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add BranchInst tests

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98632 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Gabor Greif 2010-03-16 15:26:09 +00:00
parent 642c066906
commit d165e1a711
1 changed files with 71 additions and 0 deletions
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71
unittests/VMCore/InstructionsTest.cpp
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@ -8,6 +8,7 @@
//===----------------------------------------------------------------------===//
#include "llvm/Instructions.h"
#include "llvm/BasicBlock.h"
#include "llvm/DerivedTypes.h"
#include "llvm/LLVMContext.h"
#include "gtest/gtest.h"
@ -20,11 +21,13 @@ TEST(InstructionsTest, ReturnInst) {
// 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);
@ -37,5 +40,73 @@ TEST(InstructionsTest, ReturnInst) {
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);
// check num operands
EXPECT_EQ(b0->getNumOperands(), 1U);
EXPECT_NE(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);
// 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);
++b;
// check ELSE
EXPECT_EQ(*b, bb1);
EXPECT_EQ(b1->getOperand(1), bb1);
++b;
// check THEN
EXPECT_EQ(*b, bb0);
EXPECT_EQ(b1->getOperand(2), bb0);
++b;
EXPECT_EQ(b, b1->op_end());
// shrink it
b1->setUnconditionalDest(bb1);
// check num operands
EXPECT_EQ(b1->getNumOperands(), 1U);
User::const_op_iterator c(b1->op_begin());
EXPECT_NE(c, b1->op_end());
// check THEN
EXPECT_EQ(*c, bb1);
EXPECT_EQ(b1->getOperand(0), bb1);
++c;
EXPECT_EQ(c, b1->op_end());
// clean up
delete b0;
delete b1;
delete bb0;
delete bb1;
}
} // end anonymous namespace
} // end namespace llvm