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Optimise "CB 1:SHL" to "DUP:ADD"

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This saves one byte and by my count is about 11 cycles faster.
This commit is contained in:
Steven Flintham 2017-09-09 00:32:44 +01:00
parent 91b960f263
commit 8c390cbb07
1 changed files with 7 additions and 0 deletions
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7
src/toolsrc/codegen.c
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@ -1053,6 +1053,13 @@ int crunch_seq(t_opseq **seq, int pass)
freeops = 1;
break;
}
if (opnext->code == BINARY_CODE(SHL_TOKEN))
{
op->code = DUP_CODE;
opnext->code = BINARY_CODE(ADD_TOKEN);
crunched = 1;
break;
}
}
switch (opnext->code)
{