Fix various typos (and add one DCHECK)

A random grab-bag of trivial fixes I came across while working on
another CL.

Bug: v8:8888
Change-Id: I6e46e1fe5a547854d8afbac19f7e049f1661c406
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2388113
Auto-Submit: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69675}

src/codegen/compiler.cc

@@ -1026,8 +1026,8 @@ MaybeHandle<Code> GetOptimizedCode(Handle<JSFunction> function,
   // turbo_filter.
   if (!FLAG_opt || !shared->PassesFilter(FLAG_turbo_filter)) return {};
 
-  // If code was pending optimization for testing, delete remove the entry
-  // from the table that was preventing the bytecode from being flushed
+  // If code was pending optimization for testing, remove the entry from the
+  // table that was preventing the bytecode from being flushed.
   if (V8_UNLIKELY(FLAG_testing_d8_test_runner)) {
     PendingOptimizationTable::FunctionWasOptimized(isolate, function);
   }
@@ -1073,7 +1073,7 @@ MaybeHandle<Code> GetOptimizedCode(Handle<JSFunction> function,
                                             has_script, osr_offset, osr_frame));
   OptimizedCompilationInfo* compilation_info = job->compilation_info();
 
-  // Prepare the job and launch cocncurrent compilation, or compile now.
+  // Prepare the job and launch concurrent compilation, or compile now.
   if (mode == ConcurrencyMode::kConcurrent) {
     if (GetOptimizedCodeLater(std::move(job), isolate, compilation_info,
                               code_kind, function)) {

src/compiler/backend/code-generator.h

@@ -310,11 +310,11 @@ class V8_EXPORT_PRIVATE CodeGenerator final : public GapResolver::Assembler {
 
   static bool IsValidPush(InstructionOperand source, PushTypeFlags push_type);
 
-  // Generate a list moves from an instruction that are candidates to be turned
-  // into push instructions on platforms that support them. In general, the list
-  // of push candidates are moves to a set of contiguous destination
+  // Generate a list of moves from an instruction that are candidates to be
+  // turned into push instructions on platforms that support them. In general,
+  // the list of push candidates are moves to a set of contiguous destination
   // InstructionOperand locations on the stack that don't clobber values that
-  // are needed for resolve the gap or use values generated by the gap,
+  // are needed to resolve the gap or use values generated by the gap,
   // i.e. moves that can be hoisted together before the actual gap and assembled
   // together.
   static void GetPushCompatibleMoves(Instruction* instr,

src/compiler/linkage.cc

@@ -103,6 +103,7 @@ int CallDescriptor::GetStackParameterDelta(
       // of padding.
       ++stack_param_delta;
     } else {
+      DCHECK_NE(tail_caller_slots_above_sp % 2, 0);
       // The delta is odd because of the caller. We already have one slot of
       // padding that we can reuse for arguments, so we will need one fewer
       // slot.

src/execution/runtime-profiler.cc

@@ -80,7 +80,7 @@ void TraceInOptimizationQueue(JSFunction function) {
   if (FLAG_trace_opt_verbose) {
     PrintF("[function ");
     function.PrintName();
-    PrintF(" has been marked manually for optimization]\n");
+    PrintF(" is already in optimization queue]\n");
   }
 }