1 // Test that the GCC fast-math floating point flags get lowered to the correct 2 // permutation of Clang frontend flags. This is non-trivial for a few reasons. 3 // First, the GCC flags have many different and surprising effects. Second, 4 // LLVM only supports three switches which is more coarse grained than GCC's 5 // support. 6 // 7 // Both of them use gcc driver for as. 8 // REQUIRES: clang-driver 9 // 10 // RUN: %clang -### -fno-honor-infinities -c %s 2>&1 \ 11 // RUN: | FileCheck --check-prefix=CHECK-NO-INFS %s 12 // infinites [sic] is a supported alternative spelling of infinities. 13 // RUN: %clang -### -fno-honor-infinites -c %s 2>&1 \ 14 // RUN: | FileCheck --check-prefix=CHECK-NO-INFS %s 15 // CHECK-NO-INFS: "-cc1" 16 // CHECK-NO-INFS: "-menable-no-infs" 17 // 18 // RUN: %clang -### -fno-fast-math -fno-honor-infinities -c %s 2>&1 \ 19 // RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH-NO-INFS %s 20 // CHECK-NO-FAST-MATH-NO-INFS: "-cc1" 21 // CHECK-NO-FAST-MATH-NO-INFS: "-menable-no-infs" 22 // 23 // RUN: %clang -### -fno-honor-infinities -fno-fast-math -c %s 2>&1 \ 24 // RUN: | FileCheck --check-prefix=CHECK-NO-INFS-NO-FAST-MATH %s 25 // CHECK-NO-INFS-NO-FAST-MATH: "-cc1" 26 // CHECK-NO-INFS-NO-FAST-MATH-NOT: "-menable-no-infs" 27 // 28 // RUN: %clang -### -fno-signed-zeros -c %s 2>&1 \ 29 // RUN: | FileCheck --check-prefix=CHECK-NO-SIGNED-ZEROS %s 30 // CHECK-NO-SIGNED-ZEROS: "-cc1" 31 // CHECK-NO-SIGNED-ZEROS: "-fno-signed-zeros" 32 // 33 // RUN: %clang -### -fno-fast-math -fno-signed-zeros -c %s 2>&1 \ 34 // RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH-NO-SIGNED-ZEROS %s 35 // CHECK-NO-FAST-MATH-NO-SIGNED-ZEROS: "-cc1" 36 // CHECK-NO-FAST-MATH-NO-SIGNED-ZEROS: "-fno-signed-zeros" 37 // 38 // RUN: %clang -### -fno-signed-zeros -fno-fast-math -c %s 2>&1 \ 39 // RUN: | FileCheck --check-prefix=CHECK-NO-SIGNED-ZEROS-NO-FAST-MATH %s 40 // CHECK-NO-SIGNED-ZEROS-NO-FAST-MATH: "-cc1" 41 // CHECK-NO-SIGNED-ZEROS-NO-FAST-MATH-NOT: "-fno-signed-zeros" 42 // 43 // RUN: %clang -### -freciprocal-math -c %s 2>&1 \ 44 // RUN: | FileCheck --check-prefix=CHECK-RECIPROCAL-MATH %s 45 // CHECK-RECIPROCAL-MATH: "-cc1" 46 // CHECK-RECIPROCAL-MATH: "-freciprocal-math" 47 // 48 // RUN: %clang -### -fno-fast-math -freciprocal-math -c %s 2>&1 \ 49 // RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH-RECIPROCAL-MATH %s 50 // CHECK-NO-FAST-MATH-RECIPROCAL-MATH: "-cc1" 51 // CHECK-NO-FAST-MATH-RECIPROCAL-MATH: "-freciprocal-math" 52 // 53 // RUN: %clang -### -freciprocal-math -fno-fast-math -c %s 2>&1 \ 54 // RUN: | FileCheck --check-prefix=CHECK-RECIPROCAL-MATH-NO-FAST-MATH %s 55 // CHECK-RECIPROCAL-MATH-NO-FAST-MATH: "-cc1" 56 // CHECK-RECIPROCAL-MATH-NO-FAST-MATH-NOT: "-freciprocal-math" 57 // 58 // RUN: %clang -### -fno-honor-nans -c %s 2>&1 \ 59 // RUN: | FileCheck --check-prefix=CHECK-NO-NANS %s 60 // CHECK-NO-NANS: "-cc1" 61 // CHECK-NO-NANS: "-menable-no-nans" 62 // 63 // RUN: %clang -### -fno-fast-math -fno-honor-nans -c %s 2>&1 \ 64 // RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH-NO-NANS %s 65 // CHECK-NO-FAST-MATH-NO-NANS: "-cc1" 66 // CHECK-NO-FAST-MATH-NO-NANS: "-menable-no-nans" 67 // 68 // RUN: %clang -### -fno-honor-nans -fno-fast-math -c %s 2>&1 \ 69 // RUN: | FileCheck --check-prefix=CHECK-NO-NANS-NO-FAST-MATH %s 70 // CHECK-NO-NANS-NO-FAST-MATH: "-cc1" 71 // CHECK-NO-NANS-NO-FAST-MATH-NOT: "-menable-no-nans" 72 // 73 // RUN: %clang -### -fmath-errno -c %s 2>&1 \ 74 // RUN: | FileCheck --check-prefix=CHECK-MATH-ERRNO %s 75 // CHECK-MATH-ERRNO: "-cc1" 76 // CHECK-MATH-ERRNO: "-fmath-errno" 77 // 78 // RUN: %clang -### -fmath-errno -fno-math-errno -c %s 2>&1 \ 79 // RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s 80 // CHECK-NO-MATH-ERRNO: "-cc1" 81 // CHECK-NO-MATH-ERRNO-NOT: "-fmath-errno" 82 // 83 // Target defaults for -fmath-errno (reusing the above checks). 84 // RUN: %clang -### -target i686-unknown-linux -c %s 2>&1 \ 85 // RUN: | FileCheck --check-prefix=CHECK-MATH-ERRNO %s 86 // RUN: %clang -### -target i686-apple-darwin -c %s 2>&1 \ 87 // RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s 88 // RUN: %clang -### -target x86_64-unknown-freebsd -c %s 2>&1 \ 89 // RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s 90 // RUN: %clang -### -target x86_64-unknown-netbsd -c %s 2>&1 \ 91 // RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s 92 // RUN: %clang -### -target x86_64-unknown-openbsd -c %s 2>&1 \ 93 // RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s 94 // RUN: %clang -### -target x86_64-unknown-dragonfly -c %s 2>&1 \ 95 // RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s 96 // 97 // Check that -ffast-math disables -fmath-errno, and -fno-fast-math merely 98 // preserves the target default. Also check various flag set operations between 99 // the two flags. (Resuses above checks.) 100 // RUN: %clang -### -ffast-math -c %s 2>&1 \ 101 // RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s 102 // RUN: %clang -### -fmath-errno -ffast-math -c %s 2>&1 \ 103 // RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s 104 // RUN: %clang -### -ffast-math -fmath-errno -c %s 2>&1 \ 105 // RUN: | FileCheck --check-prefix=CHECK-MATH-ERRNO %s 106 // RUN: %clang -### -target i686-unknown-linux -fno-fast-math -c %s 2>&1 \ 107 // RUN: | FileCheck --check-prefix=CHECK-MATH-ERRNO %s 108 // RUN: %clang -### -target i686-unknown-linux -fno-math-errno -fno-fast-math -c %s 2>&1 \ 109 // RUN: | FileCheck --check-prefix=CHECK-MATH-ERRNO %s 110 // RUN: %clang -### -target i686-apple-darwin -fno-fast-math -c %s 2>&1 \ 111 // RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s 112 // RUN: %clang -### -target i686-apple-darwin -fno-math-errno -fno-fast-math -c %s 2>&1 \ 113 // RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s 114 // RUN: %clang -### -fno-fast-math -fno-math-errno -c %s 2>&1 \ 115 // RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s 116 // 117 // RUN: %clang -### -fno-math-errno -fassociative-math -freciprocal-math \ 118 // RUN: -fno-signed-zeros -fno-trapping-math -c %s 2>&1 \ 119 // RUN: | FileCheck --check-prefix=CHECK-UNSAFE-MATH %s 120 // CHECK-UNSAFE-MATH: "-cc1" 121 // CHECK-UNSAFE-MATH: "-menable-unsafe-fp-math" 122 // 123 // RUN: %clang -### -fno-fast-math -fno-math-errno -fassociative-math -freciprocal-math \ 124 // RUN: -fno-signed-zeros -fno-trapping-math -c %s 2>&1 \ 125 // RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH-UNSAFE-MATH %s 126 // CHECK-NO-FAST-MATH-UNSAFE-MATH: "-cc1" 127 // CHECK-NO-FAST-MATH-UNSAFE-MATH: "-menable-unsafe-fp-math" 128 // 129 // RUN: %clang -### -fno-fast-math -fno-math-errno -fassociative-math -freciprocal-math \ 130 // RUN: -fno-fast-math -fno-signed-zeros -fno-trapping-math -c %s 2>&1 \ 131 // RUN: | FileCheck --check-prefix=CHECK-UNSAFE-MATH-NO-FAST-MATH %s 132 // CHECK-UNSAFE-MATH-NO-FAST-MATH: "-cc1" 133 // CHECK-UNSAFE-MATH-NO-FAST-MATH-NOT: "-menable-unsafe-fp-math" 134 // 135 // Check that various umbrella flags also enable these frontend options. 136 // RUN: %clang -### -ffast-math -c %s 2>&1 \ 137 // RUN: | FileCheck --check-prefix=CHECK-NO-INFS %s 138 // RUN: %clang -### -ffast-math -c %s 2>&1 \ 139 // RUN: | FileCheck --check-prefix=CHECK-NO-NANS %s 140 // RUN: %clang -### -ffast-math -c %s 2>&1 \ 141 // RUN: | FileCheck --check-prefix=CHECK-UNSAFE-MATH %s 142 // RUN: %clang -### -ffinite-math-only -c %s 2>&1 \ 143 // RUN: | FileCheck --check-prefix=CHECK-NO-INFS %s 144 // RUN: %clang -### -ffinite-math-only -c %s 2>&1 \ 145 // RUN: | FileCheck --check-prefix=CHECK-NO-NANS %s 146 // RUN: %clang -### -funsafe-math-optimizations -fno-math-errno -c %s 2>&1 \ 147 // RUN: | FileCheck --check-prefix=CHECK-UNSAFE-MATH %s 148 // 149 // One umbrella flag is *really* weird and also changes the semantics of the 150 // program by adding a special preprocessor macro. Check that the frontend flag 151 // modeling this semantic change is provided. Also check that the semantic 152 // impact remains even if every optimization is disabled. 153 // RUN: %clang -### -ffast-math -c %s 2>&1 \ 154 // RUN: | FileCheck --check-prefix=CHECK-FAST-MATH %s 155 // RUN: %clang -### -fno-fast-math -ffast-math -c %s 2>&1 \ 156 // RUN: | FileCheck --check-prefix=CHECK-FAST-MATH %s 157 // RUN: %clang -### -ffast-math -fno-finite-math-only \ 158 // RUN: -fno-unsafe-math-optimizations -fmath-errno -c %s 2>&1 \ 159 // RUN: | FileCheck --check-prefix=CHECK-FAST-MATH %s 160 // CHECK-FAST-MATH: "-cc1" 161 // CHECK-FAST-MATH: "-ffast-math" 162 // 163 // RUN: %clang -### -ffast-math -fno-fast-math -c %s 2>&1 \ 164 // RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH %s 165 // CHECK-NO-FAST-MATH: "-cc1" 166 // CHECK-NO-FAST-MATH-NOT: "-ffast-math" 167 // 168 // Check various means of disabling these flags, including disabling them after 169 // they've been enabled via an umbrella flag. 170 // RUN: %clang -### -fno-honor-infinities -fhonor-infinities -c %s 2>&1 \ 171 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-INFS %s 172 // RUN: %clang -### -ffinite-math-only -fhonor-infinities -c %s 2>&1 \ 173 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-INFS %s 174 // RUN: %clang -### -ffinite-math-only -fno-finite-math-only -c %s 2>&1 \ 175 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-INFS %s 176 // RUN: %clang -### -ffast-math -fhonor-infinities -c %s 2>&1 \ 177 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-INFS %s 178 // RUN: %clang -### -ffast-math -fno-finite-math-only -c %s 2>&1 \ 179 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-INFS %s 180 // CHECK-NO-NO-INFS: "-cc1" 181 // CHECK-NO-NO-INFS-NOT: "-menable-no-infs" 182 // CHECK-NO-NO-INFS: "-o" 183 // 184 // RUN: %clang -### -fno-honor-nans -fhonor-nans -c %s 2>&1 \ 185 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-NANS %s 186 // RUN: %clang -### -ffinite-math-only -fhonor-nans -c %s 2>&1 \ 187 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-NANS %s 188 // RUN: %clang -### -ffinite-math-only -fno-finite-math-only -c %s 2>&1 \ 189 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-NANS %s 190 // RUN: %clang -### -ffast-math -fhonor-nans -c %s 2>&1 \ 191 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-NANS %s 192 // RUN: %clang -### -ffast-math -fno-finite-math-only -c %s 2>&1 \ 193 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-NANS %s 194 // CHECK-NO-NO-NANS: "-cc1" 195 // CHECK-NO-NO-NANS-NOT: "-menable-no-nans" 196 // CHECK-NO-NO-NANS: "-o" 197 // 198 // RUN: %clang -### -fassociative-math -freciprocal-math -fno-signed-zeros \ 199 // RUN: -fno-trapping-math -fno-associative-math -c %s 2>&1 \ 200 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 201 // RUN: %clang -### -fassociative-math -freciprocal-math -fno-signed-zeros \ 202 // RUN: -fno-trapping-math -fno-reciprocal-math -c %s 2>&1 \ 203 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 204 // RUN: %clang -### -fassociative-math -freciprocal-math -fno-signed-zeros \ 205 // RUN: -fno-trapping-math -fsigned-zeros -c %s 2>&1 \ 206 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 207 // RUN: %clang -### -fassociative-math -freciprocal-math -fno-signed-zeros \ 208 // RUN: -fno-trapping-math -ftrapping-math -c %s 2>&1 \ 209 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 210 // RUN: %clang -### -funsafe-math-optimizations -fno-associative-math -c %s \ 211 // RUN: 2>&1 | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 212 // RUN: %clang -### -funsafe-math-optimizations -fno-reciprocal-math -c %s \ 213 // RUN: 2>&1 | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 214 // RUN: %clang -### -funsafe-math-optimizations -fsigned-zeros -c %s 2>&1 \ 215 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 216 // RUN: %clang -### -funsafe-math-optimizations -ftrapping-math -c %s 2>&1 \ 217 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 218 // RUN: %clang -### -funsafe-math-optimizations -fno-unsafe-math-optimizations \ 219 // RUN: -c %s 2>&1 \ 220 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 221 // RUN: %clang -### -ffast-math -fno-associative-math -c %s 2>&1 \ 222 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 223 // RUN: %clang -### -ffast-math -fno-reciprocal-math -c %s 2>&1 \ 224 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 225 // RUN: %clang -### -ffast-math -fsigned-zeros -c %s 2>&1 \ 226 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 227 // RUN: %clang -### -ffast-math -ftrapping-math -c %s 2>&1 \ 228 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 229 // RUN: %clang -### -ffast-math -fno-unsafe-math-optimizations -c %s 2>&1 \ 230 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 231 // CHECK-NO-UNSAFE-MATH: "-cc1" 232 // CHECK-NO-UNSAFE-MATH-NOT: "-menable-unsafe-fp-math" 233 // CHECK-NO-UNSAFE-MATH: "-o" 234
