Small optimizations #13
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added 11 commits
May 7, 2015 22:20
smaller opcode for xor reg,reg
try to use shorter opcodes
rdx->rbx following the assumption in the comments
restore delimiter in eax
fix typo, change dec reg to sub reg, 1
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I've tried to convert all the xor reg, reg to the shorter form, and switched mov reg1, reg2 with reg2=0 to xor reg1, reg1 which has the same size (2 bytes) but is faster on almost all modern CPU.
In 64bitPutFileOnDisk the comments say that r8 should be equal to rbx, but it was set to 0 in the code, not sure what is the right thing to do.