mirror of
https://github.com/c64scene-ar/llvm-6502.git
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9ee9f1a334
Summary: This patch fixes step D4 of Knuth's division algorithm implementation. Negative sign of the step result was not always detected due to incorrect "borrow" handling. Test Plan: Unit test that reveals the bug included. Reviewers: chandlerc, yaron.keren Reviewed By: yaron.keren Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D9196 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235699 91177308-0d34-0410-b5e6-96231b3b80d8
847 lines
27 KiB
C++
847 lines
27 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 "llvm/ADT/APInt.h"
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#include "llvm/ADT/SmallString.h"
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#include "gtest/gtest.h"
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#include <ostream>
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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_TRUE(Shl[0]);
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EXPECT_FALSE(Shl[1]);
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}
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TEST(APIntTest, i128_NegativeCount) {
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APInt Minus3(128, static_cast<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, static_cast<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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// XFAIL this test on FreeBSD where the system gcc-4.2.1 seems to miscompile it.
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#if defined(__llvm__) || !defined(__FreeBSD__)
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TEST(APIntTest, i33_Count) {
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APInt i33minus2(33, static_cast<uint64_t>(-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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#endif
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TEST(APIntTest, i65_Count) {
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APInt i65(65, 0, true);
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EXPECT_EQ(65u, i65.countLeadingZeros());
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EXPECT_EQ(0u, i65.countLeadingOnes());
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EXPECT_EQ(0u, i65.getActiveBits());
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EXPECT_EQ(1u, i65.getActiveWords());
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EXPECT_EQ(65u, i65.countTrailingZeros());
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EXPECT_EQ(0u, i65.countPopulation());
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APInt i65minus(65, 0, true);
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i65minus.setBit(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, i128_PositiveCount) {
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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, static_cast<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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TEST(APIntTest, i1) {
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const APInt neg_two(1, static_cast<uint64_t>(-2), true);
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const APInt neg_one(1, static_cast<uint64_t>(-1), true);
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const APInt zero(1, 0);
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const APInt one(1, 1);
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const APInt two(1, 2);
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EXPECT_EQ(0, neg_two.getSExtValue());
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EXPECT_EQ(-1, neg_one.getSExtValue());
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EXPECT_EQ(1u, neg_one.getZExtValue());
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EXPECT_EQ(0u, zero.getZExtValue());
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EXPECT_EQ(-1, one.getSExtValue());
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EXPECT_EQ(1u, one.getZExtValue());
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EXPECT_EQ(0u, two.getZExtValue());
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EXPECT_EQ(0, two.getSExtValue());
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// Basic equalities for 1-bit values.
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EXPECT_EQ(zero, two);
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EXPECT_EQ(zero, neg_two);
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EXPECT_EQ(one, neg_one);
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EXPECT_EQ(two, neg_two);
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// Additions.
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EXPECT_EQ(two, one + one);
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EXPECT_EQ(zero, neg_one + one);
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EXPECT_EQ(neg_two, neg_one + neg_one);
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// Subtractions.
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EXPECT_EQ(neg_two, neg_one - one);
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EXPECT_EQ(two, one - neg_one);
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EXPECT_EQ(zero, one - one);
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// Shifts.
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EXPECT_EQ(zero, one << one);
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EXPECT_EQ(one, one << zero);
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EXPECT_EQ(zero, one.shl(1));
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EXPECT_EQ(one, one.shl(0));
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EXPECT_EQ(zero, one.lshr(1));
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EXPECT_EQ(zero, one.ashr(1));
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// Rotates.
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EXPECT_EQ(one, one.rotl(0));
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EXPECT_EQ(one, one.rotl(1));
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EXPECT_EQ(one, one.rotr(0));
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EXPECT_EQ(one, one.rotr(1));
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// Multiplies.
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EXPECT_EQ(neg_one, neg_one * one);
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EXPECT_EQ(neg_one, one * neg_one);
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EXPECT_EQ(one, neg_one * neg_one);
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EXPECT_EQ(one, one * one);
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// Divides.
