compiler-optimization

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Why is gcc emitting worse code with __builtin_unreachable?
Admin1
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compiler-optimization unreachable-code assembly gcc c
R compiler options for optimization
user_88252610
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compiler-optimization r
What constitutes the parts of a basic block? (e.g. branches, targets, entry, exit)
user_53908450
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2
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105
mips compiler-optimization structure assembly c
Does the effect of std::launder last after the expression in which it is called?
user_61564700
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5
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102
stdlaunder compiler-optimization language-lawyer c++
No speedup when summing uint16 vs uint64 arrays with NumPy?
user_46675160
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6
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527
compiler-optimization simd numpy python performance
Why don't modern compilers coalesce neighboring memory accesses?
Admin1
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65
3
4109
compiler-optimization assembly optimization c++
Does compiler only unroll the outer loop completely?
user_86380090
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4
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157
loop-unrolling compiler-optimization x86-64 assembly gcc
Is there any practical difference between an inline function having internal and external linkage, with compiler optimization?
Admin1
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3
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104
compiler-optimization language-lawyer inline-functions c++
Is there any observable difference between printf(str) and fwrite(str, 1, strlen(str), stdout)?
user_12041430
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6
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111
compiler-optimization language-lawyer printf c
Bubble sort slower with -O3 than -O2 with GCC
user_171107860
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31143
compiler-optimization x86-64 cpu-architecture gcc c
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