Require SSE2 support for the ia32 port.

src/ia32/lithium-ia32.h

Index: src/ia32/lithium-ia32.h
diff --git a/src/ia32/lithium-ia32.h b/src/ia32/lithium-ia32.h
index fe6f79463e08c74c922e1ea65086fe993f722384..7b848fc221c3fb5206caa88a5493d0396fef174b 100644
--- a/src/ia32/lithium-ia32.h
+++ b/src/ia32/lithium-ia32.h
@@ -45,9 +45,7 @@ class LCodeGen;
   V(ClampDToUint8)                              \
   V(ClampIToUint8)                              \
   V(ClampTToUint8)                              \
-  V(ClampTToUint8NoSSE2)                        \
   V(ClassOfTestAndBranch)                       \
-  V(ClobberDoubles)                             \
   V(CompareMinusZeroAndBranch)                  \
   V(CompareNumericAndBranch)                    \
   V(CmpObjectEqAndBranch)                       \
@@ -239,10 +237,7 @@ class LInstruction : public ZoneObject {
   bool ClobbersTemps() const { return IsCall(); }
   bool ClobbersRegisters() const { return IsCall(); }
   virtual bool ClobbersDoubleRegisters(Isolate* isolate) const {
-    return IsCall() ||
-           // We only have rudimentary X87Stack tracking, thus in general
-           // cannot handle phi-nodes.
-        (!CpuFeatures::IsSafeForSnapshot(isolate, SSE2) && IsControl());
+    return IsCall();
   }
 
   virtual bool HasResult() const = 0;
@@ -250,7 +245,6 @@ class LInstruction : public ZoneObject {
 
   bool HasDoubleRegisterResult();
   bool HasDoubleRegisterInput();
-  bool IsDoubleInput(X87Register reg, LCodeGen* cgen);
 
   LOperand* FirstInput() { return InputAt(0); }
   LOperand* Output() { return HasResult() ? result() : NULL; }
@@ -375,20 +369,6 @@ class LInstructionGap V8_FINAL : public LGap {
 };
 
 
-class LClobberDoubles V8_FINAL : public LTemplateInstruction<0, 0, 0> {
- public:
-  explicit LClobberDoubles(Isolate* isolate) {
-    ASSERT(!CpuFeatures::IsSafeForSnapshot(isolate, SSE2));
-  }
-
-  virtual bool ClobbersDoubleRegisters(Isolate* isolate) const V8_OVERRIDE {
-    return true;
-  }
-
-  DECLARE_CONCRETE_INSTRUCTION(ClobberDoubles, "clobber-d")
-};
-
-
 class LGoto V8_FINAL : public LTemplateInstruction<0, 0, 0> {
  public:
   explicit LGoto(HBasicBlock* block) : block_(block) { }
@@ -2460,30 +2440,6 @@ class LClampTToUint8 V8_FINAL : public LTemplateInstruction<1, 1, 1> {
 };
 
 
-// Truncating conversion from a tagged value to an int32.
-class LClampTToUint8NoSSE2 V8_FINAL : public LTemplateInstruction<1, 1, 3> {
- public:
-  LClampTToUint8NoSSE2(LOperand* unclamped,
-                       LOperand* temp1,
-                       LOperand* temp2,
-                       LOperand* temp3) {
-    inputs_[0] = unclamped;
-    temps_[0] = temp1;
-    temps_[1] = temp2;
-    temps_[2] = temp3;
-  }
-
-  LOperand* unclamped() { return inputs_[0]; }
-  LOperand* scratch() { return temps_[0]; }
-  LOperand* scratch2() { return temps_[1]; }
-  LOperand* scratch3() { return temps_[2]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(ClampTToUint8NoSSE2,
-                               "clamp-t-to-uint8-nosse2")
-  DECLARE_HYDROGEN_ACCESSOR(UnaryOperation)
-};
-
-
 class LCheckNonSmi V8_FINAL : public LTemplateInstruction<0, 1, 0> {
  public:
   explicit LCheckNonSmi(LOperand* value) {
@@ -2778,7 +2734,6 @@ class LChunkBuilder V8_FINAL : public LChunkBuilderBase {
   // Methods for getting operands for Use / Define / Temp.
   LUnallocated* ToUnallocated(Register reg);
   LUnallocated* ToUnallocated(XMMRegister reg);
-  LUnallocated* ToUnallocated(X87Register reg);
 
   // Methods for setting up define-use relationships.
   MUST_USE_RESULT LOperand* Use(HValue* value, LUnallocated* operand);
@@ -2840,7 +2795,6 @@ class LChunkBuilder V8_FINAL : public LChunkBuilderBase {
                             Register reg);
   LInstruction* DefineFixedDouble(LTemplateResultInstruction<1>* instr,
                                   XMMRegister reg);
-  LInstruction* DefineX87TOS(LTemplateResultInstruction<1>* instr);
   // Assigns an environment to an instruction.  An instruction which can
   // deoptimize must have an environment.
   LInstruction* AssignEnvironment(LInstruction* instr);