1 files changed, 38 insertions, 1 deletions
diff --git a/lib/Target/Mips/MipsRegisterInfo.td b/lib/Target/Mips/MipsRegisterInfo.td
index 8c82239ebbd3..ccfdcc89b078 100644
--- a/lib/Target/Mips/MipsRegisterInfo.td
+++ b/lib/Target/Mips/MipsRegisterInfo.td
@@ -290,6 +290,25 @@ class GPR32Class<list<ValueType> regTypes> :
   K0, K1, GP, SP, FP, RA)>;
 
 def GPR32 : GPR32Class<[i32]>;
+
+def GPR32ZERO : RegisterClass<"Mips", [i32], 32, (add
+  // Reserved
+  ZERO)>;
+
+def GPR32NONZERO : RegisterClass<"Mips", [i32], 32, (add
+  // Reserved
+  AT,
+  // Return Values and Arguments
+  V0, V1, A0, A1, A2, A3,
+  // Not preserved across procedure calls
+  T0, T1, T2, T3, T4, T5, T6, T7,
+  // Callee save
+  S0, S1, S2, S3, S4, S5, S6, S7,
+  // Not preserved across procedure calls
+  T8, T9,
+  // Reserved
+  K0, K1, GP, SP, FP, RA)>;
+
 def DSPR  : GPR32Class<[v4i8, v2i16]>;
 
 def GPRMM16 : RegisterClass<"Mips", [i32], 32, (add
@@ -317,7 +336,7 @@ def GPRMM16MoveP : RegisterClass<"Mips", [i32], 32, (add
   S0, S2, S3, S4)>;
 
 def GPR64 : RegisterClass<"Mips", [i64], 64, (add
-// Reserved
+  // Reserved
   ZERO_64, AT_64,
   // Return Values and Arguments
   V0_64, V1_64, A0_64, A1_64, A2_64, A3_64,
@@ -479,6 +498,16 @@ def GPR64AsmOperand : MipsAsmRegOperand {
   let PredicateMethod = "isGPRAsmReg";
 }
 
+def GPR32ZeroAsmOperand : MipsAsmRegOperand {
+  let Name = "GPR32ZeroAsmReg";
+  let PredicateMethod = "isGPRZeroAsmReg";
+}
+
+def GPR32NonZeroAsmOperand : MipsAsmRegOperand {
+  let Name = "GPR32NonZeroAsmReg";
+  let PredicateMethod = "isGPRNonZeroAsmReg";
+}
+
 def GPR32AsmOperand : MipsAsmRegOperand {
   let Name = "GPR32AsmReg";
   let PredicateMethod = "isGPRAsmReg";
@@ -550,6 +579,14 @@ def MSACtrlAsmOperand : MipsAsmRegOperand {
   let Name = "MSACtrlAsmReg";
 }
 
+def GPR32ZeroOpnd : RegisterOperand<GPR32ZERO> {
+  let ParserMatchClass = GPR32ZeroAsmOperand;
+}
+
+def GPR32NonZeroOpnd : RegisterOperand<GPR32NONZERO> {
+  let ParserMatchClass = GPR32NonZeroAsmOperand;
+}
+
 def GPR32Opnd : RegisterOperand<GPR32> {
   let ParserMatchClass = GPR32AsmOperand;
 }