Integrate the Irregexp Regular Expression Engine.

runtime/vm/intrinsifier_ia32.cc

Index: runtime/vm/intrinsifier_ia32.cc
diff --git a/runtime/vm/intrinsifier_ia32.cc b/runtime/vm/intrinsifier_ia32.cc
index 5c1b1df9c05d6155be396be8f001d1c06aaa66a6..713282a339076628770ab103785589c13e68705f 100644
--- a/runtime/vm/intrinsifier_ia32.cc
+++ b/runtime/vm/intrinsifier_ia32.cc
@@ -14,11 +14,12 @@
 #include "vm/intrinsifier.h"
 
 #include "vm/assembler.h"
+#include "vm/dart_entry.h"
 #include "vm/flow_graph_compiler.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/os.h"
-#include "vm/stub_code.h"
+#include "vm/regexp_assembler.h"
 #include "vm/symbols.h"
 
 namespace dart {
@@ -2049,6 +2050,40 @@ void Intrinsifier::TwoByteString_equality(Assembler* assembler) {
 }
 
 
+void Intrinsifier::JSRegExp_ExecuteMatch(Assembler* assembler) {
+  if (FLAG_use_jscre) {
+    return;
+  }
+  static const intptr_t kRegExpParamOffset = 3 * kWordSize;
+  static const intptr_t kStringParamOffset = 2 * kWordSize;
+  // start_index smi is located at offset 1.
+
+  // Incoming registers:
+  // EAX: Function. (Will be loaded with the specialized matcher function.)
+  // ECX: IC-Data. (Will be preserved.)
+  // EDX: Arguments descriptor. (Will be preserved.)
+
+  // Load the specialized function pointer into EAX. Leverage the fact the
+  // string CIDs as well as stored function pointers are in sequence.
+  __ movl(EBX, Address(ESP, kRegExpParamOffset));
+  __ movl(EDI, Address(ESP, kStringParamOffset));
+  __ LoadClassId(EDI, EDI);
+  __ SubImmediate(EDI, Immediate(kOneByteStringCid));
+  __ movl(EAX, FieldAddress(EBX, EDI, TIMES_4,
+                            JSRegExp::function_offset(kOneByteStringCid)));
+
+  // Registers are now set up for the lazy compile stub. It expects the function
+  // in EAX, the argument descriptor in EDX, and IC-Data in ECX.
+  static const intptr_t arg_count = RegExpMacroAssembler::kParamCount;
+  __ LoadObject(EDX, Array::Handle(ArgumentsDescriptor::New(arg_count)));
+
+  // Tail-call the function.
+  __ movl(EDI, FieldAddress(EAX, Function::instructions_offset()));
+  __ addl(EDI, Immediate(Instructions::HeaderSize() - kHeapObjectTag));
+  __ jmp(EDI);
+}
+
+
 // On stack: user tag (+1), return-address (+0).
 void Intrinsifier::UserTag_makeCurrent(Assembler* assembler) {
   Isolate* isolate = Isolate::Current();