r242058 - [cuda] Driver changes to compile and stitch together host and device-side CUDA code.
Artem Belevich
tra at google.com
Mon Jul 13 13:21:07 PDT 2015
Author: tra
Date: Mon Jul 13 15:21:06 2015
New Revision: 242058
URL: http://llvm.org/viewvc/llvm-project?rev=242058&view=rev
Log:
[cuda] Driver changes to compile and stitch together host and device-side CUDA code.
- Changed driver pipeline to compile host and device side of CUDA
files and incorporate results of device-side compilation into host
object file.
- Added a test for cuda pipeline creation in clang driver.
New clang options:
--cuda-host-only - Do host-side compilation only.
--cuda-device-only - Do device-side compilation only.
--cuda-gpu-arch=<ARCH> - specify GPU architecture for device-side
compilation. E.g. sm_35, sm_30. Default is sm_20. May be used more
than once in which case one device-compilation will be done per
unique specified GPU architecture.
Differential Revision: http://reviews.llvm.org/D9509
Added:
cfe/trunk/test/Driver/cuda-options.cu
cfe/trunk/test/Index/index-file.cu
Modified:
cfe/trunk/include/clang/Driver/Action.h
cfe/trunk/include/clang/Driver/Options.td
cfe/trunk/include/clang/Driver/Types.def
cfe/trunk/include/clang/Driver/Types.h
cfe/trunk/lib/Driver/Action.cpp
cfe/trunk/lib/Driver/Driver.cpp
cfe/trunk/lib/Driver/ToolChain.cpp
cfe/trunk/lib/Driver/ToolChains.cpp
cfe/trunk/lib/Driver/ToolChains.h
cfe/trunk/lib/Driver/Tools.cpp
cfe/trunk/lib/Driver/Types.cpp
cfe/trunk/lib/Frontend/CreateInvocationFromCommandLine.cpp
cfe/trunk/test/Index/attributes-cuda.cu
cfe/trunk/tools/libclang/CIndex.cpp
cfe/trunk/unittests/ASTMatchers/ASTMatchersTest.h
Modified: cfe/trunk/include/clang/Driver/Action.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/Action.h?rev=242058&r1=242057&r2=242058&view=diff
==============================================================================
--- cfe/trunk/include/clang/Driver/Action.h (original)
+++ cfe/trunk/include/clang/Driver/Action.h Mon Jul 13 15:21:06 2015
@@ -41,6 +41,8 @@ public:
enum ActionClass {
InputClass = 0,
BindArchClass,
+ CudaDeviceClass,
+ CudaHostClass,
PreprocessJobClass,
PrecompileJobClass,
AnalyzeJobClass,
@@ -133,6 +135,41 @@ public:
}
};
+class CudaDeviceAction : public Action {
+ virtual void anchor();
+ /// GPU architecture to bind -- e.g 'sm_35'.
+ const char *GpuArchName;
+ /// True when action results are not consumed by the host action (e.g when
+ /// -fsyntax-only or --cuda-device-only options are used).
+ bool AtTopLevel;
+
+public:
+ CudaDeviceAction(std::unique_ptr<Action> Input, const char *ArchName,
+ bool AtTopLevel);
+
+ const char *getGpuArchName() const { return GpuArchName; }
+ bool isAtTopLevel() const { return AtTopLevel; }
+
+ static bool classof(const Action *A) {
+ return A->getKind() == CudaDeviceClass;
+ }
+};
+
+class CudaHostAction : public Action {
+ virtual void anchor();
+ ActionList DeviceActions;
+
+public:
+ CudaHostAction(std::unique_ptr<Action> Input,
+ const ActionList &DeviceActions);
+ ~CudaHostAction() override;
+
+ ActionList &getDeviceActions() { return DeviceActions; }
+ const ActionList &getDeviceActions() const { return DeviceActions; }
+
+ static bool classof(const Action *A) { return A->getKind() == CudaHostClass; }
+};
+
class JobAction : public Action {
virtual void anchor();
protected:
Modified: cfe/trunk/include/clang/Driver/Options.td
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/Options.td?rev=242058&r1=242057&r2=242058&view=diff
==============================================================================
--- cfe/trunk/include/clang/Driver/Options.td (original)
+++ cfe/trunk/include/clang/Driver/Options.td Mon Jul 13 15:21:06 2015
@@ -351,6 +351,12 @@ def cxx_isystem : JoinedOrSeparate<["-"]
MetaVarName<"<directory>">;
def c : Flag<["-"], "c">, Flags<[DriverOption]>,
HelpText<"Only run preprocess, compile, and assemble steps">;
+def cuda_device_only : Flag<["--"], "cuda-device-only">,
+ HelpText<"Do device-side CUDA compilation only">;
+def cuda_gpu_arch_EQ : Joined<["--"], "cuda-gpu-arch=">,
+ Flags<[DriverOption, HelpHidden]>, HelpText<"CUDA GPU architecture">;
+def cuda_host_only : Flag<["--"], "cuda-host-only">,
+ HelpText<"Do host-side CUDA compilation only">;
def dA : Flag<["-"], "dA">, Group<d_Group>;
def dD : Flag<["-"], "dD">, Group<d_Group>, Flags<[CC1Option]>,
HelpText<"Print macro definitions in -E mode in addition to normal output">;
Modified: cfe/trunk/include/clang/Driver/Types.def
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/Types.def?rev=242058&r1=242057&r2=242058&view=diff
==============================================================================
--- cfe/trunk/include/clang/Driver/Types.def (original)
+++ cfe/trunk/include/clang/Driver/Types.def Mon Jul 13 15:21:06 2015
@@ -44,6 +44,7 @@ TYPE("c", C,
TYPE("cl", CL, PP_C, "cl", "u")
TYPE("cuda-cpp-output", PP_CUDA, INVALID, "cui", "u")
TYPE("cuda", CUDA, PP_CUDA, "cu", "u")
+TYPE("cuda", CUDA_DEVICE, PP_CUDA, "cu", "")
TYPE("objective-c-cpp-output", PP_ObjC, INVALID, "mi", "u")
TYPE("objc-cpp-output", PP_ObjC_Alias, INVALID, "mi", "u")
TYPE("objective-c", ObjC, PP_ObjC, "m", "u")
Modified: cfe/trunk/include/clang/Driver/Types.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/Types.h?rev=242058&r1=242057&r2=242058&view=diff
==============================================================================
--- cfe/trunk/include/clang/Driver/Types.h (original)
+++ cfe/trunk/include/clang/Driver/Types.h Mon Jul 13 15:21:06 2015
@@ -63,6 +63,9 @@ namespace types {
/// isCXX - Is this a "C++" input (C++ and Obj-C++ sources and headers).
