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[vm] Handle entry point object pool entries only in AOT

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Avoid touching stubs in JIT mode when reading object pool
as stubs may not be initialized yet. This may happen if
using a core-jit snapshot.

TEST=ci

Change-Id: I598ef2ca4b6b22fb1bb560ad25b6ada9939799a0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/216924
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
This commit is contained in:
Alexander Markov 2021-10-14 21:39:05 +00:00 committed by commit-bot@chromium.org
parent ff26406d72
commit bb06e649f4
1 changed files with 4 additions and 0 deletions
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4
runtime/vm/app_snapshot.cc
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@ -2381,6 +2381,7 @@ class ObjectPoolDeserializationCluster : public DeserializationCluster {
void ReadFill(Deserializer* d, bool primary) {
ASSERT(!is_canonical()); // Never canonical.
fill_position_ = d->position();
#if defined(DART_PRECOMPILED_RUNTIME)
const uint8_t immediate_bits =
ObjectPool::EncodeBits(ObjectPool::EntryType::kImmediate,
ObjectPool::Patchability::kPatchable);
@ -2392,6 +2393,7 @@ class ObjectPoolDeserializationCluster : public DeserializationCluster {
megamorphic_call_entry_point =
StubCode::MegamorphicCall().MonomorphicEntryPoint();
}
#endif // defined(DART_PRECOMPILED_RUNTIME)
for (intptr_t id = start_index_; id < stop_index_; id++) {
const intptr_t length = d->ReadUnsigned();
@ -2416,6 +2418,7 @@ class ObjectPoolDeserializationCluster : public DeserializationCluster {
entry.raw_value_ = static_cast<intptr_t>(new_entry);
break;
}
#if defined(DART_PRECOMPILED_RUNTIME)
case ObjectPool::EntryType::kSwitchableCallMissEntryPoint:
ASSERT(FLAG_use_bare_instructions);
pool->untag()->entry_bits()[j] = immediate_bits;
@ -2428,6 +2431,7 @@ class ObjectPoolDeserializationCluster : public DeserializationCluster {
entry.raw_value_ =
static_cast<intptr_t>(megamorphic_call_entry_point);
break;
#endif // defined(DART_PRECOMPILED_RUNTIME)
default:
UNREACHABLE();
}