[wasm-relaxed-simd][arm64] Implement relaxed min max

Bug: v8:12284
Change-Id: Iaa2b98029b46e5d22fac19bf2db5abd56f82670b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3272641Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78004}

src/compiler/backend/arm64/instruction-selector-arm64.cc

@@ -3554,11 +3554,15 @@ void InstructionSelector::VisitInt64AbsWithOverflow(Node* node) {
   V(F64x2Add, kArm64FAdd, 64)                          \
   V(F64x2Sub, kArm64FSub, 64)                          \
   V(F64x2Div, kArm64FDiv, 64)                          \
+  V(F64x2RelaxedMin, kArm64FMin, 64)                   \
+  V(F64x2RelaxedMax, kArm64FMax, 64)                   \
   V(F32x4Min, kArm64FMin, 32)                          \
   V(F32x4Max, kArm64FMax, 32)                          \
   V(F32x4Add, kArm64FAdd, 32)                          \
   V(F32x4Sub, kArm64FSub, 32)                          \
   V(F32x4Div, kArm64FDiv, 32)                          \
+  V(F32x4RelaxedMin, kArm64FMin, 32)                   \
+  V(F32x4RelaxedMax, kArm64FMax, 32)                   \
   V(I64x2Sub, kArm64ISub, 64)                          \
   V(I32x4GtU, kArm64IGtU, 32)                          \
   V(I32x4GeU, kArm64IGeU, 32)                          \

src/compiler/backend/instruction-selector.cc

@@ -2807,13 +2807,13 @@ void InstructionSelector::VisitI32x4RelaxedLaneSelect(Node* node) {
 void InstructionSelector::VisitI64x2RelaxedLaneSelect(Node* node) {
   UNIMPLEMENTED();
 }
-#endif  // !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_ARM64
-
-#if !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_IA32
 void InstructionSelector::VisitF32x4RelaxedMin(Node* node) { UNIMPLEMENTED(); }
 void InstructionSelector::VisitF32x4RelaxedMax(Node* node) { UNIMPLEMENTED(); }
 void InstructionSelector::VisitF64x2RelaxedMin(Node* node) { UNIMPLEMENTED(); }
 void InstructionSelector::VisitF64x2RelaxedMax(Node* node) { UNIMPLEMENTED(); }
+#endif  // !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_ARM64
+
+#if !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_IA32
 void InstructionSelector::VisitI32x4RelaxedTruncF64x2SZero(Node* node) {
   UNIMPLEMENTED();
 }

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

@@ -313,9 +313,7 @@ WASM_RELAXED_SIMD_TEST(I64x2RelaxedLaneSelect) {
   RelaxedLaneSelectTest<uint64_t, kElems>(execution_tier, v1, v2, s, expected,
                                           kExprI64x2RelaxedLaneSelect);
 }
-#endif  // V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_ARM64
 
-#if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_IA32
 WASM_RELAXED_SIMD_TEST(F32x4RelaxedMin) {
   RunF32x4BinOpTest(execution_tier, kExprF32x4RelaxedMin, Minimum);
 }
@@ -331,7 +329,9 @@ WASM_RELAXED_SIMD_TEST(F64x2RelaxedMin) {
 WASM_RELAXED_SIMD_TEST(F64x2RelaxedMax) {
   RunF64x2BinOpTest(execution_tier, kExprF64x2RelaxedMax, Maximum);
 }
+#endif  // V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_ARM64
 
+#if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_IA32
 namespace {
 // For relaxed trunc instructions, don't test out of range values.
 // FloatType comes later so caller can rely on template argument deduction and