2 files changed, 16 insertions, 9 deletions
diff --git a/include/llvm/CodeGen/FunctionLoweringInfo.h b/include/llvm/CodeGen/FunctionLoweringInfo.h
index 804435aef7..432fafd95d 100644
--- a/include/llvm/CodeGen/FunctionLoweringInfo.h
+++ b/include/llvm/CodeGen/FunctionLoweringInfo.h
@@ -202,7 +202,7 @@ public:
   /// setArgumentFrameIndex - Record frame index for the byval
   /// argument.
   void setArgumentFrameIndex(const Argument *A, int FI);
-  
+
   /// getArgumentFrameIndex - Get frame index for the byval argument.
   int getArgumentFrameIndex(const Argument *A);
 
@@ -211,6 +211,13 @@ private:
   IndexedMap<LiveOutInfo, VirtReg2IndexFunctor> LiveOutRegInfo;
 };
 
+/// ComputeUsesVAFloatArgument - Determine if any floating-point values are
+/// being passed to this variadic function, and set the MachineModuleInfo's
+/// usesVAFloatArgument flag if so. This flag is used to emit an undefined
+/// reference to _fltused on Windows, which will link in MSVCRT's
+/// floating-point support.
+void ComputeUsesVAFloatArgument(const CallInst &I, MachineModuleInfo *MMI);
+
 /// AddCatchInfo - Extract the personality and type infos from an eh.selector
 /// call, and add them to the specified machine basic block.
 void AddCatchInfo(const CallInst &I,
diff --git a/include/llvm/CodeGen/MachineModuleInfo.h b/include/llvm/CodeGen/MachineModuleInfo.h
index 2bf7f1788f..6b88d4a949 100644
--- a/include/llvm/CodeGen/MachineModuleInfo.h
+++ b/include/llvm/CodeGen/MachineModuleInfo.h
@@ -161,10 +161,10 @@ class MachineModuleInfo : public ImmutablePass {
   /// in this module.
   bool DbgInfoAvailable;
 
-  /// CallsExternalVAFunctionWithFloatingPointArguments - True if this module
-  /// calls VarArg function with floating point arguments.  This is used to emit
-  /// an undefined reference to fltused on Windows targets.
-  bool CallsExternalVAFunctionWithFloatingPointArguments;
+  /// UsesVAFloatArgument - True if this module calls VarArg function with
+  /// floating-point arguments.  This is used to emit an undefined reference
+  /// to _fltused on Windows targets.
+  bool UsesVAFloatArgument;
 
 public:
   static char ID; // Pass identification, replacement for typeid
@@ -223,12 +223,12 @@ public:
   bool callsUnwindInit() const { return CallsUnwindInit; }
   void setCallsUnwindInit(bool b) { CallsUnwindInit = b; }
 
-  bool callsExternalVAFunctionWithFloatingPointArguments() const {
-    return CallsExternalVAFunctionWithFloatingPointArguments;
+  bool usesVAFloatArgument() const {
+    return UsesVAFloatArgument;
   }
 
-  void setCallsExternalVAFunctionWithFloatingPointArguments(bool b) {
-    CallsExternalVAFunctionWithFloatingPointArguments = b;
+  void setUsesVAFloatArgument(bool b) {
+    UsesVAFloatArgument = b;
   }
 
   /// getFrameMoves - Returns a reference to a list of moves done in the current