[Support] Disable SaturatingMultiply() unit test while investigating

[oota-llvm.git] / unittests / Support / BlockFrequencyTest.cpp

diff --git a/unittests/Support/BlockFrequencyTest.cpp b/unittests/Support/BlockFrequencyTest.cpp
index f6e3537de91a979bd9a217aa16011fd7e5c9fdd6..c1f5671815bdfbcbdc80a56bbb0e91fec15f4e6a 100644 (file)
--- a/unittests/Support/BlockFrequencyTest.cpp
+++ b/unittests/Support/BlockFrequencyTest.cpp
@@ -1,3 +1,12 @@
+//===- unittests/Support/BlockFrequencyTest.cpp - BlockFrequency 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/BlockFrequency.h"
 #include "llvm/Support/BranchProbability.h"
 #include "llvm/Support/DataTypes.h"
@@ -10,7 +19,7 @@ namespace {
 
 TEST(BlockFrequencyTest, OneToZero) {
   BlockFrequency Freq(1);
-  BranchProbability Prob(UINT32_MAX - 1, UINT32_MAX);
+  BranchProbability Prob(UINT32_MAX / 3, UINT32_MAX);
   Freq *= Prob;
   EXPECT_EQ(Freq.getFrequency(), 0u);
 
@@ -45,11 +54,11 @@ TEST(BlockFrequencyTest, MaxToHalfMax) {
   BlockFrequency Freq(UINT64_MAX);
   BranchProbability Prob(UINT32_MAX / 2, UINT32_MAX);
   Freq *= Prob;
-  EXPECT_EQ(Freq.getFrequency(), 9223372034707292159ULL);
+  EXPECT_EQ(Freq.getFrequency(), 9223372036854775807ULL);
 
   Freq = BlockFrequency(UINT64_MAX);
   Freq *= Prob;
-  EXPECT_EQ(Freq.getFrequency(), 9223372034707292159ULL);
+  EXPECT_EQ(Freq.getFrequency(), 9223372036854775807ULL);
 }
 
 TEST(BlockFrequencyTest, BigToBig) {
@@ -79,6 +88,12 @@ TEST(BlockFrequencyTest, MaxToMax) {
   EXPECT_EQ(Freq.getFrequency(), UINT64_MAX);
 }
 
+TEST(BlockFrequencyTest, Subtract) {
+  BlockFrequency Freq1(0), Freq2(1);
+  EXPECT_EQ((Freq1 - Freq2).getFrequency(), 0u);
+  EXPECT_EQ((Freq2 - Freq1).getFrequency(), 1u);
+}
+
 TEST(BlockFrequency, Divide) {
   BlockFrequency Freq(0x3333333333333333ULL);
   Freq /= BranchProbability(1, 2);
@@ -88,18 +103,18 @@ TEST(BlockFrequency, Divide) {
 TEST(BlockFrequencyTest, Saturate) {
   BlockFrequency Freq(0x3333333333333333ULL);
   Freq /= BranchProbability(100, 300);
-  EXPECT_EQ(Freq.getFrequency(), 0x9999999999999999ULL);
+  EXPECT_EQ(Freq.getFrequency(), 0x9999999866666668ULL);
   Freq /= BranchProbability(1, 2);
   EXPECT_EQ(Freq.getFrequency(), UINT64_MAX);
 
   Freq = 0x1000000000000000ULL;
-  Freq /= BranchProbability(10000, 160000);
+  Freq /= BranchProbability(10000, 170000);
   EXPECT_EQ(Freq.getFrequency(), UINT64_MAX);
 
   // Try to cheat the multiplication overflow check.
   Freq = 0x00000001f0000001ull;
   Freq /= BranchProbability(1000, 0xf000000f);
-  EXPECT_EQ(33506781356485509ULL, Freq.getFrequency());
+  EXPECT_EQ(33527736066704712ULL, Freq.getFrequency());
 }
 
 TEST(BlockFrequencyTest, SaturatingRightShift) {