Daniel Dunbar | 2677261 | 2010-04-15 03:47:33 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -emit-llvm -triple x86_64 -O3 -o - %s | \ |
| 2 | // RUN: FileCheck -check-prefix=CHECK-OPT %s |
| 3 | |
| 4 | /****/ |
| 5 | |
| 6 | // PR6176 |
| 7 | |
| 8 | struct __attribute((packed)) s0 { |
| 9 | int f0 : 24; |
| 10 | }; |
| 11 | |
| 12 | struct s0 g0 = { 0xdeadbeef }; |
| 13 | |
| 14 | int f0_load(struct s0 *a0) { |
| 15 | int size_check[sizeof(struct s0) == 3 ? 1 : -1]; |
| 16 | return a0->f0; |
| 17 | } |
| 18 | int f0_store(struct s0 *a0) { |
| 19 | return (a0->f0 = 1); |
| 20 | } |
| 21 | int f0_reload(struct s0 *a0) { |
| 22 | return (a0->f0 += 1); |
| 23 | } |
| 24 | |
| 25 | // CHECK-OPT: define i64 @test_0() |
| 26 | // CHECK-OPT: ret i64 1 |
| 27 | // CHECK-OPT: } |
| 28 | unsigned long long test_0() { |
| 29 | struct s0 g0 = { 0xdeadbeef }; |
| 30 | unsigned long long res = 0; |
| 31 | res ^= g0.f0; |
| 32 | res ^= f0_load(&g0) ^ f0_store(&g0) ^ f0_reload(&g0); |
| 33 | res ^= g0.f0; |
| 34 | return res; |
| 35 | } |
| 36 | |
| 37 | /****/ |
| 38 | |
| 39 | // PR5591 |
| 40 | |
| 41 | #pragma pack(push) |
| 42 | #pragma pack(1) |
| 43 | struct __attribute((packed)) s1 { |
| 44 | signed f0 : 10; |
| 45 | signed f1 : 10; |
| 46 | }; |
| 47 | #pragma pack(pop) |
| 48 | |
| 49 | struct s1 g1 = { 0xdeadbeef, 0xdeadbeef }; |
| 50 | |
| 51 | int f1_load(struct s1 *a0) { |
| 52 | int size_check[sizeof(struct s1) == 3 ? 1 : -1]; |
| 53 | return a0->f1; |
| 54 | } |
| 55 | int f1_store(struct s1 *a0) { |
| 56 | return (a0->f1 = 1234); |
| 57 | } |
| 58 | int f1_reload(struct s1 *a0) { |
| 59 | return (a0->f1 += 1234); |
| 60 | } |
| 61 | |
| 62 | // CHECK-OPT: define i64 @test_1() |
| 63 | // CHECK-OPT: ret i64 210 |
| 64 | // CHECK-OPT: } |
| 65 | unsigned long long test_1() { |
| 66 | struct s1 g1 = { 0xdeadbeef, 0xdeadbeef }; |
| 67 | unsigned long long res = 0; |
| 68 | res ^= g1.f0 ^ g1.f1; |
| 69 | res ^= f1_load(&g1) ^ f1_store(&g1) ^ f1_reload(&g1); |
| 70 | res ^= g1.f0 ^ g1.f1; |
| 71 | return res; |
| 72 | } |
| 73 | |
| 74 | /****/ |
| 75 | |
| 76 | // PR5567 |
| 77 | |
| 78 | union u2 { |
| 79 | unsigned long long f0 : 3; |
| 80 | }; |
| 81 | |
| 82 | union u2 g2 = { 0xdeadbeef }; |
| 83 | |
| 84 | int f2_load(union u2 *a0) { |
| 85 | return a0->f0; |
| 86 | } |
| 87 | int f2_store(union u2 *a0) { |
| 88 | return (a0->f0 = 1234); |
| 89 | } |
| 90 | int f2_reload(union u2 *a0) { |
| 91 | return (a0->f0 += 1234); |
| 92 | } |
| 93 | |
| 94 | // CHECK-OPT: define i64 @test_2() |
| 95 | // CHECK-OPT: ret i64 2 |
| 96 | // CHECK-OPT: } |
| 97 | unsigned long long test_2() { |
| 98 | union u2 g2 = { 0xdeadbeef }; |
| 99 | unsigned long long res = 0; |
| 100 | res ^= g2.f0; |
| 101 | res ^= f2_load(&g2) ^ f2_store(&g2) ^ f2_reload(&g2); |
| 102 | res ^= g2.f0; |
| 103 | return res; |
| 104 | } |
| 105 | |
| 106 | /***/ |
| 107 | |
| 108 | // PR5039 |
| 109 | |
| 110 | struct s3 { |
