+/*
+ * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
+ *
+ * This file is part of libFirm.
+ *
+ * This file may be distributed and/or modified under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation and appearing in the file LICENSE.GPL included in the
+ * packaging of this file.
+ *
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
+ *
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
+ */
+
/**
* @file
- * @brief This file implements the node emitter.
- * @author Christian Wuerdig, Matthias Braun
- * @version $Id$
+ * @brief This file implements the ia32 node emitter.
+ * @author Christian Wuerdig, Matthias Braun
+ * @version $Id$
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#include "../be_dbgout.h"
#include "../beemitter.h"
#include "../begnuas.h"
+#include "../beirg_t.h"
#include "ia32_emitter.h"
#include "gen_ia32_emitter.h"
assert(reg && "no in register found");
- /* in case of a joker register: just return a valid register */
- if (arch_register_type_is(reg, joker)) {
+ if(reg == &ia32_gp_regs[REG_GP_NOREG])
+ panic("trying to emit noreg for %+F input %d", irn, pos);
+
+ /* in case of unknown register: just return a valid register */
+ if (reg == &ia32_gp_regs[REG_GP_UKNWN]) {
const arch_register_req_t *req;
/* ask for the requirements */
return reg;
}
-/**
- * Returns an ident for the given tarval tv.
- */
-static
-ident *get_ident_for_tv(tarval *tv) {
- char buf[256];
- tarval_snprintf(buf, sizeof(buf), tv);
- return new_id_from_str(buf);
-}
-
/**
* Determine the gnu assembler suffix that indicates a mode
*/
case 64:
return 'l';
case 80:
+ case 96:
return 't';
}
} else {
panic("Can't output mode_suffix for %+F\n", mode);
}
-static
-int produces_result(const ir_node *node) {
- return !(is_ia32_St(node) ||
- is_ia32_Store8Bit(node) ||
- is_ia32_CondJmp(node) ||
- is_ia32_xCondJmp(node) ||
- is_ia32_CmpSet(node) ||
- is_ia32_xCmpSet(node) ||
- is_ia32_SwitchJmp(node));
-}
-
static
const char *ia32_get_reg_name_for_mode(ia32_emit_env_t *env, ir_mode *mode,
const arch_register_t *reg) {
#undef be_emit_cstring
#define be_emit_cstring(env,x) { be_emit_string_len(env->emit, x, sizeof(x)-1); }
#define be_emit_ident(env,i) be_emit_ident(env->emit,i)
+#define be_emit_tarval(env,tv) be_emit_tarval(env->emit,tv)
#define be_emit_write_line(env) be_emit_write_line(env->emit)
#define be_emit_finish_line_gas(env,n) be_emit_finish_line_gas(env->emit,n)
#define be_emit_pad_comment(env) be_emit_pad_comment(env->emit)
be_emit_string(env, reg_name);
}
+static void ia32_emit_register(ia32_emit_env_t *env, const arch_register_t *reg)
+{
+ const char *reg_name = arch_register_get_name(reg);
+
+ be_emit_char(env, '%');
+ be_emit_string(env, reg_name);
+}
+
void ia32_emit_x87_name(ia32_emit_env_t *env, const ir_node *node, int pos)
{
- ia32_attr_t *attr = get_ia32_attr(node);
+ const ia32_x87_attr_t *attr = get_ia32_x87_attr_const(node);
assert(pos < 3);
be_emit_char(env, '%');
be_emit_string(env, attr->x87[pos]->name);
}
-void ia32_emit_immediate(ia32_emit_env_t *env, const ir_node *node)
+static
+void ia32_emit_mode_suffix_mode(ia32_emit_env_t *env, const ir_mode *mode)
{
- tarval *tv;
- ir_entity *ent;
- ident *id;
-
- switch(get_ia32_immop_type(node)) {
- case ia32_ImmConst:
- tv = get_ia32_Immop_tarval(node);
- id = get_ident_for_tv(tv);
- break;
- case ia32_ImmSymConst:
- ent = get_ia32_Immop_symconst(node);
- mark_entity_visited(ent);
- id = get_entity_ld_ident(ent);
- break;
- default:
- assert(0);
- be_emit_string(env, "BAD");
- return;
- }
-
- be_emit_ident(env, id);
+ be_emit_char(env, get_mode_suffix(mode));
}
-void ia32_emit_mode_suffix(ia32_emit_env_t *env, const ir_mode *mode)
+void ia32_emit_mode_suffix(ia32_emit_env_t *env, const ir_node *node)
{
- be_emit_char(env, get_mode_suffix(mode));
+ ir_mode *mode = get_ia32_ls_mode(node);
+ if(mode == NULL)
+ mode = mode_Iu;
+
+ ia32_emit_mode_suffix_mode(env, mode);
}
void ia32_emit_x87_mode_suffix(ia32_emit_env_t *env, const ir_node *node)
{
ir_mode *mode = get_ia32_ls_mode(node);
if(mode != NULL)
- ia32_emit_mode_suffix(env, mode);
+ ia32_emit_mode_suffix_mode(env, mode);
}
static
}
+static
+void emit_ia32_Immediate(ia32_emit_env_t *env, const ir_node *node);
-/**
- * Emits registers and/or address mode of a binary operation.
- */
-void ia32_emit_binop(ia32_emit_env_t *env, const ir_node *node) {
- switch(get_ia32_op_type(node)) {
- case ia32_Normal:
- if (is_ia32_ImmConst(node) || is_ia32_ImmSymConst(node)) {
- be_emit_char(env, '$');
- ia32_emit_immediate(env, node);
- be_emit_cstring(env, ", ");
- ia32_emit_source_register(env, node, 2);
- } else {
- const arch_register_t *in1 = get_in_reg(env, node, 2);
- const arch_register_t *in2 = get_in_reg(env, node, 3);
- const arch_register_t *out = produces_result(node) ? get_out_reg(env, node, 0) : NULL;
- const arch_register_t *in;
- const char *in_name;
+void ia32_emit_8bit_source_register(ia32_emit_env_t *env, const ir_node *node,
+ int pos)
+{
+ const arch_register_t *reg;
+ const char *reg_name;
+ ir_node *in;
- in = out ? (REGS_ARE_EQUAL(out, in2) ? in1 : in2) : in2;
- out = out ? out : in1;
- in_name = arch_register_get_name(in);
+ in = get_irn_n(node, pos);
+ if(is_ia32_Immediate(in)) {
+ emit_ia32_Immediate(env, in);
+ return;
+ }
- if (is_ia32_emit_cl(node)) {
- assert(REGS_ARE_EQUAL(&ia32_gp_regs[REG_ECX], in) && "shift operation needs ecx");
- in_name = "cl";
- }
+ reg = get_in_reg(env, node, pos);
+ reg_name = arch_register_get_name(reg);
- be_emit_char(env, '%');
- be_emit_string(env, in_name);
- be_emit_cstring(env, ", %");
- be_emit_string(env, arch_register_get_name(out));
- }
- break;
- case ia32_AddrModeS:
- if (is_ia32_ImmConst(node) || is_ia32_ImmSymConst(node)) {
- assert(!produces_result(node) && "Source AM with Const must not produce result");
- ia32_emit_am(env, node);
- be_emit_cstring(env, ", $");
- ia32_emit_immediate(env, node);
- } else if (produces_result(node)) {
- ia32_emit_am(env, node);
- be_emit_cstring(env, ", ");
- ia32_emit_dest_register(env, node, 0);
- } else {
- ia32_emit_am(env, node);
- be_emit_cstring(env, ", ");
- ia32_emit_source_register(env, node, 2);
- }
- break;
- case ia32_AddrModeD:
- if (is_ia32_ImmConst(node) || is_ia32_ImmSymConst(node)) {
- be_emit_char(env, '$');
- ia32_emit_immediate(env, node);
- be_emit_cstring(env, ", ");
- ia32_emit_am(env, node);
- } else {
- const arch_register_t *in1 = get_in_reg(env, node,
- get_irn_arity(node) == 5 ? 3 : 2);
- ir_mode *mode = get_ia32_ls_mode(node);
- const char *in_name;
+ be_emit_char(env, '%');
+ be_emit_char(env, reg_name[1]);
+ be_emit_char(env, 'l');
+}
- in_name = ia32_get_reg_name_for_mode(env, mode, in1);
+void ia32_emit_16bit_source_register(ia32_emit_env_t *env, const ir_node *node,
+ int pos)
+{
+ const arch_register_t *reg;
+ const char *reg_name;
+ ir_node *in;
- if (is_ia32_emit_cl(node)) {
- assert(REGS_ARE_EQUAL(&ia32_gp_regs[REG_ECX], in1) && "shift operation needs ecx");
- in_name = "cl";
- }
+ in = get_irn_n(node, pos);
+ if(is_ia32_Immediate(in)) {
+ emit_ia32_Immediate(env, in);
+ return;
+ }
- be_emit_char(env, '%');
- be_emit_string(env, in_name);
- be_emit_cstring(env, ", ");
- ia32_emit_am(env, node);
- }
+ reg = get_in_reg(env, node, pos);
+ reg_name = arch_register_get_name(reg);
+
+ be_emit_char(env, '%');
+ be_emit_string(env, ®_name[1]);
+ be_emit_char(env, 'x');
+}
+
+void ia32_emit_8bit_dest_register(ia32_emit_env_t *env, const ir_node *node,
+ int pos)
+{
+ const arch_register_t *reg = get_out_reg(env, node, pos);
+ const char *reg_name = arch_register_get_name(reg);
+
+ be_emit_char(env, '%');
+ be_emit_char(env, reg_name[1]);
+ be_emit_char(env, 'l');
+}
+
+void ia32_emit_source_register_or_immediate(ia32_emit_env_t *env,
+ const ir_node *node, int pos)
+{
+ ir_node *in = get_irn_n(node, pos);
+ if(is_ia32_Immediate(in)) {
+ emit_ia32_Immediate(env, in);
+ } else {
+ ia32_emit_source_register(env, node, pos);
+ }
+}
+
+/**
+ * Emits registers and/or address mode of a binary operation.