bool isCXX(ID Id);
+ /// isCuda - Is this a CUDA input.
+ bool isCuda(ID Id);
+
/// isObjC - Is this an "ObjC" input (Obj-C and Obj-C++ sources and headers).
bool isObjC(ID Id);
Modified: cfe/trunk/lib/Driver/Action.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/Action.cpp?rev=242058&r1=242057&r2=242058&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/Action.cpp (original)
+++ cfe/trunk/lib/Driver/Action.cpp Mon Jul 13 15:21:06 2015
@@ -24,6 +24,8 @@ const char *Action::getClassName(ActionC
switch (AC) {
case InputClass: return "input";
case BindArchClass: return "bind-arch";
+ case CudaDeviceClass: return "cuda-device";
+ case CudaHostClass: return "cuda-host";
case PreprocessJobClass: return "preprocessor";
case PrecompileJobClass: return "precompiler";
case AnalyzeJobClass: return "analyzer";
@@ -53,6 +55,25 @@ BindArchAction::BindArchAction(std::uniq
const char *_ArchName)
: Action(BindArchClass, std::move(Input)), ArchName(_ArchName) {}
+void CudaDeviceAction::anchor() {}
+
+CudaDeviceAction::CudaDeviceAction(std::unique_ptr<Action> Input,
+ const char *ArchName, bool AtTopLevel)
+ : Action(CudaDeviceClass, std::move(Input)), GpuArchName(ArchName),
+ AtTopLevel(AtTopLevel) {}
+
+void CudaHostAction::anchor() {}
+
+CudaHostAction::CudaHostAction(std::unique_ptr<Action> Input,
+ const ActionList &_DeviceActions)
+ : Action(CudaHostClass, std::move(Input)), DeviceActions(_DeviceActions) {}
+
+CudaHostAction::~CudaHostAction() {
+ for (iterator it = DeviceActions.begin(), ie = DeviceActions.end(); it != ie;
+ ++it)
+ delete *it;
+}
+
void JobAction::anchor() {}
JobAction::JobAction(ActionClass Kind, std::unique_ptr<Action> Input,
Modified: cfe/trunk/lib/Driver/Driver.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/Driver.cpp?rev=242058&r1=242057&r2=242058&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/Driver.cpp (original)
+++ cfe/trunk/lib/Driver/Driver.cpp Mon Jul 13 15:21:06 2015
@@ -174,8 +174,10 @@ phases::ID Driver::getFinalPhase(const D
} else if ((PhaseArg = DAL.getLastArg(options::OPT_S))) {
FinalPhase = phases::Backend;
- // -c only runs up to the assembler.
- } else if ((PhaseArg = DAL.getLastArg(options::OPT_c))) {
+ // -c and partial CUDA compilations only run up to the assembler.
+ } else if ((PhaseArg = DAL.getLastArg(options::OPT_c)) ||
+ (PhaseArg = DAL.getLastArg(options::OPT_cuda_device_only)) ||
+ (PhaseArg = DAL.getLastArg(options::OPT_cuda_host_only))) {
FinalPhase = phases::Assemble;
// Otherwise do everything.
@@ -900,9 +902,20 @@ static unsigned PrintActions1(const Comp
} else if (BindArchAction *BIA = dyn_cast<BindArchAction>(A)) {
os << '"' << BIA->getArchName() << '"' << ", {"
<< PrintActions1(C, *BIA->begin(), Ids) << "}";
+ } else if (CudaDeviceAction *CDA = dyn_cast<CudaDeviceAction>(A)) {
+ os << '"' << CDA->getGpuArchName() << '"' << ", {"
+ << PrintActions1(C, *CDA->begin(), Ids) << "}";
} else {
+ ActionList *AL;
+ if (CudaHostAction *CHA = dyn_cast<CudaHostAction>(A)) {
+ os << "{" << PrintActions1(C, *CHA->begin(), Ids) << "}"
+ << ", gpu binaries ";
+ AL = &CHA->getDeviceActions();
+ } else
+ AL = &A->getInputs();
+
const char *Prefix = "{";
- for (Action *PreRequisite : *A) {
+ for (Action *PreRequisite : *AL) {
os << Prefix << PrintActions1(C, PreRequisite, Ids);
Prefix = ", ";
}
@@ -1215,6 +1228,93 @@ void Driver::BuildInputs(const ToolChain
}
}
+// For each unique --cuda-gpu-arch= argument creates a TY_CUDA_DEVICE input
+// action and then wraps each in CudaDeviceAction paired with appropriate GPU
+// arch name. If we're only building device-side code, each action remains
+// independent. Otherwise we pass device-side actions as inputs to a new
+// CudaHostAction which combines both host and device side actions.
