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140 lines
5.2 KiB
C++
140 lines
5.2 KiB
C++
//===- llvm/unittest/IR/ManglerTest.cpp - Mangler 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/Mangler.h"
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#include "llvm/IR/CallingConv.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/IR/GlobalValue.h"
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#include "llvm/IR/Module.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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static std::string mangleStr(StringRef IRName, Mangler &Mang,
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const DataLayout &DL) {
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std::string Mangled;
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raw_string_ostream SS(Mangled);
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Mang.getNameWithPrefix(SS, IRName, DL);
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SS.flush();
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return Mangled;
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}
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static std::string mangleFunc(StringRef IRName,
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GlobalValue::LinkageTypes Linkage,
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llvm::CallingConv::ID CC, Module &Mod,
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Mangler &Mang) {
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Type *VoidTy = Type::getVoidTy(Mod.getContext());
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Type *I32Ty = Type::getInt32Ty(Mod.getContext());
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FunctionType *FTy =
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FunctionType::get(VoidTy, {I32Ty, I32Ty, I32Ty}, /*isVarArg=*/false);
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Function *F = Function::Create(FTy, Linkage, IRName, &Mod);
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F->setCallingConv(CC);
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std::string Mangled;
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raw_string_ostream SS(Mangled);
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Mang.getNameWithPrefix(SS, F, false);
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SS.flush();
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F->eraseFromParent();
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return Mangled;
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}
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namespace {
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TEST(ManglerTest, MachO) {
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LLVMContext Ctx;
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DataLayout DL("m:o"); // macho
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Module Mod("test", Ctx);
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Mod.setDataLayout(DL);
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Mangler Mang;
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EXPECT_EQ(mangleStr("foo", Mang, DL), "_foo");
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EXPECT_EQ(mangleStr("\01foo", Mang, DL), "foo");
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EXPECT_EQ(mangleStr("?foo", Mang, DL), "_?foo");
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EXPECT_EQ(mangleFunc("foo", llvm::GlobalValue::ExternalLinkage,
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llvm::CallingConv::C, Mod, Mang),
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"_foo");
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EXPECT_EQ(mangleFunc("?foo", llvm::GlobalValue::ExternalLinkage,
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llvm::CallingConv::C, Mod, Mang),
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"_?foo");
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EXPECT_EQ(mangleFunc("foo", llvm::GlobalValue::PrivateLinkage,
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llvm::CallingConv::C, Mod, Mang),
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"L_foo");
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}
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TEST(ManglerTest, WindowsX86) {
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LLVMContext Ctx;
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DataLayout DL("m:x-p:32:32"); // 32-bit windows
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Module Mod("test", Ctx);
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Mod.setDataLayout(DL);
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Mangler Mang;
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EXPECT_EQ(mangleStr("foo", Mang, DL), "_foo");
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EXPECT_EQ(mangleStr("\01foo", Mang, DL), "foo");
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EXPECT_EQ(mangleStr("?foo", Mang, DL), "?foo");
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EXPECT_EQ(mangleFunc("foo", llvm::GlobalValue::ExternalLinkage,
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llvm::CallingConv::C, Mod, Mang),
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"_foo");
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EXPECT_EQ(mangleFunc("?foo", llvm::GlobalValue::ExternalLinkage,
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llvm::CallingConv::C, Mod, Mang),
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"?foo");
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EXPECT_EQ(mangleFunc("foo", llvm::GlobalValue::PrivateLinkage,
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llvm::CallingConv::C, Mod, Mang),
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"L_foo");
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// Test calling conv mangling.
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EXPECT_EQ(mangleFunc("stdcall", llvm::GlobalValue::ExternalLinkage,
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llvm::CallingConv::X86_StdCall, Mod, Mang),
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"_stdcall@12");
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EXPECT_EQ(mangleFunc("fastcall", llvm::GlobalValue::ExternalLinkage,
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llvm::CallingConv::X86_FastCall, Mod, Mang),
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"@fastcall@12");
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EXPECT_EQ(mangleFunc("vectorcall", llvm::GlobalValue::ExternalLinkage,
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llvm::CallingConv::X86_VectorCall, Mod, Mang),
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"vectorcall@@12");
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// Adding a '?' prefix blocks calling convention mangling.
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EXPECT_EQ(mangleFunc("?fastcall", llvm::GlobalValue::ExternalLinkage,
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llvm::CallingConv::X86_FastCall, Mod, Mang),
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"?fastcall");
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}
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TEST(ManglerTest, WindowsX64) {
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LLVMContext Ctx;
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DataLayout DL("m:w-p:64:64"); // windows
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Module Mod("test", Ctx);
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Mod.setDataLayout(DL);
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Mangler Mang;
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EXPECT_EQ(mangleStr("foo", Mang, DL), "foo");
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EXPECT_EQ(mangleStr("\01foo", Mang, DL), "foo");
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EXPECT_EQ(mangleStr("?foo", Mang, DL), "?foo");
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EXPECT_EQ(mangleFunc("foo", llvm::GlobalValue::ExternalLinkage,
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llvm::CallingConv::C, Mod, Mang),
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"foo");
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EXPECT_EQ(mangleFunc("?foo", llvm::GlobalValue::ExternalLinkage,
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llvm::CallingConv::C, Mod, Mang),
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"?foo");
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EXPECT_EQ(mangleFunc("foo", llvm::GlobalValue::PrivateLinkage,
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llvm::CallingConv::C, Mod, Mang),
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".Lfoo");
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// Test calling conv mangling.
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EXPECT_EQ(mangleFunc("stdcall", llvm::GlobalValue::ExternalLinkage,
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llvm::CallingConv::X86_StdCall, Mod, Mang),
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"stdcall");
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EXPECT_EQ(mangleFunc("fastcall", llvm::GlobalValue::ExternalLinkage,
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llvm::CallingConv::X86_FastCall, Mod, Mang),
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"fastcall");
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EXPECT_EQ(mangleFunc("vectorcall", llvm::GlobalValue::ExternalLinkage,
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llvm::CallingConv::X86_VectorCall, Mod, Mang),
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"vectorcall@@24");
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// Adding a '?' prefix blocks calling convention mangling.
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EXPECT_EQ(mangleFunc("?vectorcall", llvm::GlobalValue::ExternalLinkage,
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llvm::CallingConv::X86_VectorCall, Mod, Mang),
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"?vectorcall");
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}
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} // end anonymous namespace
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