1 files changed, 29 insertions, 6 deletions
diff --git a/llvm/lib/Target/Mips/MipsInstrInfo.td b/llvm/lib/Target/Mips/MipsInstrInfo.td
index e0b317e9bf2..f3be7fc4618 100644
--- a/llvm/lib/Target/Mips/MipsInstrInfo.td
+++ b/llvm/lib/Target/Mips/MipsInstrInfo.td
@@ -598,6 +598,14 @@ def MipsMemSimm16AsmOperand : AsmOperandClass {
   let PredicateMethod = "isMemWithSimmOffset<16>";
 }
 
+def MipsMemSimm16GPRAsmOperand : AsmOperandClass {
+  let Name = "MemOffsetSimm16GPR";
+  let SuperClasses = [MipsMemAsmOperand];
+  let RenderMethod = "addMemOperands";
+  let ParserMethod = "parseMemOperand";
+  let PredicateMethod = "isMemWithSimmOffsetGPR<16>";
+}
+
 def MipsInvertedImmoperand : AsmOperandClass {
   let Name = "InvNum";
   let RenderMethod = "addImmOperands";
@@ -653,6 +661,12 @@ def mem_simm16 : mem_generic {
   let ParserMatchClass = MipsMemSimm16AsmOperand;
 }
 
+def mem_simm16gpr : mem_generic {
+  let MIOperandInfo = (ops ptr_rc, simm16);
+  let EncoderMethod = "getMemEncoding";
+  let ParserMatchClass = MipsMemSimm16GPRAsmOperand;
+}
+
 def mem_ea : Operand<iPTR> {
   let PrintMethod = "printMemOperandEA";
   let MIOperandInfo = (ops ptr_rc, simm16);
@@ -820,15 +834,21 @@ class LoadUpper<string opstr, RegisterOperand RO, Operand Imm>:
 }
 
 // Memory Load/Store
-class Load<string opstr, DAGOperand RO, SDPatternOperator OpNode = null_frag,
-           InstrItinClass Itin = NoItinerary, ComplexPattern Addr = addr> :
-  InstSE<(outs RO:$rt), (ins mem:$addr), !strconcat(opstr, "\t$rt, $addr"),
+class LoadMemory<string opstr, DAGOperand RO, DAGOperand MO,
+                 SDPatternOperator OpNode = null_frag,
+                 InstrItinClass Itin = NoItinerary,
+                 ComplexPattern Addr = addr> :
+  InstSE<(outs RO:$rt), (ins MO:$addr), !strconcat(opstr, "\t$rt, $addr"),
          [(set RO:$rt, (OpNode Addr:$addr))], Itin, FrmI, opstr> {
   let DecoderMethod = "DecodeMem";
   let canFoldAsLoad = 1;
   let mayLoad = 1;
 }
 
+class Load<string opstr, DAGOperand RO, SDPatternOperator OpNode = null_frag,
+           InstrItinClass Itin = NoItinerary, ComplexPattern Addr = addr> :
+  LoadMemory<opstr, RO, mem, OpNode, Itin, Addr>;
+
 class StoreMemory<string opstr, DAGOperand RO, DAGOperand MO,
             SDPatternOperator OpNode = null_frag,
             InstrItinClass Itin = NoItinerary, ComplexPattern Addr = addr> :
@@ -1374,9 +1394,12 @@ def ROTRV : MMRel, shift_rotate_reg<"rotrv", GPR32Opnd, II_ROTRV, rotr>,
 def LB  : Load<"lb", GPR32Opnd, sextloadi8, II_LB>, MMRel, LW_FM<0x20>;
 def LBu : Load<"lbu", GPR32Opnd, zextloadi8, II_LBU, addrDefault>, MMRel,
           LW_FM<0x24>;
-def LH  : Load<"lh", GPR32Opnd, sextloadi16, II_LH, addrDefault>, MMRel,
-          LW_FM<0x21>;
-def LHu : Load<"lhu", GPR32Opnd, zextloadi16, II_LHU>, MMRel, LW_FM<0x25>;
+let AdditionalPredicates = [NotInMicroMips] in {
+  def LH  : LoadMemory<"lh", GPR32Opnd, mem_simm16gpr, sextloadi16, II_LH,
+                       addrDefault>, MMRel, LW_FM<0x21>;
+  def LHu : LoadMemory<"lhu", GPR32Opnd, mem_simm16gpr, zextloadi16, II_LHU>,
+            MMRel, LW_FM<0x25>;
+}
 let AdditionalPredicates = [NotInMicroMips] in {
 def LW  : StdMMR6Rel, Load<"lw", GPR32Opnd, load, II_LW, addrDefault>, MMRel,
           LW_FM<0x23>;