| 111 | long long f0 : 32; |
| 112 | long long f1 : 32; |
| 113 | }; |
| 114 | |
| 115 | struct s3 g3 = { 0xdeadbeef, 0xdeadbeef }; |
| 116 | |
| 117 | int f3_load(struct s3 *a0) { |
| 118 | a0->f0 = 1; |
| 119 | return a0->f0; |
| 120 | } |
| 121 | int f3_store(struct s3 *a0) { |
| 122 | a0->f0 = 1; |
| 123 | return (a0->f0 = 1234); |
| 124 | } |
| 125 | int f3_reload(struct s3 *a0) { |
| 126 | a0->f0 = 1; |
| 127 | return (a0->f0 += 1234); |
| 128 | } |
| 129 | |
| 130 | // CHECK-OPT: define i64 @test_3() |
| 131 | // CHECK-OPT: ret i64 -559039940 |
| 132 | // CHECK-OPT: } |
| 133 | unsigned long long test_3() { |
| 134 | struct s3 g3 = { 0xdeadbeef, 0xdeadbeef }; |
| 135 | unsigned long long res = 0; |
| 136 | res ^= g3.f0 ^ g3.f1; |
| 137 | res ^= f3_load(&g3) ^ f3_store(&g3) ^ f3_reload(&g3); |
| 138 | res ^= g3.f0 ^ g3.f1; |
| 139 | return res; |
| 140 | } |
| 141 | |
| 142 | /***/ |
| 143 | |
| 144 | // This is a case where the bitfield access will straddle an alignment boundary |
| 145 | // of its underlying type. |
| 146 | |
| 147 | struct s4 { |
| 148 | unsigned f0 : 16; |
| 149 | unsigned f1 : 28 __attribute__ ((packed)); |
| 150 | }; |
| 151 | |
| 152 | struct s4 g4 = { 0xdeadbeef, 0xdeadbeef }; |
| 153 | |
| 154 | int f4_load(struct s4 *a0) { |
| 155 | return a0->f0 ^ a0->f1; |
| 156 | } |
| 157 | int f4_store(struct s4 *a0) { |
| 158 | return (a0->f0 = 1234) ^ (a0->f1 = 5678); |
| 159 | } |
| 160 | int f4_reload(struct s4 *a0) { |
| 161 | return (a0->f0 += 1234) ^ (a0->f1 += 5678); |
| 162 | } |
| 163 | |
| 164 | // CHECK-OPT: define i64 @test_4() |
| 165 | // CHECK-OPT: ret i64 4860 |
| 166 | // CHECK-OPT: } |
| 167 | unsigned long long test_4() { |
| 168 | struct s4 g4 = { 0xdeadbeef, 0xdeadbeef }; |
| 169 | unsigned long long res = 0; |
| 170 | res ^= g4.f0 ^ g4.f1; |
| 171 | res ^= f4_load(&g4) ^ f4_store(&g4) ^ f4_reload(&g4); |
| 172 | res ^= g4.f0 ^ g4.f1; |
| 173 | return res; |
| 174 | } |
| 175 | |
| 176 | /***/ |
| 177 | |
| 178 | |
| 179 | struct s5 { |
| 180 | unsigned f0 : 2; |
| 181 | _Bool f1 : 1; |
| 182 | _Bool f2 : 1; |
| 183 | }; |
| 184 | |
| 185 | struct s5 g5 = { 0xdeadbeef, 0xdeadbeef }; |
| 186 | |
| 187 | int f5_load(struct s5 *a0) { |
| 188 | return a0->f0 ^ a0->f1; |
| 189 | } |
| 190 | int f5_store(struct s5 *a0) { |
| 191 | return (a0->f0 = 0xF) ^ (a0->f1 = 0xF) ^ (a0->f2 = 0xF); |
| 192 | } |
| 193 | int f5_reload(struct s5 *a0) { |
| 194 | return (a0->f0 += 0xF) ^ (a0->f1 += 0xF) ^ (a0->f2 += 0xF); |
| 195 | } |
| 196 | |
| 197 | // CHECK-OPT: define i64 @test_5() |
| 198 | // CHECK-OPT: ret i64 2 |
| 199 | // CHECK-OPT: } |
| 200 | unsigned long long test_5() { |
| 201 | struct s5 g5 = { 0xdeadbeef, 0xdeadbeef, 0xdeadbeef }; |
| 202 | unsigned long long res = 0; |
| 203 | res ^= g5.f0 ^ g5.f1 ^ g5.f2; |
| 204 | res ^= f5_load(&g5) ^ f5_store(&g5) ^ f5_reload(&g5); |
| 205 | res ^= g5.f0 ^ g5.f1 ^ g5.f2; |
| 206 | return res; |
| 207 | } |