forked from OSchip/llvm-project
123 lines
4.1 KiB
C++
123 lines
4.1 KiB
C++
//===- llvm/unittest/VMCore/ConstantsTest.cpp - Constants 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/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/LLVMContext.h"
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#include "gtest/gtest.h"
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namespace llvm {
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namespace {
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TEST(ConstantsTest, Integer_i1) {
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const IntegerType* Int1 = IntegerType::get(getGlobalContext(), 1);
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Constant* One = ConstantInt::get(Int1, 1, true);
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Constant* Zero = ConstantInt::get(Int1, 0);
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Constant* NegOne = ConstantInt::get(Int1, static_cast<uint64_t>(-1), true);
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EXPECT_EQ(NegOne, ConstantInt::getSigned(Int1, -1));
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Constant* Undef = UndefValue::get(Int1);
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// Input: @b = constant i1 add(i1 1 , i1 1)
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// Output: @b = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getAdd(One, One));
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// @c = constant i1 add(i1 -1, i1 1)
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// @c = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getAdd(NegOne, One));
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// @d = constant i1 add(i1 -1, i1 -1)
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// @d = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getAdd(NegOne, NegOne));
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// @e = constant i1 sub(i1 -1, i1 1)
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// @e = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getSub(NegOne, One));
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// @f = constant i1 sub(i1 1 , i1 -1)
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// @f = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getSub(One, NegOne));
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// @g = constant i1 sub(i1 1 , i1 1)
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// @g = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getSub(One, One));
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// @h = constant i1 shl(i1 1 , i1 1) ; undefined
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// @h = constant i1 undef
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EXPECT_EQ(Undef, ConstantExpr::getShl(One, One));
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// @i = constant i1 shl(i1 1 , i1 0)
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// @i = constant i1 true
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EXPECT_EQ(One, ConstantExpr::getShl(One, Zero));
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// @j = constant i1 lshr(i1 1, i1 1) ; undefined
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// @j = constant i1 undef
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EXPECT_EQ(Undef, ConstantExpr::getLShr(One, One));
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// @m = constant i1 ashr(i1 1, i1 1) ; undefined
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// @m = constant i1 undef
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EXPECT_EQ(Undef, ConstantExpr::getAShr(One, One));
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// @n = constant i1 mul(i1 -1, i1 1)
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// @n = constant i1 true
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EXPECT_EQ(One, ConstantExpr::getMul(NegOne, One));
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// @o = constant i1 sdiv(i1 -1, i1 1) ; overflow
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// @o = constant i1 true
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EXPECT_EQ(One, ConstantExpr::getSDiv(NegOne, One));
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// @p = constant i1 sdiv(i1 1 , i1 -1); overflow
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// @p = constant i1 true
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EXPECT_EQ(One, ConstantExpr::getSDiv(One, NegOne));
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// @q = constant i1 udiv(i1 -1, i1 1)
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// @q = constant i1 true
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EXPECT_EQ(One, ConstantExpr::getUDiv(NegOne, One));
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// @r = constant i1 udiv(i1 1, i1 -1)
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// @r = constant i1 true
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EXPECT_EQ(One, ConstantExpr::getUDiv(One, NegOne));
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// @s = constant i1 srem(i1 -1, i1 1) ; overflow
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// @s = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getSRem(NegOne, One));
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// @t = constant i1 urem(i1 -1, i1 1)
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// @t = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getURem(NegOne, One));
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// @u = constant i1 srem(i1 1, i1 -1) ; overflow
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// @u = constant i1 false
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EXPECT_EQ(Zero, ConstantExpr::getSRem(One, NegOne));
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}
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TEST(ConstantsTest, IntSigns) {
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const IntegerType* Int8Ty = Type::getInt8Ty(getGlobalContext());
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EXPECT_EQ(100, ConstantInt::get(Int8Ty, 100, false)->getSExtValue());
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EXPECT_EQ(100, ConstantInt::get(Int8Ty, 100, true)->getSExtValue());
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EXPECT_EQ(100, ConstantInt::getSigned(Int8Ty, 100)->getSExtValue());
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EXPECT_EQ(-50, ConstantInt::get(Int8Ty, 206)->getSExtValue());
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EXPECT_EQ(-50, ConstantInt::getSigned(Int8Ty, -50)->getSExtValue());
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EXPECT_EQ(206U, ConstantInt::getSigned(Int8Ty, -50)->getZExtValue());
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// Overflow is handled by truncation.
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EXPECT_EQ(0x3b, ConstantInt::get(Int8Ty, 0x13b)->getSExtValue());
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}
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TEST(ConstantsTest, FP128Test) {
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const Type *FP128Ty = Type::getFP128Ty(getGlobalContext());
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const IntegerType *Int128Ty = Type::getIntNTy(getGlobalContext(), 128);
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Constant *Zero128 = Constant::getNullValue(Int128Ty);
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Constant *X = ConstantExpr::getUIToFP(Zero128, FP128Ty);
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EXPECT_TRUE(isa<ConstantFP>(X));
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}
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} // end anonymous namespace
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} // end namespace llvm
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