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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211336 91177308-0d34-0410-b5e6-96231b3b80d8
84 lines
3.2 KiB
C++
84 lines
3.2 KiB
C++
//===- llvm/unittest/Support/ScaledNumberTest.cpp - ScaledPair 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/Support/ScaledNumber.h"
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#include "llvm/Support/DataTypes.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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using namespace llvm::ScaledNumbers;
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namespace {
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template <class UIntT> struct ScaledPair {
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UIntT D;
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int S;
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ScaledPair(const std::pair<UIntT, int16_t> &F) : D(F.first), S(F.second) {}
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ScaledPair(UIntT D, int S) : D(D), S(S) {}
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bool operator==(const ScaledPair<UIntT> &X) const {
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return D == X.D && S == X.S;
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}
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};
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template <class UIntT>
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bool operator==(const std::pair<UIntT, int16_t> &L,
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const ScaledPair<UIntT> &R) {
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return ScaledPair<UIntT>(L) == R;
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}
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template <class UIntT>
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void PrintTo(const ScaledPair<UIntT> &F, ::std::ostream *os) {
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*os << F.D << "*2^" << F.S;
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}
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typedef ScaledPair<uint32_t> SP32;
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typedef ScaledPair<uint64_t> SP64;
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TEST(ScaledNumberHelpersTest, getRounded) {
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EXPECT_EQ(getRounded<uint32_t>(0, 0, false), SP32(0, 0));
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EXPECT_EQ(getRounded<uint32_t>(0, 0, true), SP32(1, 0));
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EXPECT_EQ(getRounded<uint32_t>(20, 21, true), SP32(21, 21));
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EXPECT_EQ(getRounded<uint32_t>(UINT32_MAX, 0, false), SP32(UINT32_MAX, 0));
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EXPECT_EQ(getRounded<uint32_t>(UINT32_MAX, 0, true), SP32(1 << 31, 1));
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EXPECT_EQ(getRounded<uint64_t>(0, 0, false), SP64(0, 0));
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EXPECT_EQ(getRounded<uint64_t>(0, 0, true), SP64(1, 0));
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EXPECT_EQ(getRounded<uint64_t>(20, 21, true), SP64(21, 21));
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EXPECT_EQ(getRounded<uint64_t>(UINT32_MAX, 0, false), SP64(UINT32_MAX, 0));
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EXPECT_EQ(getRounded<uint64_t>(UINT32_MAX, 0, true),
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SP64(UINT64_C(1) << 32, 0));
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EXPECT_EQ(getRounded<uint64_t>(UINT64_MAX, 0, false), SP64(UINT64_MAX, 0));
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EXPECT_EQ(getRounded<uint64_t>(UINT64_MAX, 0, true),
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SP64(UINT64_C(1) << 63, 1));
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}
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TEST(FloatsTest, getAdjusted) {
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const uint64_t Max32In64 = UINT32_MAX;
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EXPECT_EQ(getAdjusted32(0), SP32(0, 0));
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EXPECT_EQ(getAdjusted32(0, 5), SP32(0, 5));
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EXPECT_EQ(getAdjusted32(UINT32_MAX), SP32(UINT32_MAX, 0));
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EXPECT_EQ(getAdjusted32(Max32In64 << 1), SP32(UINT32_MAX, 1));
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EXPECT_EQ(getAdjusted32(Max32In64 << 1, 1), SP32(UINT32_MAX, 2));
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EXPECT_EQ(getAdjusted32(Max32In64 << 31), SP32(UINT32_MAX, 31));
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EXPECT_EQ(getAdjusted32(Max32In64 << 32), SP32(UINT32_MAX, 32));
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EXPECT_EQ(getAdjusted32(Max32In64 + 1), SP32(1u << 31, 1));
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EXPECT_EQ(getAdjusted32(UINT64_MAX), SP32(1u << 31, 33));
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EXPECT_EQ(getAdjusted64(0), SP64(0, 0));
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EXPECT_EQ(getAdjusted64(0, 5), SP64(0, 5));
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EXPECT_EQ(getAdjusted64(UINT32_MAX), SP64(UINT32_MAX, 0));
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EXPECT_EQ(getAdjusted64(Max32In64 << 1), SP64(Max32In64 << 1, 0));
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EXPECT_EQ(getAdjusted64(Max32In64 << 1, 1), SP64(Max32In64 << 1, 1));
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EXPECT_EQ(getAdjusted64(Max32In64 << 31), SP64(Max32In64 << 31, 0));
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EXPECT_EQ(getAdjusted64(Max32In64 << 32), SP64(Max32In64 << 32, 0));
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EXPECT_EQ(getAdjusted64(Max32In64 + 1), SP64(Max32In64 + 1, 0));
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EXPECT_EQ(getAdjusted64(UINT64_MAX), SP64(UINT64_MAX, 0));
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}
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}
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