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March 7, 2017 13:01
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clobber: force code generation for benchmarking
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| // gcc -O3 -S -masm=intel -fverbose-asm test.c | |
| // (code : out : in : clobber) | |
| asm volatile ("" :: "g"(&a) : "memory"); | |
| // see also: https://www.youtube.com/watch?v=nXaxk27zwlk |
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