Shows a general comparison between argument a and 0, where we can set the data type of

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The C code int test (data_t a) { return a TEST 0; }

Shows a general comparison between argument a and 0, where we can set the data type of the argument by declaring data_t with a typedef, and the nature of the comparison by declaring TEST with a #define declaration. The following instruction sequences implement the comparison, where a is held in some portion of register %rdi. For each sequence, determine which data types data_t and which comparisons TEST could cause the compiler to generate this code.

A. B. C. D. testq %rdi, %rdi setge %al testw %di, %di sete %al testb seta testl setle %dil, %dil %al %edi,

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Computer Systems A Programmers Perspective

ISBN: 9781292101767

3rd Global Edition

Authors: Randal E. Bryant, David R. O'Hallaron

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