Fix accounting of offsets in unadjusted_ptr_and_unit_offset

unadjusted_ptr_and_unit_offset accidentally throws away the offset computed by
get_addr_base_and_unit_offset. Instead of passing extra_offset it passes offset.

	PR ipa/114207

gcc/ChangeLog:

	* ipa-prop.cc (unadjusted_ptr_and_unit_offset): Fix accounting of offsets in ADDR_EXPR.

gcc/testsuite/ChangeLog:

	* gcc.c-torture/execute/pr114207.c: New test.

1 files changed, 23 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.c-torture/execute/pr114207.c b/gcc/testsuite/gcc.c-torture/execute/pr114207.c
new file mode 100644
index 0000000..052fa85
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/pr114207.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include <stdint.h>
+
+struct S {
+    int a, b;
+};
+
+__attribute__((noinline))
+void foo (struct S *s) {
+    struct S ss = (struct S) {
+        .a = s->b,
+        .b = s->a
+    };
+    *s = ss;
+}
+
+int main() {
+  struct S s = {6, 12};
+  foo(&s);
+  if (s.a != 12 || s.b != 6)
+    __builtin_abort ();
+  return 0;
+}