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Reorder conditions for the most common case

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This commit is contained in:
Dmitry Stogov 2022-11-02 16:27:26 +03:00
parent 364669a0a1
commit 802ec945ad
1 changed files with 5 additions and 24 deletions
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29
ir_ra.c
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@ -2391,30 +2391,11 @@ static int ir_linear_scan(ir_ctx *ctx)
for (j = 1; j <= ctx->vregs_count; j++) {
ival = ctx->live_intervals[j];
if (ival && ival->stack_spill_pos == -1 && !(ival->flags & IR_LIVE_INTERVAL_MEM_PARAM)) {
if (ival->next || ival->reg == IR_REG_NONE) {
#if 0
if (ctx->binding) {
ir_ref ref;
// TODO: avoid naive loop ???
for (ref = 1; ref < ctx->insns_count; ref++) {
if (ctx->vregs[ref] == j) {
ir_ref var = ir_binding_find(ctx, ref);
if (var < 0) {
ival->stack_spill_pos = -var;
ival->flags |= IR_LIVE_INTERVAL_SPILL_SPECIAL;
break;
}
}
}
if (ival->stack_spill_pos != -1) {
continue;
}
}
#endif
ival->stack_spill_pos = ir_allocate_spill_slot(ctx, ival->type, &data);
}
if (ival
&& (ival->next || ival->reg == IR_REG_NONE)
&& ival->stack_spill_pos == -1
&& !(ival->flags & IR_LIVE_INTERVAL_MEM_PARAM)) {
ival->stack_spill_pos = ir_allocate_spill_slot(ctx, ival->type, &data);
}
}