Move DataLayout back to the TargetMachine from TargetSubtargetInfo

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

diff --git a/lib/Target/PowerPC/PPCTargetMachine.cpp b/lib/Target/PowerPC/PPCTargetMachine.cpp
index 31df9a5e56cc16aa1b9544440fa910e686424e56..aa6f991ce73a51a53089b2645ed90f8893dc0cd4 100644 (file)
--- a/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -45,6 +45,40 @@ extern "C" void LLVMInitializePowerPCTarget() {
   RegisterTargetMachine<PPC64TargetMachine> C(ThePPC64LETarget);
 }
 
+/// Return the datalayout string of a subtarget.
+static std::string getDataLayoutString(const Triple &T) {
+  bool is64Bit = T.getArch() == Triple::ppc64 || T.getArch() == Triple::ppc64le;
+  std::string Ret;
+
+  // Most PPC* platforms are big endian, PPC64LE is little endian.
+  if (T.getArch() == Triple::ppc64le)
+    Ret = "e";
+  else
+    Ret = "E";
+
+  Ret += DataLayout::getManglingComponent(T);
+
+  // PPC32 has 32 bit pointers. The PS3 (OS Lv2) is a PPC64 machine with 32 bit
+  // pointers.
+  if (!is64Bit || T.getOS() == Triple::Lv2)
+    Ret += "-p:32:32";
+
+  // Note, the alignment values for f64 and i64 on ppc64 in Darwin
+  // documentation are wrong; these are correct (i.e. "what gcc does").
+  if (is64Bit || !T.isOSDarwin())
+    Ret += "-i64:64";
+  else
+    Ret += "-f64:32:64";
+
+  // PPC64 has 32 and 64 bit registers, PPC32 has only 32 bit ones.
+  if (is64Bit)
+    Ret += "-n32:64";
+  else
+    Ret += "-n32";
+
+  return Ret;
+}
+
 static std::string computeFSAdditions(StringRef FS, CodeGenOpt::Level OL, StringRef TT) {
   std::string FullFS = FS;
   Triple TargetTriple(TT);
@@ -95,7 +129,7 @@ PPCTargetMachine::PPCTargetMachine(const Target &T, StringRef TT, StringRef CPU,
     : LLVMTargetMachine(T, TT, CPU, computeFSAdditions(FS, OL, TT), Options, RM,
                         CM, OL),
       TLOF(createTLOF(Triple(getTargetTriple()))),
-      Subtarget(TT, CPU, TargetFS, *this) {
+      DL(getDataLayoutString(Triple(TT))), Subtarget(TT, CPU, TargetFS, *this) {
   initAsmInfo();
 }
 
@@ -251,4 +285,3 @@ void PPCTargetMachine::addAnalysisPasses(PassManagerBase &PM) {
   PM.add(createBasicTargetTransformInfoPass(this));
   PM.add(createPPCTargetTransformInfoPass(this));
 }
-