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Common: Add LLVM SmallVector

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@ -358,6 +358,228 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
</pre> </pre>
<h3>LLVM - <a href="https://github.com/llvm/llvm-project">https://github.com/llvm/llvm-project</a></h3>
<pre>
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</pre>
<h3>LZMA SDK - <a href="https://7-zip.org/sdk.html">https://7-zip.org/sdk.html</a></h3> <h3>LZMA SDK - <a href="https://7-zip.org/sdk.html">https://7-zip.org/sdk.html</a></h3>
<pre> <pre>
LZMA SDK is placed in the public domain. LZMA SDK is placed in the public domain.

2
src/common/CMakeLists.txt
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@ -49,6 +49,8 @@ add_library(common
small_string.h small_string.h
string_util.cpp string_util.cpp
string_util.h string_util.h
thirdparty/SmallVector.cpp
thirdparty/SmallVector.h
threading.cpp threading.cpp
threading.h threading.h
timer.cpp timer.cpp

3
src/common/common.vcxproj
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@ -35,6 +35,7 @@
<ClInclude Include="small_string.h" /> <ClInclude Include="small_string.h" />
<ClInclude Include="heterogeneous_containers.h" /> <ClInclude Include="heterogeneous_containers.h" />
<ClInclude Include="string_util.h" /> <ClInclude Include="string_util.h" />
<ClInclude Include="thirdparty\SmallVector.h" />
<ClInclude Include="thirdparty\StackWalker.h" /> <ClInclude Include="thirdparty\StackWalker.h" />
<ClInclude Include="threading.h" /> <ClInclude Include="threading.h" />
<ClInclude Include="timer.h" /> <ClInclude Include="timer.h" />
@ -61,12 +62,14 @@
<ClCompile Include="sha1_digest.cpp" /> <ClCompile Include="sha1_digest.cpp" />
<ClCompile Include="small_string.cpp" /> <ClCompile Include="small_string.cpp" />
<ClCompile Include="string_util.cpp" /> <ClCompile Include="string_util.cpp" />
<ClCompile Include="thirdparty\SmallVector.cpp" />
<ClCompile Include="thirdparty\StackWalker.cpp" /> <ClCompile Include="thirdparty\StackWalker.cpp" />
<ClCompile Include="threading.cpp" /> <ClCompile Include="threading.cpp" />
<ClCompile Include="timer.cpp" /> <ClCompile Include="timer.cpp" />
</ItemGroup> </ItemGroup>
<ItemGroup> <ItemGroup>
<Natvis Include="bitfield.natvis" /> <Natvis Include="bitfield.natvis" />
<Natvis Include="thirdparty\llvm.natvis" />
</ItemGroup> </ItemGroup>
<ItemGroup> <ItemGroup>
<MARMASM Include="fastjmp_arm.asm"> <MARMASM Include="fastjmp_arm.asm">

9
src/common/common.vcxproj.filters
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@ -42,6 +42,9 @@
<ClInclude Include="memmap.h" /> <ClInclude Include="memmap.h" />
<ClInclude Include="intrin.h" /> <ClInclude Include="intrin.h" />
<ClInclude Include="perf_scope.h" /> <ClInclude Include="perf_scope.h" />
<ClInclude Include="thirdparty\SmallVector.h">
<Filter>thirdparty</Filter>
</ClInclude>
</ItemGroup> </ItemGroup>
<ItemGroup> <ItemGroup>
<ClCompile Include="small_string.cpp" /> <ClCompile Include="small_string.cpp" />
@ -67,9 +70,15 @@
<ClCompile Include="fastjmp.cpp" /> <ClCompile Include="fastjmp.cpp" />
<ClCompile Include="memmap.cpp" /> <ClCompile Include="memmap.cpp" />
<ClCompile Include="perf_scope.cpp" /> <ClCompile Include="perf_scope.cpp" />
<ClCompile Include="thirdparty\SmallVector.cpp">
<Filter>thirdparty</Filter>
</ClCompile>
</ItemGroup> </ItemGroup>
<ItemGroup> <ItemGroup>
<Natvis Include="bitfield.natvis" /> <Natvis Include="bitfield.natvis" />
<Natvis Include="thirdparty\llvm.natvis">
<Filter>thirdparty</Filter>
</Natvis>
</ItemGroup> </ItemGroup>
<ItemGroup> <ItemGroup>
<Filter Include="thirdparty"> <Filter Include="thirdparty">

