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//===- llvm/unittest/VMCore/ConstantsTest.cpp - Constants unit tests ------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/LLVMContext.h"
#include "gtest/gtest.h"
namespace llvm {
namespace {
TEST(ConstantsTest, Integer_i1) {
const IntegerType* Int1 = IntegerType::get(1);
Constant* One = getGlobalContext().getConstantInt(Int1, 1, true);
Constant* Zero = getGlobalContext().getConstantInt(Int1, 0);
Constant* NegOne =
getGlobalContext().getConstantInt(Int1, static_cast<uint64_t>(-1), true);
EXPECT_EQ(NegOne, getGlobalContext().getConstantIntSigned(Int1, -1));
Constant* Undef = getGlobalContext().getUndef(Int1);
// Input: @b = constant i1 add(i1 1 , i1 1)
// Output: @b = constant i1 false
EXPECT_EQ(Zero, getGlobalContext().getConstantExprAdd(One, One));
// @c = constant i1 add(i1 -1, i1 1)
// @c = constant i1 false
EXPECT_EQ(Zero, getGlobalContext().getConstantExprAdd(NegOne, One));
// @d = constant i1 add(i1 -1, i1 -1)
// @d = constant i1 false
EXPECT_EQ(Zero, getGlobalContext().getConstantExprAdd(NegOne, NegOne));
// @e = constant i1 sub(i1 -1, i1 1)
// @e = constant i1 false
EXPECT_EQ(Zero, getGlobalContext().getConstantExprSub(NegOne, One));
// @f = constant i1 sub(i1 1 , i1 -1)
// @f = constant i1 false
EXPECT_EQ(Zero, getGlobalContext().getConstantExprSub(One, NegOne));
// @g = constant i1 sub(i1 1 , i1 1)
// @g = constant i1 false
EXPECT_EQ(Zero, getGlobalContext().getConstantExprSub(One, One));
// @h = constant i1 shl(i1 1 , i1 1) ; undefined
// @h = constant i1 undef
EXPECT_EQ(Undef, getGlobalContext().getConstantExprShl(One, One));
// @i = constant i1 shl(i1 1 , i1 0)
// @i = constant i1 true
EXPECT_EQ(One, getGlobalContext().getConstantExprShl(One, Zero));
// @j = constant i1 lshr(i1 1, i1 1) ; undefined
// @j = constant i1 undef
EXPECT_EQ(Undef, getGlobalContext().getConstantExprLShr(One, One));
// @m = constant i1 ashr(i1 1, i1 1) ; undefined
// @m = constant i1 undef
EXPECT_EQ(Undef, getGlobalContext().getConstantExprAShr(One, One));
// @n = constant i1 mul(i1 -1, i1 1)
// @n = constant i1 true
EXPECT_EQ(One, getGlobalContext().getConstantExprMul(NegOne, One));
// @o = constant i1 sdiv(i1 -1, i1 1) ; overflow
// @o = constant i1 true
EXPECT_EQ(One, getGlobalContext().getConstantExprSDiv(NegOne, One));
// @p = constant i1 sdiv(i1 1 , i1 -1); overflow
// @p = constant i1 true
EXPECT_EQ(One, getGlobalContext().getConstantExprSDiv(One, NegOne));
// @q = constant i1 udiv(i1 -1, i1 1)
// @q = constant i1 true
EXPECT_EQ(One, getGlobalContext().getConstantExprUDiv(NegOne, One));
// @r = constant i1 udiv(i1 1, i1 -1)
// @r = constant i1 true
EXPECT_EQ(One, getGlobalContext().getConstantExprUDiv(One, NegOne));
// @s = constant i1 srem(i1 -1, i1 1) ; overflow
// @s = constant i1 false
EXPECT_EQ(Zero, getGlobalContext().getConstantExprSRem(NegOne, One));
// @t = constant i1 urem(i1 -1, i1 1)
// @t = constant i1 false
EXPECT_EQ(Zero, getGlobalContext().getConstantExprURem(NegOne, One));
// @u = constant i1 srem(i1 1, i1 -1) ; overflow
// @u = constant i1 false
EXPECT_EQ(Zero, getGlobalContext().getConstantExprSRem(One, NegOne));
}
TEST(ConstantsTest, IntSigns) {
const IntegerType* Int8Ty = Type::Int8Ty;
LLVMContext &Context = getGlobalContext();
EXPECT_EQ(100, Context.getConstantInt(Int8Ty, 100, false)->getSExtValue());
EXPECT_EQ(100, Context.getConstantInt(Int8Ty, 100, true)->getSExtValue());
EXPECT_EQ(100, Context.getConstantIntSigned(Int8Ty, 100)->getSExtValue());
EXPECT_EQ(-50, Context.getConstantInt(Int8Ty, 206)->getSExtValue());
EXPECT_EQ(-50, Context.getConstantIntSigned(Int8Ty, -50)->getSExtValue());
EXPECT_EQ(206U, Context.getConstantIntSigned(Int8Ty, -50)->getZExtValue());
// Overflow is handled by truncation.
EXPECT_EQ(0x3b, Context.getConstantInt(Int8Ty, 0x13b)->getSExtValue());
}
} // end anonymous namespace
} // end namespace llvm
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