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Tighten requirements for non-default optimization flags.

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FOLD is required for FWD/DSE optimizations.
This commit is contained in:
Mike Pall 2013-04-26 00:54:53 +02:00
parent 611ec41bca
commit 895a8bc91f
1 changed files with 7 additions and 5 deletions
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12
src/lj_opt_fold.c
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@ -2179,14 +2179,16 @@ TRef LJ_FASTCALL lj_opt_fold(jit_State *J)
if (!(J->flags & JIT_F_OPT_FOLD) && irm_kind(lj_ir_mode[fins->o]) == IRM_N)
return lj_opt_cse(J);
/* Forwarding or CSE disabled? Emit raw IR for loads, except for SLOAD. */
if ((J->flags & (JIT_F_OPT_FWD|JIT_F_OPT_CSE)) !=
(JIT_F_OPT_FWD|JIT_F_OPT_CSE) &&
/* No FOLD, forwarding or CSE? Emit raw IR for loads, except for SLOAD. */
if ((J->flags & (JIT_F_OPT_FOLD|JIT_F_OPT_FWD|JIT_F_OPT_CSE)) !=
(JIT_F_OPT_FOLD|JIT_F_OPT_FWD|JIT_F_OPT_CSE) &&
irm_kind(lj_ir_mode[fins->o]) == IRM_L && fins->o != IR_SLOAD)
return lj_ir_emit(J);
/* DSE disabled? Emit raw IR for stores. */
if (!(J->flags & JIT_F_OPT_DSE) && irm_kind(lj_ir_mode[fins->o]) == IRM_S)
/* No FOLD or DSE? Emit raw IR for stores. */
if ((J->flags & (JIT_F_OPT_FOLD|JIT_F_OPT_DSE)) !=
(JIT_F_OPT_FOLD|JIT_F_OPT_DSE) &&
irm_kind(lj_ir_mode[fins->o]) == IRM_S)
return lj_ir_emit(J);
}