Merge pull request #1271 from patrick-rivos/llvm-release-ci

Generate seperate release names for LLVM and GCC toolchain release artifacts

Author: kito-cheng

.github/workflows/nightly-release.yaml

@@ -99,7 +99,7 @@ jobs:
             *)
               MODE="elf";;
           esac
-          echo ::set-output name=TOOLCHAIN_NAME::riscv$BITS-$MODE-${{ matrix.os }}-nightly
+          echo ::set-output name=TOOLCHAIN_NAME::riscv$BITS-$MODE-${{ matrix.os }}-${{ matrix.compiler }}-nightly
 
       - uses: actions/upload-artifact@v2
         with: