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RandomX: optimized loading from scratchpad

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Prefetches scratchpad data as soon as possible to calculate data address for the next load.

Up to ~1.4% speedup on Ryzen 7 3700X @ 4.1 GHz, RAM 3200 MHz 14-14-14-28 with optimized sub-timings:
Variant|Before H/S|After H/S
-------|----------|---------
rx/0|8663|8777
rx/wow|9867|10009
rx/loki|8652|8731
This commit is contained in:
SChernykh 2019-09-11 19:10:01 +02:00
parent 01b2c952ea
commit 2322e3bcf7
9 changed files with 75 additions and 21 deletions
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2
src/crypto/randomx/jit_compiler_x86.hpp
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@ -72,7 +72,7 @@ namespace randomx {
int32_t codePos;
void generateProgramPrologue(Program&, ProgramConfiguration&);
void generateProgramEpilogue(Program&);
void generateProgramEpilogue(Program&, ProgramConfiguration&);
static void genAddressReg(Instruction&, uint8_t* code, int& codePos, bool rax = true);
static void genAddressRegDst(Instruction&, uint8_t* code, int& codePos);
static void genAddressImm(Instruction&, uint8_t* code, int& codePos);