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EXPECT_EQ(neg_one, one.sdiv(neg_one));
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EXPECT_EQ(neg_one, neg_one.sdiv(one));
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EXPECT_EQ(one, neg_one.sdiv(neg_one));
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EXPECT_EQ(one, one.sdiv(one));
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EXPECT_EQ(neg_one, one.udiv(neg_one));
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EXPECT_EQ(neg_one, neg_one.udiv(one));
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EXPECT_EQ(one, neg_one.udiv(neg_one));
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EXPECT_EQ(one, one.udiv(one));
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// Remainders.
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EXPECT_EQ(zero, neg_one.srem(one));
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EXPECT_EQ(zero, neg_one.urem(one));
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EXPECT_EQ(zero, one.srem(neg_one));
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// sdivrem
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{
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APInt q(8, 0);
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APInt r(8, 0);
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APInt one(8, 1);
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APInt two(8, 2);
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APInt nine(8, 9);
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APInt four(8, 4);
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EXPECT_EQ(nine.srem(two), one);
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EXPECT_EQ(nine.srem(-two), one);
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EXPECT_EQ((-nine).srem(two), -one);
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EXPECT_EQ((-nine).srem(-two), -one);
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APInt::sdivrem(nine, two, q, r);
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EXPECT_EQ(four, q);
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EXPECT_EQ(one, r);
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APInt::sdivrem(-nine, two, q, r);
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EXPECT_EQ(-four, q);
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EXPECT_EQ(-one, r);
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APInt::sdivrem(nine, -two, q, r);
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EXPECT_EQ(-four, q);
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EXPECT_EQ(one, r);
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APInt::sdivrem(-nine, -two, q, r);
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EXPECT_EQ(four, q);
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EXPECT_EQ(-one, r);
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}
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}
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// Tests different div/rem varaints using scheme (a * b + c) / a
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void testDiv(APInt a, APInt b, APInt c) {
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ASSERT_TRUE(a.uge(b)); // Must: a >= b
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ASSERT_TRUE(a.ugt(c)); // Must: a > c
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auto p = a * b + c;
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auto q = p.udiv(a);
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auto r = p.urem(a);
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EXPECT_EQ(b, q);
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EXPECT_EQ(c, r);
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APInt::udivrem(p, a, q, r);
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EXPECT_EQ(b, q);
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EXPECT_EQ(c, r);
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q = p.sdiv(a);
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r = p.srem(a);
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EXPECT_EQ(b, q);
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EXPECT_EQ(c, r);
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APInt::sdivrem(p, a, q, r);
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EXPECT_EQ(b, q);
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EXPECT_EQ(c, r);
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if (b.ugt(c)) { // Test also symmetric case
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q = p.udiv(b);
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r = p.urem(b);
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EXPECT_EQ(a, q);
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EXPECT_EQ(c, r);
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APInt::udivrem(p, b, q, r);
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EXPECT_EQ(a, q);
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EXPECT_EQ(c, r);
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q = p.sdiv(b);
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r = p.srem(b);
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EXPECT_EQ(a, q);
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EXPECT_EQ(c, r);
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APInt::sdivrem(p, b, q, r);
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EXPECT_EQ(a, q);
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EXPECT_EQ(c, r);
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}
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}
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TEST(APIntTest, divrem_big1) {
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// Tests KnuthDiv rare step D6
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testDiv({256, "1ffffffffffffffff", 16},
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{256, "1ffffffffffffffff", 16},
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{256, 0});
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}
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TEST(APIntTest, divrem_big2) {
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// Tests KnuthDiv rare step D6
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testDiv({1024, "112233ceff"
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"cecece000000ffffffffffffffffffff"
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"ffffffffffffffffffffffffffffffff"
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"ffffffffffffffffffffffffffffffff"
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"ffffffffffffffffffffffffffffff33", 16},
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{1024, "111111ffffffffffffffff"
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"ffffffffffffffffffffffffffffffff"
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"fffffffffffffffffffffffffffffccf"
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"ffffffffffffffffffffffffffffff00", 16},
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{1024, 7919});
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}
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TEST(APIntTest, divrem_big3) {
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// Tests KnuthDiv case without shift
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testDiv({256, "80000001ffffffffffffffff", 16},
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{256, "ffffffffffffff0000000", 16},
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{256, 4219});
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}
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TEST(APIntTest, divrem_big4) {
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// Tests heap allocation in divide() enfoced by huge numbers
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testDiv(APInt{4096, 5}.shl(2001),
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APInt{4096, 1}.shl(2000),
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APInt{4096, 4219*13});
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}
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TEST(APIntTest, divrem_big5) {
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// Tests one word divisor case of divide()
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testDiv(APInt{1024, 19}.shl(811),
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APInt{1024, 4356013}, // one word
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APInt{1024, 1});
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}
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TEST(APIntTest, divrem_big6) {
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// Tests some rare "borrow" cases in D4 step
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testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16},
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APInt{512, "10000000000000001000000000000001", 16},
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APInt{512, "10000000000000000000000000000000", 16});
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}
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TEST(APIntTest, divrem_big7) {
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// Yet another test for KnuthDiv rare step D6.
