tarval *const tv_lo = cpair->tv_lo;
tarval *const tv_hi = cpair->tv_hi;
+ /* Beware of NaN's, we can only check for (ordered) != here (which is Lg, not Ne) */
if ((pnc_lo == pn_Cmp_Lt || pnc_lo == pn_Cmp_Le || pnc_lo == pn_Cmp_Eq) &&
(pnc_hi == pn_Cmp_Eq || pnc_hi == pn_Cmp_Ge || pnc_hi == pn_Cmp_Gt)) {
/* x <|<=|== lo | x ==|>=|> hi -> false */
ir_node *const t = new_Const(mode_b, tarval_b_false);
return t;
} else if ((pnc_lo == pn_Cmp_Lt || pnc_lo == pn_Cmp_Le || pnc_lo == pn_Cmp_Eq) &&
- (pnc_hi == pn_Cmp_Lt || pnc_hi == pn_Cmp_Le || pnc_hi == pn_Cmp_Ne)) {
+ (pnc_hi == pn_Cmp_Lt || pnc_hi == pn_Cmp_Le || pnc_hi == pn_Cmp_Lg)) {
/* x <|<=|== lo && x <|<=|!= hi -> x <|<=|== lo */
return proj_lo;
- } else if ((pnc_lo == pn_Cmp_Ge || pnc_lo == pn_Cmp_Gt || pnc_lo == pn_Cmp_Ne) &&
+ } else if ((pnc_lo == pn_Cmp_Ge || pnc_lo == pn_Cmp_Gt || pnc_lo == pn_Cmp_Lg) &&
(pnc_hi == pn_Cmp_Eq || pnc_hi == pn_Cmp_Ge || pnc_hi == pn_Cmp_Gt)) {
/* x >=|>|!= lo || x ==|>=|> hi -> x ==|>=|> hi */
return proj_hi;
ir_node *const p = new_r_Proj(irg, block, cmp_lo, mode_b, pn_Cmp_Eq);
return p;
} else if (pnc_lo == pn_Cmp_Gt) {
- if (pnc_hi == pn_Cmp_Ne) {
+ if (pnc_hi == pn_Cmp_Lg) {
/* x > c || x != c + 1 -> x > c + 1 */
ir_graph *const irg = current_ir_graph;
ir_node *const block = get_nodes_block(cmp_hi);
ir_node *const p = new_r_Proj(irg, block, cmp_hi, mode_b, pn_Cmp_Eq);
return p;
}
- } else if (pnc_lo == pn_Cmp_Ne && pnc_hi == pn_Cmp_Lt) {
+ } else if (pnc_lo == pn_Cmp_Lg && pnc_hi == pn_Cmp_Lt) {
/* x != c || c < c + 1 -> x < c */
ir_graph *const irg = current_ir_graph;
ir_node *const block = get_nodes_block(cmp_lo);
tarval *const tv_lo = cpair->tv_lo;
tarval *const tv_hi = cpair->tv_hi;
- if ((pnc_lo == pn_Cmp_Ge || pnc_lo == pn_Cmp_Gt || pnc_lo == pn_Cmp_Ne) &&
- (pnc_hi == pn_Cmp_Lt || pnc_hi == pn_Cmp_Le || pnc_hi == pn_Cmp_Ne)) {
+ /* Beware of NaN's, we can only check for (ordered) != here (which is Lg, not Ne) */
+ if ((pnc_lo == pn_Cmp_Ge || pnc_lo == pn_Cmp_Gt || pnc_lo == pn_Cmp_Lg) &&
+ (pnc_hi == pn_Cmp_Lt || pnc_hi == pn_Cmp_Le || pnc_hi == pn_Cmp_Lg)) {
/* x >=|>|!= lo | x <|<=|!= hi -> true */
ir_node *const t = new_Const(mode_b, tarval_b_true);
return t;
} else if ((pnc_lo == pn_Cmp_Lt || pnc_lo == pn_Cmp_Le || pnc_lo == pn_Cmp_Eq) &&
- (pnc_hi == pn_Cmp_Lt || pnc_hi == pn_Cmp_Le || pnc_hi == pn_Cmp_Ne)) {
+ (pnc_hi == pn_Cmp_Lt || pnc_hi == pn_Cmp_Le || pnc_hi == pn_Cmp_Lg)) {
/* x <|<=|== lo || x <|<=|!= hi -> x <|<=|!= hi */
return proj_hi;
- } else if ((pnc_lo == pn_Cmp_Ge || pnc_lo == pn_Cmp_Gt || pnc_lo == pn_Cmp_Ne) &&
+ } else if ((pnc_lo == pn_Cmp_Ge || pnc_lo == pn_Cmp_Gt || pnc_lo == pn_Cmp_Lg) &&
(pnc_hi == pn_Cmp_Eq || pnc_hi == pn_Cmp_Ge || pnc_hi == pn_Cmp_Gt)) {
/* x >=|>|!= lo || x ==|>=|> hi -> x >=|>|!= lo */
return proj_lo;
/* x < c || x >= c + 1 -> x != c */
ir_graph *const irg = current_ir_graph;
ir_node *const block = get_nodes_block(cmp_lo);
- ir_node *const p = new_r_Proj(irg, block, cmp_lo, mode_b, pn_Cmp_Ne);
+ ir_node *const p = new_r_Proj(irg, block, cmp_lo, mode_b, pn_Cmp_Lg);
return p;
} else if (pnc_lo == pn_Cmp_Le) {
if (pnc_hi == pn_Cmp_Eq) {
/* x <= c || x > c + 1 -> x != c + 1 */
ir_graph *const irg = current_ir_graph;
ir_node *const block = get_nodes_block(cmp_hi);
- ir_node *const p = new_r_Proj(irg, block, cmp_hi, mode_b, pn_Cmp_Ne);
+ ir_node *const p = new_r_Proj(irg, block, cmp_hi, mode_b, pn_Cmp_Lg);
return p;
}
} else if (pnc_lo == pn_Cmp_Eq && pnc_hi == pn_Cmp_Ge) {
}
}
-ir_node *skip_empty_block(ir_node *node)
+/**
+ * If node is a Jmp in a block containing no pinned instruction
+ * and having only one predecessor, skip the block and return its
+ * cf predecessor, else the node itself.
+ */
+static ir_node *skip_empty_block(ir_node *node)
{
ir_node *block;
if(!is_Proj(lower_cf))
continue;
- lower_block = get_nodes_block(lower_cf);
- if(get_Block_n_cfgpreds(lower_block) != 1)
- continue;
-
cond = get_Proj_pred(lower_cf);
if(!is_Cond(cond))
continue;
- cond_selector = get_Cond_selector(cond);
- if(get_irn_mode(cond_selector) != mode_b)
+ lower_block = get_nodes_block(cond);
+ if(get_Block_n_cfgpreds(lower_block) != 1)
continue;
/* the block must not produce any side-effects */
if(get_Block_mark(lower_block))
continue;
+ cond_selector = get_Cond_selector(cond);
+ if(get_irn_mode(cond_selector) != mode_b)
+ continue;
+
lower_pred = get_Block_cfgpred_block(lower_block, 0);
for(i2 = 0; i2 < n_cfgpreds; ++i2) {
continue;
/* normalize pncs: we need the true case to jump into the
- * common block */
+ * common block (ie. conjunctive normal form) */
irg = current_ir_graph;
if(get_Proj_proj(lower_cf) == pn_Cond_false) {
if(cpair.proj_lo == cond_selector) {