[RCCL][NAVI3X] Fix UT hang

[rocm-systems] ROCm/rocm-systems#2984 (commit 21cc542)

Author: Kapil-Shyam-Pawar

CMakeLists.txt

@@ -164,6 +164,11 @@ if(ROCM_PATH)
               ${ROCM_PATH}/llvm)
 endif()
 
+set(CMAKE_CXX_FLAGS_RELEASE "-O3" CACHE STRING "Release flags" FORCE)
+set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O3 -g" CACHE STRING "RelWithDebInfo flags" FORCE)
+set(CMAKE_C_FLAGS_RELEASE "-O3" CACHE STRING "Release flags" FORCE)
+set(CMAKE_C_FLAGS_RELWITHDEBINFO "-O3 -g" CACHE STRING "RelWithDebInfo flags" FORCE)
+
 # Check for required dependencies
 #==================================================================================================
 ## Check for Threads