+ */
+void ia32_emit_binop(ia32_emit_env_t *env, const ir_node *node, int produces_result) {
+ const ir_node *right_op = get_irn_n(node, n_ia32_binary_right);
+
+ switch(get_ia32_op_type(node)) {
+ case ia32_Normal:
+ if(is_ia32_Immediate(right_op)) {
+ emit_ia32_Immediate(env, right_op);
+ be_emit_cstring(env, ", ");
+ ia32_emit_source_register(env, node, n_ia32_binary_left);
break;
- default:
- assert(0 && "unsupported op type");
+ } else {
+ const arch_register_t *in1 = get_in_reg(env, node, n_ia32_binary_left);
+ const arch_register_t *in2 = get_in_reg(env, node, n_ia32_binary_right);
+ const arch_register_t *out = produces_result ? get_out_reg(env, node, 0) : NULL;
+ const arch_register_t *in;
+ const char *in_name;
+
+ in = out ? ((out == in2) ? in1 : in2) : in2;
+ out = out ? out : in1;
+ in_name = arch_register_get_name(in);
+
+ be_emit_char(env, '%');
+ be_emit_string(env, in_name);
+ be_emit_cstring(env, ", %");
+ be_emit_string(env, arch_register_get_name(out));
+ }
+ break;
+ case ia32_AddrModeS:
+ if(is_ia32_Immediate(right_op)) {
+ assert(!produces_result && "Source AM with Const must not produce result");
+
+ emit_ia32_Immediate(env, right_op);
+ be_emit_cstring(env, ", ");
+ ia32_emit_am(env, node);
+ } else if (produces_result) {
+ ia32_emit_am(env, node);
+ be_emit_cstring(env, ", ");
+ ia32_emit_dest_register(env, node, 0);
+ } else {
+ ia32_emit_am(env, node);
+ be_emit_cstring(env, ", ");
+ ia32_emit_source_register(env, node, n_ia32_binary_left);
+ }
+ break;
+ case ia32_AddrModeD:
+ panic("DestMode can't be output by %%binop anymore");
+ break;
+ default:
+ assert(0 && "unsupported op type");
}
}
void ia32_emit_x87_binop(ia32_emit_env_t *env, const ir_node *node) {
switch(get_ia32_op_type(node)) {
case ia32_Normal:
- if (is_ia32_ImmConst(node) || is_ia32_ImmSymConst(node)) {
- // should not happen...
- assert(0);
- } else {
- ia32_attr_t *attr = get_ia32_attr(node);
- const arch_register_t *in1 = attr->x87[0];
- const arch_register_t *in2 = attr->x87[1];
- const arch_register_t *out = attr->x87[2];
+ {
+ const ia32_x87_attr_t *x87_attr = get_ia32_x87_attr_const(node);
+ const arch_register_t *in1 = x87_attr->x87[0];
+ const arch_register_t *in2 = x87_attr->x87[1];
+ const arch_register_t *out = x87_attr->x87[2];
const arch_register_t *in;
- in = out ? (REGS_ARE_EQUAL(out, in2) ? in1 : in2) : in2;
+ in = out ? ((out == in2) ? in1 : in2) : in2;
out = out ? out : in1;
be_emit_char(env, '%');
}
break;
case ia32_AddrModeS:
- case ia32_AddrModeD:
ia32_emit_am(env, node);
break;
+ case ia32_AddrModeD:
default:
assert(0 && "unsupported op type");
}
}
+void ia32_emit_am_or_dest_register(ia32_emit_env_t *env, const ir_node *node,
+ int pos) {
+ if(get_ia32_op_type(node) == ia32_Normal) {
+ ia32_emit_dest_register(env, node, pos);
+ } else {
+ assert(get_ia32_op_type(node) == ia32_AddrModeD);
+ ia32_emit_am(env, node);
+ }
+}
+
/**
* Emits registers and/or address mode of a unary operation.
*/
-void ia32_emit_unop(ia32_emit_env_t *env, const ir_node *node) {
+void ia32_emit_unop(ia32_emit_env_t *env, const ir_node *node, int pos) {
+ const ir_node *op;
+
switch(get_ia32_op_type(node)) {
- case ia32_Normal:
- if (is_ia32_ImmConst(node) || is_ia32_ImmSymConst(node)) {
- be_emit_char(env, '$');
- ia32_emit_immediate(env, node);
- } else {
- if (is_ia32_Mul(node) || is_ia32_IMul1OP(node)) {
- ia32_emit_source_register(env, node, 3);
- } else if(is_ia32_IDiv(node) || is_ia32_Div(node)) {
- ia32_emit_source_register(env, node, 4);
- } else if(is_ia32_Push(node)) {
- ia32_emit_source_register(env, node, 2);
- } else if(is_ia32_Pop(node)) {
- ia32_emit_dest_register(env, node, 1);
- } else {
- ia32_emit_dest_register(env, node, 0);
- }
- }
- break;
- case ia32_AddrModeS:
- case ia32_AddrModeD:
- ia32_emit_am(env, node);
- break;
- default:
- assert(0 && "unsupported op type");
+ case ia32_Normal:
+ op = get_irn_n(node, pos);
+ if (is_ia32_Immediate(op)) {
+ emit_ia32_Immediate(env, op);
+ } else {
+ ia32_emit_source_register(env, node, pos);
+ }
+ break;
+ case ia32_AddrModeS:
+ case ia32_AddrModeD:
+ ia32_emit_am(env, node);
+ break;
+ default:
+ assert(0 && "unsupported op type");
}
}
* Emits address mode.
