It's not an entirely big surprise that there is already compiler support baked for the Cortex-A32 considering this is just an ultra power efficient cut-down version of the ARMv8 that runs in 32-bit mode. The ARMv8 64-bit support has been maturing in both GCC and LLVM/Clang for quite some time already. However, it's nice to see the quick turnaround time by ARM on getting the support upstream.
This commit that landed in GCC trunk this morning by ARM's Kyrylo Tkachov adds -mcpu=cortex-a32 to GCC. This addition will be found in GCC 6.