1 ; RUN: llvm-as < %s | opt -reassociate -dce -gcse | llvm-dis | grep add | wc -l | grep 8
2 ; This test corresponds to GCC PR16157. Reassociate should arrange for 4 additions to be
3 ; left in each function.
5 ; We currently don't implement this. This would require looking globally to
6 ; find out which expressions are available, which we currently do not do.
10 %a4 = external global int
11 %a3 = external global int
12 %a2 = external global int
13 %a1 = external global int
14 %a0 = external global int
15 %b4 = external global int
16 %b3 = external global int
17 %b2 = external global int
18 %b1 = external global int
20 implementation ; Functions:
23 %tmp.0 = load int* %a4 ; <int> [#uses=1]
24 %tmp.1 = load int* %a3 ; <int> [#uses=2]
25 %tmp.2 = add int %tmp.0, %tmp.1 ; <int> [#uses=1]
26 %tmp.3 = load int* %a2 ; <int> [#uses=3]
27 %tmp.4 = add int %tmp.2, %tmp.3 ; <int> [#uses=1]
28 %tmp.5 = load int* %a1 ; <int> [#uses=4]
29 %tmp.6 = add int %tmp.4, %tmp.5 ; <int> [#uses=1]
30 %tmp.7 = load int* %a0 ; <int> [#uses=4]
31 %tmp.8 = add int %tmp.6, %tmp.7 ; <int> [#uses=1]
32 store int %tmp.8, int* %a4
33 %tmp.11 = add int %tmp.1, %tmp.3 ; <int> [#uses=1]
34 %tmp.13 = add int %tmp.11, %tmp.5 ; <int> [#uses=1]
35 %tmp.15 = add int %tmp.13, %tmp.7 ; <int> [#uses=1]
36 store int %tmp.15, int* %a3
37 %tmp.18 = add int %tmp.3, %tmp.5 ; <int> [#uses=1]
38 %tmp.20 = add int %tmp.18, %tmp.7 ; <int> [#uses=1]
39 store int %tmp.20, int* %a2
40 %tmp.23 = add int %tmp.5, %tmp.7 ; <int> [#uses=1]
41 store int %tmp.23, int* %a1
46 %tmp.0 = load int* %a4 ; <int> [#uses=1]
47 %tmp.1 = load int* %a3 ; <int> [#uses=2]
48 %tmp.2 = add int %tmp.0, %tmp.1 ; <int> [#uses=1]
49 %tmp.3 = load int* %a2 ; <int> [#uses=3]
50 %tmp.4 = add int %tmp.2, %tmp.3 ; <int> [#uses=1]
51 %tmp.5 = load int* %a1 ; <int> [#uses=4]
52 %tmp.6 = add int %tmp.4, %tmp.5 ; <int> [#uses=1]
53 %tmp.7 = load int* %a0 ; <int> [#uses=4]
54 %tmp.8 = add int %tmp.6, %tmp.7 ; <int> [#uses=1]
55 store int %tmp.8, int* %b4
56 %tmp.11 = add int %tmp.1, %tmp.3 ; <int> [#uses=1]
57 %tmp.13 = add int %tmp.11, %tmp.5 ; <int> [#uses=1]
58 %tmp.15 = add int %tmp.13, %tmp.7 ; <int> [#uses=1]
59 store int %tmp.15, int* %b3
60 %tmp.18 = add int %tmp.3, %tmp.5 ; <int> [#uses=1]
61 %tmp.20 = add int %tmp.18, %tmp.7 ; <int> [#uses=1]
62 store int %tmp.20, int* %b2
63 %tmp.23 = add int %tmp.5, %tmp.7 ; <int> [#uses=1]
64 store int %tmp.23, int* %b1