This helper simply create a pseudo of type PSEUDO_UNDEF.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx>
---
linearize.c | 7 +++++++
linearize.h | 1 +
2 files changed, 8 insertions(+)
diff --git a/linearize.c b/linearize.c
index aadecfc5d..3ef65d585 100644
--- a/linearize.c
+++ b/linearize.c
@@ -823,6 +823,13 @@ static pseudo_t argument_pseudo(struct entrypoint *ep, int nr)
return pseudo;
}
+pseudo_t undef_pseudo(void)
+{
+ pseudo_t pseudo = __alloc_pseudo(0);
+ pseudo->type = PSEUDO_UNDEF;
+ return pseudo;
+}
+
pseudo_t alloc_phi(struct basic_block *source, pseudo_t pseudo, struct symbol *type)
{
struct instruction *insn;
diff --git a/linearize.h b/linearize.h
index 54fcf2a46..060d5f327 100644
--- a/linearize.h
+++ b/linearize.h
@@ -335,6 +335,7 @@ extern void insert_branch(struct basic_block *bb, struct instruction *br, struct
pseudo_t alloc_phi(struct basic_block *source, pseudo_t pseudo, struct symbol *type);
pseudo_t alloc_pseudo(struct instruction *def);
pseudo_t value_pseudo(long long val);
+pseudo_t undef_pseudo(void);
struct entrypoint *linearize_symbol(struct symbol *sym);
int unssa(struct entrypoint *ep);
--
2.14.0
--
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