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Block Unification IF-conversion for High Performance Architectures

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2 Author(s)
Rotem, N. ; Haifa University, Haifa ; Ben-Asher, Y.

Graphics Processing Units accelerate data-parallel graphic calculations using wide SIMD vector units. IF-conversion is a compiler transformation, which converts control dependencies into data dependencies, and it is used by vectorizing compilers to eliminate control flow and enable efficient code generation. In this work we enhance the IF-conversion transformation by using a block unification method to improve the currently used block flattening method. Our experimental results demonstrate that our IF-conversion method is effective in reducing the number of predicated instructions and in boosting kernel execution speed.

Published in:

Computer Architecture Letters  (Volume:PP ,  Issue: 99 )

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