mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 04:30:12 +00:00
6eb43d2956
It's useful for the memory managers that are allocating a section to know what the name of the section is. At a minimum, this is useful for low-level debugging - it's customary for JITs to be able to tell you what memory they allocated, and as part of any such dump, they should be able to tell you some meta-data about what each allocation is for. This allows clients that supply their own memory managers to do this. Additionally, we also envision the SectionName being useful for passing meta-data from within LLVM to an LLVM client. This changes both the C and C++ APIs, and all of the clients of those APIs within LLVM. I'm assuming that it's safe to change the C++ API because that API is allowed to change. I'm assuming that it's safe to change the C API because we haven't shipped the API in a release yet (LLVM 3.3 doesn't include the MCJIT memory management C API). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191804 91177308-0d34-0410-b5e6-96231b3b80d8
304 lines
11 KiB
C++
304 lines
11 KiB
C++
//===- JITMemoryManagerTest.cpp - Unit tests for the JIT memory manager ---===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/ExecutionEngine/JITMemoryManager.h"
|
|
#include "llvm/ADT/ArrayRef.h"
|
|
#include "llvm/ADT/OwningPtr.h"
|
|
#include "llvm/IR/DerivedTypes.h"
|
|
#include "llvm/IR/Function.h"
|
|
#include "llvm/IR/GlobalValue.h"
|
|
#include "llvm/IR/LLVMContext.h"
|
|
#include "gtest/gtest.h"
|
|
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
|
|
Function *makeFakeFunction() {
|
|
std::vector<Type*> params;
|
|
FunctionType *FTy =
|
|
FunctionType::get(Type::getVoidTy(getGlobalContext()), params, false);
|
|
return Function::Create(FTy, GlobalValue::ExternalLinkage);
|
|
}
|
|
|
|
// Allocate three simple functions that fit in the initial slab. This exercises
|
|
// the code in the case that we don't have to allocate more memory to store the
|
|
// function bodies.
|
|
TEST(JITMemoryManagerTest, NoAllocations) {
|
|
OwningPtr<JITMemoryManager> MemMgr(
|
|
JITMemoryManager::CreateDefaultMemManager());
|
|
uintptr_t size;
|
|
std::string Error;
|
|
|
|
// Allocate the functions.
|
|
OwningPtr<Function> F1(makeFakeFunction());
|
|
size = 1024;
|
|
uint8_t *FunctionBody1 = MemMgr->startFunctionBody(F1.get(), size);
|
|
memset(FunctionBody1, 0xFF, 1024);
|
|
MemMgr->endFunctionBody(F1.get(), FunctionBody1, FunctionBody1 + 1024);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
|
|
OwningPtr<Function> F2(makeFakeFunction());
|
|
size = 1024;
|
|
uint8_t *FunctionBody2 = MemMgr->startFunctionBody(F2.get(), size);
|
|
memset(FunctionBody2, 0xFF, 1024);
|
|
MemMgr->endFunctionBody(F2.get(), FunctionBody2, FunctionBody2 + 1024);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
|
|
OwningPtr<Function> F3(makeFakeFunction());
|
|
size = 1024;
|
|
uint8_t *FunctionBody3 = MemMgr->startFunctionBody(F3.get(), size);
|
|
memset(FunctionBody3, 0xFF, 1024);
|
|
MemMgr->endFunctionBody(F3.get(), FunctionBody3, FunctionBody3 + 1024);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
|
|
// Deallocate them out of order, in case that matters.
|
|
MemMgr->deallocateFunctionBody(FunctionBody2);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
MemMgr->deallocateFunctionBody(FunctionBody1);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
MemMgr->deallocateFunctionBody(FunctionBody3);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
}
|
|
|
|
// Make three large functions that take up most of the space in the slab. Then
|
|
// try allocating three smaller functions that don't require additional slabs.
|
|
TEST(JITMemoryManagerTest, TestCodeAllocation) {
|
|
OwningPtr<JITMemoryManager> MemMgr(
|
|
JITMemoryManager::CreateDefaultMemManager());
|
|
uintptr_t size;
|
|
std::string Error;
|
|
|
|
// Big functions are a little less than the largest block size.
|
|
const uintptr_t smallFuncSize = 1024;
|
|
const uintptr_t bigFuncSize = (MemMgr->GetDefaultCodeSlabSize() -
|
|
smallFuncSize * 2);
|
|
|
|
// Allocate big functions
|
|
OwningPtr<Function> F1(makeFakeFunction());
|
|
size = bigFuncSize;
|
|
uint8_t *FunctionBody1 = MemMgr->startFunctionBody(F1.get(), size);
|
|
ASSERT_LE(bigFuncSize, size);
|
|
memset(FunctionBody1, 0xFF, bigFuncSize);
|
|
MemMgr->endFunctionBody(F1.get(), FunctionBody1, FunctionBody1 + bigFuncSize);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
|
|
OwningPtr<Function> F2(makeFakeFunction());
|
|
size = bigFuncSize;
|
|
uint8_t *FunctionBody2 = MemMgr->startFunctionBody(F2.get(), size);
|
|
ASSERT_LE(bigFuncSize, size);
|
|
memset(FunctionBody2, 0xFF, bigFuncSize);
|
|
MemMgr->endFunctionBody(F2.get(), FunctionBody2, FunctionBody2 + bigFuncSize);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
|
|
OwningPtr<Function> F3(makeFakeFunction());
|
|
size = bigFuncSize;
|
|
uint8_t *FunctionBody3 = MemMgr->startFunctionBody(F3.get(), size);
|
|
ASSERT_LE(bigFuncSize, size);
|
|
memset(FunctionBody3, 0xFF, bigFuncSize);
|
|
MemMgr->endFunctionBody(F3.get(), FunctionBody3, FunctionBody3 + bigFuncSize);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
|
|
// Check that each large function took it's own slab.
|
|
EXPECT_EQ(3U, MemMgr->GetNumCodeSlabs());
|
|
|
|
// Allocate small functions
|
|
OwningPtr<Function> F4(makeFakeFunction());
|
|
size = smallFuncSize;
|
|
uint8_t *FunctionBody4 = MemMgr->startFunctionBody(F4.get(), size);
|
|
ASSERT_LE(smallFuncSize, size);
|
|
memset(FunctionBody4, 0xFF, smallFuncSize);
|
|
MemMgr->endFunctionBody(F4.get(), FunctionBody4,
|
|
FunctionBody4 + smallFuncSize);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
|
|
OwningPtr<Function> F5(makeFakeFunction());
|
|
size = smallFuncSize;
|
|
uint8_t *FunctionBody5 = MemMgr->startFunctionBody(F5.get(), size);
|
|
ASSERT_LE(smallFuncSize, size);
|
|
memset(FunctionBody5, 0xFF, smallFuncSize);
|
|
MemMgr->endFunctionBody(F5.get(), FunctionBody5,
|
|
FunctionBody5 + smallFuncSize);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
|
|
OwningPtr<Function> F6(makeFakeFunction());
|
|
size = smallFuncSize;
|
|
uint8_t *FunctionBody6 = MemMgr->startFunctionBody(F6.get(), size);
|
|
ASSERT_LE(smallFuncSize, size);
|
|
memset(FunctionBody6, 0xFF, smallFuncSize);
|
|
MemMgr->endFunctionBody(F6.get(), FunctionBody6,
|
|
FunctionBody6 + smallFuncSize);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
|
|
// Check that the small functions didn't allocate any new slabs.
|
|
EXPECT_EQ(3U, MemMgr->GetNumCodeSlabs());
|
|
|
|
// Deallocate them out of order, in case that matters.
|
|
MemMgr->deallocateFunctionBody(FunctionBody2);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
MemMgr->deallocateFunctionBody(FunctionBody1);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
MemMgr->deallocateFunctionBody(FunctionBody4);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
MemMgr->deallocateFunctionBody(FunctionBody3);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
MemMgr->deallocateFunctionBody(FunctionBody5);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
MemMgr->deallocateFunctionBody(FunctionBody6);
|
|
EXPECT_TRUE(MemMgr->CheckInvariants(Error)) << Error;
|
|
}
|
|
|
|
// Allocate five global ints of varying widths and alignment, and check their
|
|
// alignment and overlap.
