Auto merge of #118036 - DianQK:thinlto-tests, r=tmiasko

Add thinlto support to codegen, assembly and coverage tests

Using `--emit=llvm-ir` with thinlto usually result in multiple IR files.
Resolve test case failure issue reported in #113923.

1 files changed, 7 insertions, 0 deletions

diff --git a/tests/codegen/thin-lto.rs b/tests/codegen/thin-lto.rs
new file mode 100644
index 00000000000..7991cad7a0c
--- /dev/null
+++ b/tests/codegen/thin-lto.rs
@@ -0,0 +1,7 @@
+// compile-flags: -O -C lto=thin -C prefer-dynamic=no
+// only-x86_64-unknown-linux-gnu
+
+// CHECK: main
+
+pub fn main() {
+}