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145 lines
4.3 KiB
C++
145 lines
4.3 KiB
C++
//===- llvm/unittest/VMCore/Metadata.cpp - Metadata 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 "gtest/gtest.h"
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#include "llvm/Constants.h"
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#include "llvm/Instructions.h"
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#include "llvm/Metadata.h"
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#include "llvm/Module.h"
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#include "llvm/Type.h"
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#include "llvm/Support/ValueHandle.h"
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#include <sstream>
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using namespace llvm;
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namespace {
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LLVMContext &Context = getGlobalContext();
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// Test that construction of MDString with different value produces different
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// MDString objects, even with the same string pointer and nulls in the string.
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TEST(MDStringTest, CreateDifferent) {
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char x[3] = { 'f', 0, 'A' };
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MDString *s1 = MDString::get(Context, StringRef(&x[0], 3));
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x[2] = 'B';
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MDString *s2 = MDString::get(Context, StringRef(&x[0], 3));
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EXPECT_NE(s1, s2);
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}
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// Test that creation of MDStrings with the same string contents produces the
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// same MDString object, even with different pointers.
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TEST(MDStringTest, CreateSame) {
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char x[4] = { 'a', 'b', 'c', 'X' };
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char y[4] = { 'a', 'b', 'c', 'Y' };
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MDString *s1 = MDString::get(Context, StringRef(&x[0], 3));
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MDString *s2 = MDString::get(Context, StringRef(&y[0], 3));
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EXPECT_EQ(s1, s2);
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}
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// Test that MDString prints out the string we fed it.
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TEST(MDStringTest, PrintingSimple) {
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char *str = new char[13];
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strncpy(str, "testing 1 2 3", 13);
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MDString *s = MDString::get(Context, StringRef(str, 13));
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strncpy(str, "aaaaaaaaaaaaa", 13);
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delete[] str;
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std::ostringstream oss;
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s->print(oss);
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EXPECT_STREQ("metadata !\"testing 1 2 3\"", oss.str().c_str());
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}
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// Test printing of MDString with non-printable characters.
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TEST(MDStringTest, PrintingComplex) {
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char str[5] = {0, '\n', '"', '\\', -1};
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MDString *s = MDString::get(Context, StringRef(str+0, 5));
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std::ostringstream oss;
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s->print(oss);
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EXPECT_STREQ("metadata !\"\\00\\0A\\22\\5C\\FF\"", oss.str().c_str());
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}
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// Test the two constructors, and containing other Constants.
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TEST(MDNodeTest, Simple) {
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char x[3] = { 'a', 'b', 'c' };
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char y[3] = { '1', '2', '3' };
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MDString *s1 = MDString::get(Context, StringRef(&x[0], 3));
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MDString *s2 = MDString::get(Context, StringRef(&y[0], 3));
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ConstantInt *CI = ConstantInt::get(getGlobalContext(), APInt(8, 0));
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std::vector<Value *> V;
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V.push_back(s1);
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V.push_back(CI);
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V.push_back(s2);
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MDNode *n1 = MDNode::get(Context, &V[0], 3);
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Value *const c1 = n1;
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MDNode *n2 = MDNode::get(Context, &c1, 1);
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MDNode *n3 = MDNode::get(Context, &V[0], 3);
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EXPECT_NE(n1, n2);
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EXPECT_EQ(n1, n3);
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EXPECT_EQ(3u, n1->getNumElements());
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EXPECT_EQ(s1, n1->getElement(0));
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EXPECT_EQ(CI, n1->getElement(1));
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EXPECT_EQ(s2, n1->getElement(2));
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EXPECT_EQ(1u, n2->getNumElements());
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EXPECT_EQ(n1, n2->getElement(0));
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std::ostringstream oss1, oss2;
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n1->print(oss1);
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n2->print(oss2);
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EXPECT_STREQ("!0 = metadata !{metadata !\"abc\", i8 0, metadata !\"123\"}\n",
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oss1.str().c_str());
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EXPECT_STREQ("!0 = metadata !{metadata !1}\n"
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"!1 = metadata !{metadata !\"abc\", i8 0, metadata !\"123\"}\n",
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oss2.str().c_str());
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}
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TEST(MDNodeTest, Delete) {
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Constant *C = ConstantInt::get(Type::Int32Ty, 1);
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Instruction *I = new BitCastInst(C, Type::Int32Ty);
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Value *const V = I;
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MDNode *n = MDNode::get(Context, &V, 1);
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WeakVH wvh = n;
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EXPECT_EQ(n, wvh);
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delete I;
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std::ostringstream oss;
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wvh->print(oss);
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EXPECT_STREQ("!0 = metadata !{null}\n", oss.str().c_str());
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}
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TEST(NamedMDNodeTest, Search) {
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Constant *C = ConstantInt::get(Type::Int32Ty, 1);
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Constant *C2 = ConstantInt::get(Type::Int32Ty, 2);
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Value *const V = C;
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Value *const V2 = C2;
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MDNode *n = MDNode::get(Context, &V, 1);
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MDNode *n2 = MDNode::get(Context, &V2, 1);
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MetadataBase *Nodes[2] = { n, n2 };
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Module *M = new Module("MyModule", getGlobalContext());
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const char *Name = "llvm.NMD1";
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NamedMDNode *NMD = NamedMDNode::Create(Name, &Nodes[0], 2, M);
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std::ostringstream oss;
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NMD->print(oss);
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EXPECT_STREQ("!llvm.NMD1 = !{!0, !1}\n!0 = metadata !{i32 1}\n"
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"!1 = metadata !{i32 2}\n",
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oss.str().c_str());
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}
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}
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