SDK v14.2.0

New targets

• #324 - Port to the Watara Supervision (mos-supervision-clang) - @asiekierka

New features

• llvm-mos/llvm-mos#355 - 65816 assembler improvements - @asiekierka
  • Add support for forcing "long" addressing mode with lda mos24(addr).
  • Finish support for $ml, $mh, $xl, $xh mapping symbols. These mark the state of M and X flags required to disassemble a given opcode, allowing tools like llvm-objdump to distinguish between lda #$ea and lda #$eaea. This information is gathered from the instruction itself - .a8/.a16/.i8/.i16 or whatever we end up implementing to set the default instruction encoding can then simply affect which instruction is selected in the parsing process. Tests have been provided to match other architectures with mapping symbols.
  • Add missing BIT #$eaea opcode to 65816.

Optimizations

• llvm-mos/llvm-mos#452 - Correct register allocation cost values for 65CE02 - @asiekierka
• llvm-mos/llvm-mos#453 - Avoid commuting operands when doing so would lead to fewer trivial copies - @asiekierka