Index: lib/Target/Mips/MipsCallingConv.td
===================================================================
--- lib/Target/Mips/MipsCallingConv.td
+++ lib/Target/Mips/MipsCallingConv.td
@@ -10,12 +10,16 @@
 //===----------------------------------------------------------------------===//
 
 /// CCIfSubtarget - Match if the current subtarget has a feature F.
-class CCIfSubtarget<string F, CCAction A>
-    : CCIf<!strconcat("static_cast<const MipsSubtarget&>"
+class CCIfSubtarget<string F, CCAction A, string Invert = "">
+    : CCIf<!strconcat(Invert,
+                      "static_cast<const MipsSubtarget&>"
 			"(State.getMachineFunction().getSubtarget()).",
                       F),
            A>;
 
+// The inverse of CCIfSubtarget
+class CCIfNotSubtarget<string F, CCAction A> : CCIfSubtarget<F, A, "!">;
+
 //===----------------------------------------------------------------------===//
 // Mips O32 Calling Convention
 //===----------------------------------------------------------------------===//
@@ -32,7 +36,7 @@
   // f64 arguments are returned in D0_64 and D2_64 in FP64bit mode or
   // in D0 and D1 in FP32bit mode.
   CCIfType<[f64], CCIfSubtarget<"isFP64bit()", CCAssignToReg<[D0_64, D2_64]>>>,
-  CCIfType<[f64], CCIfSubtarget<"isNotFP64bit()", CCAssignToReg<[D0, D1]>>>
+  CCIfType<[f64], CCIfNotSubtarget<"isFP64bit()", CCAssignToReg<[D0, D1]>>>
 ]>;
 
 //===----------------------------------------------------------------------===//
@@ -122,11 +126,11 @@
   CCIfType<[f32], CCIfSubtarget<"isSingleFloat()",
                   CCAssignToReg<[F12, F13, F14, F15, F16, F17, F18, F19]>>>,
 
-  CCIfType<[f32], CCIfSubtarget<"isNotSingleFloat()",
+  CCIfType<[f32], CCIfNotSubtarget<"isSingleFloat()",
                   CCAssignToReg<[F12, F14, F16, F18]>>>,
 
   // The first 4 double fp arguments are passed in single fp registers.
-  CCIfType<[f64], CCIfSubtarget<"isNotSingleFloat()",
+  CCIfType<[f64], CCIfNotSubtarget<"isSingleFloat()",
                   CCAssignToReg<[D6, D7, D8, D9]>>>,
 
   // Integer values get stored in stack slots that are 4 bytes in
@@ -135,7 +139,7 @@
 
   // Integer values get stored in stack slots that are 8 bytes in
   // size and 8-byte aligned.
-  CCIfType<[f64], CCIfSubtarget<"isNotSingleFloat()", CCAssignToStack<8, 8>>>
+  CCIfType<[f64], CCIfNotSubtarget<"isSingleFloat()", CCAssignToStack<8, 8>>>
 ]>;
 
 def RetCC_MipsEABI : CallingConv<[
@@ -146,7 +150,7 @@
   CCIfType<[f32], CCAssignToReg<[F0, F1]>>,
 
   // f64 are returned in register D0
-  CCIfType<[f64], CCIfSubtarget<"isNotSingleFloat()", CCAssignToReg<[D0]>>>
+  CCIfType<[f64], CCIfNotSubtarget<"isSingleFloat()", CCAssignToReg<[D0]>>>
 ]>;
 
 //===----------------------------------------------------------------------===//
@@ -154,9 +158,9 @@
 //===----------------------------------------------------------------------===//
 def CC_MipsO32_FastCC : CallingConv<[
   // f64 arguments are passed in double-precision floating pointer registers.
-  CCIfType<[f64], CCIfSubtarget<"isNotFP64bit()",
-                                CCAssignToReg<[D0, D1, D2, D3, D4, D5, D6, D7,
-                                               D8, D9]>>>,
+  CCIfType<[f64], CCIfNotSubtarget<"isFP64bit()",
+                                   CCAssignToReg<[D0, D1, D2, D3, D4, D5, D6,
+                                                  D7, D8, D9]>>>,
   CCIfType<[f64], CCIfSubtarget<"isFP64bit()", CCIfSubtarget<"useOddSPReg()",
                                 CCAssignToReg<[D0_64, D1_64, D2_64, D3_64,
                                                D4_64, D5_64, D6_64, D7_64,
@@ -199,7 +203,7 @@
 
   // Integer arguments are passed in integer registers. All scratch registers,
   // except for AT, V0 and T9, are available to be used as argument registers.
-  CCIfType<[i32], CCIfSubtarget<"isNotTargetNaCl()",
+  CCIfType<[i32], CCIfNotSubtarget<"isTargetNaCl()",
       CCAssignToReg<[A0, A1, A2, A3, T0, T1, T2, T3, T4, T5, T6, T7, T8, V1]>>>,
 
   // In NaCl, T6, T7 and T8 are reserved and not available as argument
Index: lib/Target/Mips/MipsSubtarget.h
===================================================================
--- lib/Target/Mips/MipsSubtarget.h
+++ lib/Target/Mips/MipsSubtarget.h
@@ -207,12 +207,10 @@
   bool useOddSPReg() const { return UseOddSPReg; }
   bool noOddSPReg() const { return !UseOddSPReg; }
   bool isNaN2008() const { return IsNaN2008bit; }
-  bool isNotFP64bit() const { return !IsFP64bit; }
   bool isGP64bit() const { return IsGP64bit; }
   bool isGP32bit() const { return !IsGP64bit; }
   unsigned getGPRSizeInBytes() const { return isGP64bit() ? 8 : 4; }
   bool isSingleFloat() const { return IsSingleFloat; }
-  bool isNotSingleFloat() const { return !IsSingleFloat; }
   bool hasVFPU() const { return HasVFPU; }
   bool inMips16Mode() const { return InMips16Mode; }
   bool inMips16ModeDefault() const {
@@ -250,7 +248,6 @@
   bool os16() const { return Os16;};
 
   bool isTargetNaCl() const { return TargetTriple.isOSNaCl(); }
-  bool isNotTargetNaCl() const { return !TargetTriple.isOSNaCl(); }
 
   // for now constant islands are on for the whole compilation unit but we only
   // really use them if in addition we are in mips16 mode