Remove SIMD.js from V8.

src/crankshaft/mips/lithium-codegen-mips.cc

Index: src/crankshaft/mips/lithium-codegen-mips.cc
diff --git a/src/crankshaft/mips/lithium-codegen-mips.cc b/src/crankshaft/mips/lithium-codegen-mips.cc
index 20893e5aa268d278702886211b95bd3a80cbe47c..6e03e46bd59f430fa7d2bdeb60c11f2984fabf98 100644
--- a/src/crankshaft/mips/lithium-codegen-mips.cc
+++ b/src/crankshaft/mips/lithium-codegen-mips.cc
@@ -2025,14 +2025,6 @@ void LCodeGen::DoBranch(LBranch* instr) {
         __ Branch(instr->TrueLabel(chunk_), eq, scratch, Operand(SYMBOL_TYPE));
       }
 
-      if (expected & ToBooleanHint::kSimdValue) {
-        // SIMD value -> true.
-        const Register scratch = scratch1();
-        __ lbu(scratch, FieldMemOperand(map, Map::kInstanceTypeOffset));
-        __ Branch(instr->TrueLabel(chunk_), eq, scratch,
-                  Operand(SIMD128_VALUE_TYPE));
-      }
-
       if (expected & ToBooleanHint::kHeapNumber) {
         // heap number -> false iff +0, -0, or NaN.
         DoubleRegister dbl_scratch = double_scratch0();
@@ -5170,19 +5162,6 @@ Condition LCodeGen::EmitTypeofIs(Label* true_label,
     *cmp2 = Operand(zero_reg);
     final_branch_condition = eq;
 
-// clang-format off
-#define SIMD128_TYPE(TYPE, Type, type, lane_count, lane_type)        \
-  } else if (String::Equals(type_name, factory->type##_string())) {  \
-    __ JumpIfSmi(input, false_label);                                \
-    __ lw(input, FieldMemOperand(input, HeapObject::kMapOffset));    \
-    __ LoadRoot(at, Heap::k##Type##MapRootIndex);                    \
-    *cmp1 = input;                                                   \
-    *cmp2 = Operand(at);                                             \
-    final_branch_condition = eq;
-  SIMD128_TYPES(SIMD128_TYPE)
-#undef SIMD128_TYPE
-    // clang-format on
-
   } else {
     *cmp1 = at;
     *cmp2 = Operand(zero_reg);  // Set to valid regs, to avoid caller assertion.