//
//===----------------------------------------------------------------------===//
-#include "llvm/Target/TargetRegistry.h"
-#include "llvm/System/Host.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/raw_ostream.h"
#include <cassert>
+#include <vector>
using namespace llvm;
// Clients are responsible for avoid race conditions in registration.
-static Target *FirstTarget = 0;
+static Target *FirstTarget = nullptr;
-TargetRegistry::iterator TargetRegistry::begin() {
- return iterator(FirstTarget);
+iterator_range<TargetRegistry::iterator> TargetRegistry::targets() {
+ return make_range(iterator(FirstTarget), iterator());
}
-const Target *
-TargetRegistry::getClosestStaticTargetForTriple(const std::string &TT,
- std::string &Error) {
- // Provide special warning when no targets are initialized.
- if (begin() == end()) {
- Error = "Unable to find target for this triple (no targets are registered)";
- return 0;
- }
- const Target *Best = 0, *EquallyBest = 0;
- unsigned BestQuality = 0;
- for (iterator it = begin(), ie = end(); it != ie; ++it) {
- if (unsigned Qual = it->TripleMatchQualityFn(TT)) {
- if (!Best || Qual > BestQuality) {
- Best = &*it;
- EquallyBest = 0;
- BestQuality = Qual;
- } else if (Qual == BestQuality)
- EquallyBest = &*it;
+const Target *TargetRegistry::lookupTarget(const std::string &ArchName,
+ Triple &TheTriple,
+ std::string &Error) {
+ // Allocate target machine. First, check whether the user has explicitly
+ // specified an architecture to compile for. If so we have to look it up by
+ // name, because it might be a backend that has no mapping to a target triple.
+ const Target *TheTarget = nullptr;
+ if (!ArchName.empty()) {
+ auto I =
+ std::find_if(targets().begin(), targets().end(),
+ [&](const Target &T) { return ArchName == T.getName(); });
+
+ if (I == targets().end()) {
+ Error = "error: invalid target '" + ArchName + "'.\n";
+ return nullptr;
}
- }
-
- if (!Best) {
- Error = "No available targets are compatible with this triple";
- return 0;
- }
-
- // Otherwise, take the best target, but make sure we don't have two equally
- // good best targets.
- if (EquallyBest) {
- Error = std::string("Cannot choose between targets \"") +
- Best->Name + "\" and \"" + EquallyBest->Name + "\"";
- return 0;
- }
-
- return Best;
-}
-const Target *
-TargetRegistry::getClosestStaticTargetForModule(const Module &M,
- std::string &Error) {
- // Provide special warning when no targets are initialized.
- if (begin() == end()) {
- Error = "Unable to find target for this module (no targets are registered)";
- return 0;
- }
-
- const Target *Best = 0, *EquallyBest = 0;
- unsigned BestQuality = 0;
- for (iterator it = begin(), ie = end(); it != ie; ++it) {
- if (unsigned Qual = it->ModuleMatchQualityFn(M)) {
- if (!Best || Qual > BestQuality) {
- Best = &*it;
- EquallyBest = 0;
- BestQuality = Qual;
- } else if (Qual == BestQuality)
- EquallyBest = &*it;
+ TheTarget = &*I;
+
+ // Adjust the triple to match (if known), otherwise stick with the
+ // given triple.
+ Triple::ArchType Type = Triple::getArchTypeForLLVMName(ArchName);
+ if (Type != Triple::UnknownArch)
+ TheTriple.setArch(Type);
+ } else {
+ // Get the target specific parser.
+ std::string TempError;
+ TheTarget = TargetRegistry::lookupTarget(TheTriple.getTriple(), TempError);
+ if (!TheTarget) {
+ Error = ": error: unable to get target for '"
+ + TheTriple.getTriple()
+ + "', see --version and --triple.\n";
+ return nullptr;
}
}
- // FIXME: This is a hack to ignore super weak matches like msil, etc. and look
- // by host instead. They will be found again via the triple.
- if (Best && BestQuality == 1)
- Best = EquallyBest = 0;
-
- // If that failed, try looking up the host triple.
