International Business Machines Corporation

Ehsan Amiri

Raul Esteban Silvera

Christopher M Barton

Denis Palmeiro

Yaoqing Gao

Denis M Palmeiro

A computer identifies one or more pairs of scalar statements and performs a cost analysis of operations of each of the one or more pairs of scalar statements to determine both a benefit and a cost of operations. The computer determines, based, at least in part, on the cost analysis, a gain for each of the one or more pairs of scalar statements. The computer creates based, at least in part, on the gain, a sorted list of each of the one or more pairs of scalar statements and selects a first pair from the sorted list. The computer issues a query to a hash table using a statement of the first pair and selects from results received from the query, a second pair. The computer then extends, based, at least in part, on the second pair, the first pair to create a pack.

Extending superword level parallelism

Generating SIMD code from code statements that include non-isomorphic code statements. Code statements are received, each code statement has one or more operators in a respective operator order and each operator has a type and associated operands. At least two code statements among the code statements received have an operator of the same type in a different operator order position. A first operator order position is identified for the operators of the same type in each of the code statements. For each of the code statements, code is generated for operators and their associated operands having operator order positions preceding the first operator order positions. SIMD code is generated at least based on the identified first operator order positions, the corresponding operator type, and the operands associated with the operator type at the identified operator order positions.

Growing community of inventors

Seattle, WA, United States of America

Ehsan Amiri