|
|
TEST(JITMemoryManagerTest, TestSmallGlobalInts) {
|
|
OwningPtr<JITMemoryManager> MemMgr(
|
|
JITMemoryManager::CreateDefaultMemManager());
|
|
uint8_t *a = (uint8_t *)MemMgr->allocateGlobal(8, 0);
|
|
uint16_t *b = (uint16_t*)MemMgr->allocateGlobal(16, 2);
|
|
uint32_t *c = (uint32_t*)MemMgr->allocateGlobal(32, 4);
|
|
uint64_t *d = (uint64_t*)MemMgr->allocateGlobal(64, 8);
|
|
|
|
// Check the alignment.
|
|
EXPECT_EQ(0U, ((uintptr_t)b) & 0x1);
|
|
EXPECT_EQ(0U, ((uintptr_t)c) & 0x3);
|
|
EXPECT_EQ(0U, ((uintptr_t)d) & 0x7);
|
|
|
|
// Initialize them each one at a time and make sure they don't overlap.
|
|
*a = 0xff;
|
|
*b = 0U;
|
|
*c = 0U;
|
|
*d = 0U;
|
|
EXPECT_EQ(0xffU, *a);
|
|
EXPECT_EQ(0U, *b);
|
|
EXPECT_EQ(0U, *c);
|
|
EXPECT_EQ(0U, *d);
|
|
*a = 0U;
|
|
*b = 0xffffU;
|
|
EXPECT_EQ(0U, *a);
|
|
EXPECT_EQ(0xffffU, *b);
|
|
EXPECT_EQ(0U, *c);
|
|
EXPECT_EQ(0U, *d);
|
|
*b = 0U;
|
|
*c = 0xffffffffU;
|
|
EXPECT_EQ(0U, *a);
|
|
EXPECT_EQ(0U, *b);
|
|
EXPECT_EQ(0xffffffffU, *c);
|
|
EXPECT_EQ(0U, *d);
|
|
*c = 0U;
|
|
*d = 0xffffffffffffffffULL;
|
|
EXPECT_EQ(0U, *a);
|
|
EXPECT_EQ(0U, *b);
|
|
EXPECT_EQ(0U, *c);
|
|
EXPECT_EQ(0xffffffffffffffffULL, *d);
|
|
|
|
// Make sure we didn't allocate any extra slabs for this tiny amount of data.
|
|
EXPECT_EQ(1U, MemMgr->GetNumDataSlabs());
|
|
}
|
|
|
|
// Allocate a small global, a big global, and a third global, and make sure we
|
|
// only use two slabs for that.
|
|
TEST(JITMemoryManagerTest, TestLargeGlobalArray) {
|
|
OwningPtr<JITMemoryManager> MemMgr(
|
|
JITMemoryManager::CreateDefaultMemManager());
|
|
size_t Size = 4 * MemMgr->GetDefaultDataSlabSize();
|
|
uint64_t *a = (uint64_t*)MemMgr->allocateGlobal(64, 8);
|
|
uint8_t *g = MemMgr->allocateGlobal(Size, 8);
|
|
uint64_t *b = (uint64_t*)MemMgr->allocateGlobal(64, 8);
|
|
|
|
// Check the alignment.
|
|
EXPECT_EQ(0U, ((uintptr_t)a) & 0x7);
|
|
EXPECT_EQ(0U, ((uintptr_t)g) & 0x7);
|
|
EXPECT_EQ(0U, ((uintptr_t)b) & 0x7);
|
|
|
|
// Initialize them to make sure we don't segfault and make sure they don't
|
|
// overlap.
|
|
memset(a, 0x1, 8);
|
|
memset(g, 0x2, Size);
|
|
memset(b, 0x3, 8);
|
|
EXPECT_EQ(0x0101010101010101ULL, *a);
|
|
// Just check the edges.
|
|
EXPECT_EQ(0x02U, g[0]);
|
|
EXPECT_EQ(0x02U, g[Size - 1]);
|
|
EXPECT_EQ(0x0303030303030303ULL, *b);
|
|
|
|
// Check the number of slabs.
