mirror of
https://github.com/RPCSX/llvm.git
synced 2024-12-13 06:38:44 +00:00
98af669fb9
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@413 91177308-0d34-0410-b5e6-96231b3b80d8
37 lines
726 B
LLVM
37 lines
726 B
LLVM
implementation
|
|
|
|
declare int "atoi"(sbyte *)
|
|
|
|
ulong "fib"(ulong %n)
|
|
begin
|
|
setlt ulong %n, 2 ; {bool}:0
|
|
br bool %0, label %BaseCase, label %RecurseCase
|
|
|
|
BaseCase:
|
|
ret ulong 1
|
|
|
|
RecurseCase:
|
|
%n2 = sub ulong %n, 2
|
|
%n1 = sub ulong %n, 1
|
|
%f2 = call ulong(ulong) %fib(ulong %n2)
|
|
%f1 = call ulong(ulong) %fib(ulong %n1)
|
|
%result = add ulong %f2, %f1
|
|
ret ulong %result
|
|
end
|
|
|
|
ulong "main"(int %argc, sbyte ** %argv)
|
|
begin
|
|
seteq int %argc, 2 ; {bool}:0
|
|
br bool %0, label %HasArg, label %Continue
|
|
HasArg:
|
|
; %n1 = atoi(argv[1])
|
|
%n1 = add int 1, 1
|
|
br label %Continue
|
|
|
|
Continue:
|
|
%n = phi int [%n1, %HasArg], [1, %0]
|
|
%N = cast int %n to ulong
|
|
%F = call ulong(ulong) %fib(ulong %N)
|
|
ret ulong %F
|
|
end
|