *Gep2 = GetElementPtrInst::Create(PtrVecB, C2xi32a);
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GetElementPtrInst *Gep3 = GetElementPtrInst::Create(PtrVecB, C2xi32b);
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CastInst *BTC0 = new BitCastInst(Gep0, V2xi8PTy);
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CastInst *BTC1 = new BitCastInst(Gep1, V2xi8PTy);
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CastInst *BTC2 = new BitCastInst(Gep2, V2xi8PTy);
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CastInst *BTC3 = new BitCastInst(Gep3, V2xi8PTy);
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Value *S0 = BTC0->stripPointerCasts();
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Value *S1 = BTC1->stripPointerCasts();
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Value *S2 = BTC2->stripPointerCasts();
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Value *S3 = BTC3->stripPointerCasts();
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EXPECT_NE(S0, Gep0);
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EXPECT_NE(S1, Gep1);
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EXPECT_NE(S2, Gep2);
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EXPECT_NE(S3, Gep3);
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int64_t Offset;
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DataLayout TD("e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f3"
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"2:32:32-f64:64:64-v64:64:64-v128:128:128-a:0:64-s:64:64-f80"
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":128:128-n8:16:32:64-S128");
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// Make sure we don't crash
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GetPointerBaseWithConstantOffset(Gep0, Offset, &TD);
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GetPointerBaseWithConstantOffset(Gep1, Offset, &TD);
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GetPointerBaseWithConstantOffset(Gep2, Offset, &TD);
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GetPointerBaseWithConstantOffset(Gep3, Offset, &TD);
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// Gep of Geps
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GetElementPtrInst *GepII0 = GetElementPtrInst::Create(Gep0, C2xi32b);
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GetElementPtrInst *GepII1 = GetElementPtrInst::Create(Gep1, C2xi32a);
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GetElementPtrInst *GepII2 = GetElementPtrInst::Create(Gep2, C2xi32b);
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GetElementPtrInst *GepII3 = GetElementPtrInst::Create(Gep3, C2xi32a);
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EXPECT_EQ(GepII0->getNumIndices(), 1u);
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EXPECT_EQ(GepII1->getNumIndices(), 1u);
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EXPECT_EQ(GepII2->getNumIndices(), 1u);
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EXPECT_EQ(GepII3->getNumIndices(), 1u);
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EXPECT_FALSE(GepII0->hasAllZeroIndices());
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EXPECT_FALSE(GepII1->hasAllZeroIndices());
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EXPECT_FALSE(GepII2->hasAllZeroIndices());
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EXPECT_FALSE(GepII3->hasAllZeroIndices());
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delete GepII0;
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delete GepII1;
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delete GepII2;
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delete GepII3;
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delete BTC0;
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delete BTC1;
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delete BTC2;
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delete BTC3;
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delete Gep0;
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delete Gep1;
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delete Gep2;
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delete Gep3;
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ICmp2->eraseFromParent();
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delete BB0;
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delete ICmp0;
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delete ICmp1;
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delete PtrVecA;
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delete PtrVecB;
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}
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TEST(InstructionsTest, FPMathOperator) {
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LLVMContext &Context = getGlobalContext();
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IRBuilder<> Builder(Context);
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MDBuilder MDHelper(Context);
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Instruction *I = Builder.CreatePHI(Builder.getDoubleTy(), 0);
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MDNode *MD1 = MDHelper.createFPMath(1.0);
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Value *V1 = Builder.CreateFAdd(I, I, "", MD1);
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EXPECT_TRUE(isa<FPMathOperator>(V1));
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FPMathOperator *O1 = cast<FPMathOperator>(V1);
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EXPECT_EQ(O1->getFPAccuracy(), 1.0);
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delete V1;
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delete I;
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}
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TEST(InstructionsTest, isEliminableCastPair) {
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LLVMContext &C(getGlobalContext());
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Type* Int16Ty = Type::getInt16Ty(C);
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Type* Int32Ty = Type::getInt32Ty(C);
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Type* Int64Ty = Type::getInt64Ty(C);
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Type* Int64PtrTy = Type::getInt64PtrTy(C);
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// Source and destination pointers have same size -> bitcast.
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EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::PtrToInt,
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CastInst::IntToPtr,
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Int64PtrTy, Int64Ty, Int64PtrTy,
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Int32Ty, 0, Int32Ty),
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CastInst::BitCast);
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// Source and destination have unknown sizes, but the same address space and
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// the intermediate int is the maximum pointer size -> bitcast
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EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::PtrToInt,
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CastInst::IntToPtr,
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Int64PtrTy, Int64Ty, Int64PtrTy,
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0, 0, 0),
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CastInst::BitCast);
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// Source and destination have unknown sizes, but the same address space and
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// the intermediate int is not the maximum pointer size -> nothing
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EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::PtrToInt,
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CastInst::IntToPtr,
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Int64PtrTy, Int32Ty, Int64PtrTy,
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0, 0, 0),
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0U);
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// Middle pointer big enough -> bitcast.
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EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::IntToPtr,
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CastInst::PtrToInt,
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Int64Ty, Int64PtrTy, Int64Ty,
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0, Int64Ty, 0),
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CastInst::BitCast);
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// Middle pointer too small -> fail.
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EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::IntToPtr,
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CastInst::PtrToInt,
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Int64Ty, Int64PtrTy, Int64Ty,
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0, Int32Ty, 0),
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0U);
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// Test that we don't eliminate bitcasts between different address spaces,
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// or if we don't have available pointer size information.
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DataLayout DL("e-p:32:32:32-p1:16:16:16-p2:64:64:64-i1:8:8-i8:8:8-i16:16:16"
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"-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64"
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"-v128:128:128-a:0:64-s:64:64-f80:128:128-n8:16:32:64-S128");
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Type* Int64PtrTyAS1 = Type::getInt64PtrTy(C, 1);
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Type* Int64PtrTyAS2 = Type::getInt64PtrTy(C, 2);
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IntegerType *Int16SizePtr = DL.getIntPtrType(C, 1);
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IntegerType *Int64SizePtr = DL.getIntPtrType(C, 2);
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// Cannot simplify inttoptr, addrspacecast
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EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::IntToPtr,
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CastInst::AddrSpaceCast,
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Int16Ty, Int64PtrTyAS1, Int64PtrTyAS2,
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0, Int16SizePtr, Int64SizePtr),
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0U);
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// Cannot simplify addrspacecast, ptrtoint
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EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::AddrSpaceCast,
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CastInst::PtrToInt,
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Int64PtrTyAS1, Int64PtrTyAS2, Int16Ty,
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Int64SizePtr, Int16SizePtr, 0),
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0U);
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// Pass since the bitcast address spaces are the same
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EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::IntToPtr,
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CastInst::BitCast,
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Int16Ty, Int64PtrTyAS1, Int64PtrTyAS1,
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0, 0, 0),
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CastInst::IntToPtr);
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}
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} // end anonymous namespace
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} // end namespace llvm
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