Introduce MCCodeGenInfo, which keeps information that can affect codegen

(including compilation, assembly). Move relocation model Reloc::Model from
TargetMachine to MCCodeGenInfo so it's accessible even without TargetMachine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135468 91177308-0d34-0410-b5e6-96231b3b80d8

6 files changed, 60 insertions, 6 deletions

diff --git a/tools/llc/llc.cpp b/tools/llc/llc.cpp
index c40298c3b1..f1d4dbcad5 100644
--- a/tools/llc/llc.cpp
+++ b/tools/llc/llc.cpp
@@ -76,6 +76,21 @@ MAttrs("mattr",
   cl::desc("Target specific attributes (-mattr=help for details)"),
   cl::value_desc("a1,+a2,-a3,..."));
 
+static cl::opt<Reloc::Model>
+RelocModel("relocation-model",
+             cl::desc("Choose relocation model"),
+             cl::init(Reloc::Default),
+             cl::values(
+            clEnumValN(Reloc::Default, "default",
+                       "Target default relocation model"),
+            clEnumValN(Reloc::Static, "static",
+                       "Non-relocatable code"),
+            clEnumValN(Reloc::PIC_, "pic",
+                       "Fully relocatable, position independent code"),
+            clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic",
+                       "Relocatable external references, non-relocatable code"),
+            clEnumValEnd));
+
 static cl::opt<bool>
 RelaxAll("mc-relax-all",
   cl::desc("When used with filetype=obj, "
@@ -202,6 +217,7 @@ int main(int argc, char **argv) {
   // Initialize targets first, so that --version shows registered targets.
   InitializeAllTargets();
   InitializeAllMCAsmInfos();
+  InitializeAllMCCodeGenInfos();
   InitializeAllMCSubtargetInfos();
   InitializeAllAsmPrinters();
   InitializeAllAsmParsers();
@@ -272,7 +288,7 @@ int main(int argc, char **argv) {
 
   std::auto_ptr<TargetMachine>
     target(TheTarget->createTargetMachine(TheTriple.getTriple(), MCPU,
-                                          FeaturesStr));
+                                          FeaturesStr, RelocModel));
   assert(target.get() && "Could not allocate target machine!");
   TargetMachine &Target = *target.get();
 
diff --git a/tools/lli/lli.cpp b/tools/lli/lli.cpp
index 014925c1a9..da03ddd4b0 100644
--- a/tools/lli/lli.cpp
+++ b/tools/lli/lli.cpp
@@ -108,6 +108,21 @@ namespace {
   NoLazyCompilation("disable-lazy-compilation",
                   cl::desc("Disable JIT lazy compilation"),
                   cl::init(false));
+
+  cl::opt<Reloc::Model>
+  RelocModel("relocation-model",
+             cl::desc("Choose relocation model"),
+             cl::init(Reloc::Default),
+             cl::values(
+            clEnumValN(Reloc::Default, "default",
+                       "Target default relocation model"),
+            clEnumValN(Reloc::Static, "static",
+                       "Non-relocatable code"),
+            clEnumValN(Reloc::PIC_, "pic",
+                       "Fully relocatable, position independent code"),
+            clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic",
+                       "Relocatable external references, non-relocatable code"),
+            clEnumValEnd));
 }
 
 static ExecutionEngine *EE = 0;
@@ -164,6 +179,7 @@ int main(int argc, char **argv, char * const *envp) {
   builder.setMArch(MArch);
   builder.setMCPU(MCPU);
   builder.setMAttrs(MAttrs);
+  builder.setRelocationModel(RelocModel);
   builder.setErrorStr(&ErrorMsg);
   builder.setEngineKind(ForceInterpreter
                         ? EngineKind::Interpreter
diff --git a/tools/llvm-mc/llvm-mc.cpp b/tools/llvm-mc/llvm-mc.cpp
index 1633ae3147..e2de05542b 100644
--- a/tools/llvm-mc/llvm-mc.cpp
+++ b/tools/llvm-mc/llvm-mc.cpp
@@ -111,6 +111,21 @@ MCPU("mcpu",
      cl::value_desc("cpu-name"),
      cl::init(""));
 
