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OPTIMIZE(7) DIRECTIVE

Applies to: C166 C Compiler

Answer


Information in this article applies to:


QUESTION

What does the OT(7) directive do in the C166 Compiler?

ANSWER

OT(7) enables optimizer level 7. This is a new optimization in C166 Version 4.

Optimizer Level 7 offers Common Tail Merging. The compiler analyzes the generated code function-by-function and locates common heads and tails. If the compiler detects common code sequences, it replaces one code sequence by a jump instruction to the other equivalent code sequence. This situation frequently occurs with switch/case statements. While analyzing the code, the compiler also replaces sequences with shorter instructions. Optimizer level 7 includes all optimizations of levels 0-6.

Article last edited on: 2000-09-07 00:00:00

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