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//===- llvm/unittest/IR/AttributesTest.cpp - Attributes unit tests --------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/IR/Attributes.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/DerivedTypes.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
TEST(Attributes, Uniquing) {
LLVMContext C;
Attribute AttrA = Attribute::get(C, Attribute::AlwaysInline);
Attribute AttrB = Attribute::get(C, Attribute::AlwaysInline);
EXPECT_EQ(AttrA, AttrB);
AttributeList ASs[] = {AttributeList::get(C, 1, Attribute::ZExt),
AttributeList::get(C, 2, Attribute::SExt)};
AttributeList SetA = AttributeList::get(C, ASs);
AttributeList SetB = AttributeList::get(C, ASs);
EXPECT_EQ(SetA, SetB);
}
TEST(Attributes, Ordering) {
LLVMContext C;
Attribute Align4 = Attribute::get(C, Attribute::Alignment, 4);
Attribute Align5 = Attribute::get(C, Attribute::Alignment, 5);
Attribute Deref4 = Attribute::get(C, Attribute::Dereferenceable, 4);
Attribute Deref5 = Attribute::get(C, Attribute::Dereferenceable, 5);
EXPECT_TRUE(Align4 < Align5);
EXPECT_TRUE(Align4 < Deref4);
EXPECT_TRUE(Align4 < Deref5);
EXPECT_TRUE(Align5 < Deref4);
Attribute ByVal = Attribute::get(C, Attribute::ByVal, Type::getInt32Ty(C));
EXPECT_FALSE(ByVal < Attribute::get(C, Attribute::ZExt));
EXPECT_TRUE(ByVal < Align4);
AttributeList ASs[] = {AttributeList::get(C, 2, Attribute::ZExt),
AttributeList::get(C, 1, Attribute::SExt)};
AttributeList SetA = AttributeList::get(C, ASs);
AttributeList SetB = SetA.removeAttributes(C, 1, ASs[1].getAttributes(1));
EXPECT_NE(SetA, SetB);
}
TEST(Attributes, AddAttributes) {
LLVMContext C;
AttributeList AL;
AttrBuilder B;
B.addAttribute(Attribute::NoReturn);
AL = AL.addAttributes(C, AttributeList::FunctionIndex, AttributeSet::get(C, B));
EXPECT_TRUE(AL.hasFnAttribute(Attribute::NoReturn));
B.clear();
B.addAttribute(Attribute::SExt);
AL = AL.addAttributes(C, AttributeList::ReturnIndex, B);
EXPECT_TRUE(AL.hasAttribute(AttributeList::ReturnIndex, Attribute::SExt));
EXPECT_TRUE(AL.hasFnAttribute(Attribute::NoReturn));
}
TEST(Attributes, RemoveAlign) {
LLVMContext C;
Attribute AlignAttr = Attribute::getWithAlignment(C, 8);
Attribute StackAlignAttr = Attribute::getWithStackAlignment(C, 32);
AttrBuilder B_align_readonly;
B_align_readonly.addAttribute(AlignAttr);
B_align_readonly.addAttribute(Attribute::ReadOnly);
AttrBuilder B_align;
B_align.addAttribute(AlignAttr);
AttrBuilder B_stackalign_optnone;
B_stackalign_optnone.addAttribute(StackAlignAttr);
B_stackalign_optnone.addAttribute(Attribute::OptimizeNone);
AttrBuilder B_stackalign;
B_stackalign.addAttribute(StackAlignAttr);
AttributeSet AS = AttributeSet::get(C, B_align_readonly);
EXPECT_TRUE(AS.getAlignment() == 8);
EXPECT_TRUE(AS.hasAttribute(Attribute::ReadOnly));
AS = AS.removeAttribute(C, Attribute::Alignment);
EXPECT_FALSE(AS.hasAttribute(Attribute::Alignment));
EXPECT_TRUE(AS.hasAttribute(Attribute::ReadOnly));
AS = AttributeSet::get(C, B_align_readonly);
AS = AS.removeAttributes(C, B_align);
EXPECT_TRUE(AS.getAlignment() == 0);
EXPECT_TRUE(AS.hasAttribute(Attribute::ReadOnly));
AttributeList AL;
AL = AL.addParamAttributes(C, 0, B_align_readonly);
AL = AL.addAttributes(C, 0, B_stackalign_optnone);
EXPECT_TRUE(AL.hasAttributes(0));
EXPECT_TRUE(AL.hasAttribute(0, Attribute::StackAlignment));