+static std::unique_ptr<Action>
+buildCudaActions(const Driver &D, const ToolChain &TC, DerivedArgList &Args,
+ const Arg *InputArg, const types::ID InputType,
+ std::unique_ptr<Action> Current, ActionList &Actions) {
+
+ assert(InputType == types::TY_CUDA &&
+ "CUDA Actions only apply to CUDA inputs.");
+
+ // Collect all cuda_gpu_arch parameters, removing duplicates.
+ SmallVector<const char *, 4> GpuArchList;
+ llvm::StringSet<> GpuArchNames;
+ for (Arg *A : Args) {
+ if (A->getOption().matches(options::OPT_cuda_gpu_arch_EQ)) {
+ A->claim();
+ if (GpuArchNames.insert(A->getValue()).second)
+ GpuArchList.push_back(A->getValue());
+ }
+ }
+
+ // Default to sm_20 which is the lowest common denominator for supported GPUs.
+ // sm_20 code should work correctly, if suboptimally, on all newer GPUs.
+ if (GpuArchList.empty())
+ GpuArchList.push_back("sm_20");
+
+ // Replicate inputs for each GPU architecture.
+ Driver::InputList CudaDeviceInputs;
+ for (unsigned i = 0, e = GpuArchList.size(); i != e; ++i)
+ CudaDeviceInputs.push_back(std::make_pair(types::TY_CUDA_DEVICE, InputArg));
+
+ // Build actions for all device inputs.
+ ActionList CudaDeviceActions;
+ D.BuildActions(TC, Args, CudaDeviceInputs, CudaDeviceActions);
+ assert(GpuArchList.size() == CudaDeviceActions.size() &&
+ "Failed to create actions for all devices");
+
+ // Check whether any of device actions stopped before they could generate PTX.
+ bool PartialCompilation = false;
+ bool DeviceOnlyCompilation = Args.hasArg(options::OPT_cuda_device_only);
+ for (unsigned i = 0, e = GpuArchList.size(); i != e; ++i) {
+ if (CudaDeviceActions[i]->getKind() != Action::BackendJobClass) {
+ PartialCompilation = true;
+ break;
+ }
+ }
+
+ // Figure out what to do with device actions -- pass them as inputs to the
+ // host action or run each of them independently.
+ if (PartialCompilation || DeviceOnlyCompilation) {
+ // In case of partial or device-only compilation results of device actions
+ // are not consumed by the host action device actions have to be added to
+ // top-level actions list with AtTopLevel=true and run independently.
+
+ // -o is ambiguous if we have more than one top-level action.
+ if (Args.hasArg(options::OPT_o) &&
+ (!DeviceOnlyCompilation || GpuArchList.size() > 1)) {
+ D.Diag(clang::diag::err_drv_output_argument_with_multiple_files);
+ return nullptr;
+ }
+
+ for (unsigned i = 0, e = GpuArchList.size(); i != e; ++i)
+ Actions.push_back(
+ new CudaDeviceAction(std::unique_ptr<Action>(CudaDeviceActions[i]),
+ GpuArchList[i], /* AtTopLevel */ true));
+ // Kill host action in case of device-only compilation.
+ if (DeviceOnlyCompilation)
+ Current.reset(nullptr);
+ return Current;
+ } else {
+ // Outputs of device actions during complete CUDA compilation get created
+ // with AtTopLevel=false and become inputs for the host action.
+ ActionList DeviceActions;
+ for (unsigned i = 0, e = GpuArchList.size(); i != e; ++i)
+ DeviceActions.push_back(
+ new CudaDeviceAction(std::unique_ptr<Action>(CudaDeviceActions[i]),
+ GpuArchList[i], /* AtTopLevel */ false));
+ // Return a new host action that incorporates original host action and all
+ // device actions.
+ return std::unique_ptr<Action>(
+ new CudaHostAction(std::move(Current), DeviceActions));
+ }
+}
+
void Driver::BuildActions(const ToolChain &TC, DerivedArgList &Args,
const InputList &Inputs, ActionList &Actions) const {
llvm::PrettyStackTraceString CrashInfo("Building compilation actions");
@@ -1312,6 +1412,25 @@ void Driver::BuildActions(const ToolChai
continue;
}
+ phases::ID CudaInjectionPhase;
+ if (isSaveTempsEnabled()) {
+ // All phases are done independently, inject GPU blobs during compilation
+ // phase as that's where we generate glue code to init them.
+ CudaInjectionPhase = phases::Compile;
+ } else {
+ // Assumes that clang does everything up until linking phase, so we inject
+ // cuda device actions at the last step before linking. Otherwise CUDA
+ // host action forces preprocessor into a separate invocation.
+ if (FinalPhase == phases::Link) {
+ for (auto i = PL.begin(), e = PL.end(); i != e; ++i) {
+ auto next = i + 1;
+ if (next != e && *next == phases::Link)
+ CudaInjectionPhase = *i;
+ }
+ } else
+ CudaInjectionPhase = FinalPhase;
+ }
+
// Build the pipeline for this file.
std::unique_ptr<Action> Current(new InputAction(*InputArg, InputType));
for (SmallVectorImpl<phases::ID>::iterator i = PL.begin(), e = PL.end();
@@ -1337,6 +1456,15 @@ void Driver::BuildActions(const ToolChai
// Otherwise construct the appropriate action.
