[wasm-simd][liftoff] Implement i8x16 ge

I missed out the i8x16 implementation in https://crrev.com/c/2169017.

Bug: v8:9909
Change-Id: I3264e9dce51acca262ad71885379b320008555b5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2173657Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67507}

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

@@ -2453,12 +2453,14 @@ void LiftoffAssembler::emit_i8x16_gt_u(LiftoffRegister dst, LiftoffRegister lhs,
 
 void LiftoffAssembler::emit_i8x16_ge_s(LiftoffRegister dst, LiftoffRegister lhs,
                                        LiftoffRegister rhs) {
-  bailout(kSimd, "i8x16ge_s");
+  vcge(NeonS8, liftoff::GetSimd128Register(dst),
+       liftoff::GetSimd128Register(lhs), liftoff::GetSimd128Register(rhs));
 }
 
 void LiftoffAssembler::emit_i8x16_ge_u(LiftoffRegister dst, LiftoffRegister lhs,
                                        LiftoffRegister rhs) {
-  bailout(kSimd, "i8x16ge_u");
+  vcge(NeonU8, liftoff::GetSimd128Register(dst),
+       liftoff::GetSimd128Register(lhs), liftoff::GetSimd128Register(rhs));
 }
 
 void LiftoffAssembler::emit_i16x8_eq(LiftoffRegister dst, LiftoffRegister lhs,

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

@@ -1552,12 +1552,12 @@ void LiftoffAssembler::emit_i8x16_gt_u(LiftoffRegister dst, LiftoffRegister lhs,
 
 void LiftoffAssembler::emit_i8x16_ge_s(LiftoffRegister dst, LiftoffRegister lhs,
                                        LiftoffRegister rhs) {
-  bailout(kSimd, "i8x16ge_s");
+  Cmge(dst.fp().V16B(), lhs.fp().V16B(), rhs.fp().V16B());
 }
 
 void LiftoffAssembler::emit_i8x16_ge_u(LiftoffRegister dst, LiftoffRegister lhs,
                                        LiftoffRegister rhs) {
-  bailout(kSimd, "i8x16ge_u");
+  Cmhs(dst.fp().V16B(), lhs.fp().V16B(), rhs.fp().V16B());
 }
 
 void LiftoffAssembler::emit_i16x8_eq(LiftoffRegister dst, LiftoffRegister lhs,