diff options
| -rw-r--r-- | include/tcg/tcg.h | 6 | ||||
| -rw-r--r-- | tcg/tcg.c | 14 |
2 files changed, 18 insertions, 2 deletions
diff --git a/include/tcg/tcg.h b/include/tcg/tcg.h index 451f3fec41..05a1912f8a 100644 --- a/include/tcg/tcg.h +++ b/include/tcg/tcg.h @@ -553,6 +553,12 @@ struct TCGContext { QTAILQ_HEAD(, TCGOp) ops, free_ops; QSIMPLEQ_HEAD(, TCGLabel) labels; + /* + * When clear, new ops are added to the tail of @ops. + * When set, new ops are added in front of @emit_before_op. + */ + TCGOp *emit_before_op; + /* Tells which temporary holds a given register. It does not take into account fixed registers */ TCGTemp *reg_to_temp[TCG_TARGET_NB_REGS]; @@ -1521,6 +1521,7 @@ void tcg_func_start(TCGContext *s) QTAILQ_INIT(&s->ops); QTAILQ_INIT(&s->free_ops); + s->emit_before_op = NULL; QSIMPLEQ_INIT(&s->labels); tcg_debug_assert(s->addr_type == TCG_TYPE_I32 || @@ -2332,7 +2333,11 @@ static void tcg_gen_callN(TCGHelperInfo *info, TCGTemp *ret, TCGTemp **args) op->args[pi++] = (uintptr_t)info; tcg_debug_assert(pi == total_args); - QTAILQ_INSERT_TAIL(&tcg_ctx->ops, op, link); + if (tcg_ctx->emit_before_op) { + QTAILQ_INSERT_BEFORE(tcg_ctx->emit_before_op, op, link); + } else { + QTAILQ_INSERT_TAIL(&tcg_ctx->ops, op, link); + } tcg_debug_assert(n_extend < ARRAY_SIZE(extend_free)); for (i = 0; i < n_extend; ++i) { @@ -3215,7 +3220,12 @@ static TCGOp *tcg_op_alloc(TCGOpcode opc, unsigned nargs) TCGOp *tcg_emit_op(TCGOpcode opc, unsigned nargs) { TCGOp *op = tcg_op_alloc(opc, nargs); - QTAILQ_INSERT_TAIL(&tcg_ctx->ops, op, link); + + if (tcg_ctx->emit_before_op) { + QTAILQ_INSERT_BEFORE(tcg_ctx->emit_before_op, op, link); + } else { + QTAILQ_INSERT_TAIL(&tcg_ctx->ops, op, link); + } return op; } |