*/
void ia32_emit_am(ia32_emit_env_t *env, const ir_node *node) {
- ia32_am_flavour_t am_flav = get_ia32_am_flavour(node);
- ir_entity *ent = get_ia32_am_sc(node);
- int offs = get_ia32_am_offs_int(node);
+ ir_entity *ent = get_ia32_am_sc(node);
+ int offs = get_ia32_am_offs_int(node);
+ ir_node *base = get_irn_n(node, 0);
+ int has_base = !is_ia32_NoReg_GP(base);
+ ir_node *index = get_irn_n(node, 1);
+ int has_index = !is_ia32_NoReg_GP(index);
/* just to be sure... */
assert(!is_ia32_use_frame(node) || get_ia32_frame_ent(node) != NULL);
if (ent != NULL) {
ident *id;
- mark_entity_visited(ent);
+ set_entity_backend_marked(ent, 1);
id = get_entity_ld_ident(ent);
if (is_ia32_am_sc_sign(node))
be_emit_char(env, '-');
be_emit_ident(env, id);
+
+ if(get_entity_owner(ent) == get_tls_type()) {
+ if (get_entity_visibility(ent) == visibility_external_allocated) {
+ be_emit_cstring(env, "@INDNTPOFF");
+ } else {
+ be_emit_cstring(env, "@NTPOFF");
+ }
+ }
}
if(offs != 0) {
}
}
- if (am_flav & (ia32_B | ia32_I)) {
+ if (has_base || has_index) {
be_emit_char(env, '(');
/* emit base */
- if (am_flav & ia32_B) {
- ia32_emit_source_register(env, node, 0);
+ if (has_base) {
+ ia32_emit_source_register(env, node, n_ia32_base);
}
/* emit index + scale */
- if (am_flav & ia32_I) {
+ if (has_index) {
+ int scale;
be_emit_char(env, ',');
- ia32_emit_source_register(env, node, 1);
+ ia32_emit_source_register(env, node, n_ia32_index);
- if (am_flav & ia32_S) {
+ scale = get_ia32_am_scale(node);
+ if (scale > 0) {
be_emit_irprintf(env->emit, ",%d", 1 << get_ia32_am_scale(node));
}
}
be_emit_char(env, ')');
}
+
+ /* special case if nothing is set */
+ if(ent == NULL && offs == 0 && !has_base && !has_index) {
+ be_emit_char(env, '0');
+ }
}
/*************************************************
*/
struct cmp2conditon_t {
const char *name;
- pn_Cmp num;
+ int num;
};
/*
* positive conditions for signed compares
*/
-static
-const struct cmp2conditon_t cmp2condition_s[] = {
+static const struct cmp2conditon_t cmp2condition_s[] = {
{ NULL, pn_Cmp_False }, /* always false */
{ "e", pn_Cmp_Eq }, /* == */
{ "l", pn_Cmp_Lt }, /* < */
{ "g", pn_Cmp_Gt }, /* > */
{ "ge", pn_Cmp_Ge }, /* >= */
{ "ne", pn_Cmp_Lg }, /* != */
- { NULL, pn_Cmp_Leg}, /* Floating point: ordered */
- { NULL, pn_Cmp_Uo }, /* Floating point: unordered */
- { "e", pn_Cmp_Ue }, /* Floating point: unordered or == */
- { "b", pn_Cmp_Ul }, /* Floating point: unordered or < */
- { "be", pn_Cmp_Ule }, /* Floating point: unordered or <= */
- { "a", pn_Cmp_Ug }, /* Floating point: unordered or > */
- { "ae", pn_Cmp_Uge }, /* Floating point: unordered or >= */
- { "ne", pn_Cmp_Ne }, /* Floating point: unordered or != */
- { NULL, pn_Cmp_True }, /* always true */
+ { NULL, pn_Cmp_Leg}, /* always true */
};
/*
* positive conditions for unsigned compares
*/
-static
-const struct cmp2conditon_t cmp2condition_u[] = {
+static const struct cmp2conditon_t cmp2condition_u[] = {
{ NULL, pn_Cmp_False }, /* always false */
{ "e", pn_Cmp_Eq }, /* == */
{ "b", pn_Cmp_Lt }, /* < */
{ "a", pn_Cmp_Gt }, /* > */
{ "ae", pn_Cmp_Ge }, /* >= */
{ "ne", pn_Cmp_Lg }, /* != */
- { NULL, pn_Cmp_True }, /* always true */
+ { NULL, pn_Cmp_Leg }, /* always true */
};
-/*
- * returns the condition code
+enum {
+ ia32_pn_Cmp_unsigned = 0x1000,
+ ia32_pn_Cmp_float = 0x2000,
+};
+
+/**
+ * walks up a tree of copies/perms/spills/reloads to find the original value
+ * that is moved around
*/
-static
-const char *get_cmp_suffix(int cmp_code)
+static ir_node *find_original_value(ir_node *node)
+{
+ inc_irg_visited(current_ir_graph);
+ while(1) {
+ mark_irn_visited(node);
+ if(be_is_Copy(node)) {
+ node = be_get_Copy_op(node);
+ } else if(be_is_CopyKeep(node)) {
+ node = be_get_CopyKeep_op(node);
+ } else if(is_Proj(node)) {
+ ir_node *pred = get_Proj_pred(node);
+ if(be_is_Perm(pred)) {
+ node = get_irn_n(pred, get_Proj_proj(node));
+ } else if(be_is_MemPerm(pred)) {
+ node = get_irn_n(pred, get_Proj_proj(node) + 1);
+ } else if(is_ia32_Load(pred)) {
+ node = get_irn_n(pred, n_ia32_Load_mem);
+ } else {
+ return node;
+ }
+ } else if(is_Store(node)) {
+ node = get_irn_n(node, n_ia32_Store_val);
+ } else if(is_Phi(node)) {
+ int i, arity;
+ arity = get_irn_arity(node);
+ for(i = 0; i < arity; ++i) {
+ ir_node *in = get_irn_n(node, i);
+ if(irn_visited(in))
+ continue;
+ node = in;
+ break;
+ }
+ assert(i < arity);
+ } else {
+ return node;
+ }
+ }
+}
+
+static int determine_final_pnc(const ir_node *node, int flags_pos,
+ int pnc)
{
- assert( (cmp2condition_s[cmp_code & 15].num) == (cmp_code & 15));
- assert( (cmp2condition_u[cmp_code & 7].num) == (cmp_code & 7));
+ ir_node *flags = get_irn_n(node, flags_pos);
+ const ia32_attr_t *flags_attr;
+ flags = skip_Proj(flags);
+
+ if(is_ia32_Sahf(flags)) {
+ ir_node *cmp = get_irn_n(flags, n_ia32_Sahf_val);
+ if(!is_ia32_FucomFnstsw(cmp) || is_ia32_FucompFnstsw(cmp)
+ || is_ia32_FucomppFnstsw(cmp)) {
+ cmp = find_original_value(cmp);
+ assert(is_ia32_FucomFnstsw(cmp) || is_ia32_FucompFnstsw(cmp)
+ || is_ia32_FucomppFnstsw(cmp));
+ }
- if((cmp_code & ia32_pn_Cmp_Unsigned)) {
- return cmp2condition_u[cmp_code & 7].name;
+ flags_attr = get_ia32_attr_const(cmp);
+ if(flags_attr->data.cmp_flipped)
+ pnc = get_mirrored_pnc(pnc);
+ pnc |= ia32_pn_Cmp_float;
+ } else if(is_ia32_Ucomi(flags)) {
+ flags_attr = get_ia32_attr_const(flags);
+
+ if(flags_attr->data.cmp_flipped)
+ pnc = get_mirrored_pnc(pnc);
+ pnc |= ia32_pn_Cmp_float;
} else {
- return cmp2condition_s[cmp_code & 15].name;
+ assert(is_ia32_Cmp(flags) || is_ia32_Test(flags)
+ || is_ia32_Cmp8Bit(flags) || is_ia32_Test8Bit(flags));
+ flags_attr = get_ia32_attr_const(flags);
+
+ if(flags_attr->data.cmp_flipped)
+ pnc = get_mirrored_pnc(pnc);
+ if(flags_attr->data.cmp_unsigned)
+ pnc |= ia32_pn_Cmp_unsigned;
}
+
+ return pnc;
}
-void ia32_emit_cmp_suffix(ia32_emit_env_t *env, long pnc)
+static void ia32_emit_cmp_suffix(ia32_emit_env_t *env, int pnc)
{
- be_emit_string(env, get_cmp_suffix(pnc));
+ const char *str;
+
+ if((pnc & ia32_pn_Cmp_float) || (pnc & ia32_pn_Cmp_unsigned)) {
+ pnc = pnc & 7;
+ assert(cmp2condition_u[pnc].num == pnc);
+ str = cmp2condition_u[pnc].name;
+ } else {
+ pnc = pnc & 7;
+ assert(cmp2condition_s[pnc].num == pnc);
+ str = cmp2condition_s[pnc].name;
+ }
+
+ be_emit_string(env, str);
}
+void ia32_emit_cmp_suffix_node(ia32_emit_env_t *env, const ir_node *node,
+ int flags_pos)
+{
+ pn_Cmp pnc = get_ia32_pncode(node);
+
+ pnc = determine_final_pnc(node, flags_pos, pnc);
+ ia32_emit_cmp_suffix(env, pnc);
+}
/**
* Returns the target block for a control flow node.
}
/**
- * Returns the target label for a control flow node.
+ * Emits a block label for the given block.
*/
+static
+void ia32_emit_block_name(ia32_emit_env_t *env, const ir_node *block)
+{
+ if (has_Block_label(block)) {
+ be_emit_string(env, be_gas_label_prefix());
+ be_emit_irprintf(env->emit, "%u", (unsigned)get_Block_label(block));
+ } else {
+ be_emit_cstring(env, BLOCK_PREFIX);
+ be_emit_irprintf(env->emit, "%d", get_irn_node_nr(block));
+ }
+}
+
+/**
+ * Emits the target label for a control flow node.
+ */
+static
void ia32_emit_cfop_target(ia32_emit_env_t * env, const ir_node *node) {
ir_node *block = get_cfop_target_block(node);
- be_emit_cstring(env, BLOCK_PREFIX);
- be_emit_irprintf(env->emit, "%d", get_irn_node_nr(block));
+ ia32_emit_block_name(env, block);
}
/** Return the next block in Block schedule */
/**
* Returns the Proj with projection number proj and NOT mode_M
*/
-static
-ir_node *get_proj(const ir_node *node, long proj) {
+static ir_node *get_proj(const ir_node *node, long proj) {
const ir_edge_t *edge;
ir_node *src;
/**
* Emits the jump sequence for a conditional jump (cmp + jmp_true + jmp_false)
*/
-static
-void finish_CondJmp(ia32_emit_env_t *env, const ir_node *node, ir_mode *mode,
- long pnc) {
+static void emit_ia32_Jcc(ia32_emit_env_t *env, const ir_node *node)
+{
const ir_node *proj_true;
const ir_node *proj_false;
const ir_node *block;
const ir_node *next_block;
- int flipped = 0;
+ pn_Cmp pnc = get_ia32_pncode(node);
- /* get both Proj's */
- proj_true = get_proj(node, pn_Cond_true);
- assert(proj_true && "CondJmp without true Proj");
+ pnc = determine_final_pnc(node, 0, pnc);
- proj_false = get_proj(node, pn_Cond_false);
- assert(proj_false && "CondJmp without false Proj");
+ /* get both Projs */
+ proj_true = get_proj(node, pn_ia32_Jcc_true);
+ assert(proj_true && "Jcc without true Proj");
- /* for now, the code works for scheduled and non-schedules blocks */
- block = get_nodes_block(node);
+ proj_false = get_proj(node, pn_ia32_Jcc_false);
+ assert(proj_false && "Jcc without false Proj");
- /* we have a block schedule */
+ block = get_nodes_block(node);
next_block = next_blk_sched(block);
if (get_cfop_target_block(proj_true) == next_block) {
proj_true = proj_false;
proj_false = t;
- flipped = 1;
- pnc = get_negated_pnc(pnc, mode);
+ if(pnc & ia32_pn_Cmp_float) {
+ pnc = get_negated_pnc(pnc, mode_F);
+ } else {
+ pnc = get_negated_pnc(pnc, mode_Iu);
+ }
}
- /* in case of unordered compare, check for parity */
- if (pnc & pn_Cmp_Uo) {
- be_emit_cstring(env, "\tjp ");
+ if (pnc & ia32_pn_Cmp_float) {
+ /* Some floating point comparisons require a test of the parity flag,
+ * which indicates that the result is unordered */
+ switch (pnc & 15) {
+ case pn_Cmp_Uo:
+ be_emit_cstring(env, "\tjp ");
+ ia32_emit_cfop_target(env, proj_true);
+ be_emit_finish_line_gas(env, proj_true);
+ break;
+
+ case pn_Cmp_Leg:
+ be_emit_cstring(env, "\tjnp ");
+ ia32_emit_cfop_target(env, proj_true);
+ be_emit_finish_line_gas(env, proj_true);
+ break;
+
+ case pn_Cmp_Eq:
+ case pn_Cmp_Lt:
+ case pn_Cmp_Le:
+ be_emit_cstring(env, "\tjp ");
+ ia32_emit_cfop_target(env, proj_false);
+ be_emit_finish_line_gas(env, proj_false);
+ goto emit_jcc;
+
+ case pn_Cmp_Ug:
+ case pn_Cmp_Uge:
+ case pn_Cmp_Ne:
+ be_emit_cstring(env, "\tjp ");
+ ia32_emit_cfop_target(env, proj_true);
+ be_emit_finish_line_gas(env, proj_true);
+ goto emit_jcc;
+
+ default:
+ goto emit_jcc;
+ }
+ } else {
+emit_jcc:
+ be_emit_cstring(env, "\tj");
+ ia32_emit_cmp_suffix(env, pnc);
+ be_emit_char(env, ' ');
ia32_emit_cfop_target(env, proj_true);
be_emit_finish_line_gas(env, proj_true);
}
- be_emit_cstring(env, "\tj");
- ia32_emit_cmp_suffix(env, pnc);
- be_emit_char(env, ' ');
- ia32_emit_cfop_target(env, proj_true);
- be_emit_finish_line_gas(env, proj_true);
-
/* the second Proj might be a fallthrough */
if (get_cfop_target_block(proj_false) != next_block) {
be_emit_cstring(env, "\tjmp ");
ia32_emit_cfop_target(env, proj_false);
be_emit_finish_line_gas(env, proj_false);
} else {
- be_emit_cstring(env, "\t/* fallthrough to");
+ be_emit_cstring(env, "\t/* fallthrough to ");
ia32_emit_cfop_target(env, proj_false);
be_emit_cstring(env, " */");
be_emit_finish_line_gas(env, proj_false);
}
}
-/**
- * Emits code for conditional jump.
- */
-static
-void CondJmp_emitter(ia32_emit_env_t *env, const ir_node *node) {
- be_emit_cstring(env, "\tcmp ");
- ia32_emit_binop(env, node);
- be_emit_finish_line_gas(env, node);
-
- finish_CondJmp(env, node, mode_Iu, get_ia32_pncode(node));
-}
-
-/**
- * Emits code for conditional jump with two variables.
- */
-static
-void emit_ia32_CondJmp(ia32_emit_env_t *env, const ir_node *node) {
- CondJmp_emitter(env, node);
-}
-
-/**
- * Emits code for conditional test and jump.
- */
-static
-void TestJmp_emitter(ia32_emit_env_t *env, const ir_node *node) {
- if(is_ia32_ImmSymConst(node) || is_ia32_ImmConst(node)) {
- be_emit_cstring(env, "\ttest $");
- ia32_emit_immediate(env, node);
- be_emit_cstring(env, ", ");
- ia32_emit_source_register(env, node, 0);
- be_emit_finish_line_gas(env, node);
- } else {
- be_emit_cstring(env, "\ttest ");
- ia32_emit_source_register(env, node, 1);
- be_emit_cstring(env, ", ");
- ia32_emit_source_register(env, node, 0);
- be_emit_finish_line_gas(env, node);
- }
- finish_CondJmp(env, node, mode_Iu, get_ia32_pncode(node));
-}
-
-/**
- * Emits code for conditional test and jump with two variables.
- */
-static
-void emit_ia32_TestJmp(ia32_emit_env_t *env, const ir_node *node) {
- TestJmp_emitter(env, node);
-}
-
-static
-void emit_ia32_CJmp(ia32_emit_env_t *env, const ir_node *node) {
- be_emit_cstring(env, "/* omitted redundant test */");
- be_emit_finish_line_gas(env, node);
-
- finish_CondJmp(env, node, mode_Is, get_ia32_pncode(node));
-}
-
-static
-void emit_ia32_CJmpAM(ia32_emit_env_t *env, const ir_node *node) {
- be_emit_cstring(env, "/* omitted redundant test/cmp */");
- be_emit_finish_line_gas(env, node);
-
- finish_CondJmp(env, node, mode_Is, get_ia32_pncode(node));
-}
-
+#if 0
/**
* Emits code for conditional SSE floating point jump with two variables.
*/
static
-void emit_ia32_xCondJmp(ia32_emit_env_t *env, const ir_node *node) {
+void emit_ia32_xCmpJmp(ia32_emit_env_t *env, const ir_node *node) {
be_emit_cstring(env, "\tucomi");
ia32_emit_xmm_mode_suffix(env, node);
be_emit_char(env, ' ');
- ia32_emit_binop(env, node);
+ ia32_emit_binop(env, node, 0);
be_emit_finish_line_gas(env, node);
finish_CondJmp(env, node, mode_F, get_ia32_pncode(node));
* Emits code for conditional x87 floating point jump with two variables.
