[wasm-simd] Move v128 load32_zero load64_zero out of post-mvp

And remove all ifdefs guarding the tests.

Bug: v8:11038
Change-Id: I91487a4bd60b6f2e327d1c2348289e446d6e93d1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2501967Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70811}

src/wasm/function-body-decoder-impl.h

@@ -1742,12 +1742,6 @@ class WasmDecoder : public Decoder {
                                                 UINT32_MAX);
             return length + imm.length;
           }
-          case kExprS128Load32Zero:
-          case kExprS128Load64Zero: {
-            MemoryAccessImmediate<validate> imm(decoder, pc + length,
-                                                UINT32_MAX);
-            return length + imm.length;
-          }
           case kExprS128Load8Lane:
           case kExprS128Load16Lane:
           case kExprS128Load32Lane:
@@ -3535,16 +3529,10 @@ class WasmFullDecoder : public WasmDecoder<validate> {
       case kExprS128StoreMem:
         return DecodeStoreMem(StoreType::kS128Store, opcode_length);
       case kExprS128Load32Zero:
-        if (!CheckSimdPostMvp(opcode)) {
-          return 0;
-        }
         return DecodeLoadTransformMem(LoadType::kI32Load,
                                       LoadTransformationKind::kZeroExtend,
                                       opcode_length);
       case kExprS128Load64Zero:
-        if (!CheckSimdPostMvp(opcode)) {
-          return 0;
-        }
         return DecodeLoadTransformMem(LoadType::kI64Load,
                                       LoadTransformationKind::kZeroExtend,
                                       opcode_length);

src/wasm/wasm-opcodes.h

@@ -288,7 +288,9 @@ bool V8_EXPORT_PRIVATE IsJSCompatibleSignature(const FunctionSig* sig,
   V(S128Load16Splat, 0xfd08, s_i)  \
   V(S128Load32Splat, 0xfd09, s_i)  \
   V(S128Load64Splat, 0xfd0a, s_i)  \
-  V(S128StoreMem, 0xfd0b, v_is)
+  V(S128StoreMem, 0xfd0b, v_is)    \
+  V(S128Load32Zero, 0xfdfc, s_i)   \
+  V(S128Load64Zero, 0xfdfd, s_i)
 
 #define FOREACH_SIMD_CONST_OPCODE(V) V(S128Const, 0xfd0c, _)
 
@@ -460,8 +462,6 @@ bool V8_EXPORT_PRIVATE IsJSCompatibleSignature(const FunctionSig* sig,
   V(F64x2NearestInt, 0xfddf, s_s)
 
 #define FOREACH_SIMD_POST_MVP_MEM_OPCODE(V) \
-  V(S128Load32Zero, 0xfdfc, s_i)            \
-  V(S128Load64Zero, 0xfdfd, s_i)            \
   V(S128Load8Lane, 0xfd58, s_is)            \
   V(S128Load16Lane, 0xfd59, s_is)           \
   V(S128Load32Lane, 0xfd5a, s_is)           \

test/cctest/wasm/test-run-wasm-simd.cc

@@ -3696,13 +3696,9 @@ WASM_SIMD_TEST(S128Load32x2S) {
                                       kExprS128Load32x2S);
 }
 
-// TODO(v8:10713): Prototyping v128.load32_zero and v128.load64_zero.
-#if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64 || V8_TARGET_ARCH_IA32 || \
-    V8_TARGET_ARCH_ARM
 template <typename S>
 void RunLoadZeroTest(TestExecutionTier execution_tier, LowerSimd lower_simd,
                      WasmOpcode op) {
-  FLAG_SCOPE(wasm_simd_post_mvp);
   constexpr int lanes_s = kSimd128Size / sizeof(S);
   constexpr int mem_index = 16;  // Load from mem index 16 (bytes).
   constexpr S sentinel = S{-1};
@@ -3778,8 +3774,6 @@ WASM_SIMD_TEST_NO_LOWERING(S128Load32Zero) {
 WASM_SIMD_TEST_NO_LOWERING(S128Load64Zero) {
   RunLoadZeroTest<int64_t>(execution_tier, lower_simd, kExprS128Load64Zero);
 }
-#endif  // V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64 || V8_TARGET_ARCH_IA32 ||
-        // V8_TARGET_ARCH_ARM
 
 #if V8_TARGET_ARCH_X64
 // TODO(v8:10975): Prototyping load lane and store lane.