1 //===- llvm/unittest/VMCore/InstructionsTest.cpp - Instructions unit tests ===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/Instructions.h"
11 #include "llvm/BasicBlock.h"
12 #include "llvm/DerivedTypes.h"
13 #include "llvm/LLVMContext.h"
14 #include "llvm/ADT/STLExtras.h"
15 #include "gtest/gtest.h"
20 TEST(InstructionsTest, ReturnInst) {
21 LLVMContext &C(getGlobalContext());
24 const ReturnInst* r0 = ReturnInst::Create(C);
25 EXPECT_EQ(r0->getNumOperands(), 0U);
26 EXPECT_EQ(r0->op_begin(), r0->op_end());
28 const IntegerType* Int1 = IntegerType::get(C, 1);
29 Constant* One = ConstantInt::get(Int1, 1, true);
30 const ReturnInst* r1 = ReturnInst::Create(C, One);
31 EXPECT_EQ(r1->getNumOperands(), 1U);
32 User::const_op_iterator b(r1->op_begin());
33 EXPECT_NE(b, r1->op_end());
35 EXPECT_EQ(r1->getOperand(0), One);
37 EXPECT_EQ(b, r1->op_end());
44 TEST(InstructionsTest, BranchInst) {
45 LLVMContext &C(getGlobalContext());
48 BasicBlock* bb0 = BasicBlock::Create(C);
49 BasicBlock* bb1 = BasicBlock::Create(C);
51 // Mandatory BranchInst
52 const BranchInst* b0 = BranchInst::Create(bb0);
54 EXPECT_TRUE(b0->isUnconditional());
55 EXPECT_FALSE(b0->isConditional());
56 EXPECT_EQ(b0->getNumSuccessors(), 1U);
59 EXPECT_EQ(b0->getNumOperands(), 1U);
61 EXPECT_NE(b0->op_begin(), b0->op_end());
62 EXPECT_EQ(llvm::next(b0->op_begin()), b0->op_end());
64 EXPECT_EQ(llvm::next(b0->op_begin()), b0->op_end());
66 const IntegerType* Int1 = IntegerType::get(C, 1);
67 Constant* One = ConstantInt::get(Int1, 1, true);
69 // Conditional BranchInst
70 BranchInst* b1 = BranchInst::Create(bb0, bb1, One);
72 EXPECT_FALSE(b1->isUnconditional());
73 EXPECT_TRUE(b1->isConditional());
74 EXPECT_EQ(b1->getNumSuccessors(), 2U);
77 EXPECT_EQ(b1->getNumOperands(), 3U);
79 User::const_op_iterator b(b1->op_begin());
82 EXPECT_NE(b, b1->op_end());
84 EXPECT_EQ(b1->getOperand(0), One);
85 EXPECT_EQ(b1->getCondition(), One);
90 EXPECT_EQ(b1->getOperand(1), bb1);
91 EXPECT_EQ(b1->getSuccessor(1), bb1);
96 EXPECT_EQ(b1->getOperand(2), bb0);
97 EXPECT_EQ(b1->getSuccessor(0), bb0);
100 EXPECT_EQ(b, b1->op_end());
110 } // end anonymous namespace
111 } // end namespace llvm