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testDiv({224, "800000008000000200000005", 16},
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{224, "fffffffd", 16},
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{224, "80000000800000010000000f", 16});
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}
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TEST(APIntTest, fromString) {
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EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2));
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EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2));
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EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2));
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EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2));
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EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2));
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EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2));
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EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2));
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EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2));
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EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2));
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EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2));
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EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2));
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EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2));
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EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2));
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EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2));
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EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2));
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EXPECT_EQ(APInt(32, 0), APInt(32, "0", 8));
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EXPECT_EQ(APInt(32, 1), APInt(32, "1", 8));
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EXPECT_EQ(APInt(32, 7), APInt(32, "7", 8));
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EXPECT_EQ(APInt(32, 8), APInt(32, "10", 8));
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EXPECT_EQ(APInt(32, 15), APInt(32, "17", 8));
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EXPECT_EQ(APInt(32, 16), APInt(32, "20", 8));
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EXPECT_EQ(APInt(32, +0), APInt(32, "+0", 8));
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EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8));
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EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8));
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EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8));
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EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8));
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EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8));
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EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8));
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EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8));
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EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8));
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EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8));
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EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8));
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EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8));
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EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10));
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EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10));
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EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10));
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EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10));
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EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10));
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EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10));
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EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10));
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EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10));
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EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10));
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EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10));
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EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10));
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EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10));
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EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16));
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EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16));
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EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16));
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EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16));
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EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16));
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EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16));
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EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16));
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EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16));
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EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16));