|
|
EXPECT_EQ(2U, MemMgr->GetNumDataSlabs());
|
|
}
|
|
|
|
// Allocate lots of medium globals so that we can test moving the bump allocator
|
|
// to a new slab.
|
|
TEST(JITMemoryManagerTest, TestManyGlobals) {
|
|
OwningPtr<JITMemoryManager> MemMgr(
|
|
JITMemoryManager::CreateDefaultMemManager());
|
|
size_t SlabSize = MemMgr->GetDefaultDataSlabSize();
|
|
size_t Size = 128;
|
|
int Iters = (SlabSize / Size) + 1;
|
|
|
|
// We should start with no slabs.
|
|
EXPECT_EQ(0U, MemMgr->GetNumDataSlabs());
|
|
|
|
// After allocating a bunch of globals, we should have two.
|
|
for (int I = 0; I < Iters; ++I)
|
|
MemMgr->allocateGlobal(Size, 8);
|
|
EXPECT_EQ(2U, MemMgr->GetNumDataSlabs());
|
|
|
|
// And after much more, we should have three.
|
|
for (int I = 0; I < Iters; ++I)
|
|
MemMgr->allocateGlobal(Size, 8);
|
|
EXPECT_EQ(3U, MemMgr->GetNumDataSlabs());
|
|
}
|
|
|
|
// Allocate lots of function stubs so that we can test moving the stub bump
|
|
// allocator to a new slab.
|
|
TEST(JITMemoryManagerTest, TestManyStubs) {
|
|
OwningPtr<JITMemoryManager> MemMgr(
|
|
JITMemoryManager::CreateDefaultMemManager());
|
|
size_t SlabSize = MemMgr->GetDefaultStubSlabSize();
|
|
size_t Size = 128;
|
|
int Iters = (SlabSize / Size) + 1;
|
|
|
|
// We should start with no slabs.
|
|
EXPECT_EQ(0U, MemMgr->GetNumDataSlabs());
|
|
|
|
// After allocating a bunch of stubs, we should have two.
|
|
for (int I = 0; I < Iters; ++I)
|
|
MemMgr->allocateStub(NULL, Size, 8);
|
|
EXPECT_EQ(2U, MemMgr->GetNumStubSlabs());
|
|
|
|
// And after much more, we should have three.
|
|
for (int I = 0; I < Iters; ++I)
|
|
MemMgr->allocateStub(NULL, Size, 8);
|
|
EXPECT_EQ(3U, MemMgr->GetNumStubSlabs());
|
|
}
|
|
|
|
// Check section allocation and alignment
|
|
TEST(JITMemoryManagerTest, AllocateSection) {
|
|
OwningPtr<JITMemoryManager> MemMgr(
|
|
JITMemoryManager::CreateDefaultMemManager());
|
|
uint8_t *code1 = MemMgr->allocateCodeSection(256, 0, 1, StringRef());
|
|
uint8_t *data1 = MemMgr->allocateDataSection(256, 16, 2, StringRef(), true);
|
|
uint8_t *code2 = MemMgr->allocateCodeSection(257, 32, 3, StringRef());
|
|
uint8_t *data2 = MemMgr->allocateDataSection(256, 64, 4, StringRef(), false);
|
|
uint8_t *code3 = MemMgr->allocateCodeSection(258, 64, 5, StringRef());
|
|
|
|
EXPECT_NE((uint8_t*)0, code1);
|
|
EXPECT_NE((uint8_t*)0, code2);
|
|
EXPECT_NE((uint8_t*)0, data1);
|
|
EXPECT_NE((uint8_t*)0, data2);
|
|
|
|
// Check alignment
|
|
EXPECT_EQ((uint64_t)code1 & 0xf, 0u);
|
|
EXPECT_EQ((uint64_t)code2 & 0x1f, 0u);
|
|
EXPECT_EQ((uint64_t)code3 & 0x3f, 0u);
|
|
EXPECT_EQ((uint64_t)data1 & 0xf, 0u);
|
|
EXPECT_EQ((uint64_t)data2 & 0x3f, 0u);
|
|
}
|
|
|
|
}
|