*/
static
-void emit_ia32_x87CondJmp(ia32_emit_env_t *env, const ir_node *node) {
- ia32_attr_t *attr = get_ia32_attr(node);
- const char *reg = attr->x87[1]->name;
- long pnc = get_ia32_pncode(node);
+void emit_ia32_x87CmpJmp(ia32_emit_env_t *env, const ir_node *node) {
+ const ia32_x87_attr_t *x87_attr = get_ia32_x87_attr_const(node);
+ const char *reg = x87_attr->x87[1]->name;
+ long pnc = get_ia32_pncode(node);
switch (get_ia32_irn_opcode(node)) {
case iro_ia32_fcomrJmp:
pnc = get_inversed_pnc(pnc);
- reg = attr->x87[0]->name;
+ reg = x87_attr->x87[0]->name;
case iro_ia32_fcomJmp:
default:
be_emit_cstring(env, "\tfucom ");
break;
case iro_ia32_fcomrpJmp:
pnc = get_inversed_pnc(pnc);
- reg = attr->x87[0]->name;
+ reg = x87_attr->x87[0]->name;
case iro_ia32_fcompJmp:
be_emit_cstring(env, "\tfucomp ");
break;
finish_CondJmp(env, node, mode_E, pnc);
}
+#endif
-static
-void CMov_emitter(ia32_emit_env_t *env, const ir_node *node) {
- long pnc = get_ia32_pncode(node);
- int is_PsiCondCMov = is_ia32_PsiCondCMov(node);
- int idx_left = 2 - is_PsiCondCMov;
- int idx_right = 3 - is_PsiCondCMov;
- const arch_register_t *in1, *in2, *out;
-
- out = arch_get_irn_register(env->arch_env, node);
- in1 = arch_get_irn_register(env->arch_env, get_irn_n(node, idx_left));
- in2 = arch_get_irn_register(env->arch_env, get_irn_n(node, idx_right));
-
- /* we have to emit the cmp first, because the destination register */
- /* could be one of the compare registers */
- if (is_ia32_CmpCMov(node)) {
- be_emit_cstring(env, "\tcmp ");
- ia32_emit_source_register(env, node, 1);
- be_emit_cstring(env, ", ");
- ia32_emit_source_register(env, node, 0);
- } else if (is_ia32_xCmpCMov(node)) {
- be_emit_cstring(env, "\tucomis");
- ia32_emit_mode_suffix(env, get_irn_mode(node));
- be_emit_char(env, ' ');
- ia32_emit_source_register(env, node, 1);
- be_emit_cstring(env, ", ");
- ia32_emit_source_register(env, node, 0);
- } else if (is_PsiCondCMov) {
- /* omit compare because flags are already set by And/Or */
- be_emit_cstring(env, "\ttest ");
- ia32_emit_source_register(env, node, 0);
- be_emit_cstring(env, ", ");
- ia32_emit_source_register(env, node, 0);
- } else {
- assert(0 && "unsupported CMov");
- }
- be_emit_finish_line_gas(env, node);
-
- if (REGS_ARE_EQUAL(out, in2)) {
- /* best case: default in == out -> do nothing */
- } else if (REGS_ARE_EQUAL(out, in1)) {
- ir_node *n = (ir_node*) node;
- /* true in == out -> need complement compare and exchange true and default in */
- ir_node *t = get_irn_n(n, idx_left);
- set_irn_n(n, idx_left, get_irn_n(n, idx_right));
- set_irn_n(n, idx_right, t);
-
- pnc = get_negated_pnc(pnc, get_irn_mode(node));
- } else {
- /* out is different from in: need copy default -> out */
- if (is_PsiCondCMov) {
- be_emit_cstring(env, "\tmovl ");
- ia32_emit_dest_register(env, node, 2);
- be_emit_cstring(env, ", ");
- ia32_emit_dest_register(env, node, 0);
- } else {
- be_emit_cstring(env, "\tmovl ");
- ia32_emit_source_register(env, node, 3);
- be_emit_cstring(env, ", ");
- ia32_emit_dest_register(env, node, 0);
- }
- be_emit_finish_line_gas(env, node);
- }
-
- if (is_PsiCondCMov) {
- be_emit_cstring(env, "\tcmov");
- ia32_emit_cmp_suffix(env, pnc);
- be_emit_cstring(env, "l ");
- ia32_emit_source_register(env, node, 1);
- be_emit_cstring(env, ", ");
- ia32_emit_dest_register(env, node, 0);
+static void emit_ia32_CMov(ia32_emit_env_t *env, const ir_node *node)
+{
+ const arch_register_t *out = arch_get_irn_register(env->arch_env, node);
+ const arch_register_t *in_true;
+ const arch_register_t *in_false;
+ pn_Cmp pnc = get_ia32_pncode(node);
+
+ pnc = determine_final_pnc(node, n_ia32_CMov_eflags, pnc);
+
+ in_true = arch_get_irn_register(env->arch_env,
+ get_irn_n(node, n_ia32_CMov_val_true));
+ in_false = arch_get_irn_register(env->arch_env,
+ get_irn_n(node, n_ia32_CMov_val_false));
+
+ /* should be same constraint fullfilled? */
+ if(out == in_false) {
+ /* yes -> nothing to do */
+ } else if(out == in_true) {
+ const arch_register_t *tmp;
+
+ /* swap left/right and negate pnc */
+ pnc = get_negated_pnc(pnc, mode_Iu);
+
+ tmp = in_true;
+ in_true = in_false;
+ in_false = tmp;
} else {
- be_emit_cstring(env, "\tcmov");
- ia32_emit_cmp_suffix(env, pnc);
- be_emit_cstring(env, "l ");
- ia32_emit_source_register(env, node, 2);
+ /* we need a mov */
+ be_emit_cstring(env, "\tmovl ");
+ ia32_emit_register(env, in_false);
be_emit_cstring(env, ", ");
- ia32_emit_dest_register(env, node, 0);
+ ia32_emit_register(env, out);
+ be_emit_finish_line_gas(env, node);
}
- be_emit_finish_line_gas(env, node);
-}
-
-static
-void emit_ia32_CmpCMov(ia32_emit_env_t *env, const ir_node *node) {
- CMov_emitter(env, node);
-}
-static
-void emit_ia32_PsiCondCMov(ia32_emit_env_t *env, const ir_node *node) {
- CMov_emitter(env, node);
-}
-
-static
-void emit_ia32_xCmpCMov(ia32_emit_env_t *env, const ir_node *node) {
- CMov_emitter(env, node);
-}
-
-static
-void Set_emitter(ia32_emit_env_t *env, const ir_node *node, ir_mode *mode) {
- int pnc = get_ia32_pncode(node);
- const char *reg8bit;
- const arch_register_t *out;
-
- out = arch_get_irn_register(env->arch_env, node);
- reg8bit = ia32_get_mapped_reg_name(env->isa->regs_8bit, out);
-
- if (is_ia32_CmpSet(node)) {
- be_emit_cstring(env, "\tcmp ");
- ia32_emit_binop(env, node);
- } else if (is_ia32_xCmpSet(node)) {
- be_emit_cstring(env, "\tucomis");
- ia32_emit_mode_suffix(env, get_irn_mode(get_irn_n(node, 2)));
- be_emit_char(env, ' ');
- ia32_emit_binop(env, node);
- } else if (is_ia32_PsiCondSet(node)) {
- be_emit_cstring(env, "\tcmp $0, ");
- ia32_emit_source_register(env, node, 0);
+ be_emit_cstring(env, "\tcmov");
+ ia32_emit_cmp_suffix(env, pnc);
+ be_emit_char(env, ' ');
+ if(get_ia32_op_type(node) == ia32_AddrModeS) {
+ ia32_emit_am(env, node);
} else {
- assert(0 && "unsupported Set");
+ ia32_emit_register(env, in_true);
}
+ be_emit_cstring(env, ", ");
+ ia32_emit_register(env, out);
be_emit_finish_line_gas(env, node);
-
- /* use mov to clear target because it doesn't affect the eflags */
- be_emit_cstring(env, "\tmovl $0, %");
- be_emit_string(env, arch_register_get_name(out));
- be_emit_finish_line_gas(env, node);
-
- be_emit_cstring(env, "\tset");
- ia32_emit_cmp_suffix(env, pnc);
- be_emit_cstring(env, " %");
- be_emit_string(env, reg8bit);
- be_emit_finish_line_gas(env, node);
-}
-
-static
-void emit_ia32_CmpSet(ia32_emit_env_t *env, const ir_node *node) {
- Set_emitter(env, node, get_irn_mode(get_irn_n(node, 2)));
-}
-
-static
-void emit_ia32_PsiCondSet(ia32_emit_env_t *env, const ir_node *node) {
- Set_emitter(env, node, get_irn_mode(get_irn_n(node, 0)));
-}
-
-static
-void emit_ia32_xCmpSet(ia32_emit_env_t *env, const ir_node *node) {
- Set_emitter(env, node, get_irn_mode(get_irn_n(node, 2)));
}
+#if 0
static
void emit_ia32_xCmp(ia32_emit_env_t *env, const ir_node *node) {
int sse_pnc = -1;
be_emit_finish_line_gas(env, node);
be_emit_cstring(env, "\tcmpsd $3, ");
- ia32_emit_binop(env, node);
+ ia32_emit_binop(env, node, 0);
be_emit_finish_line_gas(env, node);
be_emit_cstring(env, "\tmovsd ");
be_emit_cstring(env, "\tcmpsd ");
be_emit_irprintf(env->emit, "%d, ", sse_pnc);
- ia32_emit_binop(env, node);
+ ia32_emit_binop(env, node, 0);
be_emit_finish_line_gas(env, node);
if (unord && sse_pnc != 3) {
be_emit_finish_line_gas(env, node);
}
}
+#endif
/*********************************************************
* _ _ _
/* jump table for switch generation */
typedef struct _jmp_tbl_t {
ir_node *defProj; /**< default target */
- int min_value; /**< smallest switch case */
- int max_value; /**< largest switch case */
- int num_branches; /**< number of jumps */
+ long min_value; /**< smallest switch case */
+ long max_value; /**< largest switch case */
+ long num_branches; /**< number of jumps */
char *label; /**< label of the jump table */
branch_t *branches; /**< jump array */
} jmp_tbl_t;
be_emit_finish_line_gas(env, node);
}
+static
+void emit_ia32_Immediate(ia32_emit_env_t *env, const ir_node *node)
+{
+ const ia32_immediate_attr_t *attr = get_ia32_immediate_attr_const(node);
+
+ be_emit_char(env, '$');
+ if(attr->symconst != NULL) {
+ ident *id = get_entity_ld_ident(attr->symconst);
+
+ if(attr->attr.data.am_sc_sign)
+ be_emit_char(env, '-');
+ be_emit_ident(env, id);
+ }
+ if(attr->symconst == NULL || attr->offset != 0) {
+ if(attr->symconst != NULL) {
+ be_emit_irprintf(env->emit, "%+d", attr->offset);
+ } else {
+ be_emit_irprintf(env->emit, "0x%X", attr->offset);
+ }
+ }
+}
+
+static
+const char* emit_asm_operand(ia32_emit_env_t *env, const ir_node *node,
+ const char *s)
+{
+ const arch_register_t *reg;
+ const char *reg_name;
+ char c;
+ char modifier = 0;
+ int num = -1;
+ const ia32_attr_t *attr;
+ int n_outs;
+ int p;
+
+ assert(*s == '%');
+ c = *(++s);
+
+ /* parse modifiers */
+ switch(c) {
+ case 0:
+ ir_fprintf(stderr, "Warning: asm text (%+F) ends with %\n", node);
+ be_emit_char(env, '%');
+ return s + 1;
+ case '%':
+ be_emit_char(env, '%');
+ return s + 1;
+ case 'w':
+ case 'b':
+ case 'h':
+ modifier = c;
+ ++s;
+ break;
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ break;
+ default:
+ ir_fprintf(stderr, "Warning: asm text (%+F) contains unknown modifier "
+ "'%c' for asm op\n", node, c);
+ ++s;
+ break;
+ }
+
+ /* parse number */
+ sscanf(s, "%d%n", &num, &p);
+ if(num < 0) {
+ ir_fprintf(stderr, "Warning: Couldn't parse assembler operand (%+F)\n",
+ node);
+ return s;
+ } else {
+ s += p;
+ }
+
+ /* get register */
+ attr = get_ia32_attr_const(node);
+ n_outs = ARR_LEN(attr->slots);
+ if(num < n_outs) {
+ reg = get_out_reg(env, node, num);
+ } else {
+ ir_node *pred;
+ int in = num - n_outs;
+ if(in >= get_irn_arity(node)) {
+ ir_fprintf(stderr, "Warning: Invalid input %d specified in asm "
+ "op (%+F)\n", num, node);
+ return s;
+ }
+ pred = get_irn_n(node, in);
+ /* might be an immediate value */
+ if(is_ia32_Immediate(pred)) {
+ emit_ia32_Immediate(env, pred);
+ return s;
+ }
+ reg = get_in_reg(env, node, in);
+ }
+ if(reg == NULL) {
+ ir_fprintf(stderr, "Warning: no register assigned for %d asm op "
+ "(%+F)\n", num, node);
+ return s;
+ }
+
+ /* emit it */
+ be_emit_char(env, '%');
+ switch(modifier) {
+ case 0:
+ reg_name = arch_register_get_name(reg);
+ break;
+ case 'b':
+ reg_name = ia32_get_mapped_reg_name(env->isa->regs_8bit, reg);
+ break;
+ case 'h':
+ reg_name = ia32_get_mapped_reg_name(env->isa->regs_8bit_high, reg);
+ break;
+ case 'w':
+ reg_name = ia32_get_mapped_reg_name(env->isa->regs_16bit, reg);
+ break;
+ default:
+ panic("Invalid asm op modifier");
+ }
+ be_emit_string(env, reg_name);
+
+ return s;
+}
+
+/**
+ * Emits code for an ASM pseudo op.
+ */
+static
+void emit_ia32_Asm(ia32_emit_env_t *env, const ir_node *node)
+{
+ const void *gen_attr = get_irn_generic_attr_const(node);
+ const ia32_asm_attr_t *attr
+ = CONST_CAST_IA32_ATTR(ia32_asm_attr_t, gen_attr);
+ ident *asm_text = attr->asm_text;
+ const char *s = get_id_str(asm_text);
+
+ be_emit_cstring(env, "# Begin ASM \t");
+ be_emit_finish_line_gas(env, node);
+
+ if (s[0] != '\t')
+ be_emit_char(env, '\t');
+
+ while(*s != 0) {
+ if(*s == '%') {
+ s = emit_asm_operand(env, node, s);
+ continue;
+ } else {
+ be_emit_char(env, *s);
+ }
+ ++s;
+ }
+
+ be_emit_char(env, '\n');
+ be_emit_write_line(env);
+
+ be_emit_cstring(env, "# End ASM\n");
+ be_emit_write_line(env);
+}
+
/**********************************
* _____ ____
* / ____| | _ \
*/
static
void emit_ia32_CopyB(ia32_emit_env_t *env, const ir_node *node) {
- tarval *tv = get_ia32_Immop_tarval(node);
- int rem = get_tarval_long(tv);
+ int rem = get_ia32_pncode(node);
emit_CopyB_prolog(env, rem);
*/
static
void emit_ia32_CopyB_i(ia32_emit_env_t *env, const ir_node *node) {
- tarval *tv = get_ia32_Immop_tarval(node);
- int size = get_tarval_long(tv);
+ int size = get_ia32_pncode(node);
emit_CopyB_prolog(env, size & 0x3);
switch(get_ia32_op_type(node)) {
case ia32_Normal:
- ia32_emit_source_register(env, node, 2);
+ ia32_emit_source_register(env, node, n_ia32_unary_op);
be_emit_cstring(env, ", ");
ia32_emit_dest_register(env, node, 0);
break;
switch(get_ia32_op_type(node)) {
case ia32_Normal:
- in_reg = get_in_reg(env, node, 2);
+ in_reg = get_in_reg(env, node, n_ia32_unary_op);
out_reg = get_out_reg(env, node, 0);
- if (REGS_ARE_EQUAL(in_reg, &ia32_gp_regs[REG_EAX]) &&
- REGS_ARE_EQUAL(out_reg, in_reg) &&
- signed_mode)
+ if (in_reg == &ia32_gp_regs[REG_EAX] &&
+ out_reg == &ia32_gp_regs[REG_EAX] &&
+ signed_mode &&
+ smaller_bits == 16)
{
/* argument and result are both in EAX and */
- /* signedness is ok: -> use converts */
- if (smaller_bits == 8) {
- be_emit_cstring(env, "\tcbtw");
- } else if (smaller_bits == 16) {
- be_emit_cstring(env, "\tcwtl");
- } else {
- assert(0);
- }
- } else if (REGS_ARE_EQUAL(out_reg, in_reg) && !signed_mode) {
- /* argument and result are in the same register */
- /* and signedness is ok: -> use and with mask */
- int mask = (1 << smaller_bits) - 1;
- be_emit_cstring(env, "\tandl $0x");
- be_emit_irprintf(env->emit, "%x, ", mask);
- ia32_emit_dest_register(env, node, 0);
+ /* signedness is ok: -> use the smaller cwtl opcode */
+ be_emit_cstring(env, "\tcwtl");
} else {
const char *sreg = ia32_get_reg_name_for_mode(env, smaller_mode, in_reg);
be_emit_cstring(env, "\tmov");
be_emit_string(env, sign_suffix);
- ia32_emit_mode_suffix(env, smaller_mode);
+ ia32_emit_mode_suffix_mode(env, smaller_mode);
be_emit_cstring(env, "l %");
be_emit_string(env, sreg);
be_emit_cstring(env, ", ");
case ia32_AddrModeS: {
be_emit_cstring(env, "\tmov");
be_emit_string(env, sign_suffix);
- ia32_emit_mode_suffix(env, smaller_mode);
- be_emit_cstring(env, "l %");
+ ia32_emit_mode_suffix_mode(env, smaller_mode);
+ be_emit_cstring(env, "l ");
ia32_emit_am(env, node);
be_emit_cstring(env, ", ");
ia32_emit_dest_register(env, node, 0);
be_emit_cstring(env, "\tcall ");
if (ent) {
- mark_entity_visited(ent);
+ set_entity_backend_marked(ent, 1);
be_emit_string(env, get_entity_ld_name(ent));
} else {
be_emit_char(env, '*');
be_emit_finish_line_gas(env, node);
}
-/**
- * Emits code to set stack pointer.
- */
-static
-void emit_be_SetSP(ia32_emit_env_t *env, const ir_node *node) {
- be_emit_cstring(env, "\tmovl ");
- ia32_emit_source_register(env, node, 2);
- be_emit_cstring(env, ", ");
- ia32_emit_dest_register(env, node, 0);
- be_emit_finish_line_gas(env, node);
-}
-
/**
* Emits code for Copy/CopyKeep.
