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Commit 0d56c991 authored by yb9976's avatar yb9976
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Lower double word builtins.

parent dcab4eed
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ir/lower/lower_dw.c
View file @ 0d56c991
......@@ -31,9 +31,11 @@
#include <stdbool.h>
#include <assert.h>
#include "be.h"
#include "error.h"
#include "lowering.h"
#include "irnode_t.h"
#include "irnodeset.h"
#include "irgraph_t.h"
#include "irmode_t.h"
#include "iropt_t.h"
......@@ -46,6 +48,7 @@
#include "irgwalk.h"
#include "ircons.h"
#include "irflag.h"
#include "iroptimize.h"
#include "irtools.h"
#include "debug.h"
#include "set.h"
......@@ -65,9 +68,15 @@ static set *conv_types;
/** A map from a method type to its lowered type. */
static pmap *lowered_type;
/** A map from a builtin type to its lower and higher type. */
static pmap *lowered_builtin_type_high;
static pmap *lowered_builtin_type_low;
/** The types for the binop and unop intrinsics. */
static ir_type *binop_tp_u, *binop_tp_s, *unop_tp_u, *unop_tp_s, *tp_s, *tp_u;
static ir_nodeset_t created_mux_nodes;
/** the debug handle */
DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
......@@ -2315,6 +2324,337 @@ static void lower_ASM(ir_node *asmn, ir_mode *mode)
}
}
/**
* Lower the builtin type to its higher part.
*
* @param mtp the builtin type to lower
*
* @return the lowered type
*/
static ir_type *lower_Builtin_type_high(ir_type *mtp)
{
ir_type *res;
size_t i;
size_t n_params;
size_t n_res;
bool must_be_lowered;
res = (ir_type*)pmap_get(lowered_builtin_type_high, mtp);
if (res != NULL)
return res;
n_params = get_method_n_params(mtp);
n_res = get_method_n_ress(mtp);
must_be_lowered = false;
/* count new number of params */
for (i = n_params; i > 0;) {
ir_type *tp = get_method_param_type(mtp, --i);
if (is_Primitive_type(tp)) {
ir_mode *mode = get_type_mode(tp);
if (mode == env->high_signed || mode == env->high_unsigned) {
must_be_lowered = true;
break;
}
}
}
if (!must_be_lowered) {
set_type_link(mtp, NULL);
return mtp;
}
res = new_d_type_method(n_params, n_res, get_type_dbg_info(mtp));
/* set param types and result types */
for (i = 0; i < n_params; ++i) {
ir_type *tp = get_method_param_type(mtp, i);
if (is_Primitive_type(tp)) {
ir_mode *mode = get_type_mode(tp);
if (mode == env->high_signed) {
if (env->params->little_endian) {
set_method_param_type(res, i, tp_u);
} else {
set_method_param_type(res, i, tp_s);
}
} else if (mode == env->high_unsigned) {
set_method_param_type(res, i, tp_u);
} else {
set_method_param_type(res, i, tp);
}
} else {
set_method_param_type(res, i, tp);
}
}
for (i = n_res = 0; i < n_res; ++i) {
ir_type *tp = get_method_res_type(mtp, i);
set_method_res_type(res, i, tp);
}
set_method_variadicity(res, get_method_variadicity(mtp));
set_method_calling_convention(res, get_method_calling_convention(mtp));
set_method_additional_properties(res, get_method_additional_properties(mtp));
pmap_insert(lowered_builtin_type_high, mtp, res);
return res;
}
/**
* Lower the builtin type to its lower part.
