[utils] Outline growing of GrowableBitVector

This change alone reduces the overall compile time of the reproducer
from the linked issue by >30%.

R=jkummerow@chromium.org

Bug: v8:13063
Change-Id: I5ac69ab6ec2f1427b1511181664d34f4b1d26f93
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3760451Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81714}

src/utils/bit-vector.h

@@ -342,7 +342,7 @@ class GrowableBitVector {
   }
 
   void Add(int value, Zone* zone) {
-    EnsureCapacity(value, zone);
+    if (V8_UNLIKELY(!InBitsRange(value))) Grow(value, zone);
     bits_.Add(value);
   }
 
@@ -363,12 +363,12 @@ class GrowableBitVector {
 
   bool InBitsRange(int value) const { return bits_.length() > value; }
 
-  void EnsureCapacity(int value, Zone* zone) {
-    if (InBitsRange(value)) return;
+  V8_NOINLINE void Grow(int needed_value, Zone* zone) {
+    DCHECK(!InBitsRange(needed_value));
     int new_length =
-        base::bits::RoundUpToPowerOfTwo32(static_cast<uint32_t>(value));
+        base::bits::RoundUpToPowerOfTwo32(static_cast<uint32_t>(needed_value));
     new_length = std::min(new_length, kInitialLength);
-    while (new_length <= value) new_length *= 2;
+    while (new_length <= needed_value) new_length *= 2;
     bits_.Resize(new_length, zone);
   }