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EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16));
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EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16));
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EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16));
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EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36));
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EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36));
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EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36));
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EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36));
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EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36));
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EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36));
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EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36));
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EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36));
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EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36));
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EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36));
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EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36));
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EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36));
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}
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|
TEST(APIntTest, FromArray) {
|
|
EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1)));
|
|
}
|
|
|
|
TEST(APIntTest, StringBitsNeeded2) {
|
|
EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2));
|
|
EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2));
|
|
EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2));
|
|
EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2));
|
|
EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2));
|
|
|
|
EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2));
|
|
EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2));
|
|
EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2));
|
|
EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2));
|
|
EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2));
|
|
|
|
EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2));
|
|
EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2));
|
|
EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2));
|
|
EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2));
|
|
EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2));
|
|
}
|
|
|
|
TEST(APIntTest, StringBitsNeeded8) {
|
|
EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8));
|
|
EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8));
|
|
EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8));
|
|
EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8));
|
|
EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8));
|
|
|
|
EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8));
|
|
EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8));
|
|
EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8));
|
|
EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8));
|
|
EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8));
|
|
|
|
EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8));
|
|
EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8));
|
|
EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8));
|
|
EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8));
|
|
EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8));
|
|
}
|
|
|
|
TEST(APIntTest, StringBitsNeeded10) {
|
|
EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10));
|
|
EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10));
|
|
EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10));
|
|
EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10));
|
|
EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10));
|
|
EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10));
|
|
|
|
EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10));
|
|
EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10));
|
|
EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10));
|
|
EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10));
|
|
EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10));
|
|
|
|
EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10));
|
|
EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10));
|
|
EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10));
|
|
EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10));
|
|
EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10));
|
|
}
|
|
|
|
TEST(APIntTest, StringBitsNeeded16) {
|
|
EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16));
|
|
EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16));
|
|
EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16));
|
|
EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16));
|
|
EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16));
|
|
|
|
EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16));
|
|
EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16));
|
|
EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16));
|
|
EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16));
|
|
EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16));
|
|
|
|
EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16));
|
|
EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16));
|
|
EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16));
|
|
EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16));
|
|
EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16));
|
|
}
|
|
|
|
TEST(APIntTest, toString) {
|
|
SmallString<16> S;
|
|
bool isSigned;
|
|
|
|
APInt(8, 0).toString(S, 2, true, true);
|
|
EXPECT_EQ(S.str().str(), "0b0");
|
|
S.clear();
|
|
APInt(8, 0).toString(S, 8, true, true);
|
|
EXPECT_EQ(S.str().str(), "00");
|
|
S.clear();