*/
static
void Copy_emitter(ia32_emit_env_t *env, const ir_node *node, const ir_node *op)
{
- const arch_env_t *aenv = env->arch_env;
+ const arch_env_t *arch_env = env->arch_env;
+ const arch_register_t *in = arch_get_irn_register(arch_env, op);
+ const arch_register_t *out = arch_get_irn_register(arch_env, node);
+ ir_mode *mode;
- if (REGS_ARE_EQUAL(arch_get_irn_register(aenv, node), arch_get_irn_register(aenv, op)) ||
- arch_register_type_is(arch_get_irn_register(aenv, op), virtual))
+ if(in == out) {
+ return;
+ }
+ if(is_unknown_reg(in))
+ return;
+ /* copies of vf nodes aren't real... */
+ if(arch_register_get_class(in) == &ia32_reg_classes[CLASS_ia32_vfp])
return;
- if (mode_is_float(get_irn_mode(node))) {
+ mode = get_irn_mode(node);
+ if (mode == mode_E) {
be_emit_cstring(env, "\tmovsd ");
- ia32_emit_source_register(env, node, 0);
+ ia32_emit_register(env, in);
be_emit_cstring(env, ", ");
- ia32_emit_dest_register(env, node, 0);
+ ia32_emit_register(env, out);
} else {
be_emit_cstring(env, "\tmovl ");
- ia32_emit_source_register(env, node, 0);
+ ia32_emit_register(env, in);
be_emit_cstring(env, ", ");
- ia32_emit_dest_register(env, node, 0);
+ ia32_emit_register(env, out);
}
be_emit_finish_line_gas(env, node);
}
*/
static
void emit_ia32_Const(ia32_emit_env_t *env, const ir_node *node) {
- ia32_immop_type_t imm_tp = get_ia32_immop_type(node);
+ const ia32_immediate_attr_t *attr = get_ia32_immediate_attr_const(node);
- if (imm_tp == ia32_ImmSymConst) {
- be_emit_cstring(env, "\tmovl $");
- ia32_emit_immediate(env, node);
+ /* a zero? */
+ if(attr->symconst == NULL && attr->offset == 0) {
+ assert(get_ia32_flags(node) & arch_irn_flags_modify_flags);
+ be_emit_cstring(env, "\txorl ");
+ ia32_emit_dest_register(env, node, 0);
be_emit_cstring(env, ", ");
ia32_emit_dest_register(env, node, 0);
} else {
- tarval *tv = get_ia32_Immop_tarval(node);
- assert(get_irn_mode(node) == mode_Iu);
- /* beware: in some rare cases mode is mode_b which has no tarval_null() */
- if (tarval_is_null(tv)) {
- if (env->isa->opt_arch == arch_pentium_4) {
- /* P4 prefers sub r, r, others xor r, r */
- be_emit_cstring(env, "\tsubl ");
- } else {
- be_emit_cstring(env, "\txorl ");
- }
- ia32_emit_dest_register(env, node, 0);
- be_emit_cstring(env, ", ");
- ia32_emit_dest_register(env, node, 0);
- } else {
- be_emit_cstring(env, "\tmovl $");
- ia32_emit_immediate(env, node);
- be_emit_cstring(env, ", ");
- ia32_emit_dest_register(env, node, 0);
- }
+ be_emit_cstring(env, "\tmovl ");
+ emit_ia32_Immediate(env, node);
+ be_emit_cstring(env, ", ");
+ ia32_emit_dest_register(env, node, 0);
}
+
be_emit_finish_line_gas(env, node);
}
be_emit_finish_line_gas(env, node);
}
+/* helper function for emit_ia32_Minus64Bit */
+static void emit_mov(ia32_emit_env_t *env, const ir_node* node, const arch_register_t *src, const arch_register_t *dst)
+{
+ be_emit_cstring(env, "\tmovl ");
+ ia32_emit_register(env, src);
+ be_emit_cstring(env, ", ");
+ ia32_emit_register(env, dst);
+ be_emit_finish_line_gas(env, node);
+}
+
+/* helper function for emit_ia32_Minus64Bit */
+static void emit_neg(ia32_emit_env_t *env, const ir_node* node, const arch_register_t *reg)
+{
+ be_emit_cstring(env, "\tnegl ");
+ ia32_emit_register(env, reg);
+ be_emit_finish_line_gas(env, node);
+}
+
+/* helper function for emit_ia32_Minus64Bit */
+static void emit_sbb0(ia32_emit_env_t *env, const ir_node* node, const arch_register_t *reg)
+{
+ be_emit_cstring(env, "\tsbbl $0, ");
+ ia32_emit_register(env, reg);
+ be_emit_finish_line_gas(env, node);
+}
+
+/* helper function for emit_ia32_Minus64Bit */
+static void emit_sbb(ia32_emit_env_t *env, const ir_node* node, const arch_register_t *src, const arch_register_t *dst)
+{
+ be_emit_cstring(env, "\tsbbl ");
+ ia32_emit_register(env, src);
+ be_emit_cstring(env, ", ");
+ ia32_emit_register(env, dst);
+ be_emit_finish_line_gas(env, node);
+}
+
+/* helper function for emit_ia32_Minus64Bit */
+static void emit_xchg(ia32_emit_env_t *env, const ir_node* node, const arch_register_t *src, const arch_register_t *dst)
+{
+ be_emit_cstring(env, "\txchgl ");
+ ia32_emit_register(env, src);
+ be_emit_cstring(env, ", ");
+ ia32_emit_register(env, dst);
+ be_emit_finish_line_gas(env, node);
+}
+
+/* helper function for emit_ia32_Minus64Bit */
+static void emit_zero(ia32_emit_env_t *env, const ir_node* node, const arch_register_t *reg)
+{
+ be_emit_cstring(env, "\txorl ");
+ ia32_emit_register(env, reg);
+ be_emit_cstring(env, ", ");
+ ia32_emit_register(env, reg);
+ be_emit_finish_line_gas(env, node);
+}
+
+static void emit_ia32_Minus64Bit(ia32_emit_env_t *env, const ir_node *node)
+{
+ const arch_register_t *in_lo = get_in_reg( env, node, 0);
+ const arch_register_t *in_hi = get_in_reg( env, node, 1);
+ const arch_register_t *out_lo = get_out_reg(env, node, 0);
+ const arch_register_t *out_hi = get_out_reg(env, node, 1);
+
+ if (out_lo == in_lo) {
+ if (out_hi != in_hi) {
+ /* a -> a, b -> d */
+ goto zero_neg;
+ } else {
+ /* a -> a, b -> b */
+ goto normal_neg;
+ }
+ } else if (out_lo == in_hi) {
+ if (out_hi == in_lo) {
+ /* a -> b, b -> a */
+ emit_xchg(env, node, in_lo, in_hi);
+ goto normal_neg;
+ } else {
+ /* a -> b, b -> d */
+ emit_mov(env, node, in_hi, out_hi);
+ emit_mov(env, node, in_lo, out_lo);
+ goto normal_neg;
+ }
+ } else {
+ if (out_hi == in_lo) {
+ /* a -> c, b -> a */
+ emit_mov(env, node, in_lo, out_lo);
+ goto zero_neg;
+ } else if (out_hi == in_hi) {
+ /* a -> c, b -> b */
+ emit_mov(env, node, in_lo, out_lo);
+ goto normal_neg;
+ } else {
+ /* a -> c, b -> d */
+ emit_mov(env, node, in_lo, out_lo);
+ goto zero_neg;
+ }
+ }
+
+normal_neg:
+ emit_neg( env, node, out_hi);
+ emit_neg( env, node, out_lo);
+ emit_sbb0(env, node, out_hi);
+ return;
+
+zero_neg:
+ emit_zero(env, node, out_hi);
+ emit_neg( env, node, out_lo);
+ emit_sbb( env, node, in_hi, out_hi);
+}
+
static
-void emit_be_Return(ia32_emit_env_t *env, const ir_node *node) {
+void emit_be_Return(ia32_emit_env_t *env, const ir_node *node)
+{
be_emit_cstring(env, "\tret");
be_emit_finish_line_gas(env, node);
}
static
-void emit_Nothing(ia32_emit_env_t *env, const ir_node *node) {
+void emit_Nothing(ia32_emit_env_t *env, const ir_node *node)
+{
+ (void) env;
+ (void) node;
}
ia32_register_spec_emitters();
/* other ia32 emitter functions */
- IA32_EMIT(CondJmp);
- IA32_EMIT(TestJmp);
- IA32_EMIT(CJmp);
- IA32_EMIT(CJmpAM);
- IA32_EMIT(CmpCMov);
- IA32_EMIT(PsiCondCMov);
- IA32_EMIT(CmpSet);
- IA32_EMIT(PsiCondSet);
+ IA32_EMIT(Asm);
+ IA32_EMIT(CMov);
IA32_EMIT(SwitchJmp);
IA32_EMIT(CopyB);
IA32_EMIT(CopyB_i);
IA32_EMIT(Conv_I2I8Bit);
IA32_EMIT(Const);
IA32_EMIT(LdTls);
+ IA32_EMIT(Minus64Bit);
+ IA32_EMIT(Jcc);
+#if 0
IA32_EMIT(xCmp);
- IA32_EMIT(xCmpSet);
- IA32_EMIT(xCmpCMov);
- IA32_EMIT(xCondJmp);
- IA32_EMIT2(fcomJmp, x87CondJmp);
- IA32_EMIT2(fcompJmp, x87CondJmp);
- IA32_EMIT2(fcomppJmp, x87CondJmp);
- IA32_EMIT2(fcomrJmp, x87CondJmp);
- IA32_EMIT2(fcomrpJmp, x87CondJmp);
- IA32_EMIT2(fcomrppJmp, x87CondJmp);
+ IA32_EMIT(xCmpJmp);
+ IA32_EMIT2(fcomJmp, x87CmpJmp);
+ IA32_EMIT2(fcompJmp, x87CmpJmp);
+ IA32_EMIT2(fcomppJmp, x87CmpJmp);
+ IA32_EMIT2(fcomrJmp, x87CmpJmp);
+ IA32_EMIT2(fcomrpJmp, x87CmpJmp);
+ IA32_EMIT2(fcomrppJmp, x87CmpJmp);
+#endif
/* benode emitter */
BE_EMIT(Call);
BE_EMIT(IncSP);
- BE_EMIT(SetSP);
BE_EMIT(Copy);
BE_EMIT(CopyKeep);
BE_EMIT(Perm);
(*func) (env, node);
} else {
emit_Nothing(env, node);
- ir_fprintf(stderr, "Warning: No emit handler for node %+F (%+G)\n", node, node);
+ ir_fprintf(stderr, "Error: No emit handler for node %+F (%+G, graph %+F)\n", node, node, current_ir_graph);
+ abort();
}
}
ia32_emit_alignment(env, align, maximum_skip);
}
+/**
+ * Test wether a block should be aligned.
