ExecutionEngine: refactor interface

The OptLevel is now redundant with the TargetMachine*.
And selectTarget() isn't really JIT-specific and could probably
get refactored into one of the lower level libraries.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146355 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/ExecutionEngine/ExecutionEngine.h

@@ -42,6 +42,7 @@ class MachineCodeInfo;
 class Module;
 class MutexGuard;
 class TargetData;
+class Triple;
 class Type;
 
 /// \brief Helper class for helping synchronize access to the global address map
@@ -133,14 +134,12 @@ protected:
     Module *M,
     std::string *ErrorStr,
     JITMemoryManager *JMM,
-    CodeGenOpt::Level OptLevel,
     bool GVsWithCode,
     TargetMachine *TM);
   static ExecutionEngine *(*MCJITCtor)(
     Module *M,
     std::string *ErrorStr,
     JITMemoryManager *JMM,
-    CodeGenOpt::Level OptLevel,
     bool GVsWithCode,
     TargetMachine *TM);
   static ExecutionEngine *(*InterpCtor)(Module *M, std::string *ErrorStr);
@@ -584,7 +583,7 @@ public:
 
   /// selectTarget - Pick a target either via -march or by guessing the native
   /// arch.  Add any CPU features specified via -mcpu or -mattr.
-  static TargetMachine *selectTarget(Module *M,
+  static TargetMachine *selectTarget(const Triple &TargetTriple,
                                      StringRef MArch,
                                      StringRef MCPU,
                                      const SmallVectorImpl<std::string>& MAttrs,

lib/ExecutionEngine/ExecutionEngine.cpp

@@ -28,6 +28,7 @@
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Support/DynamicLibrary.h"
 #include "llvm/Support/Host.h"
+#include "llvm/Support/TargetRegistry.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetMachine.h"
 #include <cmath>
@@ -41,14 +42,12 @@ ExecutionEngine *(*ExecutionEngine::JITCtor)(
   Module *M,
   std::string *ErrorStr,
   JITMemoryManager *JMM,
-  CodeGenOpt::Level OptLevel,
   bool GVsWithCode,
   TargetMachine *TM) = 0;
 ExecutionEngine *(*ExecutionEngine::MCJITCtor)(
   Module *M,
   std::string *ErrorStr,
   JITMemoryManager *JMM,
-  CodeGenOpt::Level OptLevel,
   bool GVsWithCode,
   TargetMachine *TM) = 0;
 ExecutionEngine *(*ExecutionEngine::InterpCtor)(Module *M,
@@ -436,13 +435,14 @@ ExecutionEngine *ExecutionEngine::createJIT(Module *M,
   StringRef MCPU = "";
   SmallVector<std::string, 1> MAttrs;
 
+  Triple TT(M->getTargetTriple());
   // TODO: permit custom TargetOptions here
   TargetMachine *TM =
-    EngineBuilder::selectTarget(M, MArch, MCPU, MAttrs, TargetOptions(), RM,
+    EngineBuilder::selectTarget(TT, MArch, MCPU, MAttrs, TargetOptions(), RM,
                                 CMM, OL, ErrorStr);
   if (!TM || (ErrorStr && ErrorStr->length() > 0)) return 0;
 
-  return ExecutionEngine::JITCtor(M, ErrorStr, JMM, OL, GVsWithCode, TM);
+  return ExecutionEngine::JITCtor(M, ErrorStr, JMM, GVsWithCode, TM);
 }
 
 ExecutionEngine *EngineBuilder::create() {
@@ -467,18 +467,25 @@ ExecutionEngine *EngineBuilder::create() {
   // Unless the interpreter was explicitly selected or the JIT is not linked,
   // try making a JIT.
   if (WhichEngine & EngineKind::JIT) {
-    if (TargetMachine *TM = EngineBuilder::selectTarget(M, MArch, MCPU, MAttrs,
+    Triple TT(M->getTargetTriple());
+    if (TargetMachine *TM = EngineBuilder::selectTarget(TT, MArch, MCPU, MAttrs,
                                                         Options,
                                                         RelocModel, CMModel,
                                                         OptLevel, ErrorStr)) {
+      if (!TM->getTarget().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";
+      }
+
       if (UseMCJIT && ExecutionEngine::MCJITCtor) {
         ExecutionEngine *EE =
-          ExecutionEngine::MCJITCtor(M, ErrorStr, JMM, OptLevel,
+          ExecutionEngine::MCJITCtor(M, ErrorStr, JMM,
                                      AllocateGVsWithCode, TM);
         if (EE) return EE;
       } else if (ExecutionEngine::JITCtor) {
         ExecutionEngine *EE =
-          ExecutionEngine::JITCtor(M, ErrorStr, JMM, OptLevel,
+          ExecutionEngine::JITCtor(M, ErrorStr, JMM,
                                    AllocateGVsWithCode, TM);
         if (EE) return EE;
       }

lib/ExecutionEngine/JIT/JIT.cpp

@@ -206,7 +206,6 @@ void DarwinRegisterFrame(void* FrameBegin) {
 ExecutionEngine *JIT::createJIT(Module *M,
                                 std::string *ErrorStr,
                                 JITMemoryManager *JMM,
-                                CodeGenOpt::Level OptLevel,
                                 bool GVsWithCode,
                                 TargetMachine *TM) {
   // Try to register the program as a source of symbols to resolve against.
@@ -216,7 +215,7 @@ ExecutionEngine *JIT::createJIT(Module *M,
 
