[mips][microMIPS] Implement LBU16, LHU16, LW16, SB16, SH16 and SW16 instructions

Differential Revision: http://reviews.llvm.org/D5122

llvm-svn: 222653

1 files changed, 46 insertions, 0 deletions

diff --git a/llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp b/llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
index ec7d5074d39..f458b5bf520 100644
--- a/llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
+++ b/llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
@@ -765,6 +765,15 @@ public:
     addExpr(Inst, Expr);
   }
 
+  void addMicroMipsMemOperands(MCInst &Inst, unsigned N) const {
+    assert(N == 2 && "Invalid number of operands!");
+
+    Inst.addOperand(MCOperand::CreateReg(getMemBase()->getGPRMM16Reg()));
+
+    const MCExpr *Expr = getMemOff();
+    addExpr(Inst, Expr);
+  }
+
   void addRegListOperands(MCInst &Inst, unsigned N) const {
     assert(N == 1 && "Invalid number of operands!");
 
@@ -797,6 +806,9 @@ public:
   template <unsigned Bits> bool isMemWithSimmOffset() const {
     return isMem() && isConstantMemOff() && isInt<Bits>(getConstantMemOff());
   }
+  bool isMemWithGRPMM16Base() const {
+    return isMem() && getMemBase()->isMM16AsmReg();
+  }
   bool isInvNum() const { return Kind == k_Immediate; }
   bool isLSAImm() const {
     if (!isConstantImm())
@@ -1272,6 +1284,40 @@ bool MipsAsmParser::processInstruction(MCInst &Inst, SMLoc IDLoc,
               Imm == 64 || Imm == 255 || Imm == 32768 || Imm == 65535))
           return Error(IDLoc, "immediate operand value out of range");
         break;
+      case Mips::LBU16_MM:
+        Opnd = Inst.getOperand(2);
+        if (!Opnd.isImm())
+          return Error(IDLoc, "expected immediate operand kind");
+        Imm = Opnd.getImm();
+        if (Imm < -1 || Imm > 14)
+          return Error(IDLoc, "immediate operand value out of range");
+        break;
+      case Mips::SB16_MM:
+        Opnd = Inst.getOperand(2);
+        if (!Opnd.isImm())
+          return Error(IDLoc, "expected immediate operand kind");
+        Imm = Opnd.getImm();
+        if (Imm < 0 || Imm > 15)
+          return Error(IDLoc, "immediate operand value out of range");
+        break;
+      case Mips::LHU16_MM:
+      case Mips::SH16_MM:
+        Opnd = Inst.getOperand(2);
+        if (!Opnd.isImm())
+          return Error(IDLoc, "expected immediate operand kind");
+        Imm = Opnd.getImm();
+        if (Imm < 0 || Imm > 30 || (Imm % 2 != 0))
+          return Error(IDLoc, "immediate operand value out of range");
+        break;
+      case Mips::LW16_MM:
+      case Mips::SW16_MM:
+        Opnd = Inst.getOperand(2);
+        if (!Opnd.isImm())
+          return Error(IDLoc, "expected immediate operand kind");
+        Imm = Opnd.getImm();
+        if (Imm < 0 || Imm > 60 || (Imm % 4 != 0))
+          return Error(IDLoc, "immediate operand value out of range");
+        break;
     }
   }