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129 lines
3.0 KiB
C++
129 lines
3.0 KiB
C++
//===- llvm/unittest/VMCore/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/Instructions.h"
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#include "llvm/BasicBlock.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/LLVMContext.h"
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#include "llvm/ADT/STLExtras.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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const 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(r1->getNumOperands(), 1U);
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User::const_op_iterator b(r1->op_begin());
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EXPECT_NE(b, r1->op_end());
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EXPECT_EQ(*b, One);
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EXPECT_EQ(r1->getOperand(0), One);
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++b;
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EXPECT_EQ(b, r1->op_end());
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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(b0->getNumSuccessors(), 1U);
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// check num operands
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EXPECT_EQ(b0->getNumOperands(), 1U);
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EXPECT_NE(b0->op_begin(), b0->op_end());
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EXPECT_EQ(next(b0->op_begin()), b0->op_end());
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EXPECT_EQ(next(b0->op_begin()), b0->op_end());
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const 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(b1->getNumSuccessors(), 2U);
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// check num operands
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EXPECT_EQ(b1->getNumOperands(), 3U);
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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(*b, One);
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EXPECT_EQ(b1->getOperand(0), One);
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EXPECT_EQ(b1->getCondition(), One);
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++b;
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// check ELSE
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EXPECT_EQ(*b, bb1);
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EXPECT_EQ(b1->getOperand(1), bb1);
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EXPECT_EQ(b1->getSuccessor(1), bb1);
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++b;
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// check THEN
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EXPECT_EQ(*b, bb0);
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EXPECT_EQ(b1->getOperand(2), bb0);
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EXPECT_EQ(b1->getSuccessor(0), bb0);
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++b;
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EXPECT_EQ(b, b1->op_end());
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// shrink it
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b1->setUnconditionalDest(bb1);
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// check num operands
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EXPECT_EQ(b1->getNumOperands(), 1U);
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User::const_op_iterator c(b1->op_begin());
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EXPECT_NE(c, b1->op_end());
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// check THEN
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EXPECT_EQ(*c, bb1);
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EXPECT_EQ(b1->getOperand(0), bb1);
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EXPECT_EQ(b1->getSuccessor(0), bb1);
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++c;
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EXPECT_EQ(c, b1->op_end());
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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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} // end anonymous namespace
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} // end namespace llvm
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