Add several SIMD opcodes to IA32

src/ia32/macro-assembler-ia32.cc

 // 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.
 
 #if V8_TARGET_ARCH_IA32
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 2260 matching lines @@
     }
   }
 }
 
 
 void MacroAssembler::Pextrd(Register dst, XMMRegister src, int8_t imm8) {
   if (imm8 == 0) {
     movd(dst, src);
     return;
   }
-  DCHECK_EQ(1, imm8);
   if (CpuFeatures::IsSupported(SSE4_1)) {
     CpuFeatureScope sse_scope(this, SSE4_1);
     pextrd(dst, src, imm8);
     return;
   }
+  DCHECK_EQ(1, imm8);
   pshufd(xmm0, src, 1);
   movd(dst, xmm0);
 }
 
 
 void MacroAssembler::Pinsrd(XMMRegister dst, const Operand& src, int8_t imm8) {
-  DCHECK(imm8 == 0 || imm8 == 1);
   if (CpuFeatures::IsSupported(SSE4_1)) {
     CpuFeatureScope sse_scope(this, SSE4_1);
     pinsrd(dst, src, imm8);
     return;
   }
   movd(xmm0, src);
   if (imm8 == 1) {
     punpckldq(dst, xmm0);
   } else {
     DCHECK_EQ(0, imm8);
@@ skipping 627 matching lines @@
   mov(eax, dividend);
   shr(eax, 31);
   add(edx, eax);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32