1 files changed, 38 insertions, 1 deletions
diff --git a/contrib/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp b/contrib/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
index 9acefe53ce4a..d6767d51f2cc 100644
--- a/contrib/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/contrib/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -33,6 +33,43 @@ extern "C" void LLVMInitializePowerPCTarget() {
   RegisterTargetMachine<PPC64TargetMachine> C(ThePPC64LETarget);
 }
 
+/// Return the datalayout string of a subtarget.
+static std::string getDataLayoutString(const PPCSubtarget &ST) {
+  const Triple &T = ST.getTargetTriple();
+
+  // PPC is big endian
+  std::string Ret = "E";
+
+  // PPC64 has 64 bit pointers, PPC32 has 32 bit pointers.
+  if (ST.isPPC64())
+    Ret += "-p:64:64";
+  else
+    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 (ST.isPPC64() || ST.isSVR4ABI())
+    Ret += "-f64:64:64-i64:64:64";
+  else
+    Ret += "-f64:32:64";
+
+  // Set support for 128 floats depending on the ABI.
+  if (!ST.isPPC64() && ST.isSVR4ABI())
+    Ret += "-f128:64:128";
+
+  // Some ABIs support 128 bit vectors.
+  if (ST.isPPC64() && ST.isSVR4ABI())
+    Ret += "-v128:128:128";
+
+  // PPC64 has 32 and 64 bit register, PPC32 has only 32 bit ones.
+  if (ST.isPPC64())
+    Ret += "-n32:64";
+  else
+    Ret += "-n32";
+
+  return Ret;
+}
+
 PPCTargetMachine::PPCTargetMachine(const Target &T, StringRef TT,
                                    StringRef CPU, StringRef FS,
                                    const TargetOptions &Options,
@@ -41,7 +78,7 @@ PPCTargetMachine::PPCTargetMachine(const Target &T, StringRef TT,
                                    bool is64Bit)
   : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
     Subtarget(TT, CPU, FS, is64Bit),
-    DL(Subtarget.getDataLayoutString()), InstrInfo(*this),
+    DL(getDataLayoutString(Subtarget)), InstrInfo(*this),
     FrameLowering(Subtarget), JITInfo(*this, is64Bit),
     TLInfo(*this), TSInfo(*this),
     InstrItins(Subtarget.getInstrItineraryData()) {