runtime/vm/stub_code_arm64.cc - Issue 1998263002: Include multiplication in the megamorphic cache hash to avoid cid ranges overlapping modulo table s…

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Unified Diff: runtime/vm/stub_code_arm64.cc

Issue 1998263002: Include multiplication in the megamorphic cache hash to avoid cid ranges overlapping modulo table s… (Closed) Base URL: git@github.com:dart-lang/sdk.git@master

Patch Set: Created 4 years, 7 months ago

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Index: runtime/vm/stub_code_arm64.cc

diff --git a/runtime/vm/stub_code_arm64.cc b/runtime/vm/stub_code_arm64.cc

index cb31d8e167828f4d1eeacce1e5c7193c7cd654c1..15b7e0fc348c4a7ecea3d0beea552b204aa90a63 100644

--- a/runtime/vm/stub_code_arm64.cc

+++ b/runtime/vm/stub_code_arm64.cc

@@ -2106,7 +2106,8 @@ void StubCode::EmitMegamorphicLookup(Assembler* assembler) {

__ ldr(R1, FieldAddress(R5, MegamorphicCache::mask_offset()));

// R2: cache buckets array.

// R1: mask.

- __ mov(R3, R0);

+ __ LoadImmediate(TMP, MegamorphicCache::kSpreadFactor);

+ __ mul(R3, R0, TMP);

// R3: probe.

Label loop, update, load_target_function;

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