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bug fix: if a case-statement did not have a default, so that the

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default is the successor of the block containing the CSA/CSB instruction,
the branch to the CSA/CSB block was not optimized
This commit is contained in:
ceriel 1989-03-07 10:11:24 +00:00
parent b708373ff8
commit 15449606d1
1 changed files with 6 additions and 1 deletions
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7
util/ego/bo/bo.c
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@ -25,6 +25,9 @@
#include "../../../h/em_mnem.h"
#include "../../../h/em_pseu.h"
#include "../../../h/em_spec.h"
#include "../../../h/em_flag.h"
extern char em_flag[];
#define LP_BLOCKS lp_extend->lpx_ra.lpx_blocks
@ -219,7 +222,9 @@ bo_switch(b)
(bra = last_code(b->b_start,TRUE)) != (line_p) 0 &&
INSTR(bra) == op_bra &&
(s->b_next == (bblock_p) 0 ||
!Lis_elem(s->b_next,s->b_succ))) {
!Lis_elem(s->b_next,s->b_succ) ||
((bra = last_code(s->b_start, TRUE)) != (line_p) 0 &&
(em_flag[INSTR(bra)]&EM_FLO) == FLO_T))) {
l = last_code(s->b_start,FALSE);
if (INSTR(l) == ps_end) {
if (PREV(l) == (line_p) 0) return;