forked from OSchip/llvm-project
745 lines
26 KiB
C++
745 lines
26 KiB
C++
//===--- ToolChains.cpp - ToolChain Implementations -----------------------===//
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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 "ToolChains.h"
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#include "Tools.h"
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#include "clang/Basic/CharInfo.h"
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#include "clang/Basic/Version.h"
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#include "clang/Driver/Compilation.h"
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#include "clang/Driver/Driver.h"
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#include "clang/Driver/DriverDiagnostic.h"
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#include "clang/Driver/Options.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Config/llvm-config.h"
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#include "llvm/Option/Arg.h"
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#include "llvm/Option/ArgList.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Process.h"
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#include <cstdio>
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// Include the necessary headers to interface with the Windows registry and
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// environment.
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#if defined(LLVM_ON_WIN32)
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#define USE_WIN32
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#endif
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#ifdef USE_WIN32
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#define WIN32_LEAN_AND_MEAN
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#define NOGDI
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#ifndef NOMINMAX
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#define NOMINMAX
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#endif
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#include <windows.h>
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#endif
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using namespace clang::driver;
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using namespace clang::driver::toolchains;
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using namespace clang;
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using namespace llvm::opt;
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MSVCToolChain::MSVCToolChain(const Driver &D, const llvm::Triple& Triple,
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const ArgList &Args)
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: ToolChain(D, Triple, Args) {
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getProgramPaths().push_back(getDriver().getInstalledDir());
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if (getDriver().getInstalledDir() != getDriver().Dir)
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getProgramPaths().push_back(getDriver().Dir);
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}
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Tool *MSVCToolChain::buildLinker() const {
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return new tools::visualstudio::Linker(*this);
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}
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Tool *MSVCToolChain::buildAssembler() const {
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if (getTriple().isOSBinFormatMachO())
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return new tools::darwin::Assembler(*this);
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getDriver().Diag(clang::diag::err_no_external_assembler);
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return nullptr;
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}
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bool MSVCToolChain::IsIntegratedAssemblerDefault() const {
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return true;
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}
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bool MSVCToolChain::IsUnwindTablesDefault() const {
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// Emit unwind tables by default on Win64. All non-x86_32 Windows platforms
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// such as ARM and PPC actually require unwind tables, but LLVM doesn't know
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// how to generate them yet.
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return getArch() == llvm::Triple::x86_64;
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}
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bool MSVCToolChain::isPICDefault() const {
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return getArch() == llvm::Triple::x86_64;
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}
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bool MSVCToolChain::isPIEDefault() const {
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return false;
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}
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bool MSVCToolChain::isPICDefaultForced() const {
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return getArch() == llvm::Triple::x86_64;
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}
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#ifdef USE_WIN32
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static bool readFullStringValue(HKEY hkey, const char *valueName,
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std::string &value) {
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// FIXME: We should be using the W versions of the registry functions, but
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// doing so requires UTF8 / UTF16 conversions similar to how we handle command
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// line arguments. The UTF8 conversion functions are not exposed publicly
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// from LLVM though, so in order to do this we will probably need to create
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// a registry abstraction in LLVMSupport that is Windows only.
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DWORD result = 0;
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DWORD valueSize = 0;
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DWORD type = 0;
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// First just query for the required size.
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result = RegQueryValueEx(hkey, valueName, NULL, &type, NULL, &valueSize);
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if (result != ERROR_SUCCESS || type != REG_SZ)
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return false;
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std::vector<BYTE> buffer(valueSize);
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result = RegQueryValueEx(hkey, valueName, NULL, NULL, &buffer[0], &valueSize);
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if (result == ERROR_SUCCESS)
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value.assign(reinterpret_cast<const char *>(buffer.data()));
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return result;
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}
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#endif
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/// \brief Read registry string.
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/// This also supports a means to look for high-versioned keys by use
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/// of a $VERSION placeholder in the key path.
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/// $VERSION in the key path is a placeholder for the version number,
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/// causing the highest value path to be searched for and used.
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/// I.e. "SOFTWARE\\Microsoft\\VisualStudio\\$VERSION".
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/// There can be additional characters in the component. Only the numeric
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/// characters are compared. This function only searches HKLM.
