1; This test makes sure that these instructions are properly eliminated.
2;
3; RUN: opt < %s -instcombine -S | not grep load
4
5@X = constant i32 42		; <i32*> [#uses=2]
6@X2 = constant i32 47		; <i32*> [#uses=1]
7@Y = constant [2 x { i32, float }] [ { i32, float } { i32 12, float 1.000000e+00 }, { i32, float } { i32 37, float 0x3FF3B2FEC0000000 } ]		; <[2 x { i32, float }]*> [#uses=2]
8@Z = constant [2 x { i32, float }] zeroinitializer		; <[2 x { i32, float }]*> [#uses=1]
9
10@GLOBAL = internal constant [4 x i32] zeroinitializer
11
12
13define i32 @test1() {
14	%B = load i32* @X		; <i32> [#uses=1]
15	ret i32 %B
16}
17
18define float @test2() {
19	%A = getelementptr [2 x { i32, float }]* @Y, i64 0, i64 1, i32 1		; <float*> [#uses=1]
20	%B = load float* %A		; <float> [#uses=1]
21	ret float %B
22}
23
24define i32 @test3() {
25	%A = getelementptr [2 x { i32, float }]* @Y, i64 0, i64 0, i32 0		; <i32*> [#uses=1]
26	%B = load i32* %A		; <i32> [#uses=1]
27	ret i32 %B
28}
29
30define i32 @test4() {
31	%A = getelementptr [2 x { i32, float }]* @Z, i64 0, i64 1, i32 0		; <i32*> [#uses=1]
32	%B = load i32* %A		; <i32> [#uses=1]
33	ret i32 %B
34}
35
36define i32 @test5(i1 %C) {
37	%Y = select i1 %C, i32* @X, i32* @X2		; <i32*> [#uses=1]
38	%Z = load i32* %Y		; <i32> [#uses=1]
39	ret i32 %Z
40}
41
42define i32 @test7(i32 %X) {
43	%V = getelementptr i32* null, i32 %X		; <i32*> [#uses=1]
44	%R = load i32* %V		; <i32> [#uses=1]
45	ret i32 %R
46}
47
48define i32 @test8(i32* %P) {
49	store i32 1, i32* %P
50	%X = load i32* %P		; <i32> [#uses=1]
51	ret i32 %X
52}
53
54define i32 @test9(i32* %P) {
55	%X = load i32* %P		; <i32> [#uses=1]
56	%Y = load i32* %P		; <i32> [#uses=1]
57	%Z = sub i32 %X, %Y		; <i32> [#uses=1]
58	ret i32 %Z
59}
60
61define i32 @test10(i1 %C.upgrd.1, i32* %P, i32* %Q) {
62	br i1 %C.upgrd.1, label %T, label %F
63T:		; preds = %0
64	store i32 1, i32* %Q
65	store i32 0, i32* %P
66	br label %C
67F:		; preds = %0
68	store i32 0, i32* %P
69	br label %C
70C:		; preds = %F, %T
71	%V = load i32* %P		; <i32> [#uses=1]
72	ret i32 %V
73}
74
75define double @test11(double* %p) {
76  %t0 = getelementptr double* %p, i32 1
77  store double 2.0, double* %t0
78  %t1 = getelementptr double* %p, i32 1
79  %x = load double* %t1
80  ret double %x
81}
82
83define i32 @test12(i32* %P) {
84        %A = alloca i32
85        store i32 123, i32* %A
86        ; Cast the result of the load not the source
87        %Q = bitcast i32* %A to i32*
88        %V = load i32* %Q
89        ret i32 %V
90}
91
92define <16 x i8> @test13(<2 x i64> %x) {
93entry:
94	%tmp = load <16 x i8> * bitcast ([4 x i32]* @GLOBAL to <16 x i8>*)
95	ret <16 x i8> %tmp
96}
97
98
99