[wasm] Implement first set of SIMD I8x16 ops

src/compiler/x64/instruction-selector-x64.cc

 // Copyright 2014 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.
 
 #include <algorithm>
 
 #include "src/base/adapters.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
@@ skipping 2422 matching lines @@
   }
 VISIT_ATOMIC_BINOP(Add)
 VISIT_ATOMIC_BINOP(Sub)
 VISIT_ATOMIC_BINOP(And)
 VISIT_ATOMIC_BINOP(Or)
 VISIT_ATOMIC_BINOP(Xor)
 #undef VISIT_ATOMIC_BINOP
 
 #define SIMD_TYPES(V) \
   V(I32x4)            \
-  V(I16x8)
+  V(I16x8)            \
+  V(I8x16)
 
 #define SIMD_FORMAT_LIST(V) \
   V(32x4)                   \
-  V(16x8)
+  V(16x8)                   \
+  V(8x16)
 
 #define SIMD_ZERO_OP_LIST(V) \
   V(S128Zero)                \
   V(S1x4Zero)                \
   V(S1x8Zero)                \
   V(S1x16Zero)
 
 #define SIMD_BINOP_LIST(V) \
   V(I32x4Add)              \
   V(I32x4Sub)              \
   V(I32x4Mul)              \
   V(I32x4MinS)             \
   V(I32x4MaxS)             \
   V(I32x4Eq)               \
   V(I32x4Ne)               \
   V(I32x4MinU)             \
   V(I32x4MaxU)             \
   V(I16x8Add)              \
   V(I16x8AddSaturateS)     \
   V(I16x8Sub)              \
   V(I16x8SubSaturateS)     \
   V(I16x8Mul)              \
   V(I16x8MinS)             \
   V(I16x8MaxS)             \
   V(I16x8Eq)               \
   V(I16x8Ne)               \
   V(I16x8AddSaturateU)     \
   V(I16x8SubSaturateU)     \
   V(I16x8MinU)             \
-  V(I16x8MaxU)
+  V(I16x8MaxU)             \
+  V(I8x16Add)              \
+  V(I8x16AddSaturateS)     \
+  V(I8x16Sub)              \
+  V(I8x16SubSaturateS)     \
+  V(I8x16MinS)             \
+  V(I8x16MaxS)             \
+  V(I8x16Eq)               \
+  V(I8x16Ne)               \
+  V(I8x16AddSaturateU)     \
+  V(I8x16SubSaturateU)     \
+  V(I8x16MinU)             \
+  V(I8x16MaxU)
 
 #define SIMD_SHIFT_OPCODES(V) \
   V(I32x4Shl)                 \
   V(I32x4ShrS)                \
   V(I32x4ShrU)                \
   V(I16x8Shl)                 \
   V(I16x8ShrS)                \
   V(I16x8ShrU)
 
 #define VISIT_SIMD_SPLAT(Type)                               \
@@ skipping 97 matching lines @@
 // static
 MachineOperatorBuilder::AlignmentRequirements
 InstructionSelector::AlignmentRequirements() {
   return MachineOperatorBuilder::AlignmentRequirements::
       FullUnalignedAccessSupport();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8