Move the various Subtarget dependent members down to the subtarget

for the Sparc port. Use the same initializeSubtargetDependencies
function to handle initialization similar to the other ports to
handle dependencies.

llvm-svn: 211811

1 files changed, 42 insertions, 10 deletions

diff --git a/llvm/lib/Target/Sparc/SparcSubtarget.cpp b/llvm/lib/Target/Sparc/SparcSubtarget.cpp
index e38fb02c9a8..eea0c8c33c6 100644
--- a/llvm/lib/Target/Sparc/SparcSubtarget.cpp
+++ b/llvm/lib/Target/Sparc/SparcSubtarget.cpp
@@ -26,20 +26,44 @@ using namespace llvm;
 
 void SparcSubtarget::anchor() { }
 
-SparcSubtarget::SparcSubtarget(const std::string &TT, const std::string &CPU,
-                               const std::string &FS,  bool is64Bit) :
-  SparcGenSubtargetInfo(TT, CPU, FS),
-  IsV9(false),
-  V8DeprecatedInsts(false),
-  IsVIS(false),
-  Is64Bit(is64Bit),
-  HasHardQuad(false),
-  UsePopc(false) {
+static std::string computeDataLayout(const SparcSubtarget &ST) {
+  // Sparc is big endian.
+  std::string Ret = "E-m:e";
+
+  // Some ABIs have 32bit pointers.
+  if (!ST.is64Bit())
+    Ret += "-p:32:32";
+
+  // Alignments for 64 bit integers.
+  Ret += "-i64:64";
+
+  // On SparcV9 128 floats are aligned to 128 bits, on others only to 64.
+  // On SparcV9 registers can hold 64 or 32 bits, on others only 32.
+  if (ST.is64Bit())
+    Ret += "-n32:64";
+  else
+    Ret += "-f128:64-n32";
+
+  if (ST.is64Bit())
+    Ret += "-S128";
+  else
+    Ret += "-S64";
+
+  return Ret;
+}
+
+SparcSubtarget &SparcSubtarget::initializeSubtargetDependencies(StringRef CPU,
+                                                                StringRef FS) {
+  IsV9 = false;
+  V8DeprecatedInsts = false;
+  IsVIS = false;
+  HasHardQuad = false;
+  UsePopc = false;
 
   // Determine default and user specified characteristics
   std::string CPUName = CPU;
   if (CPUName.empty())
-    CPUName = (is64Bit) ? "v9" : "v8";
+    CPUName = (Is64Bit) ? "v9" : "v8";
 
   // Parse features string.
   ParseSubtargetFeatures(CPUName, FS);
@@ -47,8 +71,16 @@ SparcSubtarget::SparcSubtarget(const std::string &TT, const std::string &CPU,
   // Popc is a v9-only instruction.
   if (!IsV9)
     UsePopc = false;
+
+  return *this;
 }
 
+SparcSubtarget::SparcSubtarget(const std::string &TT, const std::string &CPU,
+                               const std::string &FS, TargetMachine &TM,
+                               bool is64Bit)
+    : SparcGenSubtargetInfo(TT, CPU, FS), Is64Bit(is64Bit),
+      DL(computeDataLayout(initializeSubtargetDependencies(CPU, FS))),
+      InstrInfo(*this), TLInfo(TM), TSInfo(DL), FrameLowering(*this) {}
 
 int SparcSubtarget::getAdjustedFrameSize(int frameSize) const {