Created
May 4, 2018 05:44
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declare i32 @putchar(i32) | |
@xt_A = private constant i8* blockaddress(@main, %i_A) | |
@xt_B = private constant i8* blockaddress(@main, %i_B) | |
@xt_exit = private constant i8* blockaddress(@main, %i_exit) | |
@code = private constant [5 x i8**] [ | |
i8** @xt_A, | |
i8** @xt_B, | |
i8** @xt_A, | |
i8** @xt_B, | |
i8** @xt_exit | |
] | |
define i32 @main() { | |
entry: | |
%start = getelementptr [5 x i8**], [5 x i8**]* @code, i32 0 , i32 0 | |
br label %top | |
top: | |
%ip = phi i8*** [%start, %entry], [%new_ip, %next] | |
%w = load i8**, i8*** %ip | |
%addr = load i8*, i8** %w | |
%new_ip = getelementptr i8**, i8*** %ip, i32 1 | |
indirectbr i8* %addr, [label %i_A, label %i_B, label %i_exit] | |
next: | |
br label %top | |
i_A: | |
call i32 @putchar(i32 65) | |
br label %next | |
i_B: | |
call i32 @putchar(i32 66) | |
br label %next | |
i_exit: | |
call i32 @putchar(i32 10) | |
ret i32 0 | |
} |
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