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static bool getSystemRegistryString(const char *keyPath, const char *valueName,
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std::string &value, std::string *phValue) {
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#ifndef USE_WIN32
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return false;
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#else
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HKEY hRootKey = HKEY_LOCAL_MACHINE;
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HKEY hKey = NULL;
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long lResult;
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bool returnValue = false;
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const char *placeHolder = strstr(keyPath, "$VERSION");
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std::string bestName;
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// If we have a $VERSION placeholder, do the highest-version search.
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if (placeHolder) {
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const char *keyEnd = placeHolder - 1;
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const char *nextKey = placeHolder;
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// Find end of previous key.
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while ((keyEnd > keyPath) && (*keyEnd != '\\'))
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keyEnd--;
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// Find end of key containing $VERSION.
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while (*nextKey && (*nextKey != '\\'))
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nextKey++;
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size_t partialKeyLength = keyEnd - keyPath;
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char partialKey[256];
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if (partialKeyLength > sizeof(partialKey))
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partialKeyLength = sizeof(partialKey);
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strncpy(partialKey, keyPath, partialKeyLength);
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partialKey[partialKeyLength] = '\0';
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HKEY hTopKey = NULL;
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lResult = RegOpenKeyEx(hRootKey, partialKey, 0, KEY_READ | KEY_WOW64_32KEY,
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&hTopKey);
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if (lResult == ERROR_SUCCESS) {
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char keyName[256];
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double bestValue = 0.0;
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DWORD index, size = sizeof(keyName) - 1;
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for (index = 0; RegEnumKeyEx(hTopKey, index, keyName, &size, NULL,
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NULL, NULL, NULL) == ERROR_SUCCESS; index++) {
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const char *sp = keyName;
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while (*sp && !isDigit(*sp))
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sp++;
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if (!*sp)
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continue;
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const char *ep = sp + 1;
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while (*ep && (isDigit(*ep) || (*ep == '.')))
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ep++;
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char numBuf[32];
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strncpy(numBuf, sp, sizeof(numBuf) - 1);
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numBuf[sizeof(numBuf) - 1] = '\0';
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double dvalue = strtod(numBuf, NULL);
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if (dvalue > bestValue) {
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// Test that InstallDir is indeed there before keeping this index.
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// Open the chosen key path remainder.
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bestName = keyName;
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// Append rest of key.
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bestName.append(nextKey);
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lResult = RegOpenKeyEx(hTopKey, bestName.c_str(), 0,
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KEY_READ | KEY_WOW64_32KEY, &hKey);
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if (lResult == ERROR_SUCCESS) {
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lResult = readFullStringValue(hKey, valueName, value);
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if (lResult == ERROR_SUCCESS) {
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bestValue = dvalue;
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if (phValue)
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*phValue = bestName;
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returnValue = true;
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}
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RegCloseKey(hKey);
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}
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}
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size = sizeof(keyName) - 1;
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}
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RegCloseKey(hTopKey);
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}
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} else {
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lResult =
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RegOpenKeyEx(hRootKey, keyPath, 0, KEY_READ | KEY_WOW64_32KEY, &hKey);
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if (lResult == ERROR_SUCCESS) {
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lResult = readFullStringValue(hKey, valueName, value);
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if (lResult == ERROR_SUCCESS)
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returnValue = true;
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if (phValue)
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phValue->clear();
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RegCloseKey(hKey);
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}
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}
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return returnValue;
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#endif // USE_WIN32
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}
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// Convert LLVM's ArchType
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// to the corresponding name of Windows SDK libraries subfolder
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static StringRef getWindowsSDKArch(llvm::Triple::ArchType Arch) {
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switch (Arch) {
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case llvm::Triple::x86:
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return "x86";
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case llvm::Triple::x86_64:
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return "x64";
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case llvm::Triple::arm:
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return "arm";
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default:
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return "";
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}
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}
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// Find the most recent version of Universal CRT or Windows 10 SDK.
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// vcvarsqueryregistry.bat from Visual Studio 2015 sorts entries in the include
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// directory by name and uses the last one of the list.
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// So we compare entry names lexicographically to find the greatest one.
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static bool getWindows10SDKVersion(const std::string &SDKPath,
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std::string &SDKVersion) {
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SDKVersion.clear();
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std::error_code EC;
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llvm::SmallString<128> IncludePath(SDKPath);
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llvm::sys::path::append(IncludePath, "Include");
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for (llvm::sys::fs::directory_iterator DirIt(IncludePath, EC), DirEnd;
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DirIt != DirEnd && !EC; DirIt.increment(EC)) {
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if (!llvm::sys::fs::is_directory(DirIt->path()))
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continue;
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StringRef CandidateName = llvm::sys::path::filename(DirIt->path());
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// If WDK is installed, there could be subfolders like "wdf" in the
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// "Include" directory.
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// Allow only directories which names start with "10.".
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if (!CandidateName.startswith("10."))
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continue;
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if (CandidateName > SDKVersion)
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SDKVersion = CandidateName;
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}
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return !SDKVersion.empty();
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}
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/// \brief Get Windows SDK installation directory.
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bool MSVCToolChain::getWindowsSDKDir(std::string &Path, int &Major,
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std::string &WindowsSDKIncludeVersion,
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std::string &WindowsSDKLibVersion) const {
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std::string RegistrySDKVersion;
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// Try the Windows registry.
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if (!getSystemRegistryString(
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"SOFTWARE\\Microsoft\\Microsoft SDKs\\Windows\\$VERSION",
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"InstallationFolder", Path, &RegistrySDKVersion))
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return false;
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if (Path.empty() || RegistrySDKVersion.empty())
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return false;
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WindowsSDKIncludeVersion.clear();
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WindowsSDKLibVersion.clear();
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Major = 0;
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std::sscanf(RegistrySDKVersion.c_str(), "v%d.", &Major);
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if (Major <= 7)
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return true;
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if (Major == 8) {
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// Windows SDK 8.x installs libraries in a folder whose names depend on the
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// version of the OS you're targeting. By default choose the newest, which
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// usually corresponds to the version of the OS you've installed the SDK on.
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const char *Tests[] = {"winv6.3", "win8", "win7"};
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for (const char *Test : Tests) {
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llvm::SmallString<128> TestPath(Path);
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llvm::sys::path::append(TestPath, "Lib", Test);
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if (llvm::sys::fs::exists(TestPath.c_str())) {
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WindowsSDKLibVersion = Test;
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break;
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}
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}
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return !WindowsSDKLibVersion.empty();
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}
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if (Major == 10) {
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if (!getWindows10SDKVersion(Path, WindowsSDKIncludeVersion))
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return false;
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WindowsSDKLibVersion = WindowsSDKIncludeVersion;
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return true;
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}
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// Unsupported SDK version
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return false;
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}
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// Gets the library path required to link against the Windows SDK.
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bool MSVCToolChain::getWindowsSDKLibraryPath(std::string &path) const {
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std::string sdkPath;
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int sdkMajor = 0;
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std::string windowsSDKIncludeVersion;
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std::string windowsSDKLibVersion;
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path.clear();
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if (!getWindowsSDKDir(sdkPath, sdkMajor, windowsSDKIncludeVersion,
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windowsSDKLibVersion))
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return false;
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llvm::SmallString<128> libPath(sdkPath);
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llvm::sys::path::append(libPath, "Lib");
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if (sdkMajor <= 7) {
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switch (getArch()) {
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// In Windows SDK 7.x, x86 libraries are directly in the Lib folder.
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case llvm::Triple::x86:
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break;
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case llvm::Triple::x86_64:
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llvm::sys::path::append(libPath, "x64");
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break;
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case llvm::Triple::arm:
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// It is not necessary to link against Windows SDK 7.x when targeting ARM.
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return false;
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default:
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return false;
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}
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} else {
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const StringRef archName = getWindowsSDKArch(getArch());
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if (archName.empty())
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return false;
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llvm::sys::path::append(libPath, windowsSDKLibVersion, "um", archName);
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}
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path = libPath.str();
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return true;
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}
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// Check if the Include path of a specified version of Visual Studio contains
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// specific header files. If not, they are probably shipped with Universal CRT.
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bool clang::driver::toolchains::MSVCToolChain::useUniversalCRT(
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std::string &VisualStudioDir) const {
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llvm::SmallString<128> TestPath(VisualStudioDir);
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llvm::sys::path::append(TestPath, "VC\\include\\stdlib.h");
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return !llvm::sys::fs::exists(TestPath);
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}
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bool MSVCToolChain::getUniversalCRTSdkDir(std::string &Path,
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std::string &UCRTVersion) const {
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// vcvarsqueryregistry.bat for Visual Studio 2015 queries the registry
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// for the specific key "KitsRoot10". So do we.
