Implement loop for global regexps in regexp assembler.

src/ia32/code-stubs-ia32.cc

Index: src/ia32/code-stubs-ia32.cc
diff --git a/src/ia32/code-stubs-ia32.cc b/src/ia32/code-stubs-ia32.cc
index a1c6edd0fab30080f0c6d2480ccfd33281b386c7..fc322f6f8ac73d5a27a708779d6f9e89f89e4610 100644
--- a/src/ia32/code-stubs-ia32.cc
+++ b/src/ia32/code-stubs-ia32.cc
@@ -3822,20 +3822,23 @@ void RegExpExecStub::Generate(MacroAssembler* masm) {
   __ IncrementCounter(counters->regexp_entry_native(), 1);
 
   // Isolates: note we add an additional parameter here (isolate pointer).
-  static const int kRegExpExecuteArguments = 8;
+  static const int kRegExpExecuteArguments = 9;
   __ EnterApiExitFrame(kRegExpExecuteArguments);
 
-  // Argument 8: Pass current isolate address.
-  __ mov(Operand(esp, 7 * kPointerSize),
+  // Argument 9: Pass current isolate address.
+  __ mov(Operand(esp, 8 * kPointerSize),
       Immediate(ExternalReference::isolate_address()));
 
-  // Argument 7: Indicate that this is a direct call from JavaScript.
-  __ mov(Operand(esp, 6 * kPointerSize), Immediate(1));
+  // Argument 8: Indicate that this is a direct call from JavaScript.
+  __ mov(Operand(esp, 7 * kPointerSize), Immediate(1));
 
-  // Argument 6: Start (high end) of backtracking stack memory area.
+  // Argument 7: Start (high end) of backtracking stack memory area.
   __ mov(esi, Operand::StaticVariable(address_of_regexp_stack_memory_address));
   __ add(esi, Operand::StaticVariable(address_of_regexp_stack_memory_size));
-  __ mov(Operand(esp, 5 * kPointerSize), esi);
+  __ mov(Operand(esp, 6 * kPointerSize), esi);
+
+  // Argument 6: Clear the number of capture registers for non-global capture.
+  __ mov(Operand(esp, 5 * kPointerSize), Immediate(0));
 
   // Argument 5: static offsets vector buffer.
   __ mov(Operand(esp, 4 * kPointerSize),
@@ -3899,6 +3902,7 @@ void RegExpExecStub::Generate(MacroAssembler* masm) {
   // Check the result.
   Label success;
   __ cmp(eax, NativeRegExpMacroAssembler::SUCCESS);
+  // We do not expect multiple results.
   __ j(equal, &success);
   Label failure;
   __ cmp(eax, NativeRegExpMacroAssembler::FAILURE);