Fix tests/codegen/riscv-abi/call-llvm-intrinsics.rs
Fix tests/codegen/riscv-abi/riscv64-lp64d-abi.rs
Fix tests/codegen/riscv-abi/riscv64-lp64f-lp64d-abi.rs
On riscv64gc ignore tests/ui/debuginfo/debuginfo-emit-llvm-ir-and-split-debuginfo.rs
Make tests/codegen/riscv-abi/riscv64-lp64d-abi.rs no_core
Make tests/codegen/riscv-abi/riscv64-lp64f-lp64d-abi.rs no_core
Set -O for tests/codegen/riscv-abi/riscv64-lp64d-abi.rs
Set -O for tests/codegen/riscv-abi/riscv64-lp64f-lp64d-abi.rs