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if (!getSystemRegistryString(
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"SOFTWARE\\Microsoft\\Windows Kits\\Installed Roots", "KitsRoot10",
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Path, nullptr))
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return false;
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return getWindows10SDKVersion(Path, UCRTVersion);
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}
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bool MSVCToolChain::getUniversalCRTLibraryPath(std::string &Path) const {
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std::string UniversalCRTSdkPath;
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std::string UCRTVersion;
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Path.clear();
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if (!getUniversalCRTSdkDir(UniversalCRTSdkPath, UCRTVersion))
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return false;
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StringRef ArchName = getWindowsSDKArch(getArch());
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if (ArchName.empty())
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return false;
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llvm::SmallString<128> LibPath(UniversalCRTSdkPath);
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llvm::sys::path::append(LibPath, "Lib", UCRTVersion, "ucrt", ArchName);
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Path = LibPath.str();
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return true;
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}
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// Get the location to use for Visual Studio binaries. The location priority
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// is: %VCINSTALLDIR% > %PATH% > newest copy of Visual Studio installed on
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// system (as reported by the registry).
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bool MSVCToolChain::getVisualStudioBinariesFolder(const char *clangProgramPath,
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std::string &path) const {
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path.clear();
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SmallString<128> BinDir;
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// First check the environment variables that vsvars32.bat sets.
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llvm::Optional<std::string> VcInstallDir =
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llvm::sys::Process::GetEnv("VCINSTALLDIR");
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if (VcInstallDir.hasValue()) {
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BinDir = VcInstallDir.getValue();
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llvm::sys::path::append(BinDir, "bin");
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} else {
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// Next walk the PATH, trying to find a cl.exe in the path. If we find one,
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// use that. However, make sure it's not clang's cl.exe.
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llvm::Optional<std::string> OptPath = llvm::sys::Process::GetEnv("PATH");
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if (OptPath.hasValue()) {
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const char EnvPathSeparatorStr[] = {llvm::sys::EnvPathSeparator, '\0'};
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SmallVector<StringRef, 8> PathSegments;
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llvm::SplitString(OptPath.getValue(), PathSegments, EnvPathSeparatorStr);
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for (StringRef PathSegment : PathSegments) {
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if (PathSegment.empty())
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continue;
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SmallString<128> FilePath(PathSegment);
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llvm::sys::path::append(FilePath, "cl.exe");
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if (llvm::sys::fs::can_execute(FilePath.c_str()) &&
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!llvm::sys::fs::equivalent(FilePath.c_str(), clangProgramPath)) {
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// If we found it on the PATH, use it exactly as is with no
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// modifications.
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path = PathSegment;
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return true;
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}
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}
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}
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std::string installDir;
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// With no VCINSTALLDIR and nothing on the PATH, if we can't find it in the
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// registry then we have no choice but to fail.
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if (!getVisualStudioInstallDir(installDir))
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return false;
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// Regardless of what binary we're ultimately trying to find, we make sure
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// that this is a Visual Studio directory by checking for cl.exe. We use
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// cl.exe instead of other binaries like link.exe because programs such as
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// GnuWin32 also have a utility called link.exe, so cl.exe is the least
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// ambiguous.
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BinDir = installDir;
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llvm::sys::path::append(BinDir, "VC", "bin");
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SmallString<128> ClPath(BinDir);
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llvm::sys::path::append(ClPath, "cl.exe");
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if (!llvm::sys::fs::can_execute(ClPath.c_str()))
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return false;
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}
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if (BinDir.empty())
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return false;
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switch (getArch()) {
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case llvm::Triple::x86:
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break;
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case llvm::Triple::x86_64:
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llvm::sys::path::append(BinDir, "amd64");
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break;
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case llvm::Triple::arm:
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llvm::sys::path::append(BinDir, "arm");
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break;
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default:
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// Whatever this is, Visual Studio doesn't have a toolchain for it.
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return false;
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}
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path = BinDir.str();
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return true;
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}
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// Get Visual Studio installation directory.
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bool MSVCToolChain::getVisualStudioInstallDir(std::string &path) const {
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// First check the environment variables that vsvars32.bat sets.
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const char *vcinstalldir = getenv("VCINSTALLDIR");
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if (vcinstalldir) {
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path = vcinstalldir;
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path = path.substr(0, path.find("\\VC"));
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return true;
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}
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std::string vsIDEInstallDir;
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std::string vsExpressIDEInstallDir;
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// Then try the windows registry.