+static cl::opt<Reloc::Model>
+RelocModel("relocation-model",
+             cl::desc("Choose relocation model"),
+             cl::init(Reloc::Default),
+             cl::values(
+            clEnumValN(Reloc::Default, "default",
+                       "Target default relocation model"),
+            clEnumValN(Reloc::Static, "static",
+                       "Non-relocatable code"),
+            clEnumValN(Reloc::PIC_, "pic",
+                       "Fully relocatable, position independent code"),
+            clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic",
+                       "Relocatable external references, non-relocatable code"),
+            clEnumValEnd));
+
 static cl::opt<bool>
 NoInitialTextSection("n", cl::desc("Don't assume assembly file starts "
                                    "in the text section"));
@@ -321,7 +336,8 @@ static int AssembleInput(const char *ProgName) {
   //        the .cpu and .code16 directives).
   OwningPtr<TargetMachine> TM(TheTarget->createTargetMachine(TripleName,
                                                              MCPU,
-                                                             FeaturesStr));
+                                                             FeaturesStr,
+                                                             RelocModel));
 
   if (!TM) {
     errs() << ProgName << ": error: could not create target for triple '"
@@ -440,6 +456,7 @@ int main(int argc, char **argv) {
   // FIXME: We shouldn't need to initialize the Target(Machine)s.
   llvm::InitializeAllTargets();
   llvm::InitializeAllMCAsmInfos();
+  llvm::InitializeAllMCCodeGenInfos();
   llvm::InitializeAllMCInstrInfos();
   llvm::InitializeAllMCRegisterInfos();
   llvm::InitializeAllMCSubtargetInfos();
diff --git a/tools/llvm-objdump/llvm-objdump.cpp b/tools/llvm-objdump/llvm-objdump.cpp
index 4079e4aabe..59586ce761 100644
--- a/tools/llvm-objdump/llvm-objdump.cpp
+++ b/tools/llvm-objdump/llvm-objdump.cpp
@@ -270,6 +270,7 @@ int main(int argc, char **argv) {
   // FIXME: We shouldn't need to initialize the Target(Machine)s.
   llvm::InitializeAllTargets();
   llvm::InitializeAllMCAsmInfos();
+  llvm::InitializeAllMCCodeGenInfos();
   llvm::InitializeAllAsmPrinters();
   llvm::InitializeAllAsmParsers();
   llvm::InitializeAllDisassemblers();
diff --git a/tools/lto/LTOCodeGenerator.cpp b/tools/lto/LTOCodeGenerator.cpp
index 3fce45677c..28cfa9cc75 100644
--- a/tools/lto/LTOCodeGenerator.cpp
+++ b/tools/lto/LTOCodeGenerator.cpp
@@ -75,6 +75,7 @@ LTOCodeGenerator::LTOCodeGenerator()
 {
     InitializeAllTargets();
     InitializeAllMCAsmInfos();
+    InitializeAllMCCodeGenInfos();
     InitializeAllMCRegisterInfos();
     InitializeAllMCSubtargetInfos();
     InitializeAllAsmPrinters();
@@ -252,15 +253,16 @@ bool LTOCodeGenerator::determineTarget(std::string& errMsg)
 
         // The relocation model is actually a static member of TargetMachine
         // and needs to be set before the TargetMachine is instantiated.
+        Reloc::Model RelocModel = Reloc::Default;
         switch( _codeModel ) {
         case LTO_CODEGEN_PIC_MODEL_STATIC:
-            TargetMachine::setRelocationModel(Reloc::Static);
+            RelocModel = Reloc::Static;
             break;
         case LTO_CODEGEN_PIC_MODEL_DYNAMIC:
-            TargetMachine::setRelocationModel(Reloc::PIC_);
+            RelocModel = Reloc::PIC_;
             break;
         case LTO_CODEGEN_PIC_MODEL_DYNAMIC_NO_PIC:
-            TargetMachine::setRelocationModel(Reloc::DynamicNoPIC);
+            RelocModel = Reloc::DynamicNoPIC;
             break;
         }
 
@@ -268,7 +270,8 @@ bool LTOCodeGenerator::determineTarget(std::string& errMsg)
         SubtargetFeatures Features;
         Features.getDefaultSubtargetFeatures(llvm::Triple(Triple));
         std::string FeatureStr = Features.getString();
-        _target = march->createTargetMachine(Triple, _mCpu, FeatureStr);
+        _target = march->createTargetMachine(Triple, _mCpu, FeatureStr,
+                                             RelocModel);
     }
     return false;
 }
diff --git a/tools/lto/LTOModule.cpp b/tools/lto/LTOModule.cpp
index 92b2e9aa1a..0ca96bc28a 100644
--- a/tools/lto/LTOModule.cpp
+++ b/tools/lto/LTOModule.cpp
@@ -136,6 +136,7 @@ LTOModule *LTOModule::makeLTOModule(MemoryBuffer *buffer,
   static bool Initialized = false;
   if (!Initialized) {
     InitializeAllTargets();
+    InitializeAllMCCodeGenInfos();
     InitializeAllMCAsmInfos();
     InitializeAllMCSubtargetInfos();
     InitializeAllAsmParsers();