   // If the target supports JIT code generation, create the JIT.
   if (TargetJITInfo *TJ = TM->getJITInfo()) {
-    return new JIT(M, *TM, *TJ, JMM, OptLevel, GVsWithCode);
+    return new JIT(M, *TM, *TJ, JMM, GVsWithCode);
   } else {
     if (ErrorStr)
       *ErrorStr = "target does not support JIT code generation";
@@ -268,7 +267,7 @@ extern "C" {
 }
 
 JIT::JIT(Module *M, TargetMachine &tm, TargetJITInfo &tji,
-         JITMemoryManager *JMM, CodeGenOpt::Level OptLevel, bool GVsWithCode)
+         JITMemoryManager *JMM, bool GVsWithCode)
   : ExecutionEngine(M), TM(tm), TJI(tji), AllocateGVsWithCode(GVsWithCode),
     isAlreadyCodeGenerating(false) {
   setTargetData(TM.getTargetData());

lib/ExecutionEngine/JIT/JIT.h

@@ -78,8 +78,7 @@ class JIT : public ExecutionEngine {
 
 
   JIT(Module *M, TargetMachine &tm, TargetJITInfo &tji,
-      JITMemoryManager *JMM, CodeGenOpt::Level OptLevel,
+      JITMemoryManager *JMM, bool AllocateGVsWithCode);
-      bool AllocateGVsWithCode);
 public:
   ~JIT();
 
@@ -185,7 +184,6 @@ public:
   static ExecutionEngine *createJIT(Module *M,
                                     std::string *ErrorStr,
                                     JITMemoryManager *JMM,
-                                    CodeGenOpt::Level OptLevel,
                                     bool GVsWithCode,
                                     TargetMachine *TM);
 

lib/ExecutionEngine/MCJIT/MCJIT.cpp

@@ -36,7 +36,6 @@ extern "C" void LLVMLinkInMCJIT() {
 ExecutionEngine *MCJIT::createJIT(Module *M,
                                   std::string *ErrorStr,
                                   JITMemoryManager *JMM,
-                                  CodeGenOpt::Level OptLevel,
                                   bool GVsWithCode,
                                   TargetMachine *TM) {
   // Try to register the program as a source of symbols to resolve against.
@@ -46,8 +45,7 @@ ExecutionEngine *MCJIT::createJIT(Module *M,
 
   // If the target supports JIT code generation, create the JIT.
   if (TargetJITInfo *TJ = TM->getJITInfo())
-    return new MCJIT(M, TM, *TJ, new MCJITMemoryManager(JMM, M), OptLevel,
+    return new MCJIT(M, TM, *TJ, new MCJITMemoryManager(JMM, M), GVsWithCode);
-                     GVsWithCode);
 
   if (ErrorStr)
     *ErrorStr = "target does not support JIT code generation";
@@ -55,8 +53,7 @@ ExecutionEngine *MCJIT::createJIT(Module *M,
 }
 
 MCJIT::MCJIT(Module *m, TargetMachine *tm, TargetJITInfo &tji,
-             RTDyldMemoryManager *MM, CodeGenOpt::Level OptLevel,
+             RTDyldMemoryManager *MM, bool AllocateGVsWithCode)
-             bool AllocateGVsWithCode)
   : ExecutionEngine(m), TM(tm), MemMgr(MM), M(m), OS(Buffer), Dyld(MM) {
 
   setTargetData(TM->getTargetData());

lib/ExecutionEngine/MCJIT/MCJIT.h

@@ -24,8 +24,7 @@ namespace llvm {
 
 class MCJIT : public ExecutionEngine {
   MCJIT(Module *M, TargetMachine *tm, TargetJITInfo &tji,
-        RTDyldMemoryManager *MemMgr, CodeGenOpt::Level OptLevel,
+        RTDyldMemoryManager *MemMgr, bool AllocateGVsWithCode);
-        bool AllocateGVsWithCode);
 
   TargetMachine *TM;
   MCContext *Ctx;
@@ -79,7 +78,6 @@ public:
   static ExecutionEngine *createJIT(Module *M,
                                     std::string *ErrorStr,
                                     JITMemoryManager *JMM,
-                                    CodeGenOpt::Level OptLevel,
                                     bool GVsWithCode,
                                     TargetMachine *TM);
 

lib/ExecutionEngine/TargetSelect.cpp

@@ -7,26 +7,26 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// This just asks the TargetRegistry for the appropriate JIT to use, and allows
+// This just asks the TargetRegistry for the appropriate target to use, and
-// the user to specify a specific one on the commandline with -march=x. Clients
+// allows the user to specify a specific one on the commandline with -march=x,
-// should initialize targets prior to calling createJIT.
+// -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/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"
+
 using namespace llvm;
 
 /// 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,
@@ -35,7 +35,7 @@ TargetMachine *EngineBuilder::selectTarget(Module *Mod,
                               CodeModel::Model CM,
                               CodeGenOpt::Level OL,
                               std::string *ErrorStr) {
-  Triple TheTriple(Mod->getTargetTriple());
+  Triple TheTriple(TargetTriple);
   if (TheTriple.getTriple().empty())
     TheTriple.setTriple(sys::getDefaultTargetTriple());
 
@@ -57,7 +57,7 @@ TargetMachine *EngineBuilder::selectTarget(Module *Mod,
     }
 
     // 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);
@@ -71,12 +71,6 @@ TargetMachine *EngineBuilder::selectTarget(Module *Mod,
     }
   }
 
-  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()) {