At linearization (and maybe in some other situations), dead
intructions are created. Currently, it's the simplification
phase's job to detect and remove these dead instructions
(cfr. dead_insn()).
However, several intructions, not otherwise concerned by
simplification are never so detected and thus never removed.
Add those instructions to simplify_instruction() and call
dead_insn() on them to remove them if dead.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx>
---
simplify.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/simplify.c b/simplify.c
index 6f2eb1182..a399a9355 100644
--- a/simplify.c
+++ b/simplify.c
@@ -1222,6 +1222,15 @@ int simplify_instruction(struct instruction *insn)
if (dead_insn(insn, &insn->src, NULL, NULL))
return REPEAT_CSE;
break;
+ case OP_SLICE:
+ if (dead_insn(insn, &insn->src, NULL, NULL))
+ return REPEAT_CSE;
+ break;
+ case OP_SETVAL:
+ case OP_SETFVAL:
+ if (dead_insn(insn, NULL, NULL, NULL))
+ return REPEAT_CSE;
+ break;
case OP_PHI:
if (dead_insn(insn, NULL, NULL, NULL)) {
kill_use_list(insn->phi_list);
--
2.18.0
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