[Bug c/105134] tree-vectorize produces error code

[piliu at redhat dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105134

--- Comment #2 from piliu at redhat dot com ---
More specific, the following directive beats out the bug.

diff --git a/util_lib/sha256.c b/util_lib/sha256.c
index 2e61a31..3b3e533 100644
--- a/util_lib/sha256.c
+++ b/util_lib/sha256.c
@@ -38,6 +38,7 @@
        (b)[(i) + 3] = (uint8_t) ( (n)       ); \
 }

+ __attribute__((optimize("no-tree-vectorize")))
 void sha256_starts( sha256_context *ctx )