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Diffstat (limited to 'clang/lib/Driver/ToolChains/Darwin.cpp')
-rw-r--r--clang/lib/Driver/ToolChains/Darwin.cpp105
1 files changed, 90 insertions, 15 deletions
diff --git a/clang/lib/Driver/ToolChains/Darwin.cpp b/clang/lib/Driver/ToolChains/Darwin.cpp
index ee08b8208d93..344a14fe1ea7 100644
--- a/clang/lib/Driver/ToolChains/Darwin.cpp
+++ b/clang/lib/Driver/ToolChains/Darwin.cpp
@@ -19,6 +19,7 @@
#include "clang/Driver/SanitizerArgs.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/Option/ArgList.h"
+#include "llvm/ProfileData/InstrProf.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/ScopedPrinter.h"
#include "llvm/Support/TargetParser.h"
@@ -57,6 +58,7 @@ llvm::Triple::ArchType darwin::getArchTypeForMachOArchName(StringRef Str) {
.Cases("armv7", "armv7em", "armv7k", "armv7m", llvm::Triple::arm)
.Cases("armv7s", "xscale", llvm::Triple::arm)
.Case("arm64", llvm::Triple::aarch64)
+ .Case("arm64_32", llvm::Triple::aarch64_32)
.Case("r600", llvm::Triple::r600)
.Case("amdgcn", llvm::Triple::amdgcn)
.Case("nvptx", llvm::Triple::nvptx)
@@ -122,8 +124,7 @@ void darwin::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
AddMachOArch(Args, CmdArgs);
// Use -force_cpusubtype_ALL on x86 by default.
- if (getToolChain().getArch() == llvm::Triple::x86 ||
- getToolChain().getArch() == llvm::Triple::x86_64 ||
+ if (getToolChain().getTriple().isX86() ||
Args.hasArg(options::OPT_force__cpusubtype__ALL))
CmdArgs.push_back("-force_cpusubtype_ALL");
@@ -334,7 +335,10 @@ void darwin::Linker::AddLinkArgs(Compilation &C, const ArgList &Args,
Args.AddAllArgs(CmdArgs, options::OPT_init);
// Add the deployment target.
- MachOTC.addMinVersionArgs(Args, CmdArgs);
+ if (!Version[0] || Version[0] >= 520)
+ MachOTC.addPlatformVersionArgs(Args, CmdArgs);
+ else
+ MachOTC.addMinVersionArgs(Args, CmdArgs);
Args.AddLastArg(CmdArgs, options::OPT_nomultidefs);
Args.AddLastArg(CmdArgs, options::OPT_multi__module);
@@ -737,7 +741,7 @@ Darwin::Darwin(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
CudaInstallation(D, Triple, Args) {}
types::ID MachO::LookupTypeForExtension(StringRef Ext) const {
- types::ID Ty = types::lookupTypeForExtension(Ext);
+ types::ID Ty = ToolChain::LookupTypeForExtension(Ext);
// Darwin always preprocesses assembly files (unless -x is used explicitly).
if (Ty == types::TY_PP_Asm)
@@ -831,6 +835,9 @@ StringRef MachO::getMachOArchName(const ArgList &Args) const {
default:
return getDefaultUniversalArchName();
+ case llvm::Triple::aarch64_32:
+ return "arm64_32";
+
case llvm::Triple::aarch64:
return "arm64";
@@ -1061,7 +1068,6 @@ StringRef Darwin::getPlatformFamily() const {
StringRef Darwin::getSDKName(StringRef isysroot) {
// Assume SDK has path: SOME_PATH/SDKs/PlatformXX.YY.sdk
- llvm::sys::path::const_iterator SDKDir;
auto BeginSDK = llvm::sys::path::begin(isysroot);
auto EndSDK = llvm::sys::path::end(isysroot);
for (auto IT = BeginSDK; IT != EndSDK; ++IT) {
@@ -1110,6 +1116,19 @@ static void addExportedSymbol(ArgStringList &CmdArgs, const char *Symbol) {
CmdArgs.push_back(Symbol);
}
+/// Add a sectalign directive for \p Segment and \p Section to the maximum
+/// expected page size for Darwin.
