github-wownero/RandomX
1
0
Fork 0
mirror of https://github.com/wownero/RandomX.git synced 2026-10-18 16:01:40 +02:00
Code Issues Packages Projects Releases Wiki Activity

Reduced x86 code size by 512 bytes (and ecx -> and eax)

Browse Source
This commit is contained in:
tevador
2019-01-12 20:27:35 +01:00
parent 1426fcbab5
commit 67e741ff22
8 changed files with 1841 additions and 1842 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/JitCompilerX86.cpp
+5 -6
View File
@@ -175,7 +175,7 @@ namespace RandomX {
emitByte(0xf0 + (instr.rega % RegistersCount));
emit(instr.addra);
emit(uint16_t(0x8b41)); //mov
emitByte(0xc8 + (instr.rega % RegistersCount)); //ecx, rega
emitByte(0xc0 + (instr.rega % RegistersCount)); //eax, rega
emit(0x753fc3f6); //test bl,0x3f; jne
emit(uint16_t(0xe805));
if (instr.loca & 3) { //A.LOC.W
@@ -186,9 +186,9 @@ namespace RandomX {
}
if ((instr.loca & 192) == 0) { //A.LOC.X
emit(uint16_t(0x3348));
emitByte(0xe9); //xor rbp, rcx
emitByte(0xe8); //xor rbp, rax
}
emit(uint16_t(0xe181)); //and ecx,
emitByte(0x25); //and eax,
if (instr.loca & 3) {
emit(ScratchpadL1 - 1); //first 16 KiB of scratchpad
}
@@ -199,14 +199,13 @@ namespace RandomX {
void JitCompilerX86::genar(Instruction& instr) {
gena(instr);
emit(0xce048b48); //mov rax,QWORD PTR [rsi+rcx*8]
emit(0xdc580f66);
emit(0xc6048b48); //mov rax,QWORD PTR [rsi+rax*8]
}
void JitCompilerX86::genaf(Instruction& instr) {
gena(instr);
emitByte(0xf3);
emit(0xce04e60f); //cvtdq2pd xmm0,QWORD PTR [rsi+rcx*8]
emit(0xc604e60f); //cvtdq2pd xmm0,QWORD PTR [rsi+rax*8]
}
void JitCompilerX86::genbiashift(Instruction& instr, uint16_t opcodeReg, uint16_t opcodeImm) {