diff --git a/src/compiler/backend/instruction-selector.cc b/src/compiler/backend/instruction-selector.cc
index a6dd6d8689..ed0bf5e5df 100644
--- a/src/compiler/backend/instruction-selector.cc
+++ b/src/compiler/backend/instruction-selector.cc
@@ -2802,48 +2802,6 @@ void InstructionSelector::VisitF32x4Qfms(Node* node) { UNIMPLEMENTED(); }
         // && !V8_TARGET_ARCH_ARM64 && !V8_TARGET_ARCH_IA32 &&
         // !V8_TARGET_ARCH_RISCV64 && !V8_TARGET_ARCH_RISCV32
 
-#if !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_ARM64 && \
-    !V8_TARGET_ARCH_RISCV32 && !V8_TARGET_ARCH_RISCV64 && !V8_TARGET_ARCH_ARM
-void InstructionSelector::VisitI8x16RelaxedLaneSelect(Node* node) {
-  UNIMPLEMENTED();
-}
-void InstructionSelector::VisitI16x8RelaxedLaneSelect(Node* node) {
-  UNIMPLEMENTED();
-}
-void InstructionSelector::VisitI32x4RelaxedLaneSelect(Node* node) {
-  UNIMPLEMENTED();
-}
-void InstructionSelector::VisitI64x2RelaxedLaneSelect(Node* node) {
-  UNIMPLEMENTED();
-}
-void InstructionSelector::VisitF32x4RelaxedMin(Node* node) { UNIMPLEMENTED(); }
-void InstructionSelector::VisitF32x4RelaxedMax(Node* node) { UNIMPLEMENTED(); }
-void InstructionSelector::VisitF64x2RelaxedMin(Node* node) { UNIMPLEMENTED(); }
-void InstructionSelector::VisitF64x2RelaxedMax(Node* node) { UNIMPLEMENTED(); }
-void InstructionSelector::VisitI32x4RelaxedTruncF64x2SZero(Node* node) {
-  UNIMPLEMENTED();
-}
-void InstructionSelector::VisitI32x4RelaxedTruncF64x2UZero(Node* node) {
-  UNIMPLEMENTED();
-}
-void InstructionSelector::VisitI32x4RelaxedTruncF32x4S(Node* node) {
-  UNIMPLEMENTED();
-}
-void InstructionSelector::VisitI32x4RelaxedTruncF32x4U(Node* node) {
-  UNIMPLEMENTED();
-}
-#endif  // !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_ARM64
-        // && !V8_TARGET_ARCH_RISCV64 && !V8_TARGET_ARM &&
-        // !V8_TARGET_ARCH_RISCV32
-
-#if !V8_TARGET_ARCH_ARM64 && !V8_TARGET_ARCH_ARM && !V8_TARGET_ARCH_X64 && \
-    !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_RISCV64 && !V8_TARGET_ARCH_RISCV32
-void InstructionSelector::VisitI16x8RelaxedQ15MulRS(Node* node) {
-  UNIMPLEMENTED();
-}
-#endif  // !V8_TARGET_ARCH_ARM64 && !V8_TARGET_ARCH_ARM !V8_TARGET_ARCH_X64 &&
-        // !V8_TARGET_ARCH_IA32
-
 #if !V8_TARGET_ARCH_ARM64
 void InstructionSelector::VisitI16x8DotI8x16I7x16S(Node* node) {
   UNIMPLEMENTED();
diff --git a/test/cctest/wasm/test-run-wasm-relaxed-simd.cc b/test/cctest/wasm/test-run-wasm-relaxed-simd.cc
index 5613f09a94..345014de2d 100644
--- a/test/cctest/wasm/test-run-wasm-relaxed-simd.cc
+++ b/test/cctest/wasm/test-run-wasm-relaxed-simd.cc
@@ -229,8 +229,6 @@ WASM_RELAXED_SIMD_TEST(F64x2Qfms) {
 #endif  // V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64 || V8_TARGET_ARCH_S390X ||
         // V8_TARGET_ARCH_PPC64 || V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_RISCV64
 
-#if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_ARM64 || \
-    V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_RISCV64
 namespace {
 // Helper to convert an array of T into an array of uint8_t to be used a v128
 // constants.
@@ -436,8 +434,6 @@ WASM_RELAXED_SIMD_TEST(I16x8RelaxedQ15MulRS) {
     }
   }
 }
-#endif  // V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_ARM64 ||
-        // V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_RISCV64
 
 #if V8_TARGET_ARCH_ARM64
 WASM_RELAXED_SIMD_TEST(I16x8DotI8x16I7x16S) {