[AMDGPU] Handle empty-except-for-DI regions in PreRARematerialize#524

ronlieb merged 1 commit intoamd-mainlineROCm/llvm-project:amd-mainlinefrom

amd/dev/slinder1/amd-mainline/SWDEV-563725_rematerialize_debug_infoROCm/llvm-project:amd/dev/slinder1/amd-mainline/SWDEV-563725_rematerialize_debug_infoCopy head branch name to clipboard