The function phi_defines() does the liveness tracking of phi-pseudos
(pseudos in OP_PHIs args). While doing this, the function is
recursively called when the pseudo would be defined by another phi-node;
but this condition is impossible because all phi-pseudos are defined
by OP_PHISOURCE instructions.
This patch remove the recursive call and its associated test.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx>
---
liveness.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/liveness.c b/liveness.c
index eeff0f79..fb696720 100644
--- a/liveness.c
+++ b/liveness.c
@@ -23,10 +23,6 @@ static void phi_defines(struct instruction * phi_node, pseudo_t target,
def = phi->def;
if (!def || !def->bb)
continue;
- if (def->opcode == OP_PHI) {
- phi_defines(def, target, defines);
- continue;
- }
defines(def->bb, phi->def, target);
} END_FOR_EACH_PTR(phi);
}
--
2.10.2
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