*
* @param mtp the builtin type to lower
*
* @return the lowered type
*/
static ir_type *lower_Builtin_type_low(ir_type *mtp)
{
ir_type *res;
size_t i;
size_t n_params;
size_t n_ress;
bool must_be_lowered;
res = (ir_type*)pmap_get(lowered_builtin_type_low, mtp);
if (res != NULL)
return res;
n_params = get_method_n_params(mtp);
n_ress = get_method_n_ress(mtp);
must_be_lowered = false;
/* count new number of params */
for (i = n_params; i > 0;) {
ir_type *tp = get_method_param_type(mtp, --i);
if (is_Primitive_type(tp)) {
ir_mode *mode = get_type_mode(tp);
if (mode == env->high_signed || mode == env->high_unsigned) {
must_be_lowered = true;
break;
}
}
}
/* count new number of results */
for (i = n_ress; i > 0;) {
ir_type *tp = get_method_res_type(mtp, --i);
if (is_Primitive_type(tp)) {
ir_mode *mode = get_type_mode(tp);
if (mode == env->high_signed || mode == env->high_unsigned) {
must_be_lowered = true;
}
}
}
if (!must_be_lowered) {
set_type_link(mtp, NULL);
return mtp;
}
res = new_d_type_method(n_params, n_ress, get_type_dbg_info(mtp));
/* set param types and result types */
for (i = 0; i < n_params; ++i) {
ir_type *tp = get_method_param_type(mtp, i);
if (is_Primitive_type(tp)) {
ir_mode *mode = get_type_mode(tp);
if (mode == env->high_signed) {
if (env->params->little_endian) {
set_method_param_type(res, i, tp_s);
} else {
set_method_param_type(res, i, tp_u);
}
} else if (mode == env->high_unsigned) {
set_method_param_type(res, i, tp_u);
} else {
set_method_param_type(res, i, tp);
}
} else {
set_method_param_type(res, i, tp);
}
}
for (i = 0; i < n_ress; ++i) {
ir_type *tp = get_method_res_type(mtp, i);
set_method_res_type(res, i, tp);
}
set_method_variadicity(res, get_method_variadicity(mtp));
set_method_calling_convention(res, get_method_calling_convention(mtp));
set_method_additional_properties(res, get_method_additional_properties(mtp));
pmap_insert(lowered_builtin_type_low, mtp, res);
return res;
}
/**
* Lower double word builtins.
*/
static void lower_Builtin(ir_node *builtin, ir_mode *mode)
{
ir_builtin_kind kind = get_Builtin_kind(builtin);
ir_node *operand;
ir_mode *operand_mode;
switch (kind) {
case ir_bk_trap:
case ir_bk_debugbreak:
case ir_bk_return_address:
case ir_bk_frame_address:
case ir_bk_prefetch:
case ir_bk_bswap:
case ir_bk_inport:
case ir_bk_outport:
case ir_bk_inner_trampoline:
/* Nothing to do. */
return;
case ir_bk_ffs:
case ir_bk_clz:
case ir_bk_ctz:
case ir_bk_popcount:
case ir_bk_parity:
break;
default:
panic("unknown builtin");
}
operand = get_Builtin_param(builtin, 0);
operand_mode = get_irn_mode(operand);
if (operand_mode != env->high_signed && operand_mode != env->high_unsigned)
return;
arch_allow_ifconv_func allow_ifconv = be_get_backend_param()->allow_ifconv;
int arity = get_irn_arity(builtin);
dbg_info *dbgi = get_irn_dbg_info(builtin);
ir_graph *irg = get_irn_irg(builtin);
ir_type *type = get_Builtin_type(builtin);
ir_type *lowered_type_high = lower_Builtin_type_high(type);
ir_type *lowered_type_low = lower_Builtin_type_low(type);
ir_node *block = get_nodes_block(builtin);
ir_node *mem = get_Builtin_mem(builtin);
ir_node *res;
assert(is_NoMem(mem));
assert(arity == 2);
switch (kind) {
case ir_bk_ffs:
{
const lower64_entry_t *entry = get_node_entry(operand);
ir_node *in_high[1] = {entry->high_word};
ir_node *in_low[1] = {entry->low_word};
ir_node *number_of_bits = new_r_Const_long(irg, mode_Is, get_mode_size_bits(env->low_unsigned));
ir_node *zero_signed = new_rd_Const(dbgi, irg, get_mode_null(mode_Is));
ir_node *zero_unsigned = new_rd_Const(dbgi, irg, get_mode_null(mode_Iu));
ir_node *cmp_low = new_rd_Cmp(dbgi, block, entry->low_word, zero_unsigned, ir_relation_equal);
ir_node *cmp_high = new_rd_Cmp(dbgi, block, entry->high_word, zero_unsigned, ir_relation_equal);
ir_node *ffs_high = new_rd_Builtin(dbgi, block, mem, 1, in_high, kind, lowered_type_high);
ir_node *high_proj = new_r_Proj(ffs_high, mode_Is, pn_Builtin_1_result);
ir_node *high = new_rd_Add(dbgi, block, high_proj, number_of_bits, mode_Is);
ir_node *ffs_low = new_rd_Builtin(dbgi, block, mem, 1, in_low, kind, lowered_type_low);
ir_node *low = new_r_Proj(ffs_low, mode_Is, pn_Builtin_1_result);
ir_node *mux_high = new_rd_Mux(dbgi, block, cmp_high, high, zero_signed, mode_Is);
if (! allow_ifconv(cmp_high, high, zero_signed))
ir_nodeset_insert(&created_mux_nodes, mux_high);
res = new_rd_Mux(dbgi, block, cmp_low, low, mux_high, mode_Is);
if (! allow_ifconv(cmp_low, low, mux_high))
ir_nodeset_insert(&created_mux_nodes, res);
}
break;
case ir_bk_clz:
{
const lower64_entry_t *entry = get_node_entry(operand);
ir_node *in_high[1] = {entry->high_word};
ir_node *in_low[1] = {entry->low_word};
ir_node *number_of_bits = new_r_Const_long(irg, mode_Is, get_mode_size_bits(mode));
ir_node *zero_unsigned = new_rd_Const(dbgi, irg, get_mode_null(mode_Iu));
ir_node *cmp_high = new_rd_Cmp(dbgi, block, entry->high_word, zero_unsigned, ir_relation_equal);
ir_node *clz_high = new_rd_Builtin(dbgi, block, mem, 1, in_high, kind, lowered_type_high);
ir_node *high = new_r_Proj(clz_high, mode_Is, pn_Builtin_1_result);
ir_node *clz_low = new_rd_Builtin(dbgi, block, mem, 1, in_low, kind, lowered_type_low);
ir_node *low_proj = new_r_Proj(clz_low, mode_Is, pn_Builtin_1_result);
ir_node *low = new_rd_Add(dbgi, block, low_proj, number_of_bits, mode_Is);
res = new_rd_Mux(dbgi, block, cmp_high, high, low, mode_Is);
if (! allow_ifconv(cmp_high, high, low))
ir_nodeset_insert(&created_mux_nodes, res);
}
break;
case ir_bk_ctz:
{
const lower64_entry_t *entry = get_node_entry(operand);
ir_node *in_high[1] = {entry->high_word};
ir_node *in_low[1] = {entry->low_word};
ir_node *number_of_bits = new_r_Const_long(irg, mode_Is, get_mode_size_bits(env->low_unsigned));
ir_node *zero_unsigned = new_rd_Const(dbgi, irg, get_mode_null(mode_Iu));
ir_node *cmp_low = new_rd_Cmp(dbgi, block, entry->low_word, zero_unsigned, ir_relation_equal);
ir_node *ffs_high = new_rd_Builtin(dbgi, block, mem, 1, in_high, kind, lowered_type_high);
ir_node *high_proj = new_r_Proj(ffs_high, mode_Is, pn_Builtin_1_result);
ir_node *high = new_rd_Add(dbgi, block, high_proj, number_of_bits, mode_Is);
ir_node *ffs_low = new_rd_Builtin(dbgi, block, mem, 1, in_low, kind, lowered_type_low);
ir_node *low = new_r_Proj(ffs_low, mode_Is, pn_Builtin_1_result);
res = new_rd_Mux(dbgi, block, cmp_low, low, high, mode_Is);
if (! allow_ifconv(cmp_low, low, high))
ir_nodeset_insert(&created_mux_nodes, res);
}
break;
case ir_bk_popcount:
{
const lower64_entry_t *entry = get_node_entry(operand);
ir_node *in_high[1] = {entry->high_word};
ir_node *in_low[1] = {entry->low_word};
ir_node *popcount_high = new_rd_Builtin(dbgi, block, mem, 1, in_high, kind, lowered_type_high);
ir_node *popcount_low = new_rd_Builtin(dbgi, block, mem, 1, in_low, kind, lowered_type_low);
ir_node *high = new_r_Proj(popcount_high, mode_Is, pn_Builtin_1_result);
ir_node *low = new_r_Proj(popcount_low, mode_Is, pn_Builtin_1_result);
res = new_rd_Add(dbgi, block, high, low, mode_Is);
}
break;
case ir_bk_parity:
{
const lower64_entry_t *entry = get_node_entry(operand);
ir_node *in_high[1] = {entry->high_word};
ir_node *in_low[1] = {entry->low_word};
ir_node *parity_high;
ir_node *parity_low;
ir_node *high;
ir_node *low;
assert(arity == 2);
parity_high = new_rd_Builtin(dbgi, block, mem, 1, in_high, kind, lowered_type_high);
high = new_r_Proj(parity_high, mode_Is, pn_Builtin_1_result);
parity_low = new_rd_Builtin(dbgi, block, mem, 1, in_low, kind, lowered_type_low);
low = new_r_Proj(parity_low, mode_Is, pn_Builtin_1_result);
res = new_rd_Eor(dbgi, block, high, low, mode_Is);
}
break;
default:
panic("unexpected builtin");
}
turn_into_tuple(builtin, 2);
set_irn_n(builtin, pn_Builtin_M, mem);
set_irn_n(builtin, pn_Builtin_1_result, res);
}
/**
* check for opcodes that must always be lowered.
*/
......@@ -2322,6 +2662,7 @@ static bool always_lower(unsigned code)
{
switch (code) {
case iro_ASM:
case iro_Builtin:
case iro_Proj:
case iro_Start:
case iro_Call:
......@@ -2611,6 +2952,7 @@ void ir_prepare_dw_lowering(const lwrdw_param_t *new_param)
ir_register_dw_lower_function(op_Add, lower_binop);
ir_register_dw_lower_function(op_And, lower_And);
ir_register_dw_lower_function(op_Bad, lower_Bad);
ir_register_dw_lower_function(op_Builtin, lower_Builtin);
ir_register_dw_lower_function(op_Call, lower_Call);
ir_register_dw_lower_function(op_Cmp, lower_Cmp);
ir_register_dw_lower_function(op_Cond, lower_Cond);
......@@ -2635,6 +2977,14 @@ void ir_prepare_dw_lowering(const lwrdw_param_t *new_param)
ir_register_dw_lower_function(op_Unknown, lower_Unknown);
}
/**
* Callback to lower only the Mux nodes we created.
*/
static int lower_mux_cb(ir_node *mux)
{
return ir_nodeset_contains(&created_mux_nodes, mux);
}
/*
* Do the lowering.
*/
......@@ -2656,6 +3006,10 @@ void ir_lower_dw_ops(void)
conv_types = new_set(cmp_conv_tp, 16);
if (! lowered_type)
lowered_type = pmap_create();
if (! lowered_builtin_type_low)
lowered_builtin_type_low = pmap_create();
if (! lowered_builtin_type_high)
lowered_builtin_type_high = pmap_create();
/* create a primitive unsigned and signed type */
if (! tp_u)
......@@ -2723,7 +3077,15 @@ void ir_lower_dw_ops(void)
/* transform all graphs */
for (i = 0, n = get_irp_n_irgs(); i < n; ++i) {
ir_graph *irg = get_irp_irg(i);
ir_nodeset_init(&created_mux_nodes);
lower_irg(irg);
if (ir_nodeset_size(&created_mux_nodes) > 0)
lower_mux(irg, lower_mux_cb);
ir_nodeset_destroy(&created_mux_nodes);
}
irp_free_resources(irp, IRP_RESOURCE_TYPE_LINK);
del_pdeq(lenv.waitq);
......
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