Check operand for type, not LHS.
When folding, the LHS has not been set, so we should be checking the type of op1. We should also make sure op1 is not undefined. PR tree-optimization/105597 gcc/ * range-op.cc (operator_minus::lhs_op1_relation): Use op1 instead of the lhs and make sure it is not undefined. gcc/testsuite/ * gcc.dg/pr105597.c: New.
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@ -1343,10 +1343,10 @@ operator_minus::wi_fold (irange &r, tree type,
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// OP1 and OP2.
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relation_kind
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operator_minus::lhs_op1_relation (const irange &lhs, const irange &,
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operator_minus::lhs_op1_relation (const irange &, const irange &op1,
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const irange &, relation_kind rel) const
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{
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if (TYPE_SIGN (lhs.type ()) == UNSIGNED)
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if (!op1.undefined_p () && TYPE_SIGN (op1.type ()) == UNSIGNED)
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switch (rel)
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{
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case VREL_GT:
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@ -0,0 +1,27 @@
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/* PR tree-optimization/105597 */
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/* { dg-do compile } */
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/* { dg-options "-O2 -Wno-int-conversion" } */
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typedef struct {
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int allocated;
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} vvec;
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int vvneeds_want, mgpssort;
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void vvinit(vvec *v, int minelems) { v->allocated = -minelems; }
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void vvneeds(vvec *v, int needed) {
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if (needed > v->allocated)
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if (v->allocated < 0)
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;
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else {
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int next = v->allocated + (v->allocated >> 1);
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vvneeds_want = next;
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}
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}
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void mgpssort_1() {
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vvinit((vvec *) &mgpssort, mgpssort_1);
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vvneeds((vvec *) &mgpssort, mgpssort_1);
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}
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