+ * For cpus in the P4/Athlon class it is usefull to align jump labels to
+ * 16 bytes. However we should only do that if the alignment nops before the
+ * label aren't executed more often than we have jumps to the label.
+ */
static
-int is_first_loop_block(ia32_emit_env_t *env, ir_node *block, ir_node *prev_block) {
- ir_exec_freq *exec_freq = env->cg->birg->exec_freq;
- double block_freq, prev_freq;
+int should_align_block(ia32_emit_env_t *env, ir_node *block, ir_node *prev) {
static const double DELTA = .0001;
- cpu_support cpu = env->isa->opt_arch;
+ ir_exec_freq *exec_freq = env->cg->birg->exec_freq;
+ double block_freq;
+ double prev_freq = 0; /**< execfreq of the fallthrough block */
+ double jmp_freq = 0; /**< execfreq of all non-fallthrough blocks */
+ cpu_support cpu = env->isa->opt_arch;
+ int i, n_cfgpreds;
if(exec_freq == NULL)
return 0;
return 0;
block_freq = get_block_execfreq(exec_freq, block);
- prev_freq = get_block_execfreq(exec_freq, prev_block);
-
- if(block_freq < DELTA || prev_freq < DELTA)
+ if(block_freq < DELTA)
return 0;
- block_freq /= prev_freq;
+ n_cfgpreds = get_Block_n_cfgpreds(block);
+ for(i = 0; i < n_cfgpreds; ++i) {
+ ir_node *pred = get_Block_cfgpred_block(block, i);
+ double pred_freq = get_block_execfreq(exec_freq, pred);
+
+ if(pred == prev) {
+ prev_freq += pred_freq;
+ } else {
+ jmp_freq += pred_freq;
+ }
+ }
+
+ if(prev_freq < DELTA && !(jmp_freq < DELTA))
+ return 1;
+
+ jmp_freq /= prev_freq;
switch (cpu) {
case arch_athlon:
case arch_athlon_64:
case arch_k6:
- return block_freq > 3;
+ return jmp_freq > 3;
default:
- break;
+ return jmp_freq > 2;
}
-
- return block_freq > 2;
}
-/**
- * Walks over the nodes in a block connected by scheduling edges
- * and emits code for each node.
- */
static
-void ia32_gen_block(ia32_emit_env_t *env, ir_node *block, ir_node *last_block) {
- ir_graph *irg = get_irn_irg(block);
- ir_node *start_block = get_irg_start_block(irg);
- int need_label = 1;
- const ir_node *node;
- int i;
-
- assert(is_Block(block));
-
- if (block == start_block)
- need_label = 0;
-
- if (need_label && get_irn_arity(block) == 1) {
- ir_node *pred_block = get_Block_cfgpred_block(block, 0);
-
- if (pred_block == last_block && get_irn_n_edges_kind(pred_block, EDGE_KIND_BLOCK) <= 2)
- need_label = 0;
- }
+void ia32_emit_block_header(ia32_emit_env_t *env, ir_node *block, ir_node *prev)
+{
+ int n_cfgpreds;
+ int need_label;
+ int i, arity;
+ ir_exec_freq *exec_freq = env->cg->birg->exec_freq;
- /* special case: if one of our cfg preds is a switch-jmp we need a label, */
- /* otherwise there might be jump table entries jumping to */
- /* non-existent (omitted) labels */
- for (i = get_Block_n_cfgpreds(block) - 1; i >= 0; --i) {
- ir_node *pred = get_Block_cfgpred(block, i);
+ n_cfgpreds = get_Block_n_cfgpreds(block);
+ need_label = (n_cfgpreds != 0);
- if (is_Proj(pred)) {
- assert(get_irn_mode(pred) == mode_X);
- if (is_ia32_SwitchJmp(get_Proj_pred(pred))) {
- need_label = 1;
- break;
- }
- }
+ if (should_align_block(env, block, prev)) {
+ assert(need_label);
+ ia32_emit_align_label(env, env->isa->opt_arch);
}
- if (need_label) {
- int i, arity;
- int align = 1;
- ir_exec_freq *exec_freq = env->cg->birg->exec_freq;
+ if(need_label) {
+ ia32_emit_block_name(env, block);
+ be_emit_char(env, ':');
- /* align the loop headers */
- if (! is_first_loop_block(env, block, last_block)) {
- /* align blocks where the previous block has no fallthrough */
- arity = get_irn_arity(block);
-
- for (i = 0; i < arity; ++i) {
- ir_node *predblock = get_Block_cfgpred_block(block, i);
-
- if (predblock == last_block) {
- align = 0;
- break;
- }
- }
- }
-
- if (align)
- ia32_emit_align_label(env, env->isa->opt_arch);
-
- be_emit_cstring(env, BLOCK_PREFIX);
- be_emit_irprintf(env->emit, "%d:", get_irn_node_nr(block));
be_emit_pad_comment(env);
be_emit_cstring(env, " /* preds:");
ir_node *predblock = get_Block_cfgpred_block(block, i);
be_emit_irprintf(env->emit, " %d", get_irn_node_nr(predblock));
}
-
- if (exec_freq != NULL) {
- be_emit_irprintf(env->emit, " freq: %f", get_block_execfreq(exec_freq, block));
- }
- be_emit_cstring(env, " */\n");
- be_emit_write_line(env);
+ } else {
+ be_emit_cstring(env, "\t/* ");
+ ia32_emit_block_name(env, block);
+ be_emit_cstring(env, ": ");
+ }
+ if (exec_freq != NULL) {
+ be_emit_irprintf(env->emit, " freq: %f",
+ get_block_execfreq(exec_freq, block));
}
+ be_emit_cstring(env, " */\n");
+ be_emit_write_line(env);
+}
+
+/**
+ * Walks over the nodes in a block connected by scheduling edges
+ * and emits code for each node.
+ */
+static
+void ia32_gen_block(ia32_emit_env_t *env, ir_node *block, ir_node *last_block)
+{
+ const ir_node *node;
+
+ ia32_emit_block_header(env, block, last_block);
/* emit the contents of the block */
ia32_emit_dbg(env, block);
* Sets labels for control flow nodes (jump target)
*/
static
-void ia32_gen_labels(ir_node *block, void *data) {
+void ia32_gen_labels(ir_node *block, void *data)
+{
ir_node *pred;
int n = get_Block_n_cfgpreds(block);
+ (void) data;
for (n--; n >= 0; n--) {
pred = get_Block_cfgpred(block, n);
}
}
+/**
+ * Emit an exception label if the current instruction can fail.
+ */
+void ia32_emit_exc_label(ia32_emit_env_t *env, const ir_node *node) {
+ if (get_ia32_exc_label(node)) {
+ be_emit_irprintf(env->emit, ".EXL%u\n", 0);
+ be_emit_write_line(env);
+ }
+}
+
/**
* Main driver. Emits the code for one routine.
*/
env.arch_env = cg->arch_env;
env.cg = cg;
- /* we mark referenced global entities */
- inc_master_type_visited();
-
ia32_register_emitters();
ia32_emit_func_prolog(&env, irg);
projects / libfirm / blobdiff