[wasm-simd][liftoff][arm][arm64] Implement sub saturate

Bug: v8:9909
Change-Id: I6e367b98c0f85c740947d72e9b0a29870e9e03e2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2147602Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67156}

src/wasm/baseline/arm/liftoff-assembler-arm.h

@@ -1946,13 +1946,15 @@ void LiftoffAssembler::emit_i16x8_sub(LiftoffRegister dst, LiftoffRegister lhs,
 void LiftoffAssembler::emit_i16x8_sub_saturate_s(LiftoffRegister dst,
                                                  LiftoffRegister lhs,
                                                  LiftoffRegister rhs) {
-  bailout(kSimd, "i16x8subsaturate_s");
+  vqsub(NeonS16, liftoff::GetSimd128Register(dst),
+        liftoff::GetSimd128Register(lhs), liftoff::GetSimd128Register(rhs));
 }
 
 void LiftoffAssembler::emit_i16x8_sub_saturate_u(LiftoffRegister dst,
                                                  LiftoffRegister lhs,
                                                  LiftoffRegister rhs) {
-  bailout(kSimd, "i16x8subsaturate_u");
+  vqsub(NeonU16, liftoff::GetSimd128Register(dst),
+        liftoff::GetSimd128Register(lhs), liftoff::GetSimd128Register(rhs));
 }
 
 void LiftoffAssembler::emit_i16x8_mul(LiftoffRegister dst, LiftoffRegister lhs,
@@ -2073,13 +2075,15 @@ void LiftoffAssembler::emit_i8x16_sub(LiftoffRegister dst, LiftoffRegister lhs,
 void LiftoffAssembler::emit_i8x16_sub_saturate_s(LiftoffRegister dst,
                                                  LiftoffRegister lhs,
                                                  LiftoffRegister rhs) {
-  bailout(kSimd, "i8x16subsaturate_s");
+  vqsub(NeonS8, liftoff::GetSimd128Register(dst),
+        liftoff::GetSimd128Register(lhs), liftoff::GetSimd128Register(rhs));
 }
 
 void LiftoffAssembler::emit_i8x16_sub_saturate_u(LiftoffRegister dst,
                                                  LiftoffRegister lhs,
                                                  LiftoffRegister rhs) {
-  bailout(kSimd, "i8x16subsaturate_u");
+  vqsub(NeonU8, liftoff::GetSimd128Register(dst),
+        liftoff::GetSimd128Register(lhs), liftoff::GetSimd128Register(rhs));
 }
 
 void LiftoffAssembler::emit_i8x16_mul(LiftoffRegister dst, LiftoffRegister lhs,

src/wasm/baseline/arm64/liftoff-assembler-arm64.h

@@ -1369,13 +1369,13 @@ void LiftoffAssembler::emit_i16x8_sub(LiftoffRegister dst, LiftoffRegister lhs,
 void LiftoffAssembler::emit_i16x8_sub_saturate_s(LiftoffRegister dst,
                                                  LiftoffRegister lhs,
                                                  LiftoffRegister rhs) {
-  bailout(kSimd, "i16x8subsaturate_s");
+  Sqsub(dst.fp().V8H(), lhs.fp().V8H(), rhs.fp().V8H());
 }
 
 void LiftoffAssembler::emit_i16x8_sub_saturate_u(LiftoffRegister dst,
                                                  LiftoffRegister lhs,
                                                  LiftoffRegister rhs) {
-  bailout(kSimd, "i16x8subsaturate_u");
+  Uqsub(dst.fp().V8H(), lhs.fp().V8H(), rhs.fp().V8H());
 }
 
 void LiftoffAssembler::emit_i16x8_mul(LiftoffRegister dst, LiftoffRegister lhs,
@@ -1464,13 +1464,13 @@ void LiftoffAssembler::emit_i8x16_sub(LiftoffRegister dst, LiftoffRegister lhs,
 void LiftoffAssembler::emit_i8x16_sub_saturate_s(LiftoffRegister dst,
                                                  LiftoffRegister lhs,
                                                  LiftoffRegister rhs) {
-  bailout(kSimd, "i8x16subsaturate_s");
+  Sqsub(dst.fp().V16B(), lhs.fp().V16B(), rhs.fp().V16B());
 }
 
 void LiftoffAssembler::emit_i8x16_sub_saturate_u(LiftoffRegister dst,
                                                  LiftoffRegister lhs,
                                                  LiftoffRegister rhs) {
-  bailout(kSimd, "i8x16subsaturate_u");
+  Uqsub(dst.fp().V16B(), lhs.fp().V16B(), rhs.fp().V16B());
 }
 
 void LiftoffAssembler::emit_i8x16_mul(LiftoffRegister dst, LiftoffRegister lhs,