Release SDK v0.7.0 · llvm-mos/llvm-mos-sdk

Breaking Changes

llvm-mos/llvm-mos#209: LLVM-MOS specific optimization passes are now generally disabled at -O0, just like regular optimization passes. These passes ignored optimization level for simplicity sake, but now they don't. This means that functions compiled at -O0 will use soft stacks and won't allocate zero page (other than the regular use of imaginary registers).
The hardware register definitions from cc65 were ported for all supported platforms. Conflicting functionality in the SDK was replaced with its cc65 equivalent.

llvm-mos/llvm-mos#208: The CLD instruction at the beginning of a C interrupt handler was placed after the stack was adjusted. Since adjusting the stack requires an addition, the result of the addition may have been incorrect.
llvm-mos/llvm-mos#206: There were two cases where the compiler would produce incorrect assembly. This only affected assembly output, since clang goes directly from C to machine code. If assembled later, the first case would fail, and the second would assemble to a different opcode than was emitted.
DODO API functions no longer prevent the allocation of ZP. Linker script support was also fixed.

llvm-mos/llvm-mos#210: Zero page locations can now be allocated to functions that appear to recurse in the call graph, but are known for other reasons not to ever recurse. For example, for main in C++ to recurse is undefined behavior, so it can now always allocate ZP.