Revert "Upgrade V8 to 3.7.1"

This reverts commit 92f5a5d3caf01f382f90c235e9057590a5e76870.

V8 3.7.1 in debug mode on ia32 has a curious race-like bug where an fs.Stats
object is not fully formed until some time after it's created. This is easy
to demonstrate by running `make test-debug`.

V8 3.7.0 does not exhibit this behaviour so back we go.

Fixes #1981.

1 files changed, 7 insertions, 8 deletions

diff --git a/deps/v8/src/x64/lithium-codegen-x64.h b/deps/v8/src/x64/lithium-codegen-x64.h
index f3cb667973..106d7bb2e5 100644
--- a/deps/v8/src/x64/lithium-codegen-x64.h
+++ b/deps/v8/src/x64/lithium-codegen-x64.h
@@ -77,7 +77,6 @@ class LCodeGen BASE_EMBEDDED {
   XMMRegister ToDoubleRegister(LOperand* op) const;
   bool IsInteger32Constant(LConstantOperand* op) const;
   int ToInteger32(LConstantOperand* op) const;
-  double ToDouble(LConstantOperand* op) const;
   bool IsTaggedConstant(LConstantOperand* op) const;
   Handle<Object> ToHandle(LConstantOperand* op) const;
   Operand ToOperand(LOperand* op) const;
@@ -126,8 +125,8 @@ class LCodeGen BASE_EMBEDDED {
   bool is_done() const { return status_ == DONE; }
   bool is_aborted() const { return status_ == ABORTED; }
 
-  StrictModeFlag strict_mode_flag() const {
-    return info()->strict_mode_flag();
+  int strict_mode_flag() const {
+    return info()->is_strict_mode() ? kStrictMode : kNonStrictMode;
   }
 
   LChunk* chunk() const { return chunk_; }
@@ -191,8 +190,9 @@ class LCodeGen BASE_EMBEDDED {
                                int argc,
                                LInstruction* instr);
 
+
   // Generate a direct call to a known function.  Expects the function
-  // to be in rdi.
+  // to be in edi.
   void CallKnownFunction(Handle<JSFunction> function,
                          int arity,
                          LInstruction* instr,
@@ -251,6 +251,7 @@ class LCodeGen BASE_EMBEDDED {
   static Condition TokenToCondition(Token::Value op, bool is_unsigned);
   void EmitGoto(int block);
   void EmitBranch(int left_block, int right_block, Condition cc);
+  void EmitCmpI(LOperand* left, LOperand* right);
   void EmitNumberUntagD(Register input,
                         XMMRegister result,
                         bool deoptimize_on_undefined,
@@ -259,10 +260,8 @@ class LCodeGen BASE_EMBEDDED {
   // Emits optimized code for typeof x == "y".  Modifies input register.
   // Returns the condition on which a final split to
   // true and false label should be made, to optimize fallthrough.
-  Condition EmitTypeofIs(Label* true_label,
-                         Label* false_label,
-                         Register input,
-                         Handle<String> type_name);
+  Condition EmitTypeofIs(Label* true_label, Label* false_label,
+                         Register input, Handle<String> type_name);
 
   // Emits optimized code for %_IsObject(x).  Preserves input register.
   // Returns the condition on which a final split to