Current = ConstructPhaseAction(TC, Args, Phase, std::move(Current));
+
+ if (InputType == types::TY_CUDA && Phase == CudaInjectionPhase &&
+ !Args.hasArg(options::OPT_cuda_host_only)) {
+ Current = buildCudaActions(*this, TC, Args, InputArg, InputType,
+ std::move(Current), Actions);
+ if (!Current)
+ break;
+ }
+
if (Current->getType() == types::TY_Nothing)
break;
}
@@ -1576,7 +1704,13 @@ static const Tool *SelectToolForJob(Comp
if (isa<BackendJobAction>(JA)) {
// Check if the compiler supports emitting LLVM IR.
assert(Inputs->size() == 1);
- JobAction *CompileJA = cast<CompileJobAction>(*Inputs->begin());
+ JobAction *CompileJA;
+ // Extract real host action, if it's a CudaHostAction.
+ if (CudaHostAction *CudaHA = dyn_cast<CudaHostAction>(*Inputs->begin()))
+ CompileJA = cast<CompileJobAction>(*CudaHA->begin());
+ else
+ CompileJA = cast<CompileJobAction>(*Inputs->begin());
+
const Tool *Compiler = TC->SelectTool(*CompileJA);
if (!Compiler)
return nullptr;
@@ -1610,6 +1744,20 @@ void Driver::BuildJobsForAction(Compilat
InputInfo &Result) const {
llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
+ InputInfoList CudaDeviceInputInfos;
+ if (const CudaHostAction *CHA = dyn_cast<CudaHostAction>(A)) {
+ InputInfo II;
+ // Append outputs of device jobs to the input list.
+ for (const Action *DA : CHA->getDeviceActions()) {
+ BuildJobsForAction(C, DA, TC, "", AtTopLevel,
+ /*MultipleArchs*/ false, LinkingOutput, II);
+ CudaDeviceInputInfos.push_back(II);
+ }
+ // Override current action with a real host compile action and continue
+ // processing it.
+ A = *CHA->begin();
+ }
+
if (const InputAction *IA = dyn_cast<InputAction>(A)) {
// FIXME: It would be nice to not claim this here; maybe the old scheme of
// just using Args was better?
@@ -1635,11 +1783,24 @@ void Driver::BuildJobsForAction(Compilat
else
TC = &C.getDefaultToolChain();
- BuildJobsForAction(C, *BAA->begin(), TC, BAA->getArchName(), AtTopLevel,
+ BuildJobsForAction(C, *BAA->begin(), TC, ArchName, AtTopLevel,
MultipleArchs, LinkingOutput, Result);
return;
}
+ if (const CudaDeviceAction *CDA = dyn_cast<CudaDeviceAction>(A)) {
+ // Figure out which NVPTX triple to use for device-side compilation based on
+ // whether host is 64-bit.
+ llvm::Triple DeviceTriple(C.getDefaultToolChain().getTriple().isArch64Bit()
+ ? "nvptx64-nvidia-cuda"
+ : "nvptx-nvidia-cuda");
+ BuildJobsForAction(C, *CDA->begin(),
+ &getToolChain(C.getArgs(), DeviceTriple),
+ CDA->getGpuArchName(), CDA->isAtTopLevel(),
+ /*MultipleArchs*/ true, LinkingOutput, Result);
+ return;
+ }
+
const ActionList *Inputs = &A->getInputs();
const JobAction *JA = cast<JobAction>(A);
@@ -1671,6 +1832,10 @@ void Driver::BuildJobsForAction(Compilat
if (JA->getType() == types::TY_dSYM)
BaseInput = InputInfos[0].getFilename();
+ // Append outputs of cuda device jobs to the input list
+ if (CudaDeviceInputInfos.size())
+ InputInfos.append(CudaDeviceInputInfos.begin(), CudaDeviceInputInfos.end());
+
// Determine the place to write output to, if any.
if (JA->getType() == types::TY_Nothing)
Result = InputInfo(A->getType(), BaseInput);
@@ -2052,6 +2217,9 @@ const ToolChain &Driver::getToolChain(co
break;
}
break;
+ case llvm::Triple::CUDA:
+ TC = new toolchains::CudaToolChain(*this, Target, Args);
+ break;
default:
// Of these targets, Hexagon is the only one that might have
// an OS of Linux, in which case it got handled above already.
Modified: cfe/trunk/lib/Driver/ToolChain.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChain.cpp?rev=242058&r1=242057&r2=242058&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/ToolChain.cpp (original)
+++ cfe/trunk/lib/Driver/ToolChain.cpp Mon Jul 13 15:21:06 2015
@@ -151,6 +151,8 @@ Tool *ToolChain::getTool(Action::ActionC
case Action::InputClass:
case Action::BindArchClass:
+ case Action::CudaDeviceClass:
+ case Action::CudaHostClass:
case Action::LipoJobClass:
case Action::DsymutilJobClass:
case Action::VerifyDebugInfoJobClass:
Modified: cfe/trunk/lib/Driver/ToolChains.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains.cpp?rev=242058&r1=242057&r2=242058&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/ToolChains.cpp (original)
+++ cfe/trunk/lib/Driver/ToolChains.cpp Mon Jul 13 15:21:06 2015
@@ -3652,6 +3652,65 @@ Tool *DragonFly::buildLinker() const {
return new tools::dragonfly::Linker(*this);
}
+/// Stub for CUDA toolchain. At the moment we don't have assembler or
+/// linker and need toolchain mainly to propagate device-side options
+/// to CC1.
