Set -O for tests/codegen/riscv-abi/riscv64-lp64f-lp64d-abi.rs

Co-authored-by: erikdesjardins <erikdesjardins@users.noreply.github.com>

Author: Hoverbear

tests/codegen/riscv-abi/riscv64-lp64f-lp64d-abi.rs

@@ -1,5 +1,5 @@
-//@ compile-flags: -C no-prepopulate-passes --target riscv64gc-unknown-linux-gnu
-//@ needs-llvm-components: riscv64
+//@ compile-flags: -O -C no-prepopulate-passes --target riscv64gc-unknown-linux-gnu
+//@ needs-llvm-components: riscv
 
 #![feature(no_core, lang_items)]
 #![crate_type = "lib"]