+///
+/// On iPhone 6+ the max supported page size is 16K. On macOS, the max is 4K.
+/// Use a common alignment constant (16K) for now, and reduce the alignment on
+/// macOS if it proves important.
+static void addSectalignToPage(const ArgList &Args, ArgStringList &CmdArgs,
+ StringRef Segment, StringRef Section) {
+ for (const char *A : {"-sectalign", Args.MakeArgString(Segment),
+ Args.MakeArgString(Section), "0x4000"})
+ CmdArgs.push_back(A);
+}
+
void Darwin::addProfileRTLibs(const ArgList &Args,
ArgStringList &CmdArgs) const {
if (!needsProfileRT(Args)) return;
@@ -1117,11 +1136,13 @@ void Darwin::addProfileRTLibs(const ArgList &Args,
AddLinkRuntimeLib(Args, CmdArgs, "profile",
RuntimeLinkOptions(RLO_AlwaysLink | RLO_FirstLink));
+ bool ForGCOV = needsGCovInstrumentation(Args);
+
// If we have a symbol export directive and we're linking in the profile
// runtime, automatically export symbols necessary to implement some of the
// runtime's functionality.
if (hasExportSymbolDirective(Args)) {
- if (needsGCovInstrumentation(Args)) {
+ if (ForGCOV) {
addExportedSymbol(CmdArgs, "___gcov_flush");
addExportedSymbol(CmdArgs, "_flush_fn_list");
addExportedSymbol(CmdArgs, "_writeout_fn_list");
@@ -1131,6 +1152,24 @@ void Darwin::addProfileRTLibs(const ArgList &Args,
}
addExportedSymbol(CmdArgs, "_lprofDirMode");
}
+
+ // Align __llvm_prf_{cnts,data} sections to the maximum expected page
+ // alignment. This allows profile counters to be mmap()'d to disk. Note that
+ // it's not enough to just page-align __llvm_prf_cnts: the following section
+ // must also be page-aligned so that its data is not clobbered by mmap().
+ //
+ // The section alignment is only needed when continuous profile sync is
+ // enabled, but this is expected to be the default in Xcode. Specifying the
+ // extra alignment also allows the same binary to be used with/without sync
+ // enabled.
+ if (!ForGCOV) {
+ for (auto IPSK : {llvm::IPSK_cnts, llvm::IPSK_data}) {
+ addSectalignToPage(
+ Args, CmdArgs, "__DATA",
+ llvm::getInstrProfSectionName(IPSK, llvm::Triple::MachO,
+ /*AddSegmentInfo=*/false));
+ }
+ }
}
void DarwinClang::AddLinkSanitizerLibArgs(const ArgList &Args,
@@ -1493,8 +1532,8 @@ getDeploymentTargetFromEnvironmentVariables(const Driver &TheDriver,
Targets[Darwin::TvOS] = "";
} else {
// Don't allow conflicts in any other platform.
- int FirstTarget = llvm::array_lengthof(Targets);
- for (int I = 0; I != llvm::array_lengthof(Targets); ++I) {
+ unsigned FirstTarget = llvm::array_lengthof(Targets);
+ for (unsigned I = 0; I != llvm::array_lengthof(Targets); ++I) {
if (Targets[I].empty())
continue;
if (FirstTarget == llvm::array_lengthof(Targets))
@@ -1607,7 +1646,7 @@ inferDeploymentTargetFromArch(DerivedArgList &Args, const Darwin &Toolchain,
if (MachOArchName == "armv7" || MachOArchName == "armv7s" ||
MachOArchName == "arm64")
OSTy = llvm::Triple::IOS;
- else if (MachOArchName == "armv7k")
+ else if (MachOArchName == "armv7k" || MachOArchName == "arm64_32")
OSTy = llvm::Triple::WatchOS;
else if (MachOArchName != "armv6m" && MachOArchName != "armv7m" &&
MachOArchName != "armv7em")
@@ -1796,9 +1835,7 @@ void Darwin::AddDeploymentTarget(DerivedArgList &Args) const {
DarwinEnvironmentKind Environment = OSTarget->getEnvironment();
// Recognize iOS targets with an x86 architecture as the iOS simulator.
