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-rw-r--r--tests/codegen/s390x-simd.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/codegen/s390x-simd.rs b/tests/codegen/s390x-simd.rs
index 23181e6a103..ac39357519e 100644
--- a/tests/codegen/s390x-simd.rs
+++ b/tests/codegen/s390x-simd.rs
@@ -1,7 +1,7 @@
 //! test that s390x vector types are passed using `PassMode::Direct`
 //! see also https://github.com/rust-lang/rust/issues/135744
 //@ add-core-stubs
-//@ compile-flags: --target s390x-unknown-linux-gnu -O
+//@ compile-flags: --target s390x-unknown-linux-gnu -Copt-level=3
 //@ needs-llvm-components: systemz
 
 #![crate_type = "rlib"]