1 // setting strict FP behaviour in the run line below tests that the compiler 2 // does the right thing for global compound literals (compoundliteral test) 3 // RUN: %clang_cc1 -triple i386-pc-linux-gnu -ffreestanding -Wno-pointer-to-int-cast -Wno-int-conversion -ffp-exception-behavior=strict -emit-llvm -o - %s | FileCheck %s 4 5 #include <stdint.h> 6 7 // Brace-enclosed string array initializers 8 char a[] = { "asdf" }; 9 // CHECK: @a ={{.*}} global [5 x i8] c"asdf\00" 10 11 char a2[2][5] = { "asdf" }; 12 // CHECK: @a2 ={{.*}} global [2 x [5 x i8]] {{\[}}[5 x i8] c"asdf\00", [5 x i8] zeroinitializer] 13 14 // Double-implicit-conversions of array/functions (not legal C, but 15 // clang accepts it for gcc compat). 16 intptr_t b = a; 17 int c(void); 18 void *d = c; 19 intptr_t e = c; 20 21 int f, *g = __extension__ &f, *h = (1 != 1) ? &f : &f; 22 23 union s2 { 24 struct { 25 struct { } *f0; 26 } f0; 27 }; 28 29 int g0 = (int)(&(((union s2 *) 0)->f0.f0) - 0); 30 31 // CHECK: @g1x ={{.*}} global { double, double } { double 1.000000e+00{{[0]*}}, double 0.000000e+00{{[0]*}} } 32 _Complex double g1x = 1.0f; 33 // CHECK: @g1y ={{.*}} global { double, double } { double 0.000000e+00{{[0]*}}, double 1.000000e+00{{[0]*}} } 34 _Complex double g1y = 1.0fi; 35 // CHECK: @g1 ={{.*}} global { i8, i8 } { i8 1, i8 10 } 36 _Complex char g1 = (char) 1 + (char) 10 * 1i; 37 // CHECK: @g2 ={{.*}} global { i32, i32 } { i32 1, i32 10 } 38 _Complex int g2 = 1 + 10i; 39 // CHECK: @g3 ={{.*}} global { float, float } { float 1.000000e+00{{[0]*}}, float 1.000000e+0{{[0]*}}1 } 40 _Complex float g3 = 1.0 + 10.0i; 41 // CHECK: @g4 ={{.*}} global { double, double } { double 1.000000e+00{{[0]*}}, double 1.000000e+0{{[0]*}}1 } 42 _Complex double g4 = 1.0 + 10.0i; 43 // CHECK: @g5 ={{.*}} global { i32, i32 } zeroinitializer 44 _Complex int g5 = (2 + 3i) == (5 + 7i); 45 // CHECK: @g6 ={{.*}} global { double, double } { double -1.100000e+0{{[0]*}}1, double 2.900000e+0{{[0]*}}1 } 46 _Complex double g6 = (2.0 + 3.0i) * (5.0 + 7.0i); 47 // CHECK: @g7 ={{.*}} global i32 1 48 int g7 = (2 + 3i) * (5 + 7i) == (-11 + 29i); 49 // CHECK: @g8 ={{.*}} global i32 1 50 int g8 = (2.0 + 3.0i) * (5.0 + 7.0i) == (-11.0 + 29.0i); 51 // CHECK: @g9 ={{.*}} global i32 0 52 int g9 = (2 + 3i) * (5 + 7i) != (-11 + 29i); 53 // CHECK: @g10 ={{.*}} global i32 0 54 int g10 = (2.0 + 3.0i) * (5.0 + 7.0i) != (-11.0 + 29.0i); 55 56 // PR5108 57 // CHECK: @gv1 ={{.*}} global %struct.anon <{ i32 0, i8 7 }>, align 1 58 struct { 59 unsigned long a; 60 unsigned long b:3; 61 } __attribute__((__packed__)) gv1 = { .a = 0x0, .b = 7, }; 62 63 // PR5118 64 // CHECK: @gv2 ={{.*}} global %struct.anon.0 <{ i8 1, ptr null }>, align 1 65 struct { 66 unsigned char a; 67 char *b; 68 } __attribute__((__packed__)) gv2 = { 1, (void*)0 }; 69 70 // Global references 71 // CHECK: @g11.l0 = internal global i32 ptrtoint (ptr @g11 to i32) 72 long g11(void) { 73 static long l0 = (long) g11; 74 return l0; 75 } 76 77 // CHECK: @g12 ={{.*}} global i32 ptrtoint (ptr @g12_tmp to i32) 78 static char g12_tmp; 79 long g12 = (long) &g12_tmp; 80 81 // CHECK: @g13 ={{.*}} global [1 x %struct.g13_s0] [%struct.g13_s0 { i32 ptrtoint (ptr @g12_tmp to i32) }] 82 struct g13_s0 { 83 long a; 84 }; 85 struct g13_s0 g13[] = { 86 { (long) &g12_tmp } 87 }; 88 89 // CHECK: @g14 ={{.*}} global ptr inttoptr (i32 100 to ptr) 90 void *g14 = (void*) 100; 91 92 // CHECK: @g15 ={{.*}} global i32 -1 93 int g15 = (int) (char) ((void*) 0 + 255); 94 95 // CHECK: @g16 ={{.*}} global i64 4294967295 96 long long g16 = (long long) ((void*) 0xFFFFFFFF); 97 98 // CHECK: @g17 ={{.*}} global ptr @g15 99 int *g17 = (int *) ((long) &g15); 100 101 // CHECK: @g18.p = internal global [1 x ptr] [ptr @g19] 102 void g18(void) { 103 extern int g19; 104 static int *p[] = { &g19 }; 105 } 106 107 // CHECK: @g20.l0 = internal global %struct.g20_s1 { ptr null, ptr @g20.l0 } 108 struct g20_s0; 109 struct g20_s1 { 110 struct g20_s0 *f0, **f1; 111 }; 112 void *g20(void) { 113 static struct g20_s1 l0 = { ((void*) 0), &l0.f0 }; 114 return l0.f1; 115 } 116 117 // PR4108 118 struct g21 {int g21;}; 119 const struct g21 g21 = (struct g21){1}; 120 121 // PR5474 122 struct g22 {int x;} __attribute((packed)); 123 struct g23 {char a; short b; char c; struct g22 d;}; 124 struct g23 g24 = {1,2,3,4}; 125 126 // CHECK: @g25.g26 = internal global ptr @[[FUNC:.