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Support: Add unit tests for BranchProbability 

llvm-svn: 207540
This commit is contained in:
Duncan P. N. Exon Smith 2014-04-29 16:12:13 +00:00
parent e872a6eb91
commit cd630f2895
2 changed files with 91 additions and 0 deletions
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90
llvm/unittests/Support/BranchProbabilityTest.cpp Normal file
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@ -0,0 +1,90 @@
//===- unittest/Support/BranchProbabilityTest.cpp - BranchProbability tests -=//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/BranchProbability.h"
#include "llvm/Support/raw_ostream.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace llvm {
void PrintTo(const BranchProbability &P, ::std::ostream *os) {
*os << P.getNumerator() << "/" << P.getDenominator();
}
}
namespace {
typedef BranchProbability BP;
TEST(BranchProbabilityTest, Accessors) {
EXPECT_EQ(1u, BP(1, 7).getNumerator());
EXPECT_EQ(7u, BP(1, 7).getDenominator());
EXPECT_EQ(0u, BP::getZero().getNumerator());
EXPECT_EQ(1u, BP::getZero().getDenominator());
EXPECT_EQ(1u, BP::getOne().getNumerator());
EXPECT_EQ(1u, BP::getOne().getDenominator());
}
TEST(BranchProbabilityTest, Operators) {
EXPECT_TRUE(BP(1, 7) < BP(2, 7));
EXPECT_TRUE(BP(1, 7) < BP(1, 4));
EXPECT_TRUE(BP(5, 7) < BP(3, 4));
EXPECT_FALSE(BP(1, 7) < BP(1, 7));
EXPECT_FALSE(BP(1, 7) < BP(2, 14));
EXPECT_FALSE(BP(4, 7) < BP(1, 2));
EXPECT_FALSE(BP(4, 7) < BP(3, 7));
EXPECT_FALSE(BP(1, 7) > BP(2, 7));
EXPECT_FALSE(BP(1, 7) > BP(1, 4));
EXPECT_FALSE(BP(5, 7) > BP(3, 4));
EXPECT_FALSE(BP(1, 7) > BP(1, 7));
EXPECT_FALSE(BP(1, 7) > BP(2, 14));
EXPECT_TRUE(BP(4, 7) > BP(1, 2));
EXPECT_TRUE(BP(4, 7) > BP(3, 7));
EXPECT_TRUE(BP(1, 7) <= BP(2, 7));
EXPECT_TRUE(BP(1, 7) <= BP(1, 4));
EXPECT_TRUE(BP(5, 7) <= BP(3, 4));
EXPECT_TRUE(BP(1, 7) <= BP(1, 7));
EXPECT_TRUE(BP(1, 7) <= BP(2, 14));
EXPECT_FALSE(BP(4, 7) <= BP(1, 2));
EXPECT_FALSE(BP(4, 7) <= BP(3, 7));
EXPECT_FALSE(BP(1, 7) >= BP(2, 7));
EXPECT_FALSE(BP(1, 7) >= BP(1, 4));
EXPECT_FALSE(BP(5, 7) >= BP(3, 4));
EXPECT_TRUE(BP(1, 7) >= BP(1, 7));
EXPECT_TRUE(BP(1, 7) >= BP(2, 14));
EXPECT_TRUE(BP(4, 7) >= BP(1, 2));
EXPECT_TRUE(BP(4, 7) >= BP(3, 7));
EXPECT_FALSE(BP(1, 7) == BP(2, 7));
EXPECT_FALSE(BP(1, 7) == BP(1, 4));
EXPECT_FALSE(BP(5, 7) == BP(3, 4));
EXPECT_TRUE(BP(1, 7) == BP(1, 7));
EXPECT_TRUE(BP(1, 7) == BP(2, 14));
EXPECT_FALSE(BP(4, 7) == BP(1, 2));
EXPECT_FALSE(BP(4, 7) == BP(3, 7));
EXPECT_TRUE(BP(1, 7) != BP(2, 7));
EXPECT_TRUE(BP(1, 7) != BP(1, 4));
EXPECT_TRUE(BP(5, 7) != BP(3, 4));
EXPECT_FALSE(BP(1, 7) != BP(1, 7));
EXPECT_FALSE(BP(1, 7) != BP(2, 14));
EXPECT_TRUE(BP(4, 7) != BP(1, 2));
EXPECT_TRUE(BP(4, 7) != BP(3, 7));
}
TEST(BranchProbabilityTest, getCompl) {
EXPECT_EQ(BP(5, 7), BP(2, 7).getCompl());
EXPECT_EQ(BP(2, 7), BP(5, 7).getCompl());
EXPECT_EQ(BP::getZero(), BP(7, 7).getCompl());
EXPECT_EQ(BP::getOne(), BP(0, 7).getCompl());
}
}

1
llvm/unittests/Support/CMakeLists.txt
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@ -7,6 +7,7 @@ add_llvm_unittest(SupportTests
AllocatorTest.cpp
ArrayRecyclerTest.cpp
BlockFrequencyTest.cpp
BranchProbabilityTest.cpp
Casting.cpp
CommandLineTest.cpp
CompressionTest.cpp