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Dan Gohmanf17a25c2007-07-18 16:29:46 +00001; This test makes sure that these instructions are properly eliminated.
Chris Lattner53f85a72007-11-25 21:27:53 +00002; PR1822
Dan Gohmanf17a25c2007-07-18 16:29:46 +00003
Chris Lattner53f85a72007-11-25 21:27:53 +00004; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine | llvm-dis | not grep select
Dan Gohmanf17a25c2007-07-18 16:29:46 +00005
6implementation
7
8int %test1(int %A, int %B) {
9 %C = select bool false, int %A, int %B
10 ret int %C
11}
12
13int %test2(int %A, int %B) {
14 %C = select bool true, int %A, int %B
15 ret int %C
16}
17
18int %test3(bool %C, int %I) {
19 %V = select bool %C, int %I, int %I ; V = I
20 ret int %V
21}
22
23bool %test4(bool %C) {
24 %V = select bool %C, bool true, bool false ; V = C
25 ret bool %V
26}
27
28bool %test5(bool %C) {
29 %V = select bool %C, bool false, bool true ; V = !C
30 ret bool %V
31}
32
33int %test6(bool %C) {
34 %V = select bool %C, int 1, int 0 ; V = cast C to int
35 ret int %V
36}
37
38bool %test7(bool %C, bool %X) {
39 %R = select bool %C, bool true, bool %X ; R = or C, X
40 ret bool %R
41}
42
43bool %test8(bool %C, bool %X) {
44 %R = select bool %C, bool %X, bool false ; R = and C, X
45 ret bool %R
46}
47
48bool %test9(bool %C, bool %X) {
49 %R = select bool %C, bool false, bool %X ; R = and !C, X
50 ret bool %R
51}
52
53bool %test10(bool %C, bool %X) {
54 %R = select bool %C, bool %X, bool true ; R = or !C, X
55 ret bool %R
56}
57
58int %test11(int %a) {
59 %C = seteq int %a, 0
60 %R = select bool %C, int 0, int 1
61 ret int %R
62}
63
64int %test12(bool %cond, int %a) {
65 %b = or int %a, 1
66 %c = select bool %cond, int %b, int %a
67 ret int %c
68}
69
70int %test12a(bool %cond, int %a) {
71 %b = shr int %a, ubyte 1
72 %c = select bool %cond, int %b, int %a
73 ret int %c
74}
75
76int %test12b(bool %cond, int %a) {
77 %b = shr int %a, ubyte 1
78 %c = select bool %cond, int %a, int %b
79 ret int %c
80}
81
82int %test13(int %a, int %b) {
83 %C = seteq int %a, %b
84 %V = select bool %C, int %a, int %b
85 ret int %V
86}
87
88int %test13a(int %a, int %b) {
89 %C = setne int %a, %b
90 %V = select bool %C, int %a, int %b
91 ret int %V
92}
93
94int %test13b(int %a, int %b) {
95 %C = seteq int %a, %b
96 %V = select bool %C, int %b, int %a
97 ret int %V
98}
99
100bool %test14a(bool %C, int %X) {
101 %V = select bool %C, int %X, int 0
102 %R = setlt int %V, 1 ; (X < 1) | !C
103 ret bool %R
104}
105
106bool %test14b(bool %C, int %X) {
107 %V = select bool %C, int 0, int %X
108 %R = setlt int %V, 1 ; (X < 1) | C
109 ret bool %R
110}
111
112int %test15a(int %X) { ;; Code sequence for (X & 16) ? 16 : 0
113 %t1 = and int %X, 16
114 %t2 = seteq int %t1, 0
115 %t3 = select bool %t2, int 0, int 16 ;; X & 16
116 ret int %t3
117}
118
119int %test15b(int %X) { ;; Code sequence for (X & 32) ? 0 : 24
120 %t1 = and int %X, 32
121 %t2 = seteq int %t1, 0
122 %t3 = select bool %t2, int 32, int 0 ;; ~X & 32
123 ret int %t3
124}
125
126int %test15c(int %X) { ;; Alternate code sequence for (X & 16) ? 16 : 0
127 %t1 = and int %X, 16
128 %t2 = seteq int %t1, 16
129 %t3 = select bool %t2, int 16, int 0 ;; X & 16
130 ret int %t3
131}
132
133int %test15d(int %X) { ;; Alternate code sequence for (X & 16) ? 16 : 0
134 %t1 = and int %X, 16
135 %t2 = setne int %t1, 0
136 %t3 = select bool %t2, int 16, int 0 ;; X & 16
137 ret int %t3
138}
139
140int %test16(bool %C, int* %P) {
141 %P2 = select bool %C, int* %P, int* null
142 %V = load int* %P2
143 ret int %V
144}
145
146bool %test17(int* %X, bool %C) {
147 %R = select bool %C, int* %X, int* null
148 %RV = seteq int* %R, null
149 ret bool %RV
150}
151
152int %test18(int %X, int %Y, bool %C) {
153 %R = select bool %C, int %X, int 0
154 %V = div int %Y, %R ; div Y,X
155 ret int %V
156}
157
158int %test19(uint %x) {
159 %tmp = setgt uint %x, 2147483647
160 %retval = select bool %tmp, int -1, int 0
161 ret int %retval
162}
163
164int %test20(int %x) {
165 %tmp = setlt int %x, 0
166 %retval = select bool %tmp, int -1, int 0
167 ret int %retval
168}
169
170long %test21(int %x) {
171 %tmp = setlt int %x, 0
172 %retval = select bool %tmp, long -1, long 0
173 ret long %retval
174}
175
176short %test22(int %x) {
177 %tmp = setlt int %x, 0
178 %retval = select bool %tmp, short -1, short 0
179 ret short %retval
180}
181
Chris Lattner53f85a72007-11-25 21:27:53 +0000182bool %test23(bool %a, bool %b) {
183 %c = select bool %a, bool %b, bool %a
184 ret bool %c
185}
186
187bool %test24(bool %a, bool %b) {
188 %c = select bool %a, bool %a, bool %b
189 ret bool %c
190}