[Power PC] llvm soft float support for ppc32

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

diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index 242c1ea330968844d8e55289c9dc7a02e55ccc77..8788382567bcb4ee4078b9747b801bf41b0aa011 100644 (file)
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -42,10 +42,6 @@
 
 using namespace llvm;
 
-// FIXME: Remove this once soft-float is supported.
-static cl::opt<bool> DisablePPCFloatInVariadic("disable-ppc-float-in-variadic",
-cl::desc("disable saving float registers for va_start on PPC"), cl::Hidden);
-
 static cl::opt<bool> DisablePPCPreinc("disable-ppc-preinc",
 cl::desc("disable preincrement load/store generation on PPC"), cl::Hidden);
 
@@ -72,8 +68,10 @@ PPCTargetLowering::PPCTargetLowering(const PPCTargetMachine &TM,
 
   // Set up the register classes.
   addRegisterClass(MVT::i32, &PPC::GPRCRegClass);
-  addRegisterClass(MVT::f32, &PPC::F4RCRegClass);
-  addRegisterClass(MVT::f64, &PPC::F8RCRegClass);
+  if (!Subtarget.useSoftFloat()) {
+    addRegisterClass(MVT::f32, &PPC::F4RCRegClass);
+    addRegisterClass(MVT::f64, &PPC::F8RCRegClass);
+  }
 
   // PowerPC has an i16 but no i8 (or i1) SEXTLOAD
   for (MVT VT : MVT::integer_valuetypes()) {
@@ -979,6 +977,10 @@ unsigned PPCTargetLowering::getByValTypeAlignment(Type *Ty,
   return Align;
 }
 
+bool PPCTargetLowering::useSoftFloat() const {
+  return Subtarget.useSoftFloat();
+}
+
 const char *PPCTargetLowering::getTargetNodeName(unsigned Opcode) const {
   switch ((PPCISD::NodeType)Opcode) {
   case PPCISD::FIRST_NUMBER:    break;
@@ -2945,8 +2947,9 @@ PPCTargetLowering::LowerFormalArguments_32SVR4(
       PPC::F8
     };
     unsigned NumFPArgRegs = array_lengthof(FPArgRegs);
-    if (DisablePPCFloatInVariadic)
-      NumFPArgRegs = 0;
+
+    if (Subtarget.useSoftFloat())
+       NumFPArgRegs = 0;
 
     FuncInfo->setVarArgsNumGPR(CCInfo.getFirstUnallocated(GPArgRegs));
     FuncInfo->setVarArgsNumFPR(CCInfo.getFirstUnallocated(FPArgRegs));