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我正在制作一个基本的编译器,并希望将源代码行放在为便于调试而生成的 llvm 代码附近的某个位置。例如:

proc f(a:Int, b:Int):Int {
    return a + b;
}

start {
    print f(1,2);
    return 0;
}

应该以某种方式用源注释,如下所示:

@numFmt = internal constant [4 x i8] c"%d\0A\00"

declare i32 @printf(i8*, ...) nounwind

define i32 @main() {
entry:
  %print.0 = call i32 @f(i32 1, i32 2)     ; print f(1,2) maybe using a comment
  %tmp.3 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([4 x i8]* @numFmt, i32 0, i32 0), i32 %print.0)
"return 0    - or perhaps using a basic block":
  ret i32 0
}

define i32 @f(i32 %a, i32 %b) {
entry:
  "return a + b" = <or the result of some dummy operation that doesn't get stripped away"
  %return.0 = add i32 %a, %b
  ret i32 %return.0
}

有什么解决方案/方法吗?(顺便说一句,我正在使用 llvm-fs 绑定,但我只想要一种适用于 IR 的方法)

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0 回答 0