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'lineinfo' in prototypes saved as differences instead of absolute

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values, so that the array can use bytes instead of ints, reducing
its size. (A new array 'abslineinfo' is used when line differences
do not fit in a byte.)
This commit is contained in:
Roberto Ierusalimschy
2017-06-27 08:35:31 -03:00
parent 60a7492d24
commit b42430fd3a
11 changed files with 195 additions and 33 deletions
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5
lparser.h
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@@ -1,5 +1,5 @@
/*
** $Id: lparser.h,v 1.76 2015/12/30 18:16:13 roberto Exp roberto $
** $Id: lparser.h,v 1.77 2017/04/28 20:57:45 roberto Exp roberto $
** Lua Parser
** See Copyright Notice in lua.h
*/
@@ -123,14 +123,17 @@ typedef struct FuncState {
struct BlockCnt *bl; /* chain of current blocks */
int pc; /* next position to code (equivalent to 'ncode') */
int lasttarget; /* 'label' of last 'jump label' */
int previousline; /* last line that was saved in 'lineinfo' */
int jpc; /* list of pending jumps to 'pc' */
int nk; /* number of elements in 'k' */
int np; /* number of elements in 'p' */
int nabslineinfo; /* number of elements in 'abslineinfo' */
int firstlocal; /* index of first local var (in Dyndata array) */
short nlocvars; /* number of elements in 'f->locvars' */
lu_byte nactvar; /* number of active local variables */
lu_byte nups; /* number of upvalues */
lu_byte freereg; /* first free register */
lu_byte iwthabs; /* instructions issued since last absolute line info */
} FuncState;