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7f33c007a0
Add some API to `APSInt` to make it easier to compare with `int64_t`.
- `APSInt::compareValues(APSInt, APSInt)` returns 1, -1 or 0 for
greater, lesser, or equal, doing the right thing for mismatched
"has-sign" and bitwidths. This is just like `isSameValue()` (and is
now the implementation of it).
- `APSInt::get(int64_t)` gets a signed `APSInt`.
- `operator<(int64_t)`, etc., are implemented trivially via `get()`
and `compareValues()`.
- Also added `APSInt::getUnsigned(uint64_t)` to make it easier to test
`compareValues()`.
llvm-svn: 228239
147 lines
5.9 KiB
C++
147 lines
5.9 KiB
C++
//===- llvm/unittest/ADT/APSIntTest.cpp - APSInt 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/APSInt.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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namespace {
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TEST(APSIntTest, MoveTest) {
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APSInt A(32, true);
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EXPECT_TRUE(A.isUnsigned());
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APSInt B(128, false);
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A = B;
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EXPECT_FALSE(A.isUnsigned());
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APSInt C(B);
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EXPECT_FALSE(C.isUnsigned());
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APInt Wide(256, 0);
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const uint64_t *Bits = Wide.getRawData();
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APSInt D(std::move(Wide));
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EXPECT_TRUE(D.isUnsigned());
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EXPECT_EQ(Bits, D.getRawData()); // Verify that "Wide" was really moved.
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A = APSInt(64, true);
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EXPECT_TRUE(A.isUnsigned());
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Wide = APInt(128, 1);
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Bits = Wide.getRawData();
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A = std::move(Wide);
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EXPECT_TRUE(A.isUnsigned());
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EXPECT_EQ(Bits, A.getRawData()); // Verify that "Wide" was really moved.
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}
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TEST(APSIntTest, get) {
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EXPECT_TRUE(APSInt::get(7).isSigned());
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EXPECT_EQ(64u, APSInt::get(7).getBitWidth());
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EXPECT_EQ(7u, APSInt::get(7).getZExtValue());
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EXPECT_EQ(7, APSInt::get(7).getSExtValue());
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EXPECT_TRUE(APSInt::get(-7).isSigned());
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EXPECT_EQ(64u, APSInt::get(-7).getBitWidth());
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EXPECT_EQ(-7, APSInt::get(-7).getSExtValue());
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EXPECT_EQ(UINT64_C(0) - 7, APSInt::get(-7).getZExtValue());
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}
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TEST(APSIntTest, getUnsigned) {
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EXPECT_TRUE(APSInt::getUnsigned(7).isUnsigned());
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EXPECT_EQ(64u, APSInt::getUnsigned(7).getBitWidth());
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EXPECT_EQ(7u, APSInt::getUnsigned(7).getZExtValue());
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EXPECT_EQ(7, APSInt::getUnsigned(7).getSExtValue());
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EXPECT_TRUE(APSInt::getUnsigned(-7).isUnsigned());
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EXPECT_EQ(64u, APSInt::getUnsigned(-7).getBitWidth());
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EXPECT_EQ(-7, APSInt::getUnsigned(-7).getSExtValue());
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EXPECT_EQ(UINT64_C(0) - 7, APSInt::getUnsigned(-7).getZExtValue());
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}
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TEST(APSIntTest, getExtValue) {
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EXPECT_TRUE(APSInt(APInt(3, 7), true).isUnsigned());
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EXPECT_TRUE(APSInt(APInt(3, 7), false).isSigned());
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EXPECT_TRUE(APSInt(APInt(4, 7), true).isUnsigned());
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EXPECT_TRUE(APSInt(APInt(4, 7), false).isSigned());
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EXPECT_TRUE(APSInt(APInt(4, -7), true).isUnsigned());
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EXPECT_TRUE(APSInt(APInt(4, -7), false).isSigned());
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EXPECT_EQ(7, APSInt(APInt(3, 7), true).getExtValue());
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EXPECT_EQ(-1, APSInt(APInt(3, 7), false).getExtValue());
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EXPECT_EQ(7, APSInt(APInt(4, 7), true).getExtValue());
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EXPECT_EQ(7, APSInt(APInt(4, 7), false).getExtValue());
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EXPECT_EQ(9, APSInt(APInt(4, -7), true).getExtValue());
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EXPECT_EQ(-7, APSInt(APInt(4, -7), false).getExtValue());
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}
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TEST(APSIntTest, compareValues) {
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auto U = [](uint64_t V) { return APSInt::getUnsigned(V); };
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auto S = [](int64_t V) { return APSInt::get(V); };
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// Bit-width matches and is-signed.