+
+CudaToolChain::CudaToolChain(const Driver &D, const llvm::Triple &Triple,
+ const ArgList &Args)
+ : Linux(D, Triple, Args) {}
+
+void
+CudaToolChain::addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
+ llvm::opt::ArgStringList &CC1Args) const {
+ Linux::addClangTargetOptions(DriverArgs, CC1Args);
+ CC1Args.push_back("-fcuda-is-device");
+}
+
+llvm::opt::DerivedArgList *
+CudaToolChain::TranslateArgs(const llvm::opt::DerivedArgList &Args,
+ const char *BoundArch) const {
+ DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
+ const OptTable &Opts = getDriver().getOpts();
+
+ for (Arg *A : Args) {
+ if (A->getOption().matches(options::OPT_Xarch__)) {
+ // Skip this argument unless the architecture matches BoundArch
+ if (A->getValue(0) != StringRef(BoundArch))
+ continue;
+
+ unsigned Index = Args.getBaseArgs().MakeIndex(A->getValue(1));
+ unsigned Prev = Index;
+ std::unique_ptr<Arg> XarchArg(Opts.ParseOneArg(Args, Index));
+
+ // If the argument parsing failed or more than one argument was
+ // consumed, the -Xarch_ argument's parameter tried to consume
+ // extra arguments. Emit an error and ignore.
+ //
+ // We also want to disallow any options which would alter the
+ // driver behavior; that isn't going to work in our model. We
+ // use isDriverOption() as an approximation, although things
+ // like -O4 are going to slip through.
+ if (!XarchArg || Index > Prev + 1) {
+ getDriver().Diag(diag::err_drv_invalid_Xarch_argument_with_args)
+ << A->getAsString(Args);
+ continue;
+ } else if (XarchArg->getOption().hasFlag(options::DriverOption)) {
+ getDriver().Diag(diag::err_drv_invalid_Xarch_argument_isdriver)
+ << A->getAsString(Args);
+ continue;
+ }
+ XarchArg->setBaseArg(A);
+ A = XarchArg.release();
+ DAL->AddSynthesizedArg(A);
+ }
+ DAL->append(A);
+ }
+
+ DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_march_EQ), BoundArch);
+ return DAL;
+}
+
/// XCore tool chain
XCore::XCore(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
: ToolChain(D, Triple, Args) {
Modified: cfe/trunk/lib/Driver/ToolChains.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains.h?rev=242058&r1=242057&r2=242058&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/ToolChains.h (original)
+++ cfe/trunk/lib/Driver/ToolChains.h Mon Jul 13 15:21:06 2015
@@ -699,6 +699,18 @@ private:
std::string computeSysRoot() const;
};
+class LLVM_LIBRARY_VISIBILITY CudaToolChain : public Linux {
+public:
+ CudaToolChain(const Driver &D, const llvm::Triple &Triple,
+ const llvm::opt::ArgList &Args);
+
+ llvm::opt::DerivedArgList *
+ TranslateArgs(const llvm::opt::DerivedArgList &Args,
+ const char *BoundArch) const override;
+ void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
+ llvm::opt::ArgStringList &CC1Args) const override;
+};
+
class LLVM_LIBRARY_VISIBILITY Hexagon_TC : public Linux {
protected:
GCCVersion GCCLibAndIncVersion;
Modified: cfe/trunk/lib/Driver/Tools.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/Tools.cpp?rev=242058&r1=242057&r2=242058&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/Tools.cpp (original)
+++ cfe/trunk/lib/Driver/Tools.cpp Mon Jul 13 15:21:06 2015
@@ -1488,6 +1488,12 @@ static std::string getCPUName(const ArgL
return CPUName;
}
+ case llvm::Triple::nvptx:
+ case llvm::Triple::nvptx64:
+ if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
+ return A->getValue();
+ return "";
+
case llvm::Triple::ppc:
case llvm::Triple::ppc64:
case llvm::Triple::ppc64le: {
@@ -2826,8 +2832,14 @@ void Clang::ConstructJob(Compilation &C,
getToolChain().getTriple().isWindowsCygwinEnvironment();
bool IsWindowsMSVC = getToolChain().getTriple().isWindowsMSVCEnvironment();
- assert(Inputs.size() == 1 && "Unable to handle multiple inputs.");
+ // Check number of inputs for sanity. We need at least one input.
+ assert(Inputs.size() >= 1 && "Must have at least one input.");
const InputInfo &Input = Inputs[0];
+ // CUDA compilation may have multiple inputs (source file + results of
+ // device-side compilations). All other jobs are expected to have exactly one
+ // input.
+ bool IsCuda = types::isCuda(Input.getType());
+ assert((IsCuda || Inputs.size() == 1) && "Unable to handle multiple inputs.");
// Invoke ourselves in -cc1 mode.
//
@@ -4802,14 +4814,12 @@ void Clang::ConstructJob(Compilation &C,
assert(Output.isNothing() && "Invalid output.");
}
- for (const auto &II : Inputs) {
- addDashXForInput(Args, II, CmdArgs);
+ addDashXForInput(Args, Input, CmdArgs);
- if (II.isFilename())
- CmdArgs.push_back(II.getFilename());
- else
- II.getInputArg().renderAsInput(Args, CmdArgs);
- }
+ if (Input.isFilename())
+ CmdArgs.push_back(Input.getFilename());
+ else
+ Input.getInputArg().renderAsInput(Args, CmdArgs);
Args.AddAllArgs(CmdArgs, options::OPT_undef);
@@ -4847,6 +4857,16 @@ void Clang::ConstructJob(Compilation &C,
CmdArgs.push_back(SplitDwarfOut);
}
+ // Host-side cuda compilation receives device-side outputs as Inputs[1...].
