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 // CHECK-NO-INFS: "-cc1" 13 // CHECK-NO-INFS: "-menable-no-infs" 14 // 15 // RUN: %clang -### -fno-fast-math -fno-honor-infinities -c %s 2>&1 \ 16 // RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH-NO-INFS %s 17 // CHECK-NO-FAST-MATH-NO-INFS: "-cc1" 18 // CHECK-NO-FAST-MATH-NO-INFS: "-menable-no-infs" 19 // 20 // RUN: %clang -### -fno-honor-infinities -fno-fast-math -c %s 2>&1 \ 21 // RUN: | FileCheck --check-prefix=CHECK-NO-INFS-NO-FAST-MATH %s 22 // CHECK-NO-INFS-NO-FAST-MATH: "-cc1" 23 // CHECK-NO-INFS-NO-FAST-MATH-NOT: "-menable-no-infs" 24 // 25 // RUN: %clang -### -fno-honor-nans -c %s 2>&1 \ 26 // RUN: | FileCheck --check-prefix=CHECK-NO-NANS %s 27 // CHECK-NO-NANS: "-cc1" 28 // CHECK-NO-NANS: "-menable-no-nans" 29 // 30 // RUN: %clang -### -fno-fast-math -fno-honor-nans -c %s 2>&1 \ 31 // RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH-NO-NANS %s 32 // CHECK-NO-FAST-MATH-NO-NANS: "-cc1" 33 // CHECK-NO-FAST-MATH-NO-NANS: "-menable-no-nans" 34 // 35 // RUN: %clang -### -fno-honor-nans -fno-fast-math -c %s 2>&1 \ 36 // RUN: | FileCheck --check-prefix=CHECK-NO-NANS-NO-FAST-MATH %s 37 // CHECK-NO-NANS-NO-FAST-MATH: "-cc1" 38 // CHECK-NO-NANS-NO-FAST-MATH-NOT: "-menable-no-nans" 39 // 40 // RUN: %clang -### -fmath-