Reland "PPC/s390: [sparkplug][deoptimizer] Deoptimize to baseline."

This reverts commit d8c6b2ec.

Reason for revert: original cl has relanded

Original change's description:
> Revert "PPC/s390: [sparkplug][deoptimizer] Deoptimize to baseline."
>
> This reverts commit 94272ea5.
>
> Reason for revert: original port was reverted
>
> Original change's description:
> > PPC/s390: [sparkplug][deoptimizer] Deoptimize to baseline.
> >
> > Port bdcd7d79
> >
> > Original Commit Message:
> >
> >     If we have baseline code, deoptimize to baseline instead of the
> >     interpreter. The process is similar to deopting to the interpreter.
> >     We just use different builtins
> >     (BaselineEnterAtBytecode/BaselineEnterAtNextBytecode) instead of
> >     InterpreterEnterBytecodeDispatch/InterpreterEnterBytecodeAdvance, that
> >     patch an interpreter frame to a baseline frame and continue execution in
> >     baseline code (based on the deopt type, at the current or next
> >     bytecode).
> >
> > R=​pthier@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
> > BUG=
> > LOG=N
> >
> > Change-Id: I3230f3f3c6506230b2751a3389f10b022dec61a3
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2783022
> > Reviewed-by: Junliang Yan <junyan@redhat.com>
> > Commit-Queue: Milad Fa <mfarazma@redhat.com>
> > Cr-Commit-Position: refs/heads/master@{#73618}
>
> Change-Id: I903ad90099c4dc5f153d28aea9246933ac69972b
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2784002
> Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
> Commit-Queue: Milad Fa <mfarazma@redhat.com>
> Cr-Commit-Position: refs/heads/master@{#73630}

Change-Id: I7746f42472ae63e49770f491ae6b8ef7b596cfce
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2785380
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#73661}

src/builtins/ppc/builtins-ppc.cc

@@ -3432,6 +3432,16 @@ void Builtins::Generate_DeoptimizationEntry_Lazy(MacroAssembler* masm) {
   Generate_DeoptimizationEntry(masm, DeoptimizeKind::kLazy);
 }
 
+void Builtins::Generate_BaselineEnterAtBytecode(MacroAssembler* masm) {
+  // Implement on this platform, https://crrev.com/c/2695591.
+  __ bkpt(0);
+}
+
+void Builtins::Generate_BaselineEnterAtNextBytecode(MacroAssembler* masm) {
+  // Implement on this platform, https://crrev.com/c/2695591.
+  __ bkpt(0);
+}
+
 void Builtins::Generate_DynamicCheckMapsTrampoline(MacroAssembler* masm) {
   FrameScope scope(masm, StackFrame::MANUAL);
   __ EnterFrame(StackFrame::INTERNAL);

src/builtins/s390/builtins-s390.cc

@@ -3431,6 +3431,16 @@ void Builtins::Generate_DeoptimizationEntry_Lazy(MacroAssembler* masm) {
   Generate_DeoptimizationEntry(masm, DeoptimizeKind::kLazy);
 }
 
+void Builtins::Generate_BaselineEnterAtBytecode(MacroAssembler* masm) {
+  // Implement on this platform, https://crrev.com/c/2695591.
+  __ bkpt(0);
+}
+
+void Builtins::Generate_BaselineEnterAtNextBytecode(MacroAssembler* masm) {
+  // Implement on this platform, https://crrev.com/c/2695591.
+  __ bkpt(0);
+}
+
 void Builtins::Generate_DynamicCheckMapsTrampoline(MacroAssembler* masm) {
   FrameScope scope(masm, StackFrame::MANUAL);
   __ EnterFrame(StackFrame::INTERNAL);