Xmrig Dev Branch 1/4/2019#4
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Fix RandomX crash when compiled with fortify_source
RandomX: check pointer sizes during JIT initialization
No buffer overflow, better fix for `_FORTIFY_SOURCE`
RandomX: correct memcpy size for JIT initialization
RandomX v2: don't update dataset when switching to/from it
Fixed initial dataset prefetch for RandomX v2
Fix OpenCL address-space mismatch in keccak_f800_round
Don't reset nonce during donation rounds (possible fix for #3669)
Fixed clang arm64 builds
Fix arm64 builds (attempt number 2)
ARM64 JIT: Optimize Group E register conversion
Update FCMP++ block template layout
And a couple small improvements in the main loop.
RandomX: 2.5% faster dataset init on RISC-V
- optimized F/E register loading - aligned asm code - optimized emitAddImmediate for small negative values - v2: optimized CFROUND - v2: optimized AES in the main loop
ARM64 RandomX JIT optimizations
- ARM64: optimized emitMovImmediate/emitMemLoad - ARM64: disabled 32-bit literal preloading (it was slower) - Android and Linux: added MADV_COLLAPSE support to memory allocation
ARM64 RandomX optimizations
Two Apple-silicon-targeted tweaks to the aarch64 RandomX JIT: - Early dataset prefetch: when readReg2/readReg3 are finalized well before the end of the program body, emit the next iteration's dataset-line prefetch early to hide more DRAM latency on the serial scalar chain. - Non-temporal dataset loads: each 64-byte dataset line is read once and never reused, so ldp -> ldnp avoids evicting the hot scratchpad, and the prefetch hint moves pldl2strm -> pldl1strm to match the longer lead time. Measured ~8% hashrate gain on Apple M4 base over dev (7eadfdc).
ARM64 RandomX JIT: dataset prefetch + non-temporal loads (+~8% on M4 base)
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