deps: V8: cherry-pick a5cea1bfc38c

Original commit message:

    Mark Node::opcode() and Operator::opcode() as constexpr.

    Without the explicit constexpr keyword, Clang seems to be able to treat
    these methods as constexpr, whereas MSVC will not.

    Bug: v8:11760
    Change-Id: I9f6492f38fb50dcaf7a4f09da0bd79c0da6a50eb
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2912916
    Reviewed-by: Clemens Backes <clemensb@chromium.org>
    Reviewed-by: Maya Lekova <mslekova@chromium.org>
    Commit-Queue: Lei Zhang <thestig@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#74791}

Refs: v8/v8@a5cea1b

Backport-PR-URL: #39470
PR-URL: #38990
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Robert Nagy <ronagy@icloud.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

common.gypi

@@ -36,7 +36,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.10',
+    'v8_embedder_string': '-node.11',
 
     ##### V8 defaults for Node.js #####
 

deps/v8/src/compiler/node.h

@@ -50,7 +50,7 @@ class V8_EXPORT_PRIVATE Node final {
 
   const Operator* op() const { return op_; }
 
-  IrOpcode::Value opcode() const {
+  constexpr IrOpcode::Value opcode() const {
     DCHECK_GE(IrOpcode::kLast, op_->opcode());
     return static_cast<IrOpcode::Value>(op_->opcode());
   }

deps/v8/src/compiler/operator.h

@@ -73,7 +73,7 @@ class V8_EXPORT_PRIVATE Operator : public NON_EXPORTED_BASE(ZoneObject) {
   // A small integer unique to all instances of a particular kind of operator,
   // useful for quick matching for specific kinds of operators. For fast access
   // the opcode is stored directly in the operator object.
-  Opcode opcode() const { return opcode_; }
+  constexpr Opcode opcode() const { return opcode_; }
 
   // Returns a constant string representing the mnemonic of the operator,
   // without the static parameters. Useful for debugging.