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PPC: Generalize rematerialization handling.

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This commit is contained in:
Mike Pall 2011-10-24 16:21:11 +02:00
parent 826fb377ec
commit 167f638f91
1 changed files with 15 additions and 2 deletions
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17
src/lj_asm.c
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@ -460,7 +460,20 @@ static void ra_evictset(ASMState *as, RegSet drop)
/* Evict (rematerialize) all registers allocated to constants. */ /* Evict (rematerialize) all registers allocated to constants. */
static void ra_evictk(ASMState *as) static void ra_evictk(ASMState *as)
{ {
RegSet work = ~as->freeset & RSET_ALL; RegSet work;
#if !LJ_SOFTFP
work = ~as->freeset & RSET_FPR;
while (work) {
Reg r = rset_pickbot(work);
IRRef ref = regcost_ref(as->cost[r]);
if (emit_canremat(ref) && irref_isk(ref)) {
ra_rematk(as, ref);
checkmclim(as);
}
rset_clear(work, r);
}
#endif
work = ~as->freeset & RSET_GPR;
while (work) { while (work) {
Reg r = rset_pickbot(work); Reg r = rset_pickbot(work);
IRRef ref = regcost_ref(as->cost[r]); IRRef ref = regcost_ref(as->cost[r]);
@ -483,7 +496,7 @@ static Reg ra_allock(ASMState *as, int32_t k, RegSet allow)
IRRef ref; IRRef ref;
r = rset_pickbot(work); r = rset_pickbot(work);
ref = regcost_ref(as->cost[r]); ref = regcost_ref(as->cost[r]);
if (emit_canremat(ref) && if (ref < ASMREF_L &&
k == (ra_iskref(ref) ? ra_krefk(as, ref) : IR(ref)->i)) k == (ra_iskref(ref) ? ra_krefk(as, ref) : IR(ref)->i))
return r; return r;
rset_clear(work, r); rset_clear(work, r);