[PATCH 14/16] use kill_instruction() when killing an OP_PHI during CSE

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cse_one_instruction() contains some code to be executed when
an OP_PHI is eliminated. This code is roughly equivalent to
what is done in kill_instruction() for OP_PHI but not complete
since it doesn't recursively try to kill others instructions
which are used only by this OP_PHI.

Fix this and avoid duplicated code by replacing this code by
a call to kill_instruction().

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx>
---
 cse.c | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/cse.c b/cse.c
index e8fbe344f..165b862af 100644
--- a/cse.c
+++ b/cse.c
@@ -252,15 +252,7 @@ static struct instruction * cse_one_instruction(struct instruction *insn, struct
 	convert_instruction_target(insn, def->target);
 
 	if (insn->opcode == OP_PHI) {
-		/* Remove the instruction from PHI users */
-		pseudo_t phi;
-		FOR_EACH_PTR(insn->phi_list, phi) {
-			struct pseudo_user *pu;
-			FOR_EACH_PTR(phi->users, pu) {
-				if (pu->insn == insn)
-					DELETE_CURRENT_PTR(pu);
-			} END_FOR_EACH_PTR(pu);
-		} END_FOR_EACH_PTR(phi);
+		kill_instruction(insn);
 	}
 
 	insn->opcode = OP_NOP;
-- 
2.11.0

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