I'm porting LLVM/Clang to the 6502. Notoriously difficult project, attempted dozens of times by as many folks. https://github.com/mysterymath/clang6502 https:/

I'm porting LLVM/Clang to the 6502. Notoriously difficult project, attempted dozens of times by as many folks. https://github.com/mysterymath/clang6502 https://github.com/mysterymath/clang6502 My take generates pretty darn good assembly for the cases it handles, but it's absurdly incomplete. Still, a huge amount of risk factors have already been addressed, and there's only a few big known unknowns left. Example input: void print_int(char x) { if (x < 10) { x += '0'; asm volatile ("JSR\t$FFD2" : "+a"(x)); return; } print_int(x / 10); print_int(x % 10); } Example output: .code .global print__int ; -- Begin function print_int print__int: ; @print_int ; %bb.0: ; %entry CMP #10 BMI LBB0__2 ; %bb.1: ; %if.end.preheader LDX #10 PHA ; 1-byte Folded Spill JSR ____udivqi3 JSR print__int PLA ; 1-byte Folded Reload LDX #10 JSR ____umodqi3 LBB0__2: ; %if.then CLC ADC #48 ;APP JSR $FFD2 ;NO_APP RTS ; -- End function .global ____udivqi3 .global ____umodqi3