mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 08:23:21 +01:00
101 lines
3.3 KiB
C++
101 lines
3.3 KiB
C++
//===- llvm/unittest/ADT/APInt.cpp - APInt unit tests ---------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "gtest/gtest.h"
|
|
#include "llvm/ADT/APInt.h"
|
|
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
|
|
// Test that APInt shift left works when bitwidth > 64 and shiftamt == 0
|
|
TEST(APIntTest, ShiftLeftByZero) {
|
|
APInt One = APInt::getNullValue(65) + 1;
|
|
APInt Shl = One.shl(0);
|
|
EXPECT_EQ(true, Shl[0]);
|
|
EXPECT_EQ(false, Shl[1]);
|
|
}
|
|
|
|
TEST(APIntTest, I128NegativeCount) {
|
|
APInt Minus3(128, (uint64_t)-3, true);
|
|
EXPECT_EQ(126u, Minus3.countLeadingOnes());
|
|
EXPECT_EQ(-3, Minus3.getSExtValue());
|
|
|
|
APInt Minus1(128, (uint64_t)-1, true);
|
|
EXPECT_EQ(0u, Minus1.countLeadingZeros());
|
|
EXPECT_EQ(128u, Minus1.countLeadingOnes());
|
|
EXPECT_EQ(128u, Minus1.getActiveBits());
|
|
EXPECT_EQ(0u, Minus1.countTrailingZeros());
|
|
EXPECT_EQ(128u, Minus1.countTrailingOnes());
|
|
EXPECT_EQ(128u, Minus1.countPopulation());
|
|
EXPECT_EQ(-1, Minus1.getSExtValue());
|
|
}
|
|
|
|
TEST(APIntTest, I33Count) {
|
|
APInt i33minus2(33, -2, true);
|
|
EXPECT_EQ(0u, i33minus2.countLeadingZeros());
|
|
EXPECT_EQ(32u, i33minus2.countLeadingOnes());
|
|
EXPECT_EQ(33u, i33minus2.getActiveBits());
|
|
EXPECT_EQ(1u, i33minus2.countTrailingZeros());
|
|
EXPECT_EQ(32u, i33minus2.countPopulation());
|
|
EXPECT_EQ(-2, i33minus2.getSExtValue());
|
|
EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue());
|
|
}
|
|
|
|
TEST(APIntTest, I65Count) {
|
|
APInt i65minus(65, 0, true);
|
|
i65minus.set(64);
|
|
EXPECT_EQ(0u, i65minus.countLeadingZeros());
|
|
EXPECT_EQ(1u, i65minus.countLeadingOnes());
|
|
EXPECT_EQ(65u, i65minus.getActiveBits());
|
|
EXPECT_EQ(64u, i65minus.countTrailingZeros());
|
|
EXPECT_EQ(1u, i65minus.countPopulation());
|
|
}
|
|
|
|
TEST(APIntTest, I128PositiveCount) {
|
|
APInt u128max = APInt::getAllOnesValue(128);
|
|
EXPECT_EQ(128u, u128max.countLeadingOnes());
|
|
EXPECT_EQ(0u, u128max.countLeadingZeros());
|
|
EXPECT_EQ(128u, u128max.getActiveBits());
|
|
EXPECT_EQ(0u, u128max.countTrailingZeros());
|
|
EXPECT_EQ(128u, u128max.countTrailingOnes());
|
|
EXPECT_EQ(128u, u128max.countPopulation());
|
|
|
|
APInt u64max(128, (uint64_t)-1, false);
|
|
EXPECT_EQ(64u, u64max.countLeadingZeros());
|
|
EXPECT_EQ(0u, u64max.countLeadingOnes());
|
|
EXPECT_EQ(64u, u64max.getActiveBits());
|
|
EXPECT_EQ(0u, u64max.countTrailingZeros());
|
|
EXPECT_EQ(64u, u64max.countTrailingOnes());
|
|
EXPECT_EQ(64u, u64max.countPopulation());
|
|
EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue());
|
|
|
|
APInt zero(128, 0, true);
|
|
EXPECT_EQ(128u, zero.countLeadingZeros());
|
|
EXPECT_EQ(0u, zero.countLeadingOnes());
|
|
EXPECT_EQ(0u, zero.getActiveBits());
|
|
EXPECT_EQ(128u, zero.countTrailingZeros());
|
|
EXPECT_EQ(0u, zero.countTrailingOnes());
|
|
EXPECT_EQ(0u, zero.countPopulation());
|
|
EXPECT_EQ(0u, zero.getSExtValue());
|
|
EXPECT_EQ(0u, zero.getZExtValue());
|
|
|
|
APInt one(128, 1, true);
|
|
EXPECT_EQ(127u, one.countLeadingZeros());
|
|
EXPECT_EQ(0u, one.countLeadingOnes());
|
|
EXPECT_EQ(1u, one.getActiveBits());
|
|
EXPECT_EQ(0u, one.countTrailingZeros());
|
|
EXPECT_EQ(1u, one.countTrailingOnes());
|
|
EXPECT_EQ(1u, one.countPopulation());
|
|
EXPECT_EQ(1, one.getSExtValue());
|
|
EXPECT_EQ(1u, one.getZExtValue());
|
|
}
|
|
|
|
}
|