; ModuleID = 'easy.c' source_filename = "assign_test.sy" ; 注释: target的开始 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" target triple = "x86_64-unknown-linux-gnu" ; 注释: target的结束 @.str = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1 define i32 @add(i32 %a, i32 %b) { %1 = add nsw i32 %a, %b %2 = sub i32 %1, 1 ret i32 %2 } define i32 @main() { %1 = alloca i32, align 4 ;a %2 = alloca i32, align 4 ;b %3 = alloca i32, align 4 ;c store i32 3, i32* %1, align 4 store i32 2, i32* %2, align 4 store i32 5, i32* %3, align 4 %4 = load i32, i32* %1, align 4 %5 = load i32, i32* %2, align 4 %6 = load i32, i32* %3, align 4 %7 = call i32 @add(i32 %4, i32 %5) ;add(a,b) %8 = add nsw i32 %6, %7 ret i32 %8 } attributes #0 = { noinline nounwind optnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } !llvm.module.flags = !{!0} !llvm.ident = !{!1} !0 = !{i32 1, !"wchar_size", i32 4} !1 = !{!"clang version 10.0.1 "}