Require SSE2 support for the ia32 port.

src/v8globals.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_V8GLOBALS_H_
 #define V8_V8GLOBALS_H_
 
 #include "globals.h"
 #include "checks.h"
 
@@ skipping 385 matching lines @@
   }
 #else
 #define TRACK_MEMORY(name)
 #endif
 
 
 // Feature flags bit positions. They are mostly based on the CPUID spec.
 // On X86/X64, values below 32 are bits in EDX, values above 32 are bits in ECX.
 enum CpuFeature { SSE4_1 = 32 + 19,  // x86
                   SSE3 = 32 + 0,     // x86
-                  SSE2 = 26,   // x86
                   CMOV = 15,   // x86
                   VFP3 = 1,    // ARM
                   ARMv7 = 2,   // ARM
                   SUDIV = 3,   // ARM
                   UNALIGNED_ACCESSES = 4,  // ARM
                   MOVW_MOVT_IMMEDIATE_LOADS = 5,  // ARM
                   VFP32DREGS = 6,  // ARM
                   NEON = 7,    // ARM
                   SAHF = 0,    // x86
                   FPU = 1};    // MIPS
@@ skipping 128 matching lines @@
 enum MinusZeroMode {
   TREAT_MINUS_ZERO_AS_ZERO,
   FAIL_ON_MINUS_ZERO
 };
 
 } }  // namespace v8::internal
 
 namespace i = v8::internal;
 
 #endif  // V8_V8GLOBALS_H_