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bool hasVCDir =
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getSystemRegistryString("SOFTWARE\\Microsoft\\VisualStudio\\$VERSION",
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"InstallDir", vsIDEInstallDir, nullptr);
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if (hasVCDir && !vsIDEInstallDir.empty()) {
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path = vsIDEInstallDir.substr(0, vsIDEInstallDir.find("\\Common7\\IDE"));
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return true;
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}
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bool hasVCExpressDir =
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getSystemRegistryString("SOFTWARE\\Microsoft\\VCExpress\\$VERSION",
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"InstallDir", vsExpressIDEInstallDir, nullptr);
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if (hasVCExpressDir && !vsExpressIDEInstallDir.empty()) {
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path = vsExpressIDEInstallDir.substr(
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0, vsIDEInstallDir.find("\\Common7\\IDE"));
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return true;
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}
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// Try the environment.
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const char *vs120comntools = getenv("VS120COMNTOOLS");
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const char *vs100comntools = getenv("VS100COMNTOOLS");
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const char *vs90comntools = getenv("VS90COMNTOOLS");
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const char *vs80comntools = getenv("VS80COMNTOOLS");
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const char *vscomntools = nullptr;
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// Find any version we can
|
|
if (vs120comntools)
|
|
vscomntools = vs120comntools;
|
|
else if (vs100comntools)
|
|
vscomntools = vs100comntools;
|
|
else if (vs90comntools)
|
|
vscomntools = vs90comntools;
|
|
else if (vs80comntools)
|
|
vscomntools = vs80comntools;
|
|
|
|
if (vscomntools && *vscomntools) {
|
|
const char *p = strstr(vscomntools, "\\Common7\\Tools");
|
|
path = p ? std::string(vscomntools, p) : vscomntools;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void MSVCToolChain::AddSystemIncludeWithSubfolder(
|
|
const ArgList &DriverArgs, ArgStringList &CC1Args,
|
|
const std::string &folder, const Twine &subfolder1, const Twine &subfolder2,
|
|
const Twine &subfolder3) const {
|
|
llvm::SmallString<128> path(folder);
|
|
llvm::sys::path::append(path, subfolder1, subfolder2, subfolder3);
|
|
addSystemInclude(DriverArgs, CC1Args, path);
|
|
}
|
|
|
|
void MSVCToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
|
|
ArgStringList &CC1Args) const {
|
|
if (DriverArgs.hasArg(options::OPT_nostdinc))
|
|
return;
|
|
|
|
if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
|
|
AddSystemIncludeWithSubfolder(DriverArgs, CC1Args, getDriver().ResourceDir,
|
|
"include");
|
|
}
|
|
|
|
if (DriverArgs.hasArg(options::OPT_nostdlibinc))
|
|
return;
|
|
|
|
// Honor %INCLUDE%. It should know essential search paths with vcvarsall.bat.
|
|
if (const char *cl_include_dir = getenv("INCLUDE")) {
|
|
SmallVector<StringRef, 8> Dirs;
|
|
StringRef(cl_include_dir)
|
|
.split(Dirs, ";", /*MaxSplit=*/-1, /*KeepEmpty=*/false);
|
|
for (StringRef Dir : Dirs)
|
|
addSystemInclude(DriverArgs, CC1Args, Dir);
|
|
if (!Dirs.empty())
|
|
return;
|
|
}
|
|
|
|
std::string VSDir;
|
|
|
|
// When built with access to the proper Windows APIs, try to actually find
|
|
// the correct include paths first.
|
|
if (getVisualStudioInstallDir(VSDir)) {
|
|
AddSystemIncludeWithSubfolder(DriverArgs, CC1Args, VSDir, "VC\\include");
|
|
|
|
if (useUniversalCRT(VSDir)) {
|
|
std::string UniversalCRTSdkPath;
|
|
std::string UCRTVersion;
|
|
if (getUniversalCRTSdkDir(UniversalCRTSdkPath, UCRTVersion)) {
|
|
AddSystemIncludeWithSubfolder(DriverArgs, CC1Args, UniversalCRTSdkPath,
|
|
"Include", UCRTVersion, "ucrt");
|
|
}
|
|
}
|
|
|
|
std::string WindowsSDKDir;
|
|
int major;
|
|
std::string windowsSDKIncludeVersion;
|
|
std::string windowsSDKLibVersion;
|
|
if (getWindowsSDKDir(WindowsSDKDir, major, windowsSDKIncludeVersion,
|
|
windowsSDKLibVersion)) {
|
|
if (major >= 8) {
|
|
// Note: windowsSDKIncludeVersion is empty for SDKs prior to v10.
