https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80635
--- Comment #48 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Jeffrey A. Law from comment #47)
> Martin, yea, your patch does prevent creation of the V_C_E. That in turn
> allows maybe_a$live_7 to be directly used in the conditional which in turn
> allows tree-ssa-uninit.c to realize the problematic path isn't runtime
> feasible and suppresses the warning.
This should also work too:
diff --git a/gcc/tree-sra.c b/gcc/tree-sra.c
index ea8594db193..83b1d981439 100644
--- a/gcc/tree-sra.c
+++ b/gcc/tree-sra.c
@@ -2499,6 +2499,7 @@ analyze_access_subtree (struct access *root, struct
access *parent,
For integral types this means the precision has to match.
Avoid assumptions based on the integral type kind, too. */
if (INTEGRAL_TYPE_P (root->type)
+ && TREE_CODE (root->type) != BOOLEAN_TYPE
&& (TREE_CODE (root->type) != INTEGER_TYPE
|| TYPE_PRECISION (root->type) != root->size)
/* But leave bitfield accesses alone. */
---- CUT ----