Copy condition->expr map when inlining [PR114599]

When a function is tree-inlined, copy the condition -> expression mapping
from the inlined function into the caller, shifted so uids are not
mixed.  Tree inlining was always problematic under condition coverage -
either through a nullptr dereference (triggered by the test case), or
through quietly mixing caller conditions with the callee conditions.

	PR middle-end/114599

gcc/ChangeLog:

	* tree-inline.cc (add_local_variables): Copy cond_uids mappings.

gcc/testsuite/ChangeLog:

	* gcc.misc-tests/gcov-pr114599.c: New test.

1 files changed, 25 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.misc-tests/gcov-pr114599.c b/gcc/testsuite/gcc.misc-tests/gcov-pr114599.c
new file mode 100644
index 0000000..e4c78c9
--- /dev/null
+++ b/gcc/testsuite/gcc.misc-tests/gcov-pr114599.c
@@ -0,0 +1,25 @@
+/* PR middle-end/114599 */
+/* { dg-do compile } */
+/* { dg-options "-fcondition-coverage" } */
+
+/* Check that a function with a condition inlined into a function without a
+   conditional works.  When inlining happens the condition -> expression
+   mapping must be carried over.  */
+
+extern int type;
+
+void fn (void);
+
+__attribute__((always_inline))
+inline void
+do_all_fn_doall_arg (void)
+{
+  if (type)
+    fn ();
+}
+
+void
+do_all_fn_LHASH_DOALL_ARG_arg2 (void)
+{
+  do_all_fn_doall_arg ();
+}