256 lines
9.0 KiB
C++
256 lines
9.0 KiB
C++
//===- llvm/unittest/IR/AttributesTest.cpp - Attributes unit tests --------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/Attributes.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/DerivedTypes.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(Attributes, Uniquing) {
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LLVMContext C;
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Attribute AttrA = Attribute::get(C, Attribute::AlwaysInline);
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Attribute AttrB = Attribute::get(C, Attribute::AlwaysInline);
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EXPECT_EQ(AttrA, AttrB);
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AttributeList ASs[] = {AttributeList::get(C, 1, Attribute::ZExt),
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AttributeList::get(C, 2, Attribute::SExt)};
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AttributeList SetA = AttributeList::get(C, ASs);
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AttributeList SetB = AttributeList::get(C, ASs);
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EXPECT_EQ(SetA, SetB);
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}
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TEST(Attributes, Ordering) {
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LLVMContext C;
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Attribute Align4 = Attribute::get(C, Attribute::Alignment, 4);
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Attribute Align5 = Attribute::get(C, Attribute::Alignment, 5);
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Attribute Deref4 = Attribute::get(C, Attribute::Dereferenceable, 4);
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Attribute Deref5 = Attribute::get(C, Attribute::Dereferenceable, 5);
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EXPECT_TRUE(Align4 < Align5);
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EXPECT_TRUE(Align4 < Deref4);
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EXPECT_TRUE(Align4 < Deref5);
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EXPECT_TRUE(Align5 < Deref4);
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Attribute ByVal = Attribute::get(C, Attribute::ByVal, Type::getInt32Ty(C));
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EXPECT_FALSE(ByVal < Attribute::get(C, Attribute::ZExt));
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EXPECT_TRUE(ByVal < Align4);
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EXPECT_FALSE(ByVal < ByVal);
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AttributeList ASs[] = {AttributeList::get(C, 2, Attribute::ZExt),
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AttributeList::get(C, 1, Attribute::SExt)};
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AttributeList SetA = AttributeList::get(C, ASs);
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AttributeList SetB = SetA.removeAttributes(C, 1, ASs[1].getAttributes(1));
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EXPECT_NE(SetA, SetB);
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}
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TEST(Attributes, AddAttributes) {
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LLVMContext C;
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AttributeList AL;
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AttrBuilder B;
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B.addAttribute(Attribute::NoReturn);
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AL = AL.addAttributes(C, AttributeList::FunctionIndex, AttributeSet::get(C, B));
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EXPECT_TRUE(AL.hasFnAttribute(Attribute::NoReturn));
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B.clear();
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B.addAttribute(Attribute::SExt);
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AL = AL.addAttributes(C, AttributeList::ReturnIndex, B);
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EXPECT_TRUE(AL.hasAttribute(AttributeList::ReturnIndex, Attribute::SExt));
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EXPECT_TRUE(AL.hasFnAttribute(Attribute::NoReturn));
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}
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TEST(Attributes, RemoveAlign) {
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LLVMContext C;
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Attribute AlignAttr = Attribute::getWithAlignment(C, Align(8));
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Attribute StackAlignAttr = Attribute::getWithStackAlignment(C, Align(32));
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AttrBuilder B_align_readonly;
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B_align_readonly.addAttribute(AlignAttr);
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B_align_readonly.addAttribute(Attribute::ReadOnly);
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AttrBuilder B_align;
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B_align.addAttribute(AlignAttr);
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AttrBuilder B_stackalign_optnone;
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B_stackalign_optnone.addAttribute(StackAlignAttr);
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B_stackalign_optnone.addAttribute(Attribute::OptimizeNone);
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AttrBuilder B_stackalign;
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B_stackalign.addAttribute(StackAlignAttr);
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AttributeSet AS = AttributeSet::get(C, B_align_readonly);
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EXPECT_TRUE(AS.getAlignment() == 8);
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EXPECT_TRUE(AS.hasAttribute(Attribute::ReadOnly));
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AS = AS.removeAttribute(C, Attribute::Alignment);
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EXPECT_FALSE(AS.hasAttribute(Attribute::Alignment));
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EXPECT_TRUE(AS.hasAttribute(Attribute::ReadOnly));
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AS = AttributeSet::get(C, B_align_readonly);