|
|
// Anyway, llvm::sys::path::append is able to manage it.
|
|
AddSystemIncludeWithSubfolder(DriverArgs, CC1Args, WindowsSDKDir,
|
|
"include", windowsSDKIncludeVersion,
|
|
"shared");
|
|
AddSystemIncludeWithSubfolder(DriverArgs, CC1Args, WindowsSDKDir,
|
|
"include", windowsSDKIncludeVersion,
|
|
"um");
|
|
AddSystemIncludeWithSubfolder(DriverArgs, CC1Args, WindowsSDKDir,
|
|
"include", windowsSDKIncludeVersion,
|
|
"winrt");
|
|
} else {
|
|
AddSystemIncludeWithSubfolder(DriverArgs, CC1Args, WindowsSDKDir,
|
|
"include");
|
|
}
|
|
} else {
|
|
addSystemInclude(DriverArgs, CC1Args, VSDir);
|
|
}
|
|
return;
|
|
}
|
|
|
|
// As a fallback, select default install paths.
|
|
// FIXME: Don't guess drives and paths like this on Windows.
|
|
const StringRef Paths[] = {
|
|
"C:/Program Files/Microsoft Visual Studio 10.0/VC/include",
|
|
"C:/Program Files/Microsoft Visual Studio 9.0/VC/include",
|
|
"C:/Program Files/Microsoft Visual Studio 9.0/VC/PlatformSDK/Include",
|
|
"C:/Program Files/Microsoft Visual Studio 8/VC/include",
|
|
"C:/Program Files/Microsoft Visual Studio 8/VC/PlatformSDK/Include"
|
|
};
|
|
addSystemIncludes(DriverArgs, CC1Args, Paths);
|
|
}
|
|
|
|
void MSVCToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
|
|
ArgStringList &CC1Args) const {
|
|
// FIXME: There should probably be logic here to find libc++ on Windows.
|
|
}
|
|
|
|
std::string
|
|
MSVCToolChain::ComputeEffectiveClangTriple(const ArgList &Args,
|
|
types::ID InputType) const {
|
|
std::string TripleStr =
|
|
ToolChain::ComputeEffectiveClangTriple(Args, InputType);
|
|
llvm::Triple Triple(TripleStr);
|
|
VersionTuple MSVT =
|
|
tools::visualstudio::getMSVCVersion(/*D=*/nullptr, Triple, Args,
|
|
/*IsWindowsMSVC=*/true);
|
|
if (MSVT.empty())
|
|
return TripleStr;
|
|
|
|
MSVT = VersionTuple(MSVT.getMajor(), MSVT.getMinor().getValueOr(0),
|
|
MSVT.getSubminor().getValueOr(0));
|
|
|
|
if (Triple.getEnvironment() == llvm::Triple::MSVC) {
|
|
StringRef ObjFmt = Triple.getEnvironmentName().split('-').second;
|
|
if (ObjFmt.empty())
|
|
Triple.setEnvironmentName((Twine("msvc") + MSVT.getAsString()).str());
|
|
else
|
|
Triple.setEnvironmentName(
|
|
(Twine("msvc") + MSVT.getAsString() + Twine('-') + ObjFmt).str());
|
|
}
|
|
return Triple.getTriple();
|
|
}
|
|
|
|
SanitizerMask MSVCToolChain::getSupportedSanitizers() const {
|
|
SanitizerMask Res = ToolChain::getSupportedSanitizers();
|
|
Res |= SanitizerKind::Address;
|
|
return Res;
|
|
}
|
|
|
|
llvm::opt::DerivedArgList *
|
|
MSVCToolChain::TranslateArgs(const llvm::opt::DerivedArgList &Args,
|
|
const char *BoundArch) const {
|
|
DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
|
|
const OptTable &Opts = getDriver().getOpts();
|
|
|
|
// /Oy and /Oy- only has an effect under X86-32.