|
|
APInt(8, 0).toString(S, 10, true, true);
|
|
EXPECT_EQ(S.str().str(), "0");
|
|
S.clear();
|
|
APInt(8, 0).toString(S, 16, true, true);
|
|
EXPECT_EQ(S.str().str(), "0x0");
|
|
S.clear();
|
|
APInt(8, 0).toString(S, 36, true, false);
|
|
EXPECT_EQ(S.str().str(), "0");
|
|
S.clear();
|
|
|
|
isSigned = false;
|
|
APInt(8, 255, isSigned).toString(S, 2, isSigned, true);
|
|
EXPECT_EQ(S.str().str(), "0b11111111");
|
|
S.clear();
|
|
APInt(8, 255, isSigned).toString(S, 8, isSigned, true);
|
|
EXPECT_EQ(S.str().str(), "0377");
|
|
S.clear();
|
|
APInt(8, 255, isSigned).toString(S, 10, isSigned, true);
|
|
EXPECT_EQ(S.str().str(), "255");
|
|
S.clear();
|
|
APInt(8, 255, isSigned).toString(S, 16, isSigned, true);
|
|
EXPECT_EQ(S.str().str(), "0xFF");
|
|
S.clear();
|
|
APInt(8, 255, isSigned).toString(S, 36, isSigned, false);
|
|
EXPECT_EQ(S.str().str(), "73");
|
|
S.clear();
|
|
|
|
isSigned = true;
|
|
APInt(8, 255, isSigned).toString(S, 2, isSigned, true);
|
|
EXPECT_EQ(S.str().str(), "-0b1");
|
|
S.clear();
|
|
APInt(8, 255, isSigned).toString(S, 8, isSigned, true);
|
|
EXPECT_EQ(S.str().str(), "-01");
|
|
S.clear();
|
|
APInt(8, 255, isSigned).toString(S, 10, isSigned, true);
|
|
EXPECT_EQ(S.str().str(), "-1");
|
|
S.clear();
|
|
APInt(8, 255, isSigned).toString(S, 16, isSigned, true);
|
|
EXPECT_EQ(S.str().str(), "-0x1");
|
|
S.clear();
|
|
APInt(8, 255, isSigned).toString(S, 36, isSigned, false);
|
|
EXPECT_EQ(S.str().str(), "-1");
|
|
S.clear();
|
|
}
|
|
|
|
TEST(APIntTest, Log2) {
|
|
EXPECT_EQ(APInt(15, 7).logBase2(), 2U);
|
|
EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U);
|
|
EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1);
|
|
EXPECT_EQ(APInt(15, 8).logBase2(), 3U);
|
|
EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U);
|
|
EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3);
|
|
EXPECT_EQ(APInt(15, 9).logBase2(), 3U);
|
|
EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U);
|
|
EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1);
|
|
}
|
|
|
|
TEST(APIntTest, magic) {
|
|
EXPECT_EQ(APInt(32, 3).magic().m, APInt(32, "55555556", 16));
|
|
EXPECT_EQ(APInt(32, 3).magic().s, 0U);
|
|
EXPECT_EQ(APInt(32, 5).magic().m, APInt(32, "66666667", 16));
|
|
EXPECT_EQ(APInt(32, 5).magic().s, 1U);
|
|
EXPECT_EQ(APInt(32, 7).magic().m, APInt(32, "92492493", 16));
|
|
EXPECT_EQ(APInt(32, 7).magic().s, 2U);
|
|
}
|
|
|
|
TEST(APIntTest, magicu) {
|
|
EXPECT_EQ(APInt(32, 3).magicu().m, APInt(32, "AAAAAAAB", 16));
|
|
EXPECT_EQ(APInt(32, 3).magicu().s, 1U);
|
|
EXPECT_EQ(APInt(32, 5).magicu().m, APInt(32, "CCCCCCCD", 16));
|
|
EXPECT_EQ(APInt(32, 5).magicu().s, 2U);
|
|
EXPECT_EQ(APInt(32, 7).magicu().m, APInt(32, "24924925", 16));
|
|
EXPECT_EQ(APInt(32, 7).magicu().s, 3U);
|
|
EXPECT_EQ(APInt(64, 25).magicu(1).m, APInt(64, "A3D70A3D70A3D70B", 16));
|
|
EXPECT_EQ(APInt(64, 25).magicu(1).s, 4U);
|
|
}
|
|
|
|
#ifdef GTEST_HAS_DEATH_TEST
|
|
#ifndef NDEBUG
|
|
TEST(APIntTest, StringDeath) {
|
|
EXPECT_DEATH(APInt(0, "", 0), "Bitwidth too small");
|
|
EXPECT_DEATH(APInt(32, "", 0), "Invalid string length");
|
|
EXPECT_DEATH(APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!");
|
|
EXPECT_DEATH(APInt(32, "", 10), "Invalid string length");
|
|
EXPECT_DEATH(APInt(32, "-", 10), "String is only a sign, needs a value.");
|
|
EXPECT_DEATH(APInt(1, "1234", 10), "Insufficient bit width");
|
|
EXPECT_DEATH(APInt(32, "\0", 10), "Invalid string length");
|
|
EXPECT_DEATH(APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string");
|
|
EXPECT_DEATH(APInt(32, "1L", 10), "Invalid character in digit string");
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
TEST(APIntTest, mul_clear) {
|
|
APInt ValA(65, -1ULL);
|
|
APInt ValB(65, 4);
|
|
APInt ValC(65, 0);
|
|
ValC = ValA * ValB;
|
|
ValA *= ValB;
|
|
EXPECT_EQ(ValA.toString(10, false), ValC.toString(10, false));
|
|
}
|
|
|
|
TEST(APIntTest, Rotate) {
|
|
EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0));
|
|
EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1));
|
|
EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2));
|
|
EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4));
|
|
EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8));
|
|
|
|
EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0));
|
|
EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1));
|
|
EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2));
|
|
EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4));
|
|
EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8));
|
|
|
|
EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0));
|
|
EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1));
|
|
EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2));
|
|
EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4));
|
|
EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8));
|
|
|
|
EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0));
|
|
EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1));
|
|
EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2));
|
|
EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4));
|
|
EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8));
|
|
|
|
APInt Big(256, "00004000800000000000000000003fff8000000000000000", 16);
|
|
APInt Rot(256, "3fff80000000000000000000000000000000000040008000", 16);
|
|
EXPECT_EQ(Rot, Big.rotr(144));
|
|
}
|
|
|
|
TEST(APIntTest, Splat) {
|
|
APInt ValA(8, 0x01);
|
|
EXPECT_EQ(ValA, APInt::getSplat(8, ValA));
|
|
EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA));
|
|
|
|
APInt ValB(3, 5);
|
|
EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB));
|
|
EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB));
|
|
}
|
|
|
|
TEST(APIntTest, tcDecrement) {
|
|
// Test single word decrement.
|
|
|
|
// No out borrow.
|
|
{
|
|
integerPart singleWord = ~integerPart(0) << (integerPartWidth - 1);
|
|
integerPart carry = APInt::tcDecrement(&singleWord, 1);
|
|
EXPECT_EQ(carry, integerPart(0));
|
|
EXPECT_EQ(singleWord, ~integerPart(0) >> 1);
|
|
}
|
|
|
|
// With out borrow.
|
|
{
|
|
integerPart singleWord = 0;
|
|
integerPart carry = APInt::tcDecrement(&singleWord, 1);
|
|
EXPECT_EQ(carry, integerPart(1));
|
|
EXPECT_EQ(singleWord, ~integerPart(0));
|
|
}
|
|
|
|
// Test multiword decrement.
|
|
|
|
// No across word borrow, no out borrow.