- if (!Best)
- Best = getClosestStaticTargetForTriple(sys::getHostTriple(), Error);
-
- if (!Best) {
- Error = "No available targets are compatible with this module";
- return Best;
- }
-
- // Otherwise, take the best target, but make sure we don't have two equally
- // good best targets.
- if (EquallyBest) {
- Error = std::string("Cannot choose between targets \"") +
- Best->Name + "\" and \"" + EquallyBest->Name + "\"";
- return 0;
- }
-
- return Best;
+ return TheTarget;
}
-const Target *
-TargetRegistry::getClosestTargetForJIT(std::string &Error) {
- std::string Triple = sys::getHostTriple();
-
+const Target *TargetRegistry::lookupTarget(const std::string &TT,
+ std::string &Error) {
// Provide special warning when no targets are initialized.
- if (begin() == end()) {
- Error = "No JIT is available for this host (no targets are registered)";
- return 0;
+ if (targets().begin() == targets().end()) {
+ Error = "Unable to find target for this triple (no targets are registered)";
+ return nullptr;
}
-
- const Target *Best = 0, *EquallyBest = 0;
- unsigned BestQuality = 0;
- for (iterator it = begin(), ie = end(); it != ie; ++it) {
- if (!it->hasJIT())
- continue;
-
- if (unsigned Qual = it->TripleMatchQualityFn(Triple)) {
- if (!Best || Qual > BestQuality) {
- Best = &*it;
- EquallyBest = 0;
- BestQuality = Qual;
- } else if (Qual == BestQuality)
- EquallyBest = &*it;
- }
+ Triple::ArchType Arch = Triple(TT).getArch();
+ auto ArchMatch = [&](const Target &T) { return T.ArchMatchFn(Arch); };
+ auto I = std::find_if(targets().begin(), targets().end(), ArchMatch);
+
+ if (I == targets().end()) {
+ Error = "No available targets are compatible with this triple, "
+ "see -version for the available targets.";
+ return nullptr;
}
- if (!Best) {
- Error = "No JIT is available for this host";
- return 0;
+ auto J = std::find_if(std::next(I), targets().end(), ArchMatch);
+ if (J != targets().end()) {
+ Error = std::string("Cannot choose between targets \"") + I->Name +
+ "\" and \"" + J->Name + "\"";
+ return nullptr;
}
- // Return the best, ignoring ties.
- return Best;
+ return &*I;
}
void TargetRegistry::RegisterTarget(Target &T,
const char *Name,
const char *ShortDesc,
- Target::TripleMatchQualityFnTy TQualityFn,
- Target::ModuleMatchQualityFnTy MQualityFn,
+ Target::ArchMatchFnTy ArchMatchFn,
bool HasJIT) {
- assert(Name && ShortDesc && TQualityFn && MQualityFn &&
+ assert(Name && ShortDesc && ArchMatchFn &&
"Missing required target information!");
// Check if this target has already been initialized, we allow this as a
T.Name = Name;
T.ShortDesc = ShortDesc;
- T.TripleMatchQualityFn = TQualityFn;
- T.ModuleMatchQualityFn = MQualityFn;
+ T.ArchMatchFn = ArchMatchFn;
T.HasJIT = HasJIT;
}
+static int TargetArraySortFn(const std::pair<StringRef, const Target *> *LHS,
+ const std::pair<StringRef, const Target *> *RHS) {
+ return LHS->first.compare(RHS->first);
+}
+
+void TargetRegistry::printRegisteredTargetsForVersion() {
+ std::vector<std::pair<StringRef, const Target*> > Targets;
+ size_t Width = 0;
+ for (const auto &T : TargetRegistry::targets()) {
+ Targets.push_back(std::make_pair(T.getName(), &T));
+ Width = std::max(Width, Targets.back().first.size());
+ }
+ array_pod_sort(Targets.begin(), Targets.end(), TargetArraySortFn);
+
+ raw_ostream &OS = outs();
+ OS << " Registered Targets:\n";
+ for (unsigned i = 0, e = Targets.size(); i != e; ++i) {
+ OS << " " << Targets[i].first;
+ OS.indent(Width - Targets[i].first.size()) << " - "
+ << Targets[i].second->getShortDescription() << '\n';
+ }
+ if (Targets.empty())
+ OS << " (none)\n";
+}
projects / oota-llvm.git / blobdiff