runtime/vm/intermediate_language.h - Issue 1058793003: A CheckClass instruction that compares against a null class only can be optimized to check instance…

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Unified Diff: runtime/vm/intermediate_language.h

Issue 1058793003: A CheckClass instruction that compares against a null class only can be optimized to check instance… (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/

Patch Set: Created 5 years, 9 months ago

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Index: runtime/vm/intermediate_language.h

===================================================================

--- runtime/vm/intermediate_language.h (revision 44874)

+++ runtime/vm/intermediate_language.h (working copy)

@@ -7592,8 +7592,13 @@

virtual void PrintOperandsTo(BufferFormatter* f) const;

- bool IsNullCheck() const;

+ bool IsNullCheck() const {

+ return DeoptIfNull() || DeoptIfNotNull();

+ }

+ bool DeoptIfNull() const;

+ bool DeoptIfNotNull() const;

bool IsDenseSwitch() const;

intptr_t ComputeCidMask() const;

static bool IsDenseMask(intptr_t mask);

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