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Fix SCCP problems

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This commit is contained in:
Dmitry Stogov 2022-09-14 14:27:52 +03:00
parent 75ce65ce65
commit 14ffff68dc
1 changed files with 4 additions and 1 deletions
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5
ir_sccp.c
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@ -442,7 +442,7 @@ int ir_sccp(ir_ctx *ctx)
_values[i+j+1].optx = IR_BOTTOM; /* keep the tail of a long multislot instruction */
}
}
for (j = 1; j <= n; j++) {
for (j = 1; j < n; j++) {
if (merge_insn->ops[j] && IR_IS_REACHABLE(merge_insn->ops[j])) {
if (ir_sccp_join_values(ctx, _values, i, insn->ops[j + 1])) {
changed = 1;
@ -462,6 +462,9 @@ int ir_sccp(ir_ctx *ctx)
// } else
if (IR_IS_TOP(insn->ops[j])) {
has_top = 1;
if (!ir_bitqueue_in(&worklist, insn->ops[j])) {
ir_bitqueue_add(&worklist, insn->ops[j]);
}
}
}
if (has_top) {