+ // Include them with -fcuda-include-gpubinary.
+ if (IsCuda && Inputs.size() > 1)
+ for (InputInfoList::const_iterator it = std::next(Inputs.begin()),
+ ie = Inputs.end();
+ it != ie; ++it) {
+ CmdArgs.push_back("-fcuda-include-gpubinary");
+ CmdArgs.push_back(it->getFilename());
+ }
+
// Finally add the compile command to the compilation.
if (Args.hasArg(options::OPT__SLASH_fallback) &&
Output.getType() == types::TY_Object &&
Modified: cfe/trunk/lib/Driver/Types.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/Types.cpp?rev=242058&r1=242057&r2=242058&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/Types.cpp (original)
+++ cfe/trunk/lib/Driver/Types.cpp Mon Jul 13 15:21:06 2015
@@ -86,6 +86,7 @@ bool types::isAcceptedByClang(ID Id) {
case TY_C: case TY_PP_C:
case TY_CL:
case TY_CUDA: case TY_PP_CUDA:
+ case TY_CUDA_DEVICE:
case TY_ObjC: case TY_PP_ObjC: case TY_PP_ObjC_Alias:
case TY_CXX: case TY_PP_CXX:
case TY_ObjCXX: case TY_PP_ObjCXX: case TY_PP_ObjCXX_Alias:
@@ -122,7 +123,19 @@ bool types::isCXX(ID Id) {
case TY_ObjCXX: case TY_PP_ObjCXX: case TY_PP_ObjCXX_Alias:
case TY_CXXHeader: case TY_PP_CXXHeader:
case TY_ObjCXXHeader: case TY_PP_ObjCXXHeader:
- case TY_CUDA: case TY_PP_CUDA:
+ case TY_CUDA: case TY_PP_CUDA: case TY_CUDA_DEVICE:
+ return true;
+ }
+}
+
+bool types::isCuda(ID Id) {
+ switch (Id) {
+ default:
+ return false;
+
+ case TY_CUDA:
+ case TY_PP_CUDA:
+ case TY_CUDA_DEVICE:
return true;
}
}
@@ -206,10 +219,12 @@ void types::getCompilationPhases(ID Id,
P.push_back(phases::Compile);
P.push_back(phases::Backend);
}
- P.push_back(phases::Assemble);
+ if (Id != TY_CUDA_DEVICE)
+ P.push_back(phases::Assemble);
}
}
- if (!onlyPrecompileType(Id)) {
+
+ if (!onlyPrecompileType(Id) && Id != TY_CUDA_DEVICE) {
P.push_back(phases::Link);
}
assert(0 < P.size() && "Not enough phases in list");
Modified: cfe/trunk/lib/Frontend/CreateInvocationFromCommandLine.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/CreateInvocationFromCommandLine.cpp?rev=242058&r1=242057&r2=242058&view=diff
==============================================================================
--- cfe/trunk/lib/Frontend/CreateInvocationFromCommandLine.cpp (original)
+++ cfe/trunk/lib/Frontend/CreateInvocationFromCommandLine.cpp Mon Jul 13 15:21:06 2015
@@ -15,6 +15,7 @@
#include "clang/Basic/DiagnosticOptions.h"
#include "clang/Driver/Compilation.h"
#include "clang/Driver/Driver.h"
+#include "clang/Driver/Action.h"
#include "clang/Driver/Options.h"
#include "clang/Driver/Tool.h"
#include "clang/Frontend/CompilerInstance.h"
@@ -61,9 +62,21 @@ clang::createInvocationFromCommandLine(A
}
// We expect to get back exactly one command job, if we didn't something
- // failed.
+ // failed. CUDA compilation is an exception as it creates multiple jobs. If
+ // that's the case, we proceed with the first job. If caller needs particular
+ // CUDA job, it should be controlled via --cuda-{host|device}-only option
+ // passed to the driver.
const driver::JobList &Jobs = C->getJobs();
- if (Jobs.size() != 1 || !isa<driver::Command>(*Jobs.begin())) {
+ bool CudaCompilation = false;
+ if (Jobs.size() > 1) {
+ for (auto &A : C->getActions())
+ if (isa<driver::CudaDeviceAction>(A)) {
+ CudaCompilation = true;
+ break;
+ }
+ }
+ if (Jobs.size() == 0 || !isa<driver::Command>(*Jobs.begin()) ||
+ (Jobs.size() > 1 && !CudaCompilation)) {
SmallString<256> Msg;
llvm::raw_svector_ostream OS(Msg);
Jobs.Print(OS, "; ", true);
Added: cfe/trunk/test/Driver/cuda-options.cu
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/cuda-options.cu?rev=242058&view=auto
==============================================================================
--- cfe/trunk/test/Driver/cuda-options.cu (added)
+++ cfe/trunk/test/Driver/cuda-options.cu Mon Jul 13 15:21:06 2015
@@ -0,0 +1,108 @@
+// Tests CUDA compilation pipeline construction in Driver.
+
+// Simple compilation case:
+// RUN: %clang -### -c %s 2>&1 \
+// Compile device-side to PTX assembly and make sure we use it on the host side.
+// RUN: | FileCheck -check-prefix CUDA-D1 \
+// Then compile host side and incorporate device code.
+// RUN: -check-prefix CUDA-H -check-prefix CUDA-H-I1 \
+// Make sure we don't link anything.
