Clean up the JITResolver stub/callsite<->function maps.

[oota-llvm.git] / lib / ExecutionEngine / JIT / TargetSelect.cpp

diff --git a/lib/ExecutionEngine/JIT/TargetSelect.cpp b/lib/ExecutionEngine/JIT/TargetSelect.cpp
index 598b867a3f942967c6a83228eb427e8f00410033..8bed33bb7d42c9dc7bc6d758d5200145b8927884 100644 (file)
--- a/lib/ExecutionEngine/JIT/TargetSelect.cpp
+++ b/lib/ExecutionEngine/JIT/TargetSelect.cpp
@@ -16,15 +16,18 @@
 #include "JIT.h"
 #include "llvm/Module.h"
 #include "llvm/ModuleProvider.h"
+#include "llvm/ADT/Triple.h"
 #include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Streams.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/System/Host.h"
 #include "llvm/Target/SubtargetFeature.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetRegistry.h"
 using namespace llvm;
 
 static cl::opt<std::string>
-MArch("march", cl::desc("Architecture to generate assembly for (see --version)"));
+MArch("march",
+      cl::desc("Architecture to generate assembly for (see --version)"));
 
 static cl::opt<std::string>
 MCPU("mcpu",
@@ -38,23 +41,18 @@ MAttrs("mattr",
   cl::desc("Target specific attributes (-mattr=help for details)"),
   cl::value_desc("a1,+a2,-a3,..."));
 
-/// createInternal - Create an return a new JIT compiler if there is one
-/// available for the current target.  Otherwise, return null.
-///
-ExecutionEngine *JIT::createJIT(ModuleProvider *MP, std::string *ErrorStr,
-                                JITMemoryManager *JMM,
-                                CodeGenOpt::Level OptLevel,
-                                bool AllocateGVsWithCode) {
+/// selectTarget - Pick a target either via -march or by guessing the native
+/// arch.  Add any CPU features specified via -mcpu or -mattr.
+TargetMachine *JIT::selectTarget(ModuleProvider *MP, std::string *ErrorStr) {
+  Module &Mod = *MP->getModule();
+
+  Triple TheTriple(Mod.getTargetTriple());
+  if (TheTriple.getTriple().empty())
+    TheTriple.setTriple(sys::getHostTriple());
+
+  // Adjust the triple to match what the user requested.
   const Target *TheTarget = 0;
-  if (MArch.empty()) {
-    std::string Error;
-    TheTarget = TargetRegistry::getClosestTargetForJIT(Error);
-    if (TheTarget == 0) {
-      if (ErrorStr)
-        *ErrorStr = Error;
-      return 0;
-    }
-  } else {
+  if (!MArch.empty()) {
     for (TargetRegistry::iterator it = TargetRegistry::begin(),
            ie = TargetRegistry::end(); it != ie; ++it) {
       if (MArch == it->getName()) {
@@ -62,18 +60,32 @@ ExecutionEngine *JIT::createJIT(ModuleProvider *MP, std::string *ErrorStr,
         break;
       }
     }
-    
+
+    if (!TheTarget) {
+      *ErrorStr = "No available targets are compatible with this -march, "
+        "see -version for the available targets.\n";
+      return 0;
+    }
+
+    // Adjust the triple to match (if known), otherwise stick with the
+    // module/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 (ErrorStr)
-        *ErrorStr = std::string("invalid target '" + MArch + "'.\n");
+        *ErrorStr = Error;
       return 0;
-    }        
+    }
+  }
 
-    if (TheTarget->getJITMatchQuality() == 0) {
-      cerr << "WARNING: This target JIT is not designed for the host you are"
+  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
@@ -88,14 +100,7 @@ ExecutionEngine *JIT::createJIT(ModuleProvider *MP, std::string *ErrorStr,
 
   // Allocate a target...
   TargetMachine *Target = 
-    TheTarget->createTargetMachine(*MP->getModule(), FeaturesStr);
+    TheTarget->createTargetMachine(TheTriple.getTriple(), FeaturesStr);
   assert(Target && "Could not allocate target machine!");
-
-  // If the target supports JIT code generation, return a new JIT now.
-  if (TargetJITInfo *TJ = Target->getJITInfo())
-    return new JIT(MP, *Target, *TJ, JMM, OptLevel, AllocateGVsWithCode);
-
-  if (ErrorStr)
-    *ErrorStr = "target does not support JIT code generation";
-  return 0;
+  return Target;
 }