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Don't attach a dag label to its own node.

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This kills a = a; statements :)
This commit is contained in:
Bill Currie 2012-11-21 12:16:10 +09:00
parent 0583dc82d3
commit 2c09464e80
1 changed files with 1 additions and 1 deletions
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2
tools/qfcc/source/dags.c
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@ -485,7 +485,7 @@ dag_create (flownode_t *flownode)
} }
} }
lx = operand_label (dag, operands[0]); lx = operand_label (dag, operands[0]);
if (lx) { if (lx && lx->dagnode != n) {
lx->expr = s->expr; lx->expr = s->expr;
dagnode_attach_label (n, lx); dagnode_attach_label (n, lx);
} }