src/ast.h - Issue 1233003: Speed up conversion of untagged int32 result if we know it must be a smi.

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Unified Diff: src/ast.h

Issue 1233003: Speed up conversion of untagged int32 result if we know it must be a smi. (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/

Patch Set: '' Created 10 years, 9 months ago

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Index: src/ast.h

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

--- src/ast.h (revision 4271)

+++ src/ast.h (working copy)

@@ -255,6 +255,10 @@

LoopConditionField::encode(flag);

}

+ // The value of the expression is guaranteed to be a smi, because the

+ // top operation is a bit operation with a mask, or a shift.

+ bool GuaranteedSmiResult();

// AST analysis results

// True if the expression rooted at this node can be compiled by the

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