ppc64: [baseline] fix constant pool issue

Change-Id: Ifbfa391482215ed13954422fef028a5697ac6bb8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3663149Reviewed-by: Milad Farazmand <mfarazma@redhat.com>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/main@{#80726}

src/builtins/ppc/builtins-ppc.cc

@@ -1464,7 +1464,11 @@ void Builtins::Generate_BaselineOutOfLinePrologue(MacroAssembler* masm) {
     ASM_CODE_COMMENT_STRING(masm, "Optimized marker check");
 
     // Drop the frame created by the baseline call.
-    __ Pop(r0, fp);
+    if (FLAG_enable_embedded_constant_pool) {
+      __ Pop(r0, fp, kConstantPoolRegister);
+    } else {
+      __ Pop(r0, fp);
+    }
     __ mtlr(r0);
     MaybeOptimizeCodeOrTailCallOptimizedCodeSlot(masm, optimization_state,
                                                  feedback_vector);