| Line 397... |
Line 397... |
modified = 0;
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modified = 0;
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for (b = 0; b < f->num_bb; b++) if (!(f->bb[b].type & BB_DEAD)) {
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for (b = 0; b < f->num_bb; b++) if (!(f->bb[b].type & BB_DEAD)) {
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for (i = 0; i < f->bb[b].ninsn; i++) {
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for (i = 0; i < f->bb[b].ninsn; i++) {
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cuc_insn *ii = &f->bb[b].insn[i];
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cuc_insn *ii = &f->bb[b].insn[i];
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/* We tend to have the third parameter const if instruction is cumutative */
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/* We tend to have the third parameter const if instruction is cumutative */
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if ((ii->opt[1] & OPT_CONST) && !(ii->opt[2] & OPT_CONST)
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if ((ii->opt[1] & OPT_CONST) && !(ii->opt[2] & OPT_CONST)) {
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&& known[ii->index].comutative) {
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int cond = ii->index == II_SFEQ || ii->index == II_SFNE
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|| ii->index == II_SFLT || ii->index == II_SFLE
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|| ii->index == II_SFGT || ii->index == II_SFGE;
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if (known[ii->index].comutative || cond) {
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unsigned long t = ii->opt[1];
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unsigned long t = ii->opt[1];
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ii->opt[1] = ii->opt[2];
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ii->opt[1] = ii->opt[2];
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ii->opt[2] = t;
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ii->opt[2] = t;
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t = ii->op[1];
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t = ii->op[1];
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ii->op[1] = ii->op[2];
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ii->op[1] = ii->op[2];
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ii->op[2] = t;
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ii->op[2] = t;
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modified = 1; cucdebug (2, "%08x:<>\n", REF(b, i));
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modified = 1; cucdebug (2, "%08x:<>\n", REF(b, i));
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if (cond) {
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if (ii->index == II_SFEQ) ii->index = II_SFNE;
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else if (ii->index == II_SFNE) ii->index = II_SFEQ;
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else if (ii->index == II_SFLE) ii->index = II_SFGT;
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else if (ii->index == II_SFLT) ii->index = II_SFGE;
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else if (ii->index == II_SFGE) ii->index = II_SFLT;
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else if (ii->index == II_SFGT) ii->index = II_SFLE;
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else assert (0);
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}
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}
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}
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}
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|
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/* Try to do the promotion */
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/* Try to do the promotion */
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/* We have two consecutive expressions, containing constants,
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/* We have two consecutive expressions, containing constants,
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* if previous is a simple expression we can handle it simply: */
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* if previous is a simple expression we can handle it simply: */
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| Line 511... |
Line 524... |
} else /* sub - add joining */
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} else /* sub - add joining */
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if (ii->index == II_SUB && prev->index == II_ADD) {
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if (ii->index == II_SUB && prev->index == II_ADD) {
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ii->op[1] = prev->op[1]; ii->opt[1] = prev->opt[1];
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ii->op[1] = prev->op[1]; ii->opt[1] = prev->opt[1];
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ii->op[2] += prev->op[2];
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ii->op[2] += prev->op[2];
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modified = 1; cucdebug (2, "%8x: sub-add\n", REF(b, i));
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modified = 1; cucdebug (2, "%8x: sub-add\n", REF(b, i));
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} else /* add - sfxx joining */
|
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if (prev->index == II_ADD && (
|
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ii->index == II_SFEQ || ii->index == II_SFNE
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|| ii->index == II_SFLT || ii->index == II_SFLE
|
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|| ii->index == II_SFGT || ii->index == II_SFGE)) {
|
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if (ii->opt[2] & OPT_CONST) {
|
|
ii->op[1] = prev->op[1]; ii->opt[1] = prev->opt[1];
|
|
ii->op[2] -= prev->op[2];
|
|
modified = 1; cucdebug (2, "%8x: add-sfxx\n", REF(b, i));
|
|
}
|
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} else /* sub - sfxx joining */
|
|
if (prev->index == II_SUB && (
|
|
ii->index == II_SFEQ || ii->index == II_SFNE
|
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|| ii->index == II_SFLT || ii->index == II_SFLE
|
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|| ii->index == II_SFGT || ii->index == II_SFGE)) {
|
|
if (ii->opt[2] & OPT_CONST) {
|
|
ii->op[1] = prev->op[1]; ii->opt[1] = prev->opt[1];
|
|
ii->op[2] += prev->op[2];
|
|
modified = 1; cucdebug (2, "%8x: sub-sfxx\n", REF(b, i));
|
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
