- Added option -relocation-model to set relocation model. Valid values include static...

[oota-llvm.git] / lib / Target / PowerPC / PPCSubtarget.cpp

diff --git a/lib/Target/PowerPC/PPCSubtarget.cpp b/lib/Target/PowerPC/PPCSubtarget.cpp
index 3bfa7a6eefe8a1ebe2c90634eb30d7ee4143e338..606dfc09799f698a704c399ceee5c3615dc3449f 100644 (file)
--- a/lib/Target/PowerPC/PPCSubtarget.cpp
+++ b/lib/Target/PowerPC/PPCSubtarget.cpp
@@ -1,4 +1,4 @@
-//===- PowerPCSubtarget.cpp - PPC Subtarget Information ---------*- C++ -*-===//
+//===- PowerPCSubtarget.cpp - PPC Subtarget Information -------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -11,47 +11,94 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "PowerPCSubtarget.h"
+#include "PPCSubtarget.h"
+#include "PPC.h"
 #include "llvm/Module.h"
+#include "llvm/Support/CommandLine.h"
+#include "PPCGenSubtarget.inc"
 
+using namespace llvm;
+PPCTargetEnum llvm::PPCTarget = TargetDefault;
+
+namespace llvm {
+  cl::opt<PPCTargetEnum, true>
+  PPCTargetArg(cl::desc("Force generation of code for a specific PPC target:"),
+               cl::values(
+                          clEnumValN(TargetAIX,  "aix", "  Enable AIX codegen"),
+                          clEnumValN(TargetDarwin,"darwin",
+                                     "  Enable Darwin codegen"),
+                          clEnumValEnd),
+               cl::location(PPCTarget), cl::init(TargetDefault));  
+} 
+ 
 #if defined(__APPLE__)
 #include <mach/mach.h>
 #include <mach/mach_host.h>
 #include <mach/host_info.h>
 #include <mach/machine.h>
 
-static boolean_t IsGP() {
+/// GetCurrentPowerPCFeatures - Returns the current CPUs features.
+static const char *GetCurrentPowerPCCPU() {
   host_basic_info_data_t hostInfo;
   mach_msg_type_number_t infoCount;
 
   infoCount = HOST_BASIC_INFO_COUNT;
   host_info(mach_host_self(), HOST_BASIC_INFO, (host_info_t)&hostInfo, 
             &infoCount);
+            
+  if (hostInfo.cpu_type != CPU_TYPE_POWERPC) return "generic";
+
+  switch(hostInfo.cpu_subtype) {
+  case CPU_SUBTYPE_POWERPC_601:   return "601";
+  case CPU_SUBTYPE_POWERPC_602:   return "602";
+  case CPU_SUBTYPE_POWERPC_603:   return "603";
+  case CPU_SUBTYPE_POWERPC_603e:  return "603e";
+  case CPU_SUBTYPE_POWERPC_603ev: return "603ev";
+  case CPU_SUBTYPE_POWERPC_604:   return "604";
+  case CPU_SUBTYPE_POWERPC_604e:  return "604e";
+  case CPU_SUBTYPE_POWERPC_620:   return "620";
+  case CPU_SUBTYPE_POWERPC_750:   return "750";
+  case CPU_SUBTYPE_POWERPC_7400:  return "7400";
+  case CPU_SUBTYPE_POWERPC_7450:  return "7450";
+  case CPU_SUBTYPE_POWERPC_970:   return "970";
+  default: ;
+  }
   
-  return ((hostInfo.cpu_type == CPU_TYPE_POWERPC) &&
-          (hostInfo.cpu_subtype == CPU_SUBTYPE_POWERPC_970));
-} 
+  return "generic";
+}
 #endif
 
-using namespace llvm;
 
-PPCSubtarget::PPCSubtarget(const Module &M)
-  : TargetSubtarget(), stackAlignment(16), isGigaProcessor(false), isAIX(false),
-    isDarwin(false) {
+PPCSubtarget::PPCSubtarget(const Module &M, const std::string &FS)
+  : StackAlignment(16)
+  , InstrItins()
+  , IsGigaProcessor(false)
+  , Is64Bit(false)
+  , Has64BitRegs(false)
+  , HasAltivec(false)
+  , HasFSQRT(false)
+  , IsAIX(false)
+  , IsDarwin(false) {
+
+  // Determine default and user specified characteristics
+  std::string CPU = "generic";
+#if defined(__APPLE__)
+  CPU = GetCurrentPowerPCCPU();
+#endif
+
+  // Parse features string.
+  ParseSubtargetFeatures(FS, CPU);
+
   // Set the boolean corresponding to the current target triple, or the default
   // if one cannot be determined, to true.
   const std::string& TT = M.getTargetTriple();
   if (TT.length() > 5) {
-    isDarwin = TT.find("darwin") != std::string::npos;
-#if defined(__APPLE__)
-    isGigaProcessor = IsGP();
-#endif
+    IsDarwin = TT.find("darwin") != std::string::npos;
   } else if (TT.empty()) {
 #if defined(_POWER)
-    isAIX = true;
+    IsAIX = true;
 #elif defined(__APPLE__)
-    isDarwin = true;
-    isGigaProcessor = IsGP();
+    IsDarwin = true;
 #endif
   }
 }