[llvm] r207540 - Support: Add unit tests for BranchProbability

[Duncan P. N. Exon Smith]

Author: dexonsmith
Date: Tue Apr 29 11:12:13 2014
New Revision: 207540

URL: http://llvm.org/viewvc/llvm-project?rev=207540&view=rev
Log:
Support: Add unit tests for BranchProbability

Added:
    llvm/trunk/unittests/Support/BranchProbabilityTest.cpp
Modified:
    llvm/trunk/unittests/Support/CMakeLists.txt

Added: llvm/trunk/unittests/Support/BranchProbabilityTest.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/unittests/Support/BranchProbabilityTest.cpp?rev=207540&view=auto
==============================================================================
--- llvm/trunk/unittests/Support/BranchProbabilityTest.cpp (added)
+++ llvm/trunk/unittests/Support/BranchProbabilityTest.cpp Tue Apr 29 11:12:13 2014
@@ -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());
+}
+
+}

Modified: llvm/trunk/unittests/Support/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/unittests/Support/CMakeLists.txt?rev=207540&r1=207539&r2=207540&view=diff
==============================================================================
--- llvm/trunk/unittests/Support/CMakeLists.txt (original)
+++ llvm/trunk/unittests/Support/CMakeLists.txt Tue Apr 29 11:12:13 2014
@@ -7,6 +7,7 @@ add_llvm_unittest(SupportTests
   AllocatorTest.cpp
   ArrayRecyclerTest.cpp
   BlockFrequencyTest.cpp
+  BranchProbabilityTest.cpp
   Casting.cpp
   CommandLineTest.cpp
   CompressionTest.cpp