CS153/hw6/llprograms/sp20_hw3/sum_half_list.ll
jmug 0c04936ccf Updated hw6 to a newer version
Signed-off-by: jmug <u.g.a.mariano@gmail.com>
2025-01-24 21:23:08 -08:00

29 lines
942 B
LLVM

%struct.List = type { i64, %struct.List* }
@one_elt = global %struct.List { i64 1, %struct.List* null }
@two_elts = global %struct.List { i64 2, %struct.List* @one_elt }
@three_elts = global %struct.List { i64 4, %struct.List* @two_elts }
@four_elts = global %struct.List { i64 8, %struct.List* @three_elts }
@test = global %struct.List { i64 16, %struct.List* @four_elts }
define i64 @sum_half_list(%struct.List* %l) {
%1 = icmp eq %struct.List* %l, null
br i1 %1, label %then, label %else
then:
ret i64 0
else:
%2 = getelementptr %struct.List, %struct.List* %l, i32 0, i32 0
%3 = load i64, i64* %2
%4 = ashr i64 %3, 1
%5 = getelementptr %struct.List, %struct.List* %l, i32 0, i32 1
%6 = load %struct.List*, %struct.List** %5
%7 = call i64 @sum_half_list(%struct.List* %6)
%8 = add i64 %4, %7
ret i64 %8
}
define i64 @main(i64 %argc, i8** %argv) {
%1 = call i64 @sum_half_list(%struct.List* @test)
ret i64 %1
}