//
//===----------------------------------------------------------------------===//
-#include "llvm/Target/TargetRegistry.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/Host.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;
-const Target *
-TargetRegistry::getClosestStaticTargetForTriple(const std::string &TT,
- std::string &Error) {
- Target *Best = 0, *EquallyBest = 0;
- unsigned BestQuality = 0;
- // FIXME: Use iterator.
- for (Target *i = FirstTarget; i; i = i->Next) {
- if (unsigned Qual = i->TripleMatchQualityFn(TT)) {
- if (!Best || Qual > BestQuality) {
- Best = i;
- EquallyBest = 0;
- BestQuality = Qual;
- } else if (Qual == BestQuality)
- EquallyBest = i;
- }
- }
-
- if (!Best) {
- Error = "No available targets are compatible with this module";
- return 0;
- }
+TargetRegistry::iterator TargetRegistry::begin() {
+ return iterator(FirstTarget);
+}
- // 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 + "\"";
+const Target *TargetRegistry::lookupTarget(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;
}
-
- return Best;
-}
-
-const Target *
-TargetRegistry::getClosestStaticTargetForModule(const Module &M,
- std::string &Error) {
- Target *Best = 0, *EquallyBest = 0;
+ const Target *Best = 0, *EquallyBest = 0;
unsigned BestQuality = 0;
- // FIXME: Use iterator.
- for (Target *i = FirstTarget; i; i = i->Next) {
- if (unsigned Qual = i->ModuleMatchQualityFn(M)) {
+ for (iterator it = begin(), ie = end(); it != ie; ++it) {
+ if (unsigned Qual = it->TripleMatchQualityFn(TT)) {
if (!Best || Qual > BestQuality) {
- Best = i;
+ Best = &*it;
EquallyBest = 0;
BestQuality = Qual;
} else if (Qual == BestQuality)
- EquallyBest = i;
+ EquallyBest = &*it;
}
}
if (!Best) {
- Error = "No available targets are compatible with this module";
+ Error = "No available targets are compatible with this triple, "
+ "see -version for the available targets.";
return 0;
}
return Best;
}
-const Target *
-TargetRegistry::getClosestTargetForJIT(std::string &Error) {
- Target *Best = 0, *EquallyBest = 0;
- unsigned BestQuality = 0;
- // FIXME: Use iterator.
- for (Target *i = FirstTarget; i; i = i->Next) {
- if (unsigned Qual = i->JITMatchQualityFn()) {
- if (!Best || Qual > BestQuality) {
- Best = i;
- EquallyBest = 0;
- BestQuality = Qual;
- } else if (Qual == BestQuality)
- EquallyBest = i;
- }
- }
-
- if (!Best) {
- Error = "No JIT is available for this host";
- return 0;
- }
-
- // Return the best, ignoring ties.
- return Best;
-}
-
void TargetRegistry::RegisterTarget(Target &T,
const char *Name,
const char *ShortDesc,
Target::TripleMatchQualityFnTy TQualityFn,
- Target::ModuleMatchQualityFnTy MQualityFn,
- Target::JITMatchQualityFnTy JITQualityFn) {
- // Note that we don't require the constructor functions already be defined, in
- // case a module happens to initialize the optional functionality before the
- // target.
- assert(!T.Next && !T.Name && !T.ShortDesc && !T.TripleMatchQualityFn &&
- !T.ModuleMatchQualityFn && !T.JITMatchQualityFn &&
- "This Target already registered!");
-
- assert(Name && ShortDesc && TQualityFn && MQualityFn && JITQualityFn &&
+ bool HasJIT) {
+ assert(Name && ShortDesc && TQualityFn &&
"Missing required target information!");
+
+ // Check if this target has already been initialized, we allow this as a
+ // convenience to some clients.
+ if (T.Name)
+ return;
// Add to the list of targets.
T.Next = FirstTarget;
T.Name = Name;
T.ShortDesc = ShortDesc;
T.TripleMatchQualityFn = TQualityFn;
- T.ModuleMatchQualityFn = MQualityFn;
- T.JITMatchQualityFn = JITQualityFn;
+ T.HasJIT = HasJIT;
+}
+
+const Target *TargetRegistry::getClosestTargetForJIT(std::string &Error) {
+ const Target *TheTarget = lookupTarget(sys::getDefaultTargetTriple(), Error);
+
+ if (TheTarget && !TheTarget->hasJIT()) {
+ Error = "No JIT compatible target available for this host";
+ return 0;
+ }
+
+ return TheTarget;
+}
+
+static int TargetArraySortFn(const void *LHS, const void *RHS) {
+ typedef std::pair<StringRef, const Target*> pair_ty;
+ return ((const pair_ty*)LHS)->first.compare(((const pair_ty*)RHS)->first);
}
+void TargetRegistry::printRegisteredTargetsForVersion() {
+ std::vector<std::pair<StringRef, const Target*> > Targets;
+ size_t Width = 0;
+ for (TargetRegistry::iterator I = TargetRegistry::begin(),
+ E = TargetRegistry::end();
+ I != E; ++I) {
+ Targets.push_back(std::make_pair(I->getName(), &*I));
+ 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";
+}
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