-no-implicit-float means explicit fp operations are legal.

[oota-llvm.git] / lib / Target / X86 / X86TargetMachine.cpp

diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp
index 08753e70e8c9bc07fee23b6c2ba48a629ed30b71..a20e1c448968c3cf2d0ae7460e57fca98e9c48b7 100644 (file)
--- a/lib/Target/X86/X86TargetMachine.cpp
+++ b/lib/Target/X86/X86TargetMachine.cpp
@@ -32,9 +32,9 @@ int X86TargetMachineModule = 0;
 
 // Register the target.
 static RegisterTarget<X86_32TargetMachine>
-X("x86",    "  32-bit X86: Pentium-Pro and above");
+X("x86",    "32-bit X86: Pentium-Pro and above");
 static RegisterTarget<X86_64TargetMachine>
-Y("x86-64", "  64-bit X86: EM64T and AMD64");
+Y("x86-64", "64-bit X86: EM64T and AMD64");
 
 // No assembler printer by default
 X86TargetMachine::AsmPrinterCtorFn X86TargetMachine::AsmPrinterCtor = 0;
@@ -143,6 +143,15 @@ X86TargetMachine::X86TargetMachine(const Module &M, const std::string &FS,
     else
       setRelocationModel(Reloc::Static);
   }
+
+  // ELF doesn't have a distinct dynamic-no-PIC model. Dynamic-no-PIC
+  // is defined as a model for code which may be used in static or
+  // dynamic executables but not necessarily a shared library. On ELF
+  // implement this by using the Static model.
+  if (Subtarget.isTargetELF() &&
+      getRelocationModel() == Reloc::DynamicNoPIC)
+    setRelocationModel(Reloc::Static);
+
   if (Subtarget.is64Bit()) {
     // No DynamicNoPIC support under X86-64.
     if (getRelocationModel() == Reloc::DynamicNoPIC)
@@ -153,17 +162,17 @@ X86TargetMachine::X86TargetMachine(const Module &M, const std::string &FS,
   }
 
   if (Subtarget.isTargetCygMing())
-    Subtarget.setPICStyle(PICStyle::WinPIC);
+    Subtarget.setPICStyle(PICStyles::WinPIC);
   else if (Subtarget.isTargetDarwin()) {
     if (Subtarget.is64Bit())
-      Subtarget.setPICStyle(PICStyle::RIPRel);
+      Subtarget.setPICStyle(PICStyles::RIPRel);
     else
-      Subtarget.setPICStyle(PICStyle::Stub);
+      Subtarget.setPICStyle(PICStyles::Stub);
   } else if (Subtarget.isTargetELF()) {
     if (Subtarget.is64Bit())
-      Subtarget.setPICStyle(PICStyle::RIPRel);
+      Subtarget.setPICStyle(PICStyles::RIPRel);
     else
-      Subtarget.setPICStyle(PICStyle::GOT);
+      Subtarget.setPICStyle(PICStyles::GOT);
   }
 }
 
@@ -174,6 +183,14 @@ X86TargetMachine::X86TargetMachine(const Module &M, const std::string &FS,
 bool X86TargetMachine::addInstSelector(PassManagerBase &PM, bool Fast) {
   // Install an instruction selector.
   PM.add(createX86ISelDag(*this, Fast));
+
+  // If we're using Fast-ISel, clean up the mess.
+  if (EnableFastISel)
+    PM.add(createDeadMachineInstructionElimPass());
+
+  // Install a pass to insert x87 FP_REG_KILL instructions, as needed.
+  PM.add(createX87FPRegKillInserterPass());
+
   return false;
 }
 
@@ -190,10 +207,10 @@ bool X86TargetMachine::addPostRegAlloc(PassManagerBase &PM, bool Fast) {
 }
 
 bool X86TargetMachine::addAssemblyEmitter(PassManagerBase &PM, bool Fast, 
-                                          raw_ostream &Out) {
+                                          bool Verbose, raw_ostream &Out) {
   assert(AsmPrinterCtor && "AsmPrinter was not linked in");
   if (AsmPrinterCtor)
-    PM.add(AsmPrinterCtor(Out, *this));
+    PM.add(AsmPrinterCtor(Out, *this, Fast, Verbose));
   return false;
 }
 
@@ -219,7 +236,7 @@ bool X86TargetMachine::addCodeEmitter(PassManagerBase &PM, bool Fast,
   if (DumpAsm) {
     assert(AsmPrinterCtor && "AsmPrinter was not linked in");
     if (AsmPrinterCtor)
-      PM.add(AsmPrinterCtor(errs(), *this));
+      PM.add(AsmPrinterCtor(errs(), *this, Fast, true));
   }
 
   return false;
@@ -231,8 +248,17 @@ bool X86TargetMachine::addSimpleCodeEmitter(PassManagerBase &PM, bool Fast,
   if (DumpAsm) {
     assert(AsmPrinterCtor && "AsmPrinter was not linked in");
     if (AsmPrinterCtor)
-      PM.add(AsmPrinterCtor(errs(), *this));
+      PM.add(AsmPrinterCtor(errs(), *this, Fast, true));
   }
 
   return false;
 }
+
+/// symbolicAddressesAreRIPRel - Return true if symbolic addresses are
+/// RIP-relative on this machine, taking into consideration the relocation
+/// model and subtarget. RIP-relative addresses cannot have a separate
+/// base or index register.
+bool X86TargetMachine::symbolicAddressesAreRIPRel() const {
+  return getRelocationModel() != Reloc::Static &&
+         Subtarget.isPICStyleRIPRel();
+}