|
|
{
|
|
integerPart test[4] = {0x1, 0x1, 0x1, 0x1};
|
|
integerPart expected[4] = {0x0, 0x1, 0x1, 0x1};
|
|
APInt::tcDecrement(test, 4);
|
|
EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
|
|
}
|
|
|
|
// 1 across word borrow, no out borrow.
|
|
{
|
|
integerPart test[4] = {0x0, 0xF, 0x1, 0x1};
|
|
integerPart expected[4] = {~integerPart(0), 0xE, 0x1, 0x1};
|
|
integerPart carry = APInt::tcDecrement(test, 4);
|
|
EXPECT_EQ(carry, integerPart(0));
|
|
EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
|
|
}
|
|
|
|
// 2 across word borrow, no out borrow.
|
|
{
|
|
integerPart test[4] = {0x0, 0x0, 0xC, 0x1};
|
|
integerPart expected[4] = {~integerPart(0), ~integerPart(0), 0xB, 0x1};
|
|
integerPart carry = APInt::tcDecrement(test, 4);
|
|
EXPECT_EQ(carry, integerPart(0));
|
|
EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
|
|
}
|
|
|
|
// 3 across word borrow, no out borrow.
|
|
{
|
|
integerPart test[4] = {0x0, 0x0, 0x0, 0x1};
|
|
integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), 0x0};
|
|
integerPart carry = APInt::tcDecrement(test, 4);
|
|
EXPECT_EQ(carry, integerPart(0));
|
|
EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
|
|
}
|
|
|
|
// 3 across word borrow, with out borrow.
|
|
{
|
|
integerPart test[4] = {0x0, 0x0, 0x0, 0x0};
|
|
integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), ~integerPart(0)};
|
|
integerPart carry = APInt::tcDecrement(test, 4);
|
|
EXPECT_EQ(carry, integerPart(1));
|
|
EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0);
|
|
}
|
|
}
|
|
|
|
TEST(APIntTest, arrayAccess) {
|
|
// Single word check.
|
|
uint64_t E1 = 0x2CA7F46BF6569915ULL;
|
|
APInt A1(64, E1);
|
|
for (unsigned i = 0, e = 64; i < e; ++i) {
|
|
EXPECT_EQ(bool(E1 & (1ULL << i)),
|
|
A1[i]);
|
|
}
|
|
|
|
// Multiword check.
|
|
integerPart E2[4] = {
|
|
0xEB6EB136591CBA21ULL,
|
|
0x7B9358BD6A33F10AULL,
|
|
0x7E7FFA5EADD8846ULL,
|
|
0x305F341CA00B613DULL
|
|
};
|
|
APInt A2(integerPartWidth*4, E2);
|
|
for (unsigned i = 0; i < 4; ++i) {
|
|
for (unsigned j = 0; j < integerPartWidth; ++j) {
|
|
EXPECT_EQ(bool(E2[i] & (1ULL << j)),
|
|
A2[i*integerPartWidth + j]);
|
|
}
|
|
}
|
|
}
|
|
|
|
TEST(APIntTest, LargeAPIntConstruction) {
|
|
// Check that we can properly construct very large APInt. It is very
|
|
// unlikely that people will ever do this, but it is a legal input,
|
|
// so we should not crash on it.
|
|
APInt A9(UINT32_MAX, 0);
|
|
EXPECT_FALSE(A9.getBoolValue());
|
|
}
|
|
|
|
TEST(APIntTest, nearestLogBase2) {
|
|
// Single word check.
|
|
|
|
// Test round up.
|
|
uint64_t I1 = 0x1800001;
|
|
APInt A1(64, I1);
|
|
EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2());
|
|
|
|
// Test round down.
|
|
uint64_t I2 = 0x1000011;
|
|
APInt A2(64, I2);
|
|
EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2());
|
|
|
|
// Test ties round up.
|
|
uint64_t I3 = 0x1800000;
|
|
APInt A3(64, I3);
|
|
EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2());
|
|
|
|
// Multiple word check.
|
|
|
|
// Test round up.
|
|
integerPart I4[4] = {0x0, 0xF, 0x18, 0x0};
|
|
APInt A4(integerPartWidth*4, I4);
|
|
EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2());
|
|
|
|
// Test round down.
