PPC [liftoff]: Implement push/pop for Simd128 regs

Change-Id: I28747c49422280a7fd02ce771bd4f7c6ec60002c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3840820
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Reviewed-by: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/main@{#82605}

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

@@ -3028,11 +3028,14 @@ void LiftoffAssembler::AssertUnreachable(AbortReason reason) {
 
 void LiftoffAssembler::PushRegisters(LiftoffRegList regs) {
   MultiPush(regs.GetGpList());
-  MultiPushDoubles(regs.GetFpList());
+  DoubleRegList fp_regs = regs.GetFpList();
+  MultiPushF64AndV128(fp_regs, Simd128RegList::FromBits(fp_regs.bits()), ip,
+                      r0);
 }
 
 void LiftoffAssembler::PopRegisters(LiftoffRegList regs) {
-  MultiPopDoubles(regs.GetFpList());
+  DoubleRegList fp_regs = regs.GetFpList();
+  MultiPopF64AndV128(fp_regs, Simd128RegList::FromBits(fp_regs.bits()), ip, r0);
   MultiPop(regs.GetGpList());
 }