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https://github.com/c64scene-ar/llvm-6502.git
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009505452b
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2 91177308-0d34-0410-b5e6-96231b3b80d8
44 lines
989 B
LLVM
44 lines
989 B
LLVM
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;; TODO:
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;; [ ] Get rid out outside class & begin stuff
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;; [ ] Allow global const pool to be expanded continually
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;; [ ] Support global variable declaration & definition
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;; [ ] Support function definition: %fib = prototype ulong (ulong)
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;; [x] Support Type definition
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implementation
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ulong "fib"(ulong %n)
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begin
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setlt ulong %n, 2 ; {bool}:0
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br bool %0, label %BaseCase, label %RecurseCase
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BaseCase:
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ret ulong 1
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RecurseCase:
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%n2 = sub ulong %n, 2
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%n1 = sub ulong %n, 1
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%f2 = call ulong(ulong) %fib(ulong %n2)
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%f1 = call ulong(ulong) %fib(ulong %n1)
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%result = add ulong %f2, %f1
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ret ulong %result
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end
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ulong "main"(int %argc, sbyte ** %argv)
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;; %n2 = int 1
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begin
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seteq int %argc, 2 ; {bool}:0
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br bool %0, label %HasArg, label %Continue
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HasArg:
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; %n1 = atoi(argv[1])
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;;; %n1 = add int 1, 1
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br label %Continue
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Continue:
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;;; %n = phi int %n1, %n2
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%N = add ulong 1, 1 ;; TODO: CAST
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%F = call ulong(ulong) %fib(ulong %N)
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ret ulong %F
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end
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