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AS = AS.removeAttributes(C, B_align);
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EXPECT_TRUE(AS.getAlignment() == 0);
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EXPECT_TRUE(AS.hasAttribute(Attribute::ReadOnly));
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AttributeList AL;
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AL = AL.addParamAttributes(C, 0, B_align_readonly);
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AL = AL.addAttributes(C, 0, B_stackalign_optnone);
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EXPECT_TRUE(AL.hasAttributes(0));
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EXPECT_TRUE(AL.hasAttribute(0, Attribute::StackAlignment));
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EXPECT_TRUE(AL.hasAttribute(0, Attribute::OptimizeNone));
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EXPECT_TRUE(AL.getStackAlignment(0) == 32);
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EXPECT_TRUE(AL.hasParamAttrs(0));
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EXPECT_TRUE(AL.hasParamAttr(0, Attribute::Alignment));
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EXPECT_TRUE(AL.hasParamAttr(0, Attribute::ReadOnly));
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EXPECT_TRUE(AL.getParamAlignment(0) == 8);
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AL = AL.removeParamAttribute(C, 0, Attribute::Alignment);
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EXPECT_FALSE(AL.hasParamAttr(0, Attribute::Alignment));
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EXPECT_TRUE(AL.hasParamAttr(0, Attribute::ReadOnly));
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EXPECT_TRUE(AL.hasAttribute(0, Attribute::StackAlignment));
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EXPECT_TRUE(AL.hasAttribute(0, Attribute::OptimizeNone));
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EXPECT_TRUE(AL.getStackAlignment(0) == 32);
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AL = AL.removeAttribute(C, 0, Attribute::StackAlignment);
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EXPECT_FALSE(AL.hasParamAttr(0, Attribute::Alignment));
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EXPECT_TRUE(AL.hasParamAttr(0, Attribute::ReadOnly));
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EXPECT_FALSE(AL.hasAttribute(0, Attribute::StackAlignment));
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EXPECT_TRUE(AL.hasAttribute(0, Attribute::OptimizeNone));
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AttributeList AL2;
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AL2 = AL2.addParamAttributes(C, 0, B_align_readonly);
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AL2 = AL2.addAttributes(C, 0, B_stackalign_optnone);
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AL2 = AL2.removeParamAttributes(C, 0, B_align);
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EXPECT_FALSE(AL2.hasParamAttr(0, Attribute::Alignment));
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EXPECT_TRUE(AL2.hasParamAttr(0, Attribute::ReadOnly));
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EXPECT_TRUE(AL2.hasAttribute(0, Attribute::StackAlignment));
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EXPECT_TRUE(AL2.hasAttribute(0, Attribute::OptimizeNone));
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EXPECT_TRUE(AL2.getStackAlignment(0) == 32);
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AL2 = AL2.removeAttributes(C, 0, B_stackalign);
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EXPECT_FALSE(AL2.hasParamAttr(0, Attribute::Alignment));
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EXPECT_TRUE(AL2.hasParamAttr(0, Attribute::ReadOnly));
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EXPECT_FALSE(AL2.hasAttribute(0, Attribute::StackAlignment));
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EXPECT_TRUE(AL2.hasAttribute(0, Attribute::OptimizeNone));
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}
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TEST(Attributes, AddMatchingAlignAttr) {
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LLVMContext C;
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AttributeList AL;
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AL = AL.addAttribute(C, AttributeList::FirstArgIndex,
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Attribute::getWithAlignment(C, Align(8)));
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AL = AL.addAttribute(C, AttributeList::FirstArgIndex + 1,
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Attribute::getWithAlignment(C, Align(32)));
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EXPECT_EQ(Align(8), AL.getParamAlignment(0));
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EXPECT_EQ(Align(32), AL.getParamAlignment(1));
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AttrBuilder B;
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B.addAttribute(Attribute::NonNull);
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B.addAlignmentAttr(8);
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AL = AL.addAttributes(C, AttributeList::FirstArgIndex, B);
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EXPECT_EQ(Align(8), AL.getParamAlignment(0));
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EXPECT_EQ(Align(32), AL.getParamAlignment(1));
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EXPECT_TRUE(AL.hasParamAttribute(0, Attribute::NonNull));
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}
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TEST(Attributes, EmptyGet) {
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LLVMContext C;
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AttributeList EmptyLists[] = {AttributeList(), AttributeList()};
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AttributeList AL = AttributeList::get(C, EmptyLists);
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EXPECT_TRUE(AL.isEmpty());
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}
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TEST(Attributes, OverflowGet) {
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LLVMContext C;