EXPECT_TRUE(AL.hasAttribute(0, Attribute::OptimizeNone));
EXPECT_TRUE(AL.getStackAlignment(0) == 32);
EXPECT_TRUE(AL.hasParamAttrs(0));
EXPECT_TRUE(AL.hasParamAttr(0, Attribute::Alignment));
EXPECT_TRUE(AL.hasParamAttr(0, Attribute::ReadOnly));
EXPECT_TRUE(AL.getParamAlignment(0) == 8);
AL = AL.removeParamAttribute(C, 0, Attribute::Alignment);
EXPECT_FALSE(AL.hasParamAttr(0, Attribute::Alignment));
EXPECT_TRUE(AL.hasParamAttr(0, Attribute::ReadOnly));
EXPECT_TRUE(AL.hasAttribute(0, Attribute::StackAlignment));
EXPECT_TRUE(AL.hasAttribute(0, Attribute::OptimizeNone));
EXPECT_TRUE(AL.getStackAlignment(0) == 32);
AL = AL.removeAttribute(C, 0, Attribute::StackAlignment);
EXPECT_FALSE(AL.hasParamAttr(0, Attribute::Alignment));
EXPECT_TRUE(AL.hasParamAttr(0, Attribute::ReadOnly));
EXPECT_FALSE(AL.hasAttribute(0, Attribute::StackAlignment));
EXPECT_TRUE(AL.hasAttribute(0, Attribute::OptimizeNone));
AttributeList AL2;
AL2 = AL2.addParamAttributes(C, 0, B_align_readonly);
AL2 = AL2.addAttributes(C, 0, B_stackalign_optnone);
AL2 = AL2.removeParamAttributes(C, 0, B_align);
EXPECT_FALSE(AL2.hasParamAttr(0, Attribute::Alignment));
EXPECT_TRUE(AL2.hasParamAttr(0, Attribute::ReadOnly));
EXPECT_TRUE(AL2.hasAttribute(0, Attribute::StackAlignment));
EXPECT_TRUE(AL2.hasAttribute(0, Attribute::OptimizeNone));
EXPECT_TRUE(AL2.getStackAlignment(0) == 32);
AL2 = AL2.removeAttributes(C, 0, B_stackalign);
EXPECT_FALSE(AL2.hasParamAttr(0, Attribute::Alignment));
EXPECT_TRUE(AL2.hasParamAttr(0, Attribute::ReadOnly));
EXPECT_FALSE(AL2.hasAttribute(0, Attribute::StackAlignment));
EXPECT_TRUE(AL2.hasAttribute(0, Attribute::OptimizeNone));
}
TEST(Attributes, AddMatchingAlignAttr) {
LLVMContext C;
AttributeList AL;
AL = AL.addAttribute(C, AttributeList::FirstArgIndex,
Attribute::getWithAlignment(C, 8));
AL = AL.addAttribute(C, AttributeList::FirstArgIndex + 1,
Attribute::getWithAlignment(C, 32));
EXPECT_EQ(8U, AL.getParamAlignment(0));
EXPECT_EQ(32U, AL.getParamAlignment(1));
AttrBuilder B;
B.addAttribute(Attribute::NonNull);
B.addAlignmentAttr(8);
AL = AL.addAttributes(C, AttributeList::FirstArgIndex, B);
EXPECT_EQ(8U, AL.getParamAlignment(0));
EXPECT_EQ(32U, AL.getParamAlignment(1));
EXPECT_TRUE(AL.hasParamAttribute(0, Attribute::NonNull));
}
TEST(Attributes, EmptyGet) {
LLVMContext C;
AttributeList EmptyLists[] = {AttributeList(), AttributeList()};
AttributeList AL = AttributeList::get(C, EmptyLists);
EXPECT_TRUE(AL.isEmpty());
}
TEST(Attributes, OverflowGet) {
LLVMContext C;
std::pair<unsigned, Attribute> Attrs[] = { { AttributeList::ReturnIndex, Attribute::get(C, Attribute::SExt) },
{ AttributeList::FunctionIndex, Attribute::get(C, Attribute::ReadOnly) } };
AttributeList AL = AttributeList::get(C, Attrs);
EXPECT_EQ(2U, AL.getNumAttrSets());
}
TEST(Attributes, StringRepresentation) {
LLVMContext C;
StructType *Ty = StructType::create(Type::getInt32Ty(C), "mystruct");
// Insufficiently careful printing can result in byval(%mystruct = { i32 })
Attribute A = Attribute::getWithByValType(C, Ty);
EXPECT_EQ(A.getAsString(), "byval(%mystruct)");
A = Attribute::getWithByValType(C, nullptr);
EXPECT_EQ(A.getAsString(), "byval");
A = Attribute::getWithByValType(C, Type::getInt32Ty(C));
EXPECT_EQ(A.getAsString(), "byval(i32)");
}
} // end anonymous namespace
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