Note that the repz cmpsb routine might not be faster than glibc’s memcmp. In my tests, in fact, it’s never faster, even when comparing just a few bytes.
More Related Contents:
- GCC’s reordering of read/write instructions
- Purpose of memory alignment
- Order of local variable allocation on the stack
- How does a “stack overflow” occur and how do you prevent it?
- Determining memory usage of objects?
- Cannot free memory once occupied by bytes.Buffer
- How to merge a scalar into a vector without the compiler wasting an instruction zeroing upper elements? Design limitation in Intel’s intrinsics?
- How to set Apache Spark Executor memory
- iOS6 MKMapView using a ton of memory, to the point of crashing the app, anyone else notice this?
- How to determine maximum stack usage?
- How much faster is the memory usually than the disk?
- inlining failed in call to always_inline ‘__m256d _mm256_broadcast_sd(const double*)’
- PHP Warning: POST Content-Length of 113 bytes exceeds the limit of -1988100096 bytes in Unknown
- The Effect of Architecture When Using SSE / AVX Intrinisics
- RDRAND and RDSEED intrinsics on various compilers?
- How to determine needed memory of Keras model?
- What is the best way to add a value to an array in state
- Go 1.3 Garbage collector not releasing server memory back to system
- What’s the relationship between “a” heap and “the” heap?
- How do cache lines work?
- How to assign more memory to Netbeans?
- How to change memory per node for apache spark worker
- Difference between word addressable and byte addressable
- Sort with the limited memory
- Produce loops without cmp instruction in GCC
- Undocumented GCC Extension: VLA in struct
- Pass large amount of binary data from u-boot to linux kernel
- Memory alignment on a 32-bit Intel processor
- `bash: ./a.out: No such file or directory` on running executable produced by `ld`
- Why does `int ;` compile fine in C, but not in C++?