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June 10, 2019 10:31
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random llvm-ir files
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declare i32 @atoi(i8* nocapture) | |
declare i32 @printf(i8* noalias nocapture, ...) nounwind | |
@.result_fmt = private unnamed_addr constant [18 x i8] c"pascal(%d,%d)=%d\0A\00" | |
define i32 @pascal(i32 %n, i32 %k) { | |
%n_eq_0 = icmp eq i32 %n, 0 | |
br i1 %n_eq_0, label %base_case_1, label %n_is_not_base | |
n_is_not_base: | |
%k_eq_0 = icmp eq i32 %k, 0 | |
br i1 %k_eq_0, label %base_case_1, label %k_is_not_base | |
k_is_not_base: | |
%k_eq_n = icmp eq i32 %k, %n | |
br i1 %k_eq_n, label %base_case_1, label %k_n_is_not_base | |
k_n_is_not_base: | |
%k_gt_n = icmp ugt i32 %k, %n | |
br i1 %k_gt_n, label %base_case_0, label %recurse | |
recurse: | |
%n_dec = sub i32 %n, 1 | |
%k_dec = sub i32 %k, 1 | |
%rec_1 = call i32 @pascal(i32 %n_dec, i32 %k) | |
%rec_2 = call i32 @pascal(i32 %n_dec, i32 %k_dec) | |
%result = add i32 %rec_1, %rec_2 | |
ret i32 %result | |
base_case_1: | |
ret i32 1 | |
base_case_0: | |
ret i32 0 | |
} | |
; Definition of main function | |
define i32 @main(i32 %argc, i8** %argv) { ; i32()* | |
%argv_1 = getelementptr i8*, i8** %argv, i32 1 | |
%argv_2 = getelementptr i8*, i8** %argv, i32 2 | |
%n_ptr = load i8*, i8** %argv_1 | |
%k_ptr = load i8*, i8** %argv_2 | |
%n = call i32 @atoi(i8* %n_ptr) | |
%k = call i32 @atoi(i8* %k_ptr) | |
%result = call i32 @pascal(i32 %n, i32 %k) | |
%cast210 = getelementptr [18 x i8], [18 x i8]* @.result_fmt, i32 0, i32 0 | |
call i32 (i8*, ...) @printf(i8* %cast210, i32 %n, i32 %k, i32 %result) | |
ret i32 0 | |
} |
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