[wasm-simd] Move i32x4.dot_i16x8_s out of post-mvp

This is merged into the proposal, move it out of post-mvp flags, and
remove any ifdefs guarding it.

Bug: v8:10993
Change-Id: I4c82e3fc17c97735d5417fa4a5d85d7f091fbb8b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2453457Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70552}

src/compiler/backend/instruction-selector.cc

@@ -2671,13 +2671,6 @@ void InstructionSelector::VisitF32x4Qfms(Node* node) { UNIMPLEMENTED(); }
 #endif  // !V8_TARGET_ARCH_ARM64
 #endif  // !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_S390X
 
-#if !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_ARM64 && \
-    !V8_TARGET_ARCH_ARM
-// TODO(v8:10583) Prototype i32x4.dot_i16x8_s
-void InstructionSelector::VisitI32x4DotI16x8S(Node* node) { UNIMPLEMENTED(); }
-#endif  // !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_ARM64
-        // && !V8_TARGET_ARCH_ARM
-
 #if !V8_TARGET_ARCH_ARM64
 // TODO(v8:10971) Prototype i16x8.q15mulr_sat_s
 void InstructionSelector::VisitI16x8Q15MulRSatS(Node* node) { UNIMPLEMENTED(); }

src/wasm/wasm-opcodes.h

@@ -416,6 +416,7 @@ bool V8_EXPORT_PRIVATE IsJSCompatibleSignature(const FunctionSig* sig,
   V(I32x4MinU, 0xfdb7, s_ss)                 \
   V(I32x4MaxS, 0xfdb8, s_ss)                 \
   V(I32x4MaxU, 0xfdb9, s_ss)                 \
+  V(I32x4DotI16x8S, 0xfdba, s_ss)            \
   V(I64x2Neg, 0xfdc1, s_s)                   \
   V(I64x2Shl, 0xfdcb, s_si)                  \
   V(I64x2ShrS, 0xfdcc, s_si)                 \
@@ -482,7 +483,6 @@ bool V8_EXPORT_PRIVATE IsJSCompatibleSignature(const FunctionSig* sig,
   V(F64x2Qfms, 0xfdff, s_sss)            \
   V(I16x8AddHoriz, 0xfdaf, s_ss)         \
   V(I32x4AddHoriz, 0xfdb0, s_ss)         \
-  V(I32x4DotI16x8S, 0xfdba, s_ss)        \
   V(F32x4AddHoriz, 0xfdb2, s_ss)         \
   V(F32x4RecipApprox, 0xfdb3, s_s)       \
   V(F32x4RecipSqrtApprox, 0xfdbc, s_s)

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

@@ -2229,12 +2229,7 @@ WASM_SIMD_TEST_NO_LOWERING(I16x8Q15MulRSatS) {
 }
 #endif  // V8_TARGET_ARCH_ARM64
 
-// TODO(v8:10583) Prototype i32x4.dot_i16x8_s
-#if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_ARM64 || \
-    V8_TARGET_ARCH_ARM
 WASM_SIMD_TEST_NO_LOWERING(I32x4DotI16x8S) {
-  FLAG_SCOPE(wasm_simd_post_mvp);
-
   WasmRunner<int32_t, int16_t, int16_t> r(execution_tier, lower_simd);
   int32_t* g = r.builder().template AddGlobal<int32_t>(kWasmS128);
   byte value1 = 0, value2 = 1;
@@ -2258,8 +2253,6 @@ WASM_SIMD_TEST_NO_LOWERING(I32x4DotI16x8S) {
     }
   }
 }
-#endif  // V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_ARM64 ||
-        // V8_TARGET_ARCH_ARM
 
 void RunI16x8ShiftOpTest(TestExecutionTier execution_tier, LowerSimd lower_simd,
                          WasmOpcode opcode, Int16ShiftOp expected_op) {