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Incorporate LTO stuff in GCC ArgsBuilder

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This commit is contained in:
Martin 2017-05-27 02:42:07 +02:00
parent 9c86ae9ad0
commit 1339c02598
1 changed files with 30 additions and 27 deletions
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57
driver/linker-gcc.cpp
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@ -27,13 +27,35 @@ static llvm::cl::opt<std::string>
"LLVMgold.so (Unixes) or libLTO.dylib (Darwin))"),
llvm::cl::value_desc("file"));
//////////////////////////////////////////////////////////////////////////////
namespace {
class ArgsBuilder {
public:
std::vector<std::string> args;
void build(llvm::StringRef outputPath,
llvm::cl::boolOrDefault fullyStaticFlag);
private:
void addSanitizers();
void addUserSwitches();
void addDefaultLibs();
void addArch();
#if LDC_LLVM_VER >= 309
void addLTOGoldPluginFlags();
void addDarwinLTOFlags();
void addLTOLinkFlags();
#endif
};
//////////////////////////////////////////////////////////////////////////////
// LTO functionality
#if LDC_LLVM_VER >= 309
namespace {
void addLinkerFlag(std::vector<std::string> &args, const llvm::Twine &flag) {
args.push_back("-Xlinker");
args.push_back(flag.str());
@ -75,7 +97,7 @@ std::string getLTOGoldPluginPath() {
}
}
void addLTOGoldPluginFlags(std::vector<std::string> &args) {
void ArgsBuilder::addLTOGoldPluginFlags() {
addLinkerFlag(args, "-plugin");
addLinkerFlag(args, getLTOGoldPluginPath());
@ -118,7 +140,7 @@ std::string getLTOdylibPath() {
}
}
void addDarwinLTOFlags(std::vector<std::string> &args) {
void ArgsBuilder::addDarwinLTOFlags() {
std::string dylibPath = getLTOdylibPath();
if (!dylibPath.empty()) {
args.push_back("-lto_library");
@ -127,42 +149,23 @@ void addDarwinLTOFlags(std::vector<std::string> &args) {
}
/// Adds the required linker flags for LTO builds to args.
void addLTOLinkFlags(std::vector<std::string> &args) {
void ArgsBuilder::addLTOLinkFlags() {
if (global.params.targetTriple->isOSLinux() ||
global.params.targetTriple->isOSFreeBSD() ||
global.params.targetTriple->isOSNetBSD() ||
global.params.targetTriple->isOSOpenBSD() ||
global.params.targetTriple->isOSDragonFly()) {
// Assume that ld.gold or ld.bfd is used with plugin support.
addLTOGoldPluginFlags(args);
addLTOGoldPluginFlags();
} else if (global.params.targetTriple->isOSDarwin()) {
addDarwinLTOFlags(args);
addDarwinLTOFlags();
}
}
} // anonymous namespace
#endif // LDC_LLVM_VER >= 309
//////////////////////////////////////////////////////////////////////////////
namespace {
class ArgsBuilder {
public:
std::vector<std::string> args;
void build(llvm::StringRef outputPath,
llvm::cl::boolOrDefault fullyStaticFlag);
private:
void addSanitizers();
void addUserSwitches();
void addDefaultLibs();
void addArch();
};
//////////////////////////////////////////////////////////////////////////////
void ArgsBuilder::build(llvm::StringRef outputPath,
llvm::cl::boolOrDefault fullyStaticFlag) {
// object files
@ -205,7 +208,7 @@ void ArgsBuilder::build(llvm::StringRef outputPath,
// Add LTO link flags before adding the user link switches, such that the user
// can pass additional options to the LTO plugin.
if (opts::isUsingLTO())
addLTOLinkFlags(args);
addLTOLinkFlags();
#endif
addUserSwitches();