|
|
bool SupportsForcingFramePointer = getArch() == llvm::Triple::x86;
|
|
|
|
// The -O[12xd] flag actually expands to several flags. We must desugar the
|
|
// flags so that options embedded can be negated. For example, the '-O2' flag
|
|
// enables '-Oy'. Expanding '-O2' into its constituent flags allows us to
|
|
// correctly handle '-O2 -Oy-' where the trailing '-Oy-' disables a single
|
|
// aspect of '-O2'.
|
|
//
|
|
// Note that this expansion logic only applies to the *last* of '[12xd]'.
|
|
|
|
// First step is to search for the character we'd like to expand.
|
|
const char *ExpandChar = nullptr;
|
|
for (Arg *A : Args) {
|
|
if (!A->getOption().matches(options::OPT__SLASH_O))
|
|
continue;
|
|
StringRef OptStr = A->getValue();
|
|
for (size_t I = 0, E = OptStr.size(); I != E; ++I) {
|
|
const char &OptChar = *(OptStr.data() + I);
|
|
if (OptChar == '1' || OptChar == '2' || OptChar == 'x' || OptChar == 'd')
|
|
ExpandChar = OptStr.data() + I;
|
|
}
|
|
}
|
|
|
|
// The -O flag actually takes an amalgam of other options. For example,
|
|
// '/Ogyb2' is equivalent to '/Og' '/Oy' '/Ob2'.
|
|
for (Arg *A : Args) {
|
|
if (!A->getOption().matches(options::OPT__SLASH_O)) {
|
|
DAL->append(A);
|
|
continue;
|
|
}
|
|
|
|
StringRef OptStr = A->getValue();
|
|
for (size_t I = 0, E = OptStr.size(); I != E; ++I) {
|
|
const char &OptChar = *(OptStr.data() + I);
|
|
switch (OptChar) {
|
|
default:
|
|
break;
|
|
case '1':
|
|
case '2':
|
|
case 'x':
|
|
case 'd':
|
|
if (&OptChar == ExpandChar) {
|
|
if (OptChar == 'd') {
|
|
DAL->AddFlagArg(A, Opts.getOption(options::OPT_O0));
|
|
} else {
|
|
if (OptChar == '1') {
|
|
DAL->AddJoinedArg(A, Opts.getOption(options::OPT_O), "s");
|
|
} else if (OptChar == '2' || OptChar == 'x') {
|
|
DAL->AddFlagArg(A, Opts.getOption(options::OPT_fbuiltin));
|
|
DAL->AddJoinedArg(A, Opts.getOption(options::OPT_O), "2");
|
|
}
|
|
if (SupportsForcingFramePointer)
|
|
DAL->AddFlagArg(A,
|
|
Opts.getOption(options::OPT_fomit_frame_pointer));
|
|
if (OptChar == '1' || OptChar == '2')
|
|
DAL->AddFlagArg(A,
|
|
Opts.getOption(options::OPT_ffunction_sections));
|
|
}
|
|
}
|
|
break;
|
|
case 'b':
|
|
if (I + 1 != E && isdigit(OptStr[I + 1]))
|
|
++I;
|
|
break;
|
|
case 'g':
|
|
break;
|
|
case 'i':
|
|
if (I + 1 != E && OptStr[I + 1] == '-') {
|
|
++I;
|
|
DAL->AddFlagArg(A, Opts.getOption(options::OPT_fno_builtin));
|
|
} else {
|
|
DAL->AddFlagArg(A, Opts.getOption(options::OPT_fbuiltin));
|
|
}
|
|
break;
|
|
case 's':
|
|
DAL->AddJoinedArg(A, Opts.getOption(options::OPT_O), "s");
|
|
break;
|
|
case 't':
|
|
DAL->AddJoinedArg(A, Opts.getOption(options::OPT_O), "2");
|
|
break;
|
|
case 'y': {
|
|
bool OmitFramePointer = true;
|
|
if (I + 1 != E && OptStr[I + 1] == '-') {
|
|
OmitFramePointer = false;
|
|
++I;
|
|
}
|
|
if (SupportsForcingFramePointer) {
|
|
if (OmitFramePointer)
|
|
DAL->AddFlagArg(A,
|
|
Opts.getOption(options::OPT_fomit_frame_pointer));
|
|
else
|
|
DAL->AddFlagArg(
|
|
A, Opts.getOption(options::OPT_fno_omit_frame_pointer));
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return DAL;
|
|
}
|