| //===- llvm/unittest/VMCore/InstructionsTest.cpp - Instructions unit tests ===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/Instructions.h" |
| #include "llvm/BasicBlock.h" |
| #include "llvm/DerivedTypes.h" |
| #include "llvm/LLVMContext.h" |
| #include "llvm/ADT/STLExtras.h" |
| #include "gtest/gtest.h" |
| |
| namespace llvm { |
| namespace { |
| |
| TEST(InstructionsTest, ReturnInst) { |
| LLVMContext &C(getGlobalContext()); |
| |
| // test for PR6589 |
| const ReturnInst* r0 = ReturnInst::Create(C); |
| EXPECT_EQ(r0->getNumOperands(), 0U); |
| EXPECT_EQ(r0->op_begin(), r0->op_end()); |
| |
| const IntegerType* Int1 = IntegerType::get(C, 1); |
| Constant* One = ConstantInt::get(Int1, 1, true); |
| const ReturnInst* r1 = ReturnInst::Create(C, One); |
| EXPECT_EQ(r1->getNumOperands(), 1U); |
| User::const_op_iterator b(r1->op_begin()); |
| EXPECT_NE(b, r1->op_end()); |
| EXPECT_EQ(*b, One); |
| EXPECT_EQ(r1->getOperand(0), One); |
| ++b; |
| EXPECT_EQ(b, r1->op_end()); |
| |
| // clean up |
| delete r0; |
| delete r1; |
| } |
| |
| TEST(InstructionsTest, BranchInst) { |
| LLVMContext &C(getGlobalContext()); |
| |
| // 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(b0->getNumSuccessors(), 1U); |
| |
| // check num operands |
| EXPECT_EQ(b0->getNumOperands(), 1U); |
| |
| EXPECT_NE(b0->op_begin(), b0->op_end()); |
| EXPECT_EQ(llvm::next(b0->op_begin()), b0->op_end()); |
| |
| EXPECT_EQ(llvm::next(b0->op_begin()), b0->op_end()); |
| |
| const 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(b1->getNumSuccessors(), 2U); |
| |
| // check num operands |
| EXPECT_EQ(b1->getNumOperands(), 3U); |
| |
| User::const_op_iterator b(b1->op_begin()); |
| |
| // check COND |
| EXPECT_NE(b, b1->op_end()); |
| EXPECT_EQ(*b, One); |
| EXPECT_EQ(b1->getOperand(0), One); |
| EXPECT_EQ(b1->getCondition(), One); |
| ++b; |
| |
| // check ELSE |
| EXPECT_EQ(*b, bb1); |
| EXPECT_EQ(b1->getOperand(1), bb1); |
| EXPECT_EQ(b1->getSuccessor(1), bb1); |
| ++b; |
| |
| // check THEN |
| EXPECT_EQ(*b, bb0); |
| EXPECT_EQ(b1->getOperand(2), bb0); |
| EXPECT_EQ(b1->getSuccessor(0), bb0); |
| ++b; |
| |
| EXPECT_EQ(b, b1->op_end()); |
| |
| // clean up |
| delete b0; |
| delete b1; |
| |
| delete bb0; |
| delete bb1; |
| } |
| |
| } // end anonymous namespace |
| } // end namespace llvm |