Optimized scalar promotion with load and splat SIMD instructions
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United States of America Patent
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Aug 28, 2012
Grant Date -
Dec 10, 2009
app pub date -
Jun 6, 2008
filing date -
Jun 6, 2008
priority date (Note) -
Expired
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Abstract
Mechanisms for optimizing scalar code executed on a single instruction multiple data (SIMD) engine are provided. Placement of vector operation-splat operations may be determined based on an identification of scalar and SIMD operations in an original code representation. The original code representation may be modified to insert the vector operation-splat operations based on the determined placement of vector operation-splat operations to generate a first modified code representation. Placement of separate splat operations may be determined based on identification of scalar and SIMD operations in the first modified code representation. The first modified code representation may be modified to insert or delete separate splat operations based on the determined placement of the separate splat operations to generate a second modified code representation. SIMD code may be output based on the second modified code representation for execution by the SIMD engine.
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