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https://github.com/c64scene-ar/llvm-6502.git
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fb3e5ca53b
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64137 91177308-0d34-0410-b5e6-96231b3b80d8
101 lines
3.3 KiB
C++
101 lines
3.3 KiB
C++
//===- llvm/unittest/ADT/APInt.cpp - APInt unit 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 "gtest/gtest.h"
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#include "llvm/ADT/APInt.h"
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using namespace llvm;
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namespace {
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// Test that APInt shift left works when bitwidth > 64 and shiftamt == 0
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TEST(APIntTest, ShiftLeftByZero) {
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APInt One = APInt::getNullValue(65) + 1;
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APInt Shl = One.shl(0);
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EXPECT_EQ(true, Shl[0]);
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EXPECT_EQ(false, Shl[1]);
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}
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TEST(APIntTest, I128NegativeCount) {
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APInt Minus3(128, (uint64_t)-3, true);
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EXPECT_EQ(126u, Minus3.countLeadingOnes());
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EXPECT_EQ(-3, Minus3.getSExtValue());
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APInt Minus1(128, (uint64_t)-1, true);
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EXPECT_EQ(0u, Minus1.countLeadingZeros());
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EXPECT_EQ(128u, Minus1.countLeadingOnes());
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EXPECT_EQ(128u, Minus1.getActiveBits());
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EXPECT_EQ(0u, Minus1.countTrailingZeros());
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EXPECT_EQ(128u, Minus1.countTrailingOnes());
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EXPECT_EQ(128u, Minus1.countPopulation());
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EXPECT_EQ(-1, Minus1.getSExtValue());
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}
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TEST(APIntTest, I33Count) {
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APInt i33minus2(33, -2, true);
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EXPECT_EQ(0u, i33minus2.countLeadingZeros());
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EXPECT_EQ(32u, i33minus2.countLeadingOnes());
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EXPECT_EQ(33u, i33minus2.getActiveBits());
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EXPECT_EQ(1u, i33minus2.countTrailingZeros());
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EXPECT_EQ(32u, i33minus2.countPopulation());
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EXPECT_EQ(-2, i33minus2.getSExtValue());
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EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue());
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}
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TEST(APIntTest, I65Count) {
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APInt i65minus(65, 0, true);
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i65minus.set(64);
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EXPECT_EQ(0u, i65minus.countLeadingZeros());
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EXPECT_EQ(1u, i65minus.countLeadingOnes());
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EXPECT_EQ(65u, i65minus.getActiveBits());
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EXPECT_EQ(64u, i65minus.countTrailingZeros());
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EXPECT_EQ(1u, i65minus.countPopulation());
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}
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TEST(APIntTest, I128PositiveCount) {
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APInt u128max = APInt::getAllOnesValue(128);
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EXPECT_EQ(128u, u128max.countLeadingOnes());
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EXPECT_EQ(0u, u128max.countLeadingZeros());
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EXPECT_EQ(128u, u128max.getActiveBits());
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EXPECT_EQ(0u, u128max.countTrailingZeros());
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EXPECT_EQ(128u, u128max.countTrailingOnes());
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EXPECT_EQ(128u, u128max.countPopulation());
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APInt u64max(128, (uint64_t)-1, false);
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EXPECT_EQ(64u, u64max.countLeadingZeros());
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EXPECT_EQ(0u, u64max.countLeadingOnes());
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EXPECT_EQ(64u, u64max.getActiveBits());
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EXPECT_EQ(0u, u64max.countTrailingZeros());
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EXPECT_EQ(64u, u64max.countTrailingOnes());
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EXPECT_EQ(64u, u64max.countPopulation());
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EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue());
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APInt zero(128, 0, true);
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EXPECT_EQ(128u, zero.countLeadingZeros());
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EXPECT_EQ(0u, zero.countLeadingOnes());
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EXPECT_EQ(0u, zero.getActiveBits());
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EXPECT_EQ(128u, zero.countTrailingZeros());
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EXPECT_EQ(0u, zero.countTrailingOnes());
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EXPECT_EQ(0u, zero.countPopulation());
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EXPECT_EQ(0u, zero.getSExtValue());
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EXPECT_EQ(0u, zero.getZExtValue());
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APInt one(128, 1, true);
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EXPECT_EQ(127u, one.countLeadingZeros());
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EXPECT_EQ(0u, one.countLeadingOnes());
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EXPECT_EQ(1u, one.getActiveBits());
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EXPECT_EQ(0u, one.countTrailingZeros());
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EXPECT_EQ(1u, one.countTrailingOnes());
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EXPECT_EQ(1u, one.countPopulation());
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EXPECT_EQ(1, one.getSExtValue());
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EXPECT_EQ(1u, one.getZExtValue());
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}
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}
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