214
src/common/thirdparty/SmallVector.cpp vendored Normal file
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@ -0,0 +1,214 @@
//===- llvm/ADT/SmallVector.cpp - 'Normally small' vectors ----------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file implements the SmallVector class.
//
//===----------------------------------------------------------------------===//
#include "common/thirdparty/SmallVector.h"
//#include "llvm/ADT/Twine.h"
//#include "llvm/Support/MemAlloc.h"
#include <cstdint>
#include <string>
#ifdef LLVM_ENABLE_EXCEPTIONS
#include <stdexcept>
#endif
using namespace llvm;
namespace llvm
{
/*LLVM_ATTRIBUTE_RETURNS_NONNULL*/ inline void *safe_malloc(size_t Sz) {
void *Result = std::malloc(Sz);
if (Result == nullptr) {
// It is implementation-defined whether allocation occurs if the space
// requested is zero (ISO/IEC 9899:2018 7.22.3). Retry, requesting
// non-zero, if the space requested was zero.
if (Sz == 0)
return safe_malloc(1);
//report_bad_alloc_error("Allocation failed");
fputs("Allocation failed\n", stderr);
abort();
}
return Result;
}
/*LLVM_ATTRIBUTE_RETURNS_NONNULL*/ inline void *safe_realloc(void *Ptr, size_t Sz) {
void *Result = std::realloc(Ptr, Sz);
if (Result == nullptr) {
// It is implementation-defined whether allocation occurs if the space
// requested is zero (ISO/IEC 9899:2018 7.22.3). Retry, requesting
// non-zero, if the space requested was zero.
if (Sz == 0)
return safe_malloc(1);
//report_bad_alloc_error("Allocation failed");
fputs("Allocation failed\n", stderr);
abort();
}
return Result;
}
}
// Check that no bytes are wasted and everything is well-aligned.
namespace {
// These structures may cause binary compat warnings on AIX. Suppress the
// warning since we are only using these types for the static assertions below.
#if defined(_AIX)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Waix-compat"
#endif
struct Struct16B {
alignas(16) void *X;
};
struct Struct32B {
alignas(32) void *X;
};
#if defined(_AIX)
#pragma GCC diagnostic pop
#endif
}
static_assert(sizeof(SmallVector<void *, 0>) ==
sizeof(unsigned) * 2 + sizeof(void *),
"wasted space in SmallVector size 0");
static_assert(alignof(SmallVector<Struct16B, 0>) >= alignof(Struct16B),
"wrong alignment for 16-byte aligned T");
static_assert(alignof(SmallVector<Struct32B, 0>) >= alignof(Struct32B),
"wrong alignment for 32-byte aligned T");
static_assert(sizeof(SmallVector<Struct16B, 0>) >= alignof(Struct16B),
"missing padding for 16-byte aligned T");
static_assert(sizeof(SmallVector<Struct32B, 0>) >= alignof(Struct32B),
"missing padding for 32-byte aligned T");
static_assert(sizeof(SmallVector<void *, 1>) ==
sizeof(unsigned) * 2 + sizeof(void *) * 2,
"wasted space in SmallVector size 1");
static_assert(sizeof(SmallVector<char, 0>) ==
sizeof(void *) * 2 + sizeof(void *),
"1 byte elements have word-sized type for size and capacity");
/// Report that MinSize doesn't fit into this vector's size type. Throws
/// std::length_error or calls report_fatal_error.
[[noreturn]] static void report_size_overflow(size_t MinSize, size_t MaxSize);
static void report_size_overflow(size_t MinSize, size_t MaxSize) {
std::string Reason = "SmallVector unable to grow. Requested capacity (" +
std::to_string(MinSize) +
") is larger than maximum value for size type (" +
std::to_string(MaxSize) + ")\n";
#ifdef LLVM_ENABLE_EXCEPTIONS
throw std::length_error(Reason);
#else
//report_fatal_error(Twine(Reason));
fputs(Reason.c_str(), stderr);
abort();
#endif
}
/// Report that this vector is already at maximum capacity. Throws
/// std::length_error or calls report_fatal_error.
[[noreturn]] static void report_at_maximum_capacity(size_t MaxSize);
static void report_at_maximum_capacity(size_t MaxSize) {
std::string Reason =
"SmallVector capacity unable to grow. Already at maximum size " +
std::to_string(MaxSize);
#ifdef LLVM_ENABLE_EXCEPTIONS
throw std::length_error(Reason);
#else
//report_fatal_error(Twine(Reason));
fputs(Reason.c_str(), stderr);
abort();
#endif
}
// Note: Moving this function into the header may cause performance regression.
template <class Size_T>
static size_t getNewCapacity(size_t MinSize, size_t TSize, size_t OldCapacity) {
constexpr size_t MaxSize = std::numeric_limits<Size_T>::max();
// Ensure we can fit the new capacity.
