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59
Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_u64 on Intel CPUs
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48
Comparing Fortran & C++ assembler for int = floor(sqrt(...))
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33
Why can't GCC generate an optimal operator== for a struct of two int32s?
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18
Why is there no "sub rsp" instruction in this function prologue and why are function parameters stored at negative rbp offsets?
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13
Can memcpy be used for type punning?
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12
x64 - Why still use 'call'?
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11
I do *not* want correct rounding for function exp
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11
Cast int to pointer - why cast to long first? (as in p = (void*) 42; )
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10
LFENCE is really useless vs. Spectre #2?
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9
c realloc(): invalid next size
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8
Why pushing double on the stack with two 32s bits pushes can be a lot slower than pushing it using float instructions (fldl & fstpl)?
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7
Implement XOR in terms of ADD, SUB, AND and branch on equal / not-equal?
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6
Different types of branches
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6
Bus error (core dumped) when using strcpy to a mmap'ed file
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6
Fast byte-wise replace if
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5
What are the benefits of using smaller registers, e.g. al vs eax / rax
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5
How to implement a C function that will not proceed with it's operations if it is called more than 100 times per second?
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5
In MIPS/SPIM, whats the difference between li and lw?
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5
C fixed size array treated as variable size
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5
Segmentation fault on properly allocated array
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5
Shuffle elements in AVX register
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5
SSE to Neon (_mm_movelh_ps)
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