[wasm-simd] Move i64x2.bitmask out of post-mvp

Also remove some ifdefs since it is implemented on all architectures.

Bug: v8:10997
Change-Id: I06f82e2c67219a8990bdd7c78e63b1300c8f34d2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2620907Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72024}

src/compiler/backend/instruction-selector.cc

@@ -2816,14 +2816,6 @@ void InstructionSelector::VisitI64x2SignSelect(Node* node) { UNIMPLEMENTED(); }
 #endif  // !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_ARM64
         // && !V8_TARGET_ARCH_ARM
 
-#if !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_ARM64 && !V8_TARGET_ARCH_ARM && \
-    !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_MIPS64 && !V8_TARGET_ARCH_MIPS
-// TODO(v8:10997) Prototype i64x2.bitmask.
-void InstructionSelector::VisitI64x2BitMask(Node* node) { UNIMPLEMENTED(); }
-#endif  // !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_ARM64 && !V8_TARGET_ARCH_ARM
-        // && !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_MIPS64
-        // && !V8_TARGET_ARCH_MIPS
-
 void InstructionSelector::VisitFinishRegion(Node* node) { EmitIdentity(node); }
 
 void InstructionSelector::VisitParameter(Node* node) {

src/wasm/wasm-opcodes.h

@@ -430,6 +430,7 @@ bool V8_EXPORT_PRIVATE IsJSCompatibleSignature(const FunctionSig* sig,
   V(I32x4ExtMulLowI16x8U, 0xfdbe, s_ss)      \
   V(I32x4ExtMulHighI16x8U, 0xfdbf, s_ss)     \
   V(I64x2Neg, 0xfdc1, s_s)                   \
+  V(I64x2BitMask, 0xfdc4, i_s)               \
   V(I64x2Shl, 0xfdcb, s_si)                  \
   V(I64x2ShrS, 0xfdcc, s_si)                 \
   V(I64x2ShrU, 0xfdcd, s_si)                 \
@@ -501,7 +502,6 @@ bool V8_EXPORT_PRIVATE IsJSCompatibleSignature(const FunctionSig* sig,
   V(I16x8ExtAddPairwiseI8x16U, 0xfdc3, s_s) \
   V(I64x2Eq, 0xfdc0, s_ss)                  \
   V(F32x4Qfma, 0xfdb4, s_sss)               \
-  V(I64x2BitMask, 0xfdc4, i_s)              \
   V(I64x2SConvertI32x4Low, 0xfdc7, s_s)     \
   V(I64x2SConvertI32x4High, 0xfdc8, s_s)    \
   V(I64x2UConvertI32x4Low, 0xfdc9, s_s)     \

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

@@ -1635,11 +1635,7 @@ WASM_SIMD_TEST(I32x4BitMask) {
   }
 }
 
-// TODO(v8:10997) Prototyping i64x2.bitmask.
-#if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64 || V8_TARGET_ARCH_ARM || \
-    V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_MIPS64 || V8_TARGET_ARCH_MIPS
 WASM_SIMD_TEST_NO_LOWERING(I64x2BitMask) {
-  FLAG_SCOPE(wasm_simd_post_mvp);
   WasmRunner<int32_t, int64_t> r(execution_tier, lower_simd);
   byte value1 = r.AllocateLocal(kWasmS128);
 
@@ -1655,8 +1651,6 @@ WASM_SIMD_TEST_NO_LOWERING(I64x2BitMask) {
     CHECK_EQ(actual, expected);
   }
 }
-#endif  // V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64 || V8_TARGET_ARCH_ARM ||
-        // V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_MIPS64 || V8_TARGET_ARCH_MIPS
 
 WASM_SIMD_TEST(I8x16Splat) {
   WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);