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std::pair<unsigned, Attribute> Attrs[] = { { AttributeList::ReturnIndex, Attribute::get(C, Attribute::SExt) },
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{ AttributeList::FunctionIndex, Attribute::get(C, Attribute::ReadOnly) } };
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AttributeList AL = AttributeList::get(C, Attrs);
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EXPECT_EQ(2U, AL.getNumAttrSets());
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}
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TEST(Attributes, StringRepresentation) {
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LLVMContext C;
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StructType *Ty = StructType::create(Type::getInt32Ty(C), "mystruct");
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// Insufficiently careful printing can result in byval(%mystruct = { i32 })
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Attribute A = Attribute::getWithByValType(C, Ty);
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EXPECT_EQ(A.getAsString(), "byval(%mystruct)");
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A = Attribute::getWithByValType(C, Type::getInt32Ty(C));
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EXPECT_EQ(A.getAsString(), "byval(i32)");
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}
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TEST(Attributes, HasParentContext) {
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LLVMContext C1, C2;
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{
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Attribute Attr1 = Attribute::get(C1, Attribute::AlwaysInline);
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Attribute Attr2 = Attribute::get(C2, Attribute::AlwaysInline);
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EXPECT_TRUE(Attr1.hasParentContext(C1));
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EXPECT_FALSE(Attr1.hasParentContext(C2));
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EXPECT_FALSE(Attr2.hasParentContext(C1));
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EXPECT_TRUE(Attr2.hasParentContext(C2));
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}
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{
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AttributeSet AS1 = AttributeSet::get(
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C1, makeArrayRef(Attribute::get(C1, Attribute::NoReturn)));
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AttributeSet AS2 = AttributeSet::get(
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C2, makeArrayRef(Attribute::get(C2, Attribute::NoReturn)));
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EXPECT_TRUE(AS1.hasParentContext(C1));
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EXPECT_FALSE(AS1.hasParentContext(C2));
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EXPECT_FALSE(AS2.hasParentContext(C1));
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EXPECT_TRUE(AS2.hasParentContext(C2));
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}
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{
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AttributeList AL1 = AttributeList::get(C1, 1, Attribute::ZExt);
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AttributeList AL2 = AttributeList::get(C2, 1, Attribute::ZExt);
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EXPECT_TRUE(AL1.hasParentContext(C1));
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EXPECT_FALSE(AL1.hasParentContext(C2));
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EXPECT_FALSE(AL2.hasParentContext(C1));
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EXPECT_TRUE(AL2.hasParentContext(C2));
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}
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}
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TEST(Attributes, AttributeListPrinting) {
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LLVMContext C;
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{
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std::string S;
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raw_string_ostream OS(S);
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AttributeList AL;
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AL.addAttribute(C, AttributeList::FunctionIndex, Attribute::AlwaysInline)
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.print(OS);
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EXPECT_EQ(S, "AttributeList[\n"
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" { function => alwaysinline }\n"
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"]\n");
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}
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{
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std::string S;
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raw_string_ostream OS(S);
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AttributeList AL;
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AL.addAttribute(C, AttributeList::ReturnIndex, Attribute::SExt).print(OS);
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EXPECT_EQ(S, "AttributeList[\n"
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" { return => signext }\n"
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"]\n");
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}
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{
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std::string S;
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raw_string_ostream OS(S);
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AttributeList AL;
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AL.addParamAttribute(C, 5, Attribute::ZExt).print(OS);
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EXPECT_EQ(S, "AttributeList[\n"
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" { arg(5) => zeroext }\n"
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"]\n");
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}
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}
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} // end anonymous namespace
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