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EXPECT_TRUE(APSInt::compareValues(S(7), S(8)) < 0);
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EXPECT_TRUE(APSInt::compareValues(S(8), S(7)) > 0);
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EXPECT_TRUE(APSInt::compareValues(S(7), S(7)) == 0);
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EXPECT_TRUE(APSInt::compareValues(S(-7), S(8)) < 0);
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EXPECT_TRUE(APSInt::compareValues(S(8), S(-7)) > 0);
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EXPECT_TRUE(APSInt::compareValues(S(-7), S(-7)) == 0);
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EXPECT_TRUE(APSInt::compareValues(S(-7), S(-8)) > 0);
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EXPECT_TRUE(APSInt::compareValues(S(-8), S(-7)) < 0);
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EXPECT_TRUE(APSInt::compareValues(S(-7), S(-7)) == 0);
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// Bit-width matches and not is-signed.
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EXPECT_TRUE(APSInt::compareValues(U(7), U(8)) < 0);
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EXPECT_TRUE(APSInt::compareValues(U(8), U(7)) > 0);
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EXPECT_TRUE(APSInt::compareValues(U(7), U(7)) == 0);
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// Bit-width matches and mixed signs.
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EXPECT_TRUE(APSInt::compareValues(U(7), S(8)) < 0);
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EXPECT_TRUE(APSInt::compareValues(U(8), S(7)) > 0);
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EXPECT_TRUE(APSInt::compareValues(U(7), S(7)) == 0);
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EXPECT_TRUE(APSInt::compareValues(U(8), S(-7)) > 0);
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// Bit-width mismatch and is-signed.
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EXPECT_TRUE(APSInt::compareValues(S(7).trunc(32), S(8)) < 0);
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EXPECT_TRUE(APSInt::compareValues(S(8).trunc(32), S(7)) > 0);
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EXPECT_TRUE(APSInt::compareValues(S(7).trunc(32), S(7)) == 0);
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EXPECT_TRUE(APSInt::compareValues(S(-7).trunc(32), S(8)) < 0);
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EXPECT_TRUE(APSInt::compareValues(S(8).trunc(32), S(-7)) > 0);
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EXPECT_TRUE(APSInt::compareValues(S(-7).trunc(32), S(-7)) == 0);
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EXPECT_TRUE(APSInt::compareValues(S(-7).trunc(32), S(-8)) > 0);
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EXPECT_TRUE(APSInt::compareValues(S(-8).trunc(32), S(-7)) < 0);
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EXPECT_TRUE(APSInt::compareValues(S(-7).trunc(32), S(-7)) == 0);
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EXPECT_TRUE(APSInt::compareValues(S(7), S(8).trunc(32)) < 0);
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EXPECT_TRUE(APSInt::compareValues(S(8), S(7).trunc(32)) > 0);
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EXPECT_TRUE(APSInt::compareValues(S(7), S(7).trunc(32)) == 0);
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EXPECT_TRUE(APSInt::compareValues(S(-7), S(8).trunc(32)) < 0);
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EXPECT_TRUE(APSInt::compareValues(S(8), S(-7).trunc(32)) > 0);
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EXPECT_TRUE(APSInt::compareValues(S(-7), S(-7).trunc(32)) == 0);
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EXPECT_TRUE(APSInt::compareValues(S(-7), S(-8).trunc(32)) > 0);
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EXPECT_TRUE(APSInt::compareValues(S(-8), S(-7).trunc(32)) < 0);
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EXPECT_TRUE(APSInt::compareValues(S(-7), S(-7).trunc(32)) == 0);
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// Bit-width mismatch and not is-signed.
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EXPECT_TRUE(APSInt::compareValues(U(7), U(8).trunc(32)) < 0);
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EXPECT_TRUE(APSInt::compareValues(U(8), U(7).trunc(32)) > 0);
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EXPECT_TRUE(APSInt::compareValues(U(7), U(7).trunc(32)) == 0);
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EXPECT_TRUE(APSInt::compareValues(U(7).trunc(32), U(8)) < 0);
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EXPECT_TRUE(APSInt::compareValues(U(8).trunc(32), U(7)) > 0);
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EXPECT_TRUE(APSInt::compareValues(U(7).trunc(32), U(7)) == 0);
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// Bit-width mismatch and mixed signs.
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EXPECT_TRUE(APSInt::compareValues(U(7).trunc(32), S(8)) < 0);
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EXPECT_TRUE(APSInt::compareValues(U(8).trunc(32), S(7)) > 0);
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EXPECT_TRUE(APSInt::compareValues(U(7).trunc(32), S(7)) == 0);
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EXPECT_TRUE(APSInt::compareValues(U(8).trunc(32), S(-7)) > 0);
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EXPECT_TRUE(APSInt::compareValues(U(7), S(8).trunc(32)) < 0);
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EXPECT_TRUE(APSInt::compareValues(U(8), S(7).trunc(32)) > 0);
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EXPECT_TRUE(APSInt::compareValues(U(7), S(7).trunc(32)) == 0);
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EXPECT_TRUE(APSInt::compareValues(U(8), S(-7).trunc(32)) > 0);
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}
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}
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