[wasm-simd][arm64][liftoff] Implement extended add pairwise

Bug: v8:11086
Change-Id: I67f7aaeb1151b14678d6257a195efd19c86c5fbf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2707775Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73028}

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

@@ -2273,12 +2273,12 @@ void LiftoffAssembler::emit_i32x4_dot_i16x8_s(LiftoffRegister dst,
 
 void LiftoffAssembler::emit_i32x4_extadd_pairwise_i16x8_s(LiftoffRegister dst,
                                                           LiftoffRegister src) {
-  bailout(kSimd, "i32x4.extadd_pairwise_i16x8_s");
+  Saddlp(dst.fp().V4S(), src.fp().V8H());
 }
 
 void LiftoffAssembler::emit_i32x4_extadd_pairwise_i16x8_u(LiftoffRegister dst,
                                                           LiftoffRegister src) {
-  bailout(kSimd, "i32x4.extadd_pairwise_i16x8_u");
+  Uaddlp(dst.fp().V4S(), src.fp().V8H());
 }
 
 void LiftoffAssembler::emit_i32x4_extmul_low_i16x8_s(LiftoffRegister dst,
@@ -3023,12 +3023,12 @@ void LiftoffAssembler::emit_i16x8_abs(LiftoffRegister dst,
 
 void LiftoffAssembler::emit_i16x8_extadd_pairwise_i8x16_s(LiftoffRegister dst,
                                                           LiftoffRegister src) {
-  bailout(kSimd, "i16x8.extadd_pairwise_i8x16_s");
+  Saddlp(dst.fp().V8H(), src.fp().V16B());
 }
 
 void LiftoffAssembler::emit_i16x8_extadd_pairwise_i8x16_u(LiftoffRegister dst,
                                                           LiftoffRegister src) {
-  bailout(kSimd, "i16x8.extadd_pairwise_i8x16_u");
+  Uaddlp(dst.fp().V8H(), src.fp().V16B());
 }
 
 void LiftoffAssembler::emit_i16x8_extmul_low_i8x16_s(LiftoffRegister dst,