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cs420/examples/ir2/fibonacci.ir
2025-04-11 13:20:10 +09:00

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var i32 @nonce = 1
fun i32 @fibonacci (i32) {
init:
bid: b0
allocations:
%l0:i32:n
block b0:
%b0:p0:i32:n
%b0:i0:unit = nop
%b0:i1:unit = nop
%b0:i2:u1 = cmp lt %b0:p0:i32 2:i32
br %b0:i2:u1, b1(), b2()
block b1:
%b1:i0:unit = nop
ret %b0:p0:i32
block b2:
%b2:i0:unit = nop
%b2:i1:i32 = sub %b0:p0:i32 2:i32
%b2:i2:i32 = call @fibonacci:[ret:i32 params:(i32)]*(%b2:i1:i32)
%b2:i3:unit = nop
%b2:i4:i32 = sub %b0:p0:i32 1:i32
%b2:i5:i32 = call @fibonacci:[ret:i32 params:(i32)]*(%b2:i4:i32)
%b2:i6:i32 = add %b2:i2:i32 %b2:i5:i32
ret %b2:i6:i32
}
fun i32 @main () {
init:
bid: b0
allocations:
%l0:i32:number
block b0:
%b0:i0:i32 = load @nonce:i32*
%b0:i1:i32 = mod %b0:i0:i32 20:i32
%b0:i2:unit = nop
%b0:i3:unit = nop
%b0:i4:i32 = call @fibonacci:[ret:i32 params:(i32)]*(%b0:i1:i32)
ret %b0:i4:i32
}