FILE *F = env->out;
const lc_arg_env_t *arg_env = ia32_get_arg_env();
int sse_pnc = -1;
+ long pnc = get_ia32_pncode(irn);
+ long unord = pnc & pn_Cmp_Uo;
char cmd_buf[SNPRINTF_BUF_LEN];
char cmnt_buf[SNPRINTF_BUF_LEN];
- switch (get_ia32_pncode(irn)) {
+ switch (pnc) {
case pn_Cmp_Leg: /* odered */
sse_pnc = 7;
break;
case pn_Cmp_Uo: /* unordered */
sse_pnc = 3;
break;
- case pn_Cmp_Ue: /* == */
+ case pn_Cmp_Ue:
+ case pn_Cmp_Eq: /* == */
sse_pnc = 0;
break;
- case pn_Cmp_Ul: /* < */
+ case pn_Cmp_Ul:
+ case pn_Cmp_Lt: /* < */
sse_pnc = 1;
break;
- case pn_Cmp_Ule: /* <= */
+ case pn_Cmp_Ule:
+ case pn_Cmp_Le: /* <= */
sse_pnc = 2;
break;
- case pn_Cmp_Ug: /* > */
+ case pn_Cmp_Ug:
+ case pn_Cmp_Gt: /* > */
sse_pnc = 6;
break;
- case pn_Cmp_Uge: /* >= */
+ case pn_Cmp_Uge:
+ case pn_Cmp_Ge: /* >= */
sse_pnc = 5;
break;
- case pn_Cmp_Ne: /* != */
+ case pn_Cmp_Ne:
+ case pn_Cmp_Lg: /* != */
sse_pnc = 4;
break;
}
- assert(sse_pnc >= 0 && "unsupported floating point compare");
-
- lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "cmps%M %s, %d", irn, ia32_emit_binop(irn, env), sse_pnc);
- lc_esnprintf(arg_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* SSE compare with result in %1D */", irn);
+ assert(sse_pnc >= 0 && "unsupported compare");
+
+ if (unord && sse_pnc != 3) {
+ /*
+ We need a separate compare against unordered.
+ Quick and Dirty solution:
+ - get some memory on stack
+ - compare
+ - store result
+ - compare
+ - and result and stored result
+ - cleanup stack
+ */
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "sub %%esp, 8");
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* reserve some space for unordered compare result */");
+ IA32_DO_EMIT(NULL);
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "cmpsd %s, 3", ia32_emit_binop(irn, env));
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* SSE compare: unordered */");
+ IA32_DO_EMIT(NULL);
+ lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "movsd [%%esp], %1D", irn);
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* store compare result */");
+ IA32_DO_EMIT(NULL);
+ }
+
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "cmpsd %s, %d", ia32_emit_binop(irn, env), sse_pnc);
+ lc_esnprintf(arg_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* SSE compare (%+F) with result in %1D */", irn, irn);
IA32_DO_EMIT(irn);
+
+ if (unord && sse_pnc != 3) {
+ lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "andpd %1D, [%%esp]", irn);
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* build the final result */");
+ IA32_DO_EMIT(NULL);
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "add %%esp, 8");
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* free allocated space */");
+ IA32_DO_EMIT(NULL);
+ }
}
/*********************************************************
IA32_DO_EMIT(irn);
}
-/**
- * Emits code to increase stack pointer.
- */
-static void emit_be_AddSP(const ir_node *irn, ia32_emit_env_t *emit_env) {
- FILE *F = emit_env->out;
- char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
-
- lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "sub %1D, %2S", irn, irn);
- snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* reserve space on stack */");
-
- IA32_DO_EMIT(irn);
-}
-
/**
* Emits code to increase stack pointer.
*/
lc_efprintf(arg_env, F, "\t%-35s %-60s /* %+F (%+G) */\n", cmd_buf, cmnt_buf, n, n);
}
+/**
+ * Emits code to increase stack pointer.
+ */
+static void emit_ia32_AddSP(const ir_node *irn, ia32_emit_env_t *emit_env) {
+ FILE *F = emit_env->out;
+ char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
+
+ if (is_ia32_ImmConst(irn)) {
+ lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "sub %1D, %C", irn, irn);
+ }
+ else if (is_ia32_ImmSymConst(irn)) {
+ if (get_ia32_op_type(irn) == ia32_Normal)
+ lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "sub %1D, OFFSET_FLAT:%C", irn, irn);
+ else /* source address mode */
+ lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "sub %1D, [%s%s]", irn, get_id_str(get_ia32_am_sc(irn)), get_ia32_am_offs(irn));
+ }
+ else {
+ lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "sub %1D, %2S", irn, irn);
+ }
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* reserve space on stack */");
+
+ IA32_DO_EMIT(irn);
+}
+
static void emit_be_Return(const ir_node *n, ia32_emit_env_t *env) {
FILE *F = env->out;
const lc_arg_env_t *arg_env = ia32_get_arg_env();
IA32_EMIT(Conv_I2I);
IA32_EMIT(Conv_I2I8Bit);
IA32_EMIT(Const);
+ IA32_EMIT(AddSP);
IA32_EMIT(xCmp);
IA32_EMIT(xCmpSet);
IA32_EMIT(xCmpCMov);
/* benode emitter */
BE_EMIT(Call);
- BE_EMIT(AddSP);
BE_EMIT(IncSP);
BE_EMIT(SetSP);
BE_EMIT(Copy);
unsigned align; unsigned maximum_skip;
/* gcc doesn't emit alignment for p4 ?*/
- if (cpu == arch_pentium_4)
+ if (cpu == arch_pentium_4)
return;
switch (cpu) {
static void ia32_gen_block(ir_node *block, void *env) {
ia32_emit_env_t *emit_env = env;
const ir_node *irn;
+ char cmd_buf[SNPRINTF_BUF_LEN];
+ char cmnt_buf[SNPRINTF_BUF_LEN];
int need_label = block != get_irg_start_block(get_irn_irg(block));
+ FILE *F = emit_env->out;
if (! is_Block(block))
return;
}
if (need_label) {
+ int i, arity;
+ char* predstring = cmnt_buf;
+ size_t cmntsize;
+ int res;
+
ia32_emit_align_label(emit_env->out, emit_env->isa->opt_arch);
- fprintf(emit_env->out, BLOCK_PREFIX("%ld:\n"), get_irn_node_nr(block));
+
+ ir_snprintf(cmd_buf, sizeof(cmd_buf), BLOCK_PREFIX("%d:"),
+ get_irn_node_nr(block));
+
+ /* emit list of pred blocks in comment */
+ cmntsize = sizeof(cmnt_buf);
+ res = snprintf(predstring, cmntsize, "/* preds: ");
+ cmntsize -= res;
+ predstring += res;
+
+ arity = get_irn_arity(block);
+ for(i = 0; i < arity; ++i) {
+ ir_node *predblock = get_Block_cfgpred_block(block, i);
+ res = snprintf(predstring, cmntsize, " %ld", get_irn_node_nr(predblock));
+ cmntsize -= res;
+ predstring += res;
+ if(cmntsize <= 3)
+ break;
+ }
+ if(cmntsize < 3) {
+ predstring = cmnt_buf + sizeof(cmnt_buf) - 3;
+ cmntsize = 3;
+ }
+ snprintf(predstring, cmntsize, "*/");
+ fprintf(F, "%-43s %-60s\n", cmd_buf, cmnt_buf);
}
+ /* emit the contents of the block */
sched_foreach(block, irn) {
ia32_emit_node(irn, env);
}
projects / libfirm / blobdiff