runtime/vm/flow_graph_compiler_x64.cc - Issue 1175803003: Inline instanceOf and 'as' operations; fix a bug in code emission

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Unified Diff: runtime/vm/flow_graph_compiler_x64.cc

Issue 1175803003: Inline instanceOf and 'as' operations; fix a bug in code emission (Closed) Base URL: https://github.com/dart-lang/sdk.git@master

Patch Set: c Created 5 years, 6 months ago

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Index: runtime/vm/flow_graph_compiler_x64.cc

diff --git a/runtime/vm/flow_graph_compiler_x64.cc b/runtime/vm/flow_graph_compiler_x64.cc

index b3bbe792445ed28c17511dc008c53b96b6c5fee1..8627315296a9e223ea58b9d97eb696c85962f711 100644

--- a/runtime/vm/flow_graph_compiler_x64.cc

+++ b/runtime/vm/flow_graph_compiler_x64.cc

@@ -604,7 +604,7 @@ void FlowGraphCompiler::GenerateInstanceOf(intptr_t token_pos,

// time, since an uninstantiated type at compile time could be Object or

// dynamic at run time.

__ CompareObject(RAX, Object::null_object(), PP);

- __ j(EQUAL, &is_not_instance);

+ __ j(EQUAL, type.IsNullType() ? &is_instance : &is_not_instance);

}

// Generate inline instanceof test.

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