*]], align 4 127 // CHECK: @[[FUNC]] = private unnamed_addr constant [4 x i8] c"g25\00" 128 int g25(void) { 129 static const char *g26 = __func__; 130 return *g26; 131 } 132 133 // CHECK: @g27.x = internal global ptr @g27.x, align 4 134 void g27(void) { // PR8073 135 static void *x = &x; 136 } 137 138 void g28(void) { 139 typedef long long v1i64 __attribute((vector_size(8))); 140 typedef short v12i16 __attribute((vector_size(24))); 141 typedef long double v2f80 __attribute((vector_size(24))); 142 // CHECK: @g28.a = internal global <1 x i64> splat (i64 10) 143 // @g28.b = internal global <12 x i16> <i16 0, i16 0, i16 0, i16 -32768, i16 16383, i16 0, i16 0, i16 0, i16 0, i16 -32768, i16 16384, i16 0> 144 // @g28.c = internal global <2 x x86_fp80> <x86_fp80 0xK3FFF8000000000000000, x86_fp80 0xK40008000000000000000>, align 32 145 static v1i64 a = (v1i64)10LL; 146 //FIXME: support constant bitcast between vectors of x86_fp80 147 //static v12i16 b = (v12i16)(v2f80){1,2}; 148 //static v2f80 c = (v2f80)(v12i16){0,0,0,-32768,16383,0,0,0,0,-32768,16384,0}; 149 } 150 151 // PR13643 152 void g29(void) { 153 typedef char DCC_PASSWD[2]; 154 typedef struct 155 { 156 DCC_PASSWD passwd; 157 } DCC_SRVR_NM; 158 // CHECK: @g29.a = internal global %struct.DCC_SRVR_NM { [2 x i8] c"@\00" }, align 1 159 // CHECK: @g29.b = internal global [1 x i32] [i32 ptrtoint (ptr @.str.1 to i32)], align 4 160 // CHECK: @g29.c = internal global [1 x i32] [i32 97], align 4 161 static DCC_SRVR_NM a = { {"@"} }; 162 static int b[1] = { "asdf" }; 163 static int c[1] = { L"a" }; 164 } 165 166 // PR21300 167 void g30(void) { 168 #pragma pack(1) 169 static struct { 170 int : 1; 171 int x; 172 } a = {}; 173 // CHECK: @g30.a = internal global %struct.anon.1 zeroinitializer, align 1 174 #pragma pack() 175 } 176 177 void g31(void) { 178 #pragma pack(4) 179 static struct { 180 short a; 181 long x; 182 short z; 183 } a = {23122, -12312731, -312}; 184 #pragma pack() 185 // CHECK: @g31.a = internal global { i16, [2 x i8], i32, i16, [2 x i8] } { i16 23122, [2 x i8] zeroinitializer, i32 -12312731, i16 -312, [2 x i8] zeroinitializer }, align 4 186 } 187 188 // Clang should evaluate this in constant context, so floating point mode should 189 // have no effect. 190 // CHECK: @.compoundliteral = internal global [1 x float] [float 0x3FB99999A0000000], align 4 191 struct { const float *floats; } compoundliteral = { 192 (float[1]) { 0.1, }, 193 }; 194 195 struct PR4517_foo { 196 int x; 197 }; 198 struct PR4517_bar { 199 struct PR4517_foo foo; 200 }; 201 const struct PR4517_foo my_foo = {.x = 42}; 202 struct PR4517_bar my_bar = {.foo = my_foo}; 203 struct PR4517_bar my_bar2 = (struct PR4517_bar){.foo = my_foo}; 204 struct PR4517_bar my_bar3 = {my_foo}; 205 struct PR4517_bar my_bar4 = (struct PR4517_bar){my_foo}; 206 // CHECK: @my_foo = constant %struct.PR4517_foo { i32 42 }, align 4 207 // CHECK: @my_bar = global %struct.PR4517_bar { %struct.PR4517_foo { i32 42 } }, align 4 208 // CHECK: @my_bar2 = global %struct.PR4517_bar { %struct.PR4517_foo { i32 42 } }, align 4 209 // CHECK: @my_bar3 = global %struct.PR4517_bar { %struct.PR4517_foo { i32 42 } }, align 4 210 // CHECK: @my_bar4 = global %struct.PR4517_bar { %struct.PR4517_foo { i32 42 } }, align 4 211 const int PR4517_arrc[2] = {41, 42}; 212 int PR4517_x = PR4517_arrc[1]; 213 const int PR4517_idx = 1; 214 int PR4517_x2 = PR4517_arrc[PR4517_idx]; 215 // CHECK: @PR4517_arrc = constant [2 x i32] [i32 41, i32 42], align 4 216 // CHECK: @PR4517_x = global i32 42, align 4 217 // CHECK: @PR4517_idx = constant i32 1, align 4 218 // CHECK: @PR4517_x2 = global i32 42, align 4 219 220 // CHECK: @GH84784_inf = constant i8 1 221 _Bool const GH84784_inf = (1.0/0.0); 222