|
|
integerPart I5[4] = {0x0, 0xF, 0x10, 0x0};
|
|
APInt A5(integerPartWidth*4, I5);
|
|
EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2());
|
|
|
|
// Test ties round up.
|
|
uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18};
|
|
APInt A6(integerPartWidth*4, I6);
|
|
EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2());
|
|
|
|
// Test BitWidth == 1 special cases.
|
|
APInt A7(1, 1);
|
|
EXPECT_EQ(A7.nearestLogBase2(), 0ULL);
|
|
APInt A8(1, 0);
|
|
EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX);
|
|
|
|
// Test the zero case when we have a bit width large enough such
|
|
// that the bit width is larger than UINT32_MAX-1.
|
|
APInt A9(UINT32_MAX, 0);
|
|
EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX);
|
|
}
|
|
|
|
TEST(APIntTest, IsSplat) {
|
|
APInt A(32, 0x01010101);
|
|
EXPECT_FALSE(A.isSplat(1));
|
|
EXPECT_FALSE(A.isSplat(2));
|
|
EXPECT_FALSE(A.isSplat(4));
|
|
EXPECT_TRUE(A.isSplat(8));
|
|
EXPECT_TRUE(A.isSplat(16));
|
|
EXPECT_TRUE(A.isSplat(32));
|
|
|
|
APInt B(24, 0xAAAAAA);
|
|
EXPECT_FALSE(B.isSplat(1));
|
|
EXPECT_TRUE(B.isSplat(2));
|
|
EXPECT_TRUE(B.isSplat(4));
|
|
EXPECT_TRUE(B.isSplat(8));
|
|
EXPECT_TRUE(B.isSplat(24));
|
|
|
|
APInt C(24, 0xABAAAB);
|
|
EXPECT_FALSE(C.isSplat(1));
|
|
EXPECT_FALSE(C.isSplat(2));
|
|
EXPECT_FALSE(C.isSplat(4));
|
|
EXPECT_FALSE(C.isSplat(8));
|
|
EXPECT_TRUE(C.isSplat(24));
|
|
|
|
APInt D(32, 0xABBAABBA);
|
|
EXPECT_FALSE(D.isSplat(1));
|
|
EXPECT_FALSE(D.isSplat(2));
|
|
EXPECT_FALSE(D.isSplat(4));
|
|
EXPECT_FALSE(D.isSplat(8));
|
|
EXPECT_TRUE(D.isSplat(16));
|
|
EXPECT_TRUE(D.isSplat(32));
|
|
|
|
APInt E(32, 0);
|
|
EXPECT_TRUE(E.isSplat(1));
|
|
EXPECT_TRUE(E.isSplat(2));
|
|
EXPECT_TRUE(E.isSplat(4));
|
|
EXPECT_TRUE(E.isSplat(8));
|
|
EXPECT_TRUE(E.isSplat(16));
|
|
EXPECT_TRUE(E.isSplat(32));
|
|
}
|
|
|
|
#if defined(__clang__)
|
|
// Disable the pragma warning from versions of Clang without -Wself-move
|
|
#pragma clang diagnostic push
|
|
#pragma clang diagnostic ignored "-Wunknown-pragmas"
|
|
// Disable the warning that triggers on exactly what is being tested.
|
|
#pragma clang diagnostic push
|
|
#pragma clang diagnostic ignored "-Wself-move"
|
|
#endif
|
|
TEST(APIntTest, SelfMoveAssignment) {
|
|
APInt X(32, 0xdeadbeef);
|
|
X = std::move(X);
|
|
EXPECT_EQ(32u, X.getBitWidth());
|
|
EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue());
|
|
|
|
uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL};
|
|
APInt Y(128, Bits);
|
|
Y = std::move(Y);
|
|
EXPECT_EQ(128u, Y.getBitWidth());
|
|
EXPECT_EQ(~0ULL, Y.getLimitedValue());
|
|
const uint64_t *Raw = Y.getRawData();
|
|
EXPECT_EQ(2u, Y.getNumWords());
|
|
EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]);
|
|
EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]);
|
|
}
|
|
#if defined(__clang__)
|
|
#pragma clang diagnostic pop
|
|
#pragma clang diagnostic pop
|
|
#endif
|
|
}
|