// This is only going to be applicable when the capacity is 32 bit.
if (MinSize > MaxSize)
report_size_overflow(MinSize, MaxSize);
// Ensure we can meet the guarantee of space for at least one more element.
// The above check alone will not catch the case where grow is called with a
// default MinSize of 0, but the current capacity cannot be increased.
// This is only going to be applicable when the capacity is 32 bit.
if (OldCapacity == MaxSize)
report_at_maximum_capacity(MaxSize);
// In theory 2*capacity can overflow if the capacity is 64 bit, but the
// original capacity would never be large enough for this to be a problem.
size_t NewCapacity = 2 * OldCapacity + 1; // Always grow.
return std::clamp(NewCapacity, MinSize, MaxSize);
}
template <class Size_T>
void *SmallVectorBase<Size_T>::replaceAllocation(void *NewElts, size_t TSize,
size_t NewCapacity,
size_t VSize) {
void *NewEltsReplace = llvm::safe_malloc(NewCapacity * TSize);
if (VSize)
memcpy(NewEltsReplace, NewElts, VSize * TSize);
free(NewElts);
return NewEltsReplace;
}
// Note: Moving this function into the header may cause performance regression.
template <class Size_T>
void *SmallVectorBase<Size_T>::mallocForGrow(void *FirstEl, size_t MinSize,
size_t TSize,
size_t &NewCapacity) {
NewCapacity = getNewCapacity<Size_T>(MinSize, TSize, this->capacity());
// Even if capacity is not 0 now, if the vector was originally created with
// capacity 0, it's possible for the malloc to return FirstEl.
//void *NewElts = llvm::safe_malloc(NewCapacity * TSize);
void* NewElts = llvm::safe_malloc(NewCapacity * TSize);
if (NewElts == FirstEl)
NewElts = replaceAllocation(NewElts, TSize, NewCapacity);
return NewElts;
}
// Note: Moving this function into the header may cause performance regression.
template <class Size_T>
void SmallVectorBase<Size_T>::grow_pod(void *FirstEl, size_t MinSize,
size_t TSize) {
size_t NewCapacity = getNewCapacity<Size_T>(MinSize, TSize, this->capacity());
void *NewElts;
if (BeginX == FirstEl) {
NewElts = llvm::safe_malloc(NewCapacity * TSize);
if (NewElts == FirstEl)
NewElts = replaceAllocation(NewElts, TSize, NewCapacity);
// Copy the elements over. No need to run dtors on PODs.
memcpy(NewElts, this->BeginX, size() * TSize);
} else {
// If this wasn't grown from the inline copy, grow the allocated space.
NewElts = llvm::safe_realloc(this->BeginX, NewCapacity * TSize);
if (NewElts == FirstEl)
NewElts = replaceAllocation(NewElts, TSize, NewCapacity, size());
}
this->BeginX = NewElts;
this->Capacity = NewCapacity;
}
template class llvm::SmallVectorBase<uint32_t>;
// Disable the uint64_t instantiation for 32-bit builds.
// Both uint32_t and uint64_t instantiations are needed for 64-bit builds.
// This instantiation will never be used in 32-bit builds, and will cause
// warnings when sizeof(Size_T) > sizeof(size_t).
#if SIZE_MAX > UINT32_MAX
template class llvm::SmallVectorBase<uint64_t>;
// Assertions to ensure this #if stays in sync with SmallVectorSizeType.
static_assert(sizeof(SmallVectorSizeType<char>) == sizeof(uint64_t),
"Expected SmallVectorBase<uint64_t> variant to be in use.");
#else
static_assert(sizeof(SmallVectorSizeType<char>) == sizeof(uint32_t),
"Expected SmallVectorBase<uint32_t> variant to be in use.");
#endif

1357
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25
src/common/thirdparty/llvm.natvis vendored Normal file
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@ -0,0 +1,25 @@
<?xml version="1.0" encoding="utf-8"?>
<!--
Visual Studio Native Debugging Visualizers for LLVM
For Visual Studio 2013 only, put this file into
"%USERPROFILE%\Documents\Visual Studio 2013\Visualizers" or create a symbolic link so it updates automatically.
For later versions of Visual Studio, no setup is required.
-->
<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
<Type Name="llvm::SmallVectorImpl&lt;*&gt;">
<DisplayString Condition="Size == 0">empty</DisplayString>
<DisplayString Condition="Size &amp;&amp; Size &lt; 4">{(value_type*)BeginX,[Size]}</DisplayString>
<DisplayString Condition="Size &gt; 3">{Size} elements</DisplayString>
<DisplayString>Uninitialized</DisplayString>
<Expand>
<Item Name="[size]">Size</Item>
<Item Name="[capacity]">Capacity</Item>
<ArrayItems>
<Size>Size</Size>
<ValuePointer>(value_type*)BeginX</ValuePointer>
</ArrayItems>
</Expand>
</Type>
</AutoVisualizer>