unittests/tools/llvm-exegesis/RegisterValueTest.cpp

   1 //===-- RegisterValueTest.cpp -----------------------------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "RegisterValue.h"
  10 #include "gmock/gmock.h"
  11 #include "gtest/gtest.h"
  12
  13 namespace llvm {
  14 namespace exegesis {
  15
  16 namespace {
  17
  18 #define CHECK(EXPECTED, ACTUAL)                                                \
  19   EXPECT_EQ(llvm::APInt(SizeInBits, EXPECTED, 16),                             \
  20             bitcastFloatValue(Semantic, PredefinedValues::ACTUAL))
  21
  22 TEST(RegisterValueTest, Half) {
  23   const size_t SizeInBits = 16;
  24   const auto &Semantic = llvm::APFloatBase::IEEEhalf();
  25   CHECK("0000", POS_ZERO);
  26   CHECK("8000", NEG_ZERO);
  27   CHECK("3C00", ONE);
  28   CHECK("4000", TWO);
  29   CHECK("7C00", INF);
  30   CHECK("7E00", QNAN);
  31   CHECK("7BFF", LARGEST);
  32   CHECK("0400", SMALLEST_NORM);
  33   CHECK("0001", SMALLEST);
  34   CHECK("0001", ULP);
  35   CHECK("3C01", ONE_PLUS_ULP);
  36 }
  37
  38 TEST(RegisterValueTest, Single) {
  39   const size_t SizeInBits = 32;
  40   const auto &Semantic = llvm::APFloatBase::IEEEsingle();
  41   CHECK("00000000", POS_ZERO);
  42   CHECK("80000000", NEG_ZERO);
  43   CHECK("3F800000", ONE);
  44   CHECK("40000000", TWO);
  45   CHECK("7F800000", INF);
  46   CHECK("7FC00000", QNAN);
  47   CHECK("7F7FFFFF", LARGEST);
  48   CHECK("00800000", SMALLEST_NORM);
  49   CHECK("00000001", SMALLEST);
  50   CHECK("00000001", ULP);
  51   CHECK("3F800001", ONE_PLUS_ULP);
  52 }
  53
  54 TEST(RegisterValueTest, Double) {
  55   const size_t SizeInBits = 64;
  56   const auto &Semantic = llvm::APFloatBase::IEEEdouble();
  57   CHECK("0000000000000000", POS_ZERO);
  58   CHECK("8000000000000000", NEG_ZERO);
  59   CHECK("3FF0000000000000", ONE);
  60   CHECK("4000000000000000", TWO);
  61   CHECK("7FF0000000000000", INF);
  62   CHECK("7FF8000000000000", QNAN);
  63   CHECK("7FEFFFFFFFFFFFFF", LARGEST);
  64   CHECK("0010000000000000", SMALLEST_NORM);
  65   CHECK("0000000000000001", SMALLEST);
  66   CHECK("0000000000000001", ULP);
  67   CHECK("3FF0000000000001", ONE_PLUS_ULP);
  68 }
  69
  70 } // namespace
  71 } // namespace exegesis
  72 } // namespace llvm