Require SSE2 support for the ia32 port.

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 8380266d92edf0b13f644f38f3f2917c1fdaf119..0740d7915c9553c53d8ba20f27da42cb04486bd8 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -1167,9 +1167,7 @@ class BinaryOpICStub : public HydrogenCodeStub {
     return state_.GetExtraICState();
   }
 
-  virtual void VerifyPlatformFeatures() V8_FINAL V8_OVERRIDE {
-    ASSERT(CpuFeatures::VerifyCrossCompiling(SSE2));
-  }
+  virtual void VerifyPlatformFeatures() V8_FINAL V8_OVERRIDE { }
 
   virtual Handle<Code> GenerateCode() V8_OVERRIDE;
 
@@ -1224,9 +1222,7 @@ class BinaryOpICWithAllocationSiteStub V8_FINAL : public PlatformCodeStub {
     return state_.GetExtraICState();
   }
 
-  virtual void VerifyPlatformFeatures() V8_OVERRIDE {
-    ASSERT(CpuFeatures::VerifyCrossCompiling(SSE2));
-  }
+  virtual void VerifyPlatformFeatures() V8_OVERRIDE { }
 
   virtual void Generate(MacroAssembler* masm) V8_OVERRIDE;
 
@@ -1307,9 +1303,7 @@ class StringAddStub V8_FINAL : public HydrogenCodeStub {
     return PretenureFlagBits::decode(bit_field_);
   }
 
-  virtual void VerifyPlatformFeatures() V8_OVERRIDE {
-    ASSERT(CpuFeatures::VerifyCrossCompiling(SSE2));
-  }
+  virtual void VerifyPlatformFeatures() V8_OVERRIDE { }
 
   virtual Handle<Code> GenerateCode() V8_OVERRIDE;
 
@@ -1521,9 +1515,7 @@ class CEntryStub : public PlatformCodeStub {
   static void GenerateAheadOfTime(Isolate* isolate);
 
  protected:
-  virtual void VerifyPlatformFeatures() V8_OVERRIDE {
-    ASSERT(CpuFeatures::VerifyCrossCompiling(SSE2));
-  };
+  virtual void VerifyPlatformFeatures() V8_OVERRIDE { }
 
  private:
   // Number of pointers/values returned.
@@ -1919,9 +1911,7 @@ class DoubleToIStub : public PlatformCodeStub {
       OffsetBits::encode(offset) |
       IsTruncatingBits::encode(is_truncating) |
       SkipFastPathBits::encode(skip_fastpath) |
-      SSEBits::encode(
-          CpuFeatures::IsSafeForSnapshot(isolate, SSE2) ?
-          CpuFeatures::IsSafeForSnapshot(isolate, SSE3) ? 2 : 1 : 0);
+      SSE3Bits::encode(CpuFeatures::IsSafeForSnapshot(isolate, SSE3) ? 1 : 0);
   }
 
   Register source() {
@@ -1949,9 +1939,7 @@ class DoubleToIStub : public PlatformCodeStub {
   virtual bool SometimesSetsUpAFrame() { return false; }
 
  protected:
-  virtual void VerifyPlatformFeatures() V8_OVERRIDE {
-    ASSERT(CpuFeatures::VerifyCrossCompiling(SSE2));
-  }
+  virtual void VerifyPlatformFeatures() V8_OVERRIDE { }
 
  private:
   static const int kBitsPerRegisterNumber = 6;
@@ -1967,8 +1955,8 @@ class DoubleToIStub : public PlatformCodeStub {
       public BitField<int, 2 * kBitsPerRegisterNumber + 1, 3> {};  // NOLINT
   class SkipFastPathBits:
       public BitField<int, 2 * kBitsPerRegisterNumber + 4, 1> {};  // NOLINT
-  class SSEBits:
-      public BitField<int, 2 * kBitsPerRegisterNumber + 5, 2> {};  // NOLINT
+  class SSE3Bits:
+      public BitField<int, 2 * kBitsPerRegisterNumber + 5, 1> {};  // NOLINT
 
   Major MajorKey() { return DoubleToI; }
   int MinorKey() { return bit_field_; }