if (Environment == NativeEnvironment && Platform != MacOS &&
- OSTarget->canInferSimulatorFromArch() &&
- (getTriple().getArch() == llvm::Triple::x86 ||
- getTriple().getArch() == llvm::Triple::x86_64))
+ OSTarget->canInferSimulatorFromArch() && getTriple().isX86())
Environment = Simulator;
setTarget(Platform, Environment, Major, Minor, Micro);
@@ -2194,8 +2231,7 @@ DerivedArgList *MachO::TranslateArgs(const DerivedArgList &Args,
}
}
- if (getTriple().getArch() == llvm::Triple::x86 ||
- getTriple().getArch() == llvm::Triple::x86_64)
+ if (getTriple().isX86())
if (!Args.hasArgNoClaim(options::OPT_mtune_EQ))
DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_mtune_EQ),
"core2");
@@ -2451,7 +2487,7 @@ bool MachO::isPICDefaultForced() const {
bool MachO::SupportsProfiling() const {
// Profiling instrumentation is only supported on x86.
- return getArch() == llvm::Triple::x86 || getArch() == llvm::Triple::x86_64;
+ return getTriple().isX86();
}
void Darwin::addMinVersionArgs(const ArgList &Args,
@@ -2478,6 +2514,45 @@ void Darwin::addMinVersionArgs(const ArgList &Args,
CmdArgs.push_back(Args.MakeArgString(TargetVersion.getAsString()));
}
+static const char *getPlatformName(Darwin::DarwinPlatformKind Platform,
+ Darwin::DarwinEnvironmentKind Environment) {
+ switch (Platform) {
+ case Darwin::MacOS:
+ return "macos";
+ case Darwin::IPhoneOS:
+ if (Environment == Darwin::NativeEnvironment ||
+ Environment == Darwin::Simulator)
+ return "ios";
+ // FIXME: Add macCatalyst support here ("\"mac catalyst\"").
+ llvm_unreachable("macCatalyst isn't yet supported");
+ case Darwin::TvOS:
+ return "tvos";
+ case Darwin::WatchOS:
+ return "watchos";
+ }
+ llvm_unreachable("invalid platform");
+}
+
+void Darwin::addPlatformVersionArgs(const llvm::opt::ArgList &Args,
+ llvm::opt::ArgStringList &CmdArgs) const {
+ // -platform_version <platform> <target_version> <sdk_version>
+ // Both the target and SDK version support only up to 3 components.
+ CmdArgs.push_back("-platform_version");
+ std::string PlatformName = getPlatformName(TargetPlatform, TargetEnvironment);
+ if (TargetEnvironment == Darwin::Simulator)
+ PlatformName += "-simulator";
+ CmdArgs.push_back(Args.MakeArgString(PlatformName));
+ VersionTuple TargetVersion = getTargetVersion().withoutBuild();
+ CmdArgs.push_back(Args.MakeArgString(TargetVersion.getAsString()));
+ if (SDKInfo) {
+ VersionTuple SDKVersion = SDKInfo->getVersion().withoutBuild();
+ CmdArgs.push_back(Args.MakeArgString(SDKVersion.getAsString()));
+ } else {
+ // Use a blank SDK version if it's not present.
+ CmdArgs.push_back("0.0.0");
+ }
+}
+
void Darwin::addStartObjectFileArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
// Derived from startfile spec.
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-08 06:07:16 +0000