//
//===----------------------------------------------------------------------===//
//
-// This just asks the TargetRegistry for the appropriate JIT to use, and allows
-// the user to specify a specific one on the commandline with -march=x. Clients
-// should initialize targets prior to calling createJIT.
+// This just asks the TargetRegistry for the appropriate target to use, and
+// allows the user to specify a specific one on the commandline with -march=x,
+// -mcpu=y, and -mattr=a,-b,+c. Clients should initialize targets prior to
+// calling selectTarget().
//
//===----------------------------------------------------------------------===//
#include "llvm/ExecutionEngine/ExecutionEngine.h"
-#include "llvm/Module.h"
#include "llvm/ADT/Triple.h"
+#include "llvm/IR/Module.h"
#include "llvm/MC/SubtargetFeature.h"
-#include "llvm/Target/TargetMachine.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/TargetRegistry.h"
-#include "llvm/Support/raw_ostream.h"
+#include "llvm/Target/TargetMachine.h"
+
using namespace llvm;
+TargetMachine *EngineBuilder::selectTarget() {
+ Triple TT;
+
+ // MCJIT can generate code for remote targets, but the old JIT and Interpreter
+ // must use the host architecture.
+ if (WhichEngine != EngineKind::Interpreter && M)
+ TT.setTriple(M->getTargetTriple());
+
+ return selectTarget(TT, MArch, MCPU, MAttrs);
+}
+
/// selectTarget - Pick a target either via -march or by guessing the native
/// arch. Add any CPU features specified via -mcpu or -mattr.
-TargetMachine *EngineBuilder::selectTarget(Module *Mod,
+TargetMachine *EngineBuilder::selectTarget(const Triple &TargetTriple,
StringRef MArch,
StringRef MCPU,
- const SmallVectorImpl<std::string>& MAttrs,
- Reloc::Model RM,
- CodeModel::Model CM,
- CodeGenOpt::Level OL,
- std::string *ErrorStr) {
- Triple TheTriple(Mod->getTargetTriple());
+ const SmallVectorImpl<std::string>& MAttrs) {
+ Triple TheTriple(TargetTriple);
if (TheTriple.getTriple().empty())
- TheTriple.setTriple(sys::getDefaultTargetTriple());
+ TheTriple.setTriple(sys::getProcessTriple());
// Adjust the triple to match what the user requested.
- const Target *TheTarget = 0;
+ const Target *TheTarget = nullptr;
if (!MArch.empty()) {
- for (TargetRegistry::iterator it = TargetRegistry::begin(),
- ie = TargetRegistry::end(); it != ie; ++it) {
- if (MArch == it->getName()) {
- TheTarget = &*it;
- break;
- }
- }
+ auto I = std::find_if(
+ TargetRegistry::targets().begin(), TargetRegistry::targets().end(),
+ [&](const Target &T) { return MArch == T.getName(); });
- if (!TheTarget) {
- *ErrorStr = "No available targets are compatible with this -march, "
- "see -version for the available targets.\n";
- return 0;
+ if (I == TargetRegistry::targets().end()) {
+ if (ErrorStr)
+ *ErrorStr = "No available targets are compatible with this -march, "
+ "see -version for the available targets.\n";
+ return nullptr;
}
+ TheTarget = &*I;
+
// Adjust the triple to match (if known), otherwise stick with the
- // module/host triple.
+ // requested/host triple.
Triple::ArchType Type = Triple::getArchTypeForLLVMName(MArch);
if (Type != Triple::UnknownArch)
TheTriple.setArch(Type);
} else {
std::string Error;
TheTarget = TargetRegistry::lookupTarget(TheTriple.getTriple(), Error);
- if (TheTarget == 0) {
+ if (!TheTarget) {
if (ErrorStr)
*ErrorStr = Error;
- return 0;
+ return nullptr;
}
}
- if (!TheTarget->hasJIT()) {
- errs() << "WARNING: This target JIT is not designed for the host you are"
- << " running. If bad things happen, please choose a different "
- << "-march switch.\n";
- }
-
// Package up features to be passed to target/subtarget
std::string FeaturesStr;
if (!MAttrs.empty()) {
FeaturesStr = Features.getString();
}
+ // FIXME: non-iOS ARM FastISel is broken with MCJIT.
+ if (TheTriple.getArch() == Triple::arm &&
+ !TheTriple.isiOS() &&
+ OptLevel == CodeGenOpt::None) {
+ OptLevel = CodeGenOpt::Less;
+ }
+
// Allocate a target...
TargetMachine *Target = TheTarget->createTargetMachine(TheTriple.getTriple(),
MCPU, FeaturesStr,
- RM, CM, OL);
+ Options,
+ RelocModel, CMModel,
+ OptLevel);
assert(Target && "Could not allocate target machine!");
return Target;
}