1 // RUN: %clang_cc1 -emit-llvm -o %t %s 2 // RUN: not grep __builtin %t 3 // RUN: %clang_cc1 %s -emit-llvm -o - -triple x86_64-darwin-apple | FileCheck %s 4 5 int printf(const char *, ...); 6 7 void p(char *str, int x) { 8 printf("%s: %d\n", str, x); 9 } 10 void q(char *str, double x) { 11 printf("%s: %f\n", str, x); 12 } 13 void r(char *str, void *ptr) { 14 printf("%s: %p\n", str, ptr); 15 } 16 17 int random(void); 18 19 int main() { 20 int N = random(); 21 #define P(n,args) p(#n #args, __builtin_##n args) 22 #define Q(n,args) q(#n #args, __builtin_##n args) 23 #define R(n,args) r(#n #args, __builtin_##n args) 24 #define V(n,args) p(#n #args, (__builtin_##n args, 0)) 25 P(types_compatible_p, (int, float)); 26 P(choose_expr, (0, 10, 20)); 27 P(constant_p, (sizeof(10))); 28 P(expect, (N == 12, 0)); 29 V(prefetch, (&N)); 30 V(prefetch, (&N, 1)); 31 V(prefetch, (&N, 1, 0)); 32 33 // Numeric Constants 34 35 Q(huge_val, ()); 36 Q(huge_valf, ()); 37 Q(huge_vall, ()); 38 Q(inf, ()); 39 Q(inff, ()); 40 Q(infl, ()); 41 42 P(fpclassify, (0, 1, 2, 3, 4, 1.0)); 43 P(fpclassify, (0, 1, 2, 3, 4, 1.0f)); 44 P(fpclassify, (0, 1, 2, 3, 4, 1.0l)); 45 // FIXME: 46 // P(isinf_sign, (1.0)); 47 48 Q(nan, ("")); 49 Q(nanf, ("")); 50 Q(nanl, ("")); 51 Q(nans, ("")); 52 Q(nan, ("10")); 53 Q(nanf, ("10")); 54 Q(nanl, ("10")); 55 Q(nans, ("10")); 56 57 P(isgreater, (1., 2.)); 58 P(isgreaterequal, (1., 2.)); 59 P(isless, (1., 2.)); 60 P(islessequal, (1., 2.)); 61 P(islessgreater, (1., 2.)); 62 P(isunordered, (1., 2.)); 63 64 P(isnan, (1.)); 65 66 // Bitwise & Numeric Functions 67 68 P(abs, (N)); 69 70 P(clz, (N)); 71 P(clzl, (N)); 72 P(clzll, (N)); 73 P(ctz, (N)); 74 P(ctzl, (N)); 75 P(ctzll, (N)); 76 P(ffs, (N)); 77 P(ffsl, (N)); 78 P(ffsll, (N)); 79 P(parity, (N)); 80 P(parityl, (N)); 81 P(parityll, (N)); 82 P(popcount, (N)); 83 P(popcountl, (N)); 84 P(popcountll, (N)); 85 Q(powi, (1.2f, N)); 86 Q(powif, (1.2f, N)); 87 Q(powil, (1.2f, N)); 88 89 // Lib functions 90 int a, b, n = random(); // Avoid optimizing out. 91 char s0[10], s1[] = "Hello"; 92 V(strcat, (s0, s1)); 93 V(strcmp, (s0, s1)); 94 V(strncat, (s0, s1, n)); 95 V(strchr, (s0, s1[0])); 96 V(strrchr, (s0, s1[0])); 97 V(strcpy, (s0, s1)); 98 V(strncpy, (s0, s1, n)); 99 100 // Object size checking 101 V(__memset_chk, (s0, 0, sizeof s0, n)); 102 V(__memcpy_chk, (s0, s1, sizeof s0, n)); 103 V(__memmove_chk, (s0, s1, sizeof s0, n)); 104 V(__mempcpy_chk, (s0, s1, sizeof s0, n)); 105 V(__strncpy_chk, (s0, s1, sizeof s0, n)); 106 V(__strcpy_chk, (s0, s1, n)); 107 s0[0] = 0; 108 V(__strcat_chk, (s0, s1, n)); 109 P(object_size, (s0, 0)); 110 P(object_size, (s0, 1)); 111 P(object_size, (s0, 2)); 112 P(object_size, (s0, 3)); 113 114 // Whatever 115 116 P(bswap32, (N)); 117 P(bswap64, (N)); 118 // FIXME 119 // V(clear_cache, (&N, &N+1)); 120 V(trap, ()); 121 R(extract_return_addr, (&N)); 122 P(signbit, (1.0)); 123 124 return 0; 125 } 126 127 128 129 void foo() { 130 __builtin_strcat(0, 0); 131 } 132 133 // CHECK: define void @bar( 134 void bar() { 135 float f; 136 double d; 137 long double ld; 138 139 // LLVM's hex representation of float constants is really unfortunate; 140 // basically it does a float-to-double "conversion" and then prints the 141 // hex form of that. That gives us weird artifacts like exponents 142 // that aren't numerically similar to the original exponent and 143 // significand bit-patterns that are offset by three bits (because 144 // the exponent was expanded from 8 bits to 11). 145 // 146 // 0xAE98 == 1010111010011000 147 // 0x15D3 == 1010111010011 148 149 f = __builtin_huge_valf(); // CHECK: float 0x7FF0000000000000 150 d = __builtin_huge_val(); // CHECK: double 0x7FF0000000000000 151 ld = __builtin_huge_vall(); // CHECK: x86_fp80 0xK7FFF8000000000000000 152 f = __builtin_nanf(""); // CHECK: float 0x7FF8000000000000 153 d = __builtin_nan(""); // CHECK: double 0x7FF8000000000000 154 ld = __builtin_nanl(""); // CHECK: x86_fp80 0xK7FFFC000000000000000 155 f = __builtin_nanf("0xAE98"); // CHECK: float 0x7FF815D300000000 156 d = __builtin_nan("0xAE98"); // CHECK: double 0x7FF800000000AE98 157 ld = __builtin_nanl("0xAE98"); // CHECK: x86_fp80 0xK7FFFC00000000000AE98 158 f = __builtin_nansf(""); // CHECK: float 0x7FF4000000000000 159 d = __builtin_nans(""); // CHECK: double 0x7FF4000000000000 160 ld = __builtin_nansl(""); // CHECK: x86_fp80 0xK7FFFA000000000000000 161 f = __builtin_nansf("0xAE98"); // CHECK: float 0x7FF015D300000000 162 d = __builtin_nans("0xAE98"); // CHECK: double 0x7FF000000000AE98 163 ld = __builtin_nansl("0xAE98");// CHECK: x86_fp80 0xK7FFF800000000000AE98 164 165 } 166 // CHECK: } 167 168 169 // CHECK: define void @test_float_builtins 170 void test_float_builtins(float F, double D, long double LD) { 171 volatile int res; 172 res = __builtin_isinf(F); 173 // CHECK: call float @fabsf(float 174 // CHECK: fcmp oeq float {{.*}}, 0x7FF0000000000000 175 176 res = __builtin_isinf(D); 177 // CHECK: call double @fabs(double 178 // CHECK: fcmp oeq double {{.*}}, 0x7FF0000000000000 179 180 res = __builtin_isinf(LD); 181 // CHECK: call x86_fp80 @fabsl(x86_fp80 182 // CHECK: fcmp oeq x86_fp80 {{.*}}, 0xK7FFF8000000000000000 183 184 res = __builtin_isfinite(F); 185 // CHECK: fcmp oeq float 186 // CHECK: call float @fabsf 187 // CHECK: fcmp une float {{.*}}, 0x7FF0000000000000 188 // CHECK: and i1 189 190 res = __builtin_isnormal(F); 191 // CHECK: fcmp oeq float 192 // CHECK: call float @fabsf 193 // CHECK: fcmp ult float {{.*}}, 0x7FF0000000000000 194 // CHECK: fcmp uge float {{.*}}, 0x3810000000000000 195 // CHECK: and i1 196 // CHECK: and i1 197 } 198 199 // CHECK: define void @test_builtin_longjmp 200 void test_builtin_longjmp(void **buffer) { 201 // CHECK: [[BITCAST:%.*]] = bitcast 202 // CHECK-NEXT: call void @llvm.eh.sjlj.longjmp(i8* [[BITCAST]]) 203 __builtin_longjmp(buffer, 1); 204 // CHECK-NEXT: unreachable 205 } 206