+// RUN: -check-prefix CUDA-NL %s
+
+// Typical compilation + link case:
+// RUN: %clang -### %s 2>&1 \
+// Compile device-side to PTX assembly and make sure we use it on the host side
+// RUN: | FileCheck -check-prefix CUDA-D1 \
+// Then compile host side and incorporate device code.
+// RUN: -check-prefix CUDA-H -check-prefix CUDA-H-I1 \
+// Then link things.
+// RUN: -check-prefix CUDA-L %s
+
+// Verify that -cuda-no-device disables device-side compilation and linking
+// RUN: %clang -### --cuda-host-only %s 2>&1 \
+// Make sure we didn't run device-side compilation.
+// RUN: | FileCheck -check-prefix CUDA-ND \
+// Then compile host side and make sure we don't attempt to incorporate GPU code.
+// RUN: -check-prefix CUDA-H -check-prefix CUDA-H-NI \
+// Make sure we don't link anything.
+// RUN: -check-prefix CUDA-NL %s
+
+// Verify that -cuda-no-host disables host-side compilation and linking
+// RUN: %clang -### --cuda-device-only %s 2>&1 \
+// Compile device-side to PTX assembly
+// RUN: | FileCheck -check-prefix CUDA-D1 \
+// Make sure there are no host cmpilation or linking.
+// RUN: -check-prefix CUDA-NH -check-prefix CUDA-NL %s
+
+// Verify that with -S we compile host and device sides to assembly
+// and incorporate device code on the host side.
+// RUN: %clang -### -S -c %s 2>&1 \
+// Compile device-side to PTX assembly
+// RUN: | FileCheck -check-prefix CUDA-D1 \
+// Then compile host side and incorporate GPU code.
+// RUN: -check-prefix CUDA-H -check-prefix CUDA-H-I1 \
+// Make sure we don't link anything.
+// RUN: -check-prefix CUDA-NL %s
+
+// Verify that --cuda-gpu-arch option passes correct GPU
+// archtecture info to device compilation.
+// RUN: %clang -### --cuda-gpu-arch=sm_35 -c %s 2>&1 \
+// Compile device-side to PTX assembly.
+// RUN: | FileCheck -check-prefix CUDA-D1 -check-prefix CUDA-D1-SM35 \
+// Then compile host side and incorporate GPU code.
+// RUN: -check-prefix CUDA-H -check-prefix CUDA-H-I1 \
+// Make sure we don't link anything.
+// RUN: -check-prefix CUDA-NL %s
+
+// Verify that there is device-side compilation per --cuda-gpu-arch args
+// and that all results are included on the host side.
+// RUN: %clang -### --cuda-gpu-arch=sm_35 --cuda-gpu-arch=sm_30 -c %s 2>&1 \
+// Compile both device-sides to PTX assembly
+// RUN: | FileCheck \
+// RUN: -check-prefix CUDA-D1 -check-prefix CUDA-D1-SM35 \
+// RUN: -check-prefix CUDA-D2 -check-prefix CUDA-D2-SM30 \
+// Then compile host side and incorporate both device-side outputs
+// RUN: -check-prefix CUDA-H -check-prefix CUDA-H-I1 -check-prefix CUDA-H-I2 \
+// Make sure we don't link anything.
+// RUN: -check-prefix CUDA-NL %s
+
+// Match device-side compilation
+// CUDA-D1: "-cc1" "-triple" "nvptx{{64?}}-nvidia-cuda"
+// CUDA-D1-SAME: "-fcuda-is-device"
+// CUDA-D1-SM35-SAME: "-target-cpu" "sm_35"
+// CUDA-D1-SAME: "-o" "[[GPUBINARY1:[^"]*]]"
+// CUDA-D1-SAME: "-x" "cuda"
+
+// Match anothe device-side compilation
+// CUDA-D2: "-cc1" "-triple" "nvptx{{64?}}-nvidia-cuda"
+// CUDA-D2-SAME: "-fcuda-is-device"
+// CUDA-D2-SM30-SAME: "-target-cpu" "sm_30"
+// CUDA-D2-SAME: "-o" "[[GPUBINARY2:[^"]*]]"
+// CUDA-D2-SAME: "-x" "cuda"
+
+// Match no device-side compilation
+// CUDA-ND-NOT: "-cc1" "-triple" "nvptx{{64?}}-nvidia-cuda"
+// CUDA-ND-SAME-NOT: "-fcuda-is-device"
+
+// Match host-side compilation
+// CUDA-H: "-cc1" "-triple"
+// CUDA-H-SAME-NOT: "nvptx{{64?}}-nvidia-cuda"
+// CUDA-H-SAME-NOT: "-fcuda-is-device"
+// CUDA-H-SAME: "-o" "[[HOSTOBJ:[^"]*]]"
+// CUDA-H-SAME: "-x" "cuda"
+// CUDA-H-I1-SAME: "-fcuda-include-gpubinary" "[[GPUBINARY1]]"
+// CUDA-H-I2-SAME: "-fcuda-include-gpubinary" "[[GPUBINARY2]]"
+
+// Match no GPU code inclusion.
