42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/* L I V E V A R I A B L E S A N A L Y S I S
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*
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* L V . H
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*/
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#define USE(b) (b)->b_extend->bx_lv.bx_use
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#define DEF(b) (b)->b_extend->bx_lv.bx_def
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#define L_IN(b) (b)->b_extend->bx_lv.bx_lin
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#define L_OUT(b) (b)->b_extend->bx_lv.bx_lout
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extern short nrglobals; /* number of global variables for which
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* ud-info is maintained.
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*/
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extern short nrvars; /* total number of variables (global + local)
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* for which ud-info is maintained.
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*/
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/* Every global variable for which ud-info is maintained has
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* a 'global variable number' (o_globnr). Every useful local
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* has a 'local variable number', which is its index in the
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* 'locals' table. All these variables also have a
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* 'variable number'. Conversions exist between these numbers.
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*/
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#define TO_GLOBAL(v) (v)
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#define TO_LOCAL(v) (v - nrglobals)
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#define GLOB_TO_VARNR(v) (v)
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#define LOC_TO_VARNR(v) (v + nrglobals)
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#define IS_GLOBAL(v) (v <= nrglobals)
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#define IS_LOCAL(v) (v > nrglobals)
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#define REGVAR(lc) lc->lc_flags |= LCF_REG
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#define IS_REGVAR(lc) (lc->lc_flags & LCF_REG)
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#define BADLC(lc) lc->lc_flags |= LCF_BAD
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#define IS_BADLC(lc) (lc->lc_flags & LCF_BAD)
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#define LIVE(lc) lc->lc_flags |= LCF_LIVE
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#define DEAD(lc) lc->lc_flags &= ~LCF_LIVE
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#define IS_LIVE(lc) (lc->lc_flags & LCF_LIVE)
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#define IS_DEAD(lc) (!(lc->lc_flags & LCF_LIVE))
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