micro-optimization

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x86_64 best way to reduce 64 bit register to 32 bit retaining zero or non-zero status
user_113221310
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38
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2837
x86-64 micro-optimization assembly
ARM Cortex M0+: How to use "Branch if Carry" instructions in C-code?
user_62159160
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4
2
448
compiler-optimization arm micro-optimization assembly c
Why is movl preferred to movb when translating a C downcast from unsigned int to unsigned char?
user_93735090
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14
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826
micro-optimization x86 assembly gcc c
Adding a byte from memory to the AX register
user_163468160
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2
1
494
zero-extension masm x86-16 micro-optimization assembly
Efficient modulo-255 computation
user_7807170
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21
5
1140
micro-optimization bit-manipulation assembly c algorithm
Why XOR before SETcc?
user_158530750
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4
1
272
micro-optimization x86 assembly c++
Code alignment dramatically affects performance
user_28157380
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8
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619
micro-optimization x86 assembly c++ performance
printing a signed integer optimization
user_19043860
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2
1
107
nasm x86-64 micro-optimization assembly
x86_64 check if power of 2 load / store will page cross for 2 pointers
user_113221310
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3
1
121
x86-64 micro-optimization assembly
Why does a loop transitioning from having its uops fed by the Uop Cache to LSD cause a spike in branch-misses?
user_113221310
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4
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272
micro-architecture branch-prediction x86-64 micro-optimization cpu-architecture
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