+// CUDA-H-NI-NOT: "-fcuda-include-gpubinary"
+
+// Match no CUDA compilation
+// CUDA-NH-NOT: "-cc1" "-triple"
+// CUDA-NH-SAME-NOT: "-x" "cuda"
+
+// Match linker
+// CUDA-L: "{{.*}}ld{{(.exe)?}}"
+// CUDA-L-SAME: "[[HOSTOBJ]]"
+
+// Match no linker
+// CUDA-NL-NOT: "{{.*}}ld{{(.exe)?}}"
Modified: cfe/trunk/test/Index/attributes-cuda.cu
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Index/attributes-cuda.cu?rev=242058&r1=242057&r2=242058&view=diff
==============================================================================
--- cfe/trunk/test/Index/attributes-cuda.cu (original)
+++ cfe/trunk/test/Index/attributes-cuda.cu Mon Jul 13 15:21:06 2015
@@ -1,4 +1,6 @@
// RUN: c-index-test -test-load-source all -x cuda %s | FileCheck %s
+// RUN: c-index-test -test-load-source all -x cuda --cuda-host-only %s | FileCheck %s
+// RUN: c-index-test -test-load-source all -x cuda --cuda-device-only %s | FileCheck %s
__attribute__((device)) void f_device();
__attribute__((global)) void f_global();
@@ -6,13 +8,13 @@ __attribute__((constant)) int* g_constan
__attribute__((shared)) float *g_shared;
__attribute__((host)) void f_host();
-// CHECK: attributes-cuda.cu:3:30: FunctionDecl=f_device:3:30
-// CHECK-NEXT: attributes-cuda.cu:3:16: attribute(device)
-// CHECK: attributes-cuda.cu:4:30: FunctionDecl=f_global:4:30
-// CHECK-NEXT: attributes-cuda.cu:4:16: attribute(global)
-// CHECK: attributes-cuda.cu:5:32: VarDecl=g_constant:5:32 (Definition)
-// CHECK-NEXT: attributes-cuda.cu:5:16: attribute(constant)
-// CHECK: attributes-cuda.cu:6:32: VarDecl=g_shared:6:32 (Definition)
-// CHECK-NEXT: attributes-cuda.cu:6:16: attribute(shared)
-// CHECK: attributes-cuda.cu:7:28: FunctionDecl=f_host:7:28
-// CHECK-NEXT: attributes-cuda.cu:7:16: attribute(host)
+// CHECK: attributes-cuda.cu:5:30: FunctionDecl=f_device:5:30
+// CHECK-NEXT: attributes-cuda.cu:5:16: attribute(device)
+// CHECK: attributes-cuda.cu:6:30: FunctionDecl=f_global:6:30
+// CHECK-NEXT: attributes-cuda.cu:6:16: attribute(global)
+// CHECK: attributes-cuda.cu:7:32: VarDecl=g_constant:7:32 (Definition)
+// CHECK-NEXT: attributes-cuda.cu:7:16: attribute(constant)
+// CHECK: attributes-cuda.cu:8:32: VarDecl=g_shared:8:32 (Definition)
+// CHECK-NEXT: attributes-cuda.cu:8:16: attribute(shared)
+// CHECK: attributes-cuda.cu:9:28: FunctionDecl=f_host:9:28
+// CHECK-NEXT: attributes-cuda.cu:9:16: attribute(host)
Added: cfe/trunk/test/Index/index-file.cu
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Index/index-file.cu?rev=242058&view=auto
==============================================================================
--- cfe/trunk/test/Index/index-file.cu (added)
+++ cfe/trunk/test/Index/index-file.cu Mon Jul 13 15:21:06 2015
@@ -0,0 +1,9 @@
+// Make sure we can process CUDA file even if driver creates multiple jobs
+// RUN: c-index-test -test-load-source all %s | FileCheck %s -check-prefix=CHECK-ANY
+// Make sure we process correct side of cuda compilation
+// RUN: c-index-test -test-load-source all --cuda-host-only %s | FileCheck %s -check-prefix=CHECK-HOST
+// RUN: c-index-test -test-load-source all --cuda-device-only %s | FileCheck %s -check-prefix=CHECK-DEVICE
+
+// CHECK-ANY: macro definition=__cplusplus
+// CHECK-HOST-NOT: macro definition=__CUDA_ARCH__
+// CHECK-DEVICE: macro definition=__CUDA_ARCH__
Modified: cfe/trunk/tools/libclang/CIndex.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/tools/libclang/CIndex.cpp?rev=242058&r1=242057&r2=242058&view=diff
==============================================================================
--- cfe/trunk/tools/libclang/CIndex.cpp (original)
+++ cfe/trunk/tools/libclang/CIndex.cpp Mon Jul 13 15:21:06 2015
@@ -3102,6 +3102,12 @@ static void clang_parseTranslationUnit_I
/*AllowPCHWithCompilerErrors=*/true, SkipFunctionBodies,
/*UserFilesAreVolatile=*/true, ForSerialization, &ErrUnit));
+ // Early failures in LoadFromCommandLine may return with ErrUnit unset.
+ if (!Unit && !ErrUnit) {
+ PTUI->result = CXError_ASTReadError;
+ return;
+ }
+
if (NumErrors != Diags->getClient()->getNumErrors()) {
// Make sure to check that 'Unit' is non-NULL.
if (CXXIdx->getDisplayDiagnostics())
Modified: cfe/trunk/unittests/ASTMatchers/ASTMatchersTest.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/unittests/ASTMatchers/ASTMatchersTest.h?rev=242058&r1=242057&r2=242058&view=diff
==============================================================================
--- cfe/trunk/unittests/ASTMatchers/ASTMatchersTest.h (original)
+++ cfe/trunk/unittests/ASTMatchers/ASTMatchersTest.h Mon Jul 13 15:21:06 2015
@@ -164,6 +164,7 @@ testing::AssertionResult matchesConditio
std::vector<std::string> Args;
Args.push_back("-xcuda");
Args.push_back("-fno-ms-extensions");
+ Args.push_back("--cuda-host-only");
Args.push_back(CompileArg);
if (!runToolOnCodeWithArgs(Factory->create(),
CudaHeader + Code, Args)) {
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