Revert "Integrate the Irregexp Regular Expression Engine."

runtime/vm/intermediate_language_x64.cc

Index: runtime/vm/intermediate_language_x64.cc
diff --git a/runtime/vm/intermediate_language_x64.cc b/runtime/vm/intermediate_language_x64.cc
index 8e09cea4357b97e2e03087acd98fb707fbbc9568..130000f940f0e0cf5c8c6cba5ef5e99b63560e17 100644
--- a/runtime/vm/intermediate_language_x64.cc
+++ b/runtime/vm/intermediate_language_x64.cc
@@ -1131,60 +1131,6 @@ void LoadIndexedInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 }
 
 
-LocationSummary* LoadCodeUnitsInstr::MakeLocationSummary(Isolate* isolate,
-                                                         bool opt) const {
-  const intptr_t kNumInputs = 2;
-  const intptr_t kNumTemps = 0;
-  LocationSummary* summary = new(isolate) LocationSummary(
-      isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
-  summary->set_in(0, Location::RequiresRegister());
-  // The smi index is either untagged (element size == 1), or it is left smi
-  // tagged (for all element sizes > 1).
-  summary->set_in(1, index_scale() == 1 ? Location::WritableRegister()
-                                        : Location::RequiresRegister());
-  summary->set_out(0, Location::RequiresRegister());
-  return summary;
-}
-
-
-void LoadCodeUnitsInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
-  const Register array = locs()->in(0).reg();
-  const Location index = locs()->in(1);
-
-  Address element_address = Assembler::ElementAddressForRegIndex(
-        IsExternal(), class_id(), index_scale(), array, index.reg());
-
-  if ((index_scale() == 1)) {
-    __ SmiUntag(index.reg());
-  }
-  Register result = locs()->out(0).reg();
-  switch (class_id()) {
-    case kOneByteStringCid:
-    case kExternalOneByteStringCid:
-      switch (element_count()) {
-        case 1: __ movzxb(result, element_address); break;
-        case 2: __ movzxw(result, element_address); break;
-        case 4: __ movl(result, element_address); break;
-        default: UNREACHABLE();
-      }
-      __ SmiTag(result);
-      break;
-    case kTwoByteStringCid:
-    case kExternalTwoByteStringCid:
-      switch (element_count()) {
-        case 1: __ movzxw(result, element_address); break;
-        case 2: __ movl(result, element_address); break;
-        default: UNREACHABLE();
-      }
-      __ SmiTag(result);
-      break;
-    default:
-      UNREACHABLE();
-      break;
-  }
-}
-
-
 Representation StoreIndexedInstr::RequiredInputRepresentation(
     intptr_t idx) const {
   if (idx == 0) return kNoRepresentation;
@@ -4616,37 +4562,6 @@ void MathUnaryInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 }
 
 
-LocationSummary* CaseInsensitiveCompareUC16Instr::MakeLocationSummary(
-    Isolate* isolate, bool opt) const {
-  const intptr_t kNumTemps = 0;
-  LocationSummary* summary = new(isolate) LocationSummary(
-      isolate, InputCount(), kNumTemps, LocationSummary::kCall);
-  summary->set_in(0, Location::RegisterLocation(CallingConventions::kArg1Reg));
-  summary->set_in(1, Location::RegisterLocation(CallingConventions::kArg2Reg));
-  summary->set_in(2, Location::RegisterLocation(CallingConventions::kArg3Reg));
-  summary->set_in(3, Location::RegisterLocation(CallingConventions::kArg4Reg));
-  summary->set_out(0, Location::RegisterLocation(RAX));
-  return summary;
-}
-
-
-void CaseInsensitiveCompareUC16Instr::EmitNativeCode(
-    FlowGraphCompiler* compiler) {
-
-  // Save RSP. R13 is chosen because it is callee saved so we do not need to
-  // back it up before calling into the runtime.
-  static const Register kSavedSPReg = R13;
-  __ movq(kSavedSPReg, RSP);
-  __ ReserveAlignedFrameSpace(0);
-
-  // Call the function. Parameters are already in their correct spots.
-  __ CallRuntime(TargetFunction(), TargetFunction().argument_count());
-
-  // Restore RSP.
-  __ movq(RSP, kSavedSPReg);
-}
-
-
 LocationSummary* UnarySmiOpInstr::MakeLocationSummary(Isolate* isolate,
                                                       bool opt) const {
   const intptr_t kNumInputs = 1;
@@ -6170,36 +6085,6 @@ void GotoInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 }
 
 
-LocationSummary* IndirectGotoInstr::MakeLocationSummary(Isolate* isolate,
-                                                        bool opt) const {
-  const intptr_t kNumInputs = 1;
-  const intptr_t kNumTemps = 1;
-
-  LocationSummary* summary = new(isolate) LocationSummary(
-        isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
-
-  summary->set_in(0, Location::RequiresRegister());
-  summary->set_temp(0, Location::RequiresRegister());
-
-  return summary;
-}
-
-
-void IndirectGotoInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
-  Register offset_reg = locs()->in(0).reg();
-  Register target_address_reg = locs()->temp_slot(0)->reg();
-
-  // Load from [current frame pointer] + kPcMarkerSlotFromFp.
-  __ movq(target_address_reg, Address(RBP, kPcMarkerSlotFromFp * kWordSize));
-
-  // Calculate the final absolute address.
-  __ SmiUntag(offset_reg);
-  __ addq(target_address_reg, offset_reg);
-
-  // Jump to the absolute address.
-  __ jmp(target_address_reg);
-}
-
 LocationSummary* StrictCompareInstr::MakeLocationSummary(Isolate* isolate,
                                                          bool opt) const {
   const intptr_t kNumInputs = 2;