Revert "[liftoff][tail-call] Add indirect tail calls"

This reverts commit 06bdd8d6.

Reason for revert: Speculative revert for arm64 sim CFI - https://ci.chromium.org/p/v8/builders/ci/V8%20Linux%20-%20arm64%20-%20sim%20-%20CFI/1474?

Original change's description:
> [liftoff][tail-call] Add indirect tail calls
> 
> R=​clemensb@chromium.org
> 
> Bug: v8:10693
> Change-Id: Ic71d873bf7099ba671b9db1e87392d54aeebd7cf
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2312096
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#68996}

TBR=clemensb@chromium.org,thibaudm@chromium.org

Change-Id: Ibdc64e20247758fb6bc96b4e5d13406adab968a7
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:10693
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2312786Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69003}

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

@@ -3616,11 +3616,6 @@ void LiftoffAssembler::CallIndirect(const wasm::FunctionSig* sig,
   Call(target);
 }
 
-void LiftoffAssembler::TailCallIndirect(Register target) {
-  DCHECK(target != no_reg);
-  Jump(target);
-}
-
 void LiftoffAssembler::CallRuntimeStub(WasmCode::RuntimeStubId sid) {
   // A direct call to a wasm runtime stub defined in this module.
   // Just encode the stub index. This will be patched at relocation.

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

@@ -2629,11 +2629,6 @@ void LiftoffAssembler::CallIndirect(const wasm::FunctionSig* sig,
   Call(target);
 }
 
-void LiftoffAssembler::TailCallIndirect(Register target) {
-  DCHECK(target.is_valid());
-  Jump(target);
-}
-
 void LiftoffAssembler::CallRuntimeStub(WasmCode::RuntimeStubId sid) {
   // A direct call to a wasm runtime stub defined in this module.
   // Just encode the stub index. This will be patched at relocation.

src/wasm/baseline/ia32/liftoff-assembler-ia32.h

@@ -4237,17 +4237,6 @@ void LiftoffAssembler::CallIndirect(const wasm::FunctionSig* sig,
   }
 }
 
-void LiftoffAssembler::TailCallIndirect(Register target) {
-  // Since we have more cache registers than parameter registers, the
-  // {LiftoffCompiler} should always be able to place {target} in a register.
-  DCHECK(target.is_valid());
-  if (FLAG_untrusted_code_mitigations) {
-    RetpolineJump(target);
-  } else {
-    jmp(target);
-  }
-}
-
 void LiftoffAssembler::CallRuntimeStub(WasmCode::RuntimeStubId sid) {
   // A direct call to a wasm runtime stub defined in this module.
   // Just encode the stub index. This will be patched at relocation.

src/wasm/baseline/liftoff-assembler.h

@@ -1097,7 +1097,6 @@ class LiftoffAssembler : public TurboAssembler {
   inline void CallIndirect(const FunctionSig* sig,
                            compiler::CallDescriptor* call_descriptor,
                            Register target);
-  inline void TailCallIndirect(Register target);
   inline void CallRuntimeStub(WasmCode::RuntimeStubId sid);
 
   // Reserve space in the current frame, store address to space in {addr}.

src/wasm/baseline/x64/liftoff-assembler-x64.h

@@ -3900,18 +3900,6 @@ void LiftoffAssembler::CallIndirect(const wasm::FunctionSig* sig,
   }
 }
 
-void LiftoffAssembler::TailCallIndirect(Register target) {
-  if (target == no_reg) {
-    popq(kScratchRegister);
-    target = kScratchRegister;
-  }
-  if (FLAG_untrusted_code_mitigations) {
-    RetpolineJump(target);
-  } else {
-    jmp(target);
-  }
-}
-
 void LiftoffAssembler::CallRuntimeStub(WasmCode::RuntimeStubId sid) {
   // A direct call to a wasm runtime stub defined in this module.
   // Just encode the stub index. This will be patched at relocation.