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; RUN: opt < %s -basicaa -inline -instcombine -reassociate -dse -disable-output
; PR12245
@a = common global i32 0, align 4
@d = common global i32 0, align 4
define i32 @fn2() nounwind uwtable ssp {
entry:
%0 = load i32* @a, align 4, !tbaa !0
%dec = add nsw i32 %0, -1
store i32 %dec, i32* @a, align 4, !tbaa !0
%1 = load i32* @d, align 4, !tbaa !0
%sub = sub nsw i32 %dec, %1
store i32 %sub, i32* @d, align 4, !tbaa !0
%2 = load i32* @a, align 4, !tbaa !0
%dec1 = add nsw i32 %2, -1
store i32 %dec1, i32* @a, align 4, !tbaa !0
%3 = load i32* @d, align 4, !tbaa !0
%sub2 = sub nsw i32 %dec1, %3
store i32 %sub2, i32* @d, align 4, !tbaa !0
%4 = load i32* @a, align 4, !tbaa !0
%dec3 = add nsw i32 %4, -1
store i32 %dec3, i32* @a, align 4, !tbaa !0
%5 = load i32* @d, align 4, !tbaa !0
%sub4 = sub nsw i32 %dec3, %5
store i32 %sub4, i32* @d, align 4, !tbaa !0
%6 = load i32* @a, align 4, !tbaa !0
%dec5 = add nsw i32 %6, -1
store i32 %dec5, i32* @a, align 4, !tbaa !0
%7 = load i32* @d, align 4, !tbaa !0
%sub6 = sub nsw i32 %dec5, %7
store i32 %sub6, i32* @d, align 4, !tbaa !0
%8 = load i32* @a, align 4, !tbaa !0
%dec7 = add nsw i32 %8, -1
store i32 %dec7, i32* @a, align 4, !tbaa !0
%9 = load i32* @d, align 4, !tbaa !0
%sub8 = sub nsw i32 %dec7, %9
store i32 %sub8, i32* @d, align 4, !tbaa !0
ret i32 0
}
define i32 @fn1() nounwind uwtable ssp {
entry:
%call = call i32 @fn2()
ret i32 %call
}
!0 = metadata !{metadata !"int", metadata !1}
!1 = metadata !{metadata !"omnipotent char", metadata !2}
!2 = metadata !{metadata !"Simple C/C++ TBAA"}
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