PPC/s390: [wasm-simd][liftoff] Implement i32x4.splat

Port c10153b4

R=zhin@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: I6668e7d7b260b62838d609e27e240bb670977250
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2030744Reviewed-by: Joran Siu <joransiu@ca.ibm.com>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#66052}

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

@@ -522,6 +522,11 @@ void LiftoffAssembler::emit_f32x4_splat(LiftoffRegister dst,
   bailout(kUnsupportedArchitecture, "emit_f32x4_splat");
 }
 
+void LiftoffAssembler::emit_i32x4_splat(LiftoffRegister dst,
+                                        LiftoffRegister src) {
+  bailout(kUnsupportedArchitecture, "emit_i32x4_splat");
+}
+
 void LiftoffAssembler::StackCheck(Label* ool_code, Register limit_address) {
   bailout(kUnsupportedArchitecture, "StackCheck");
 }

src/wasm/baseline/s390/liftoff-assembler-s390.h

@@ -526,6 +526,11 @@ void LiftoffAssembler::emit_f32x4_splat(LiftoffRegister dst,
   bailout(kUnsupportedArchitecture, "emit_f32x4_splat");
 }
 
+void LiftoffAssembler::emit_i32x4_splat(LiftoffRegister dst,
+                                        LiftoffRegister src) {
+  bailout(kUnsupportedArchitecture, "emit_i32x4_splat");
+}
+
 void LiftoffAssembler::StackCheck(Label* ool_code, Register limit_address) {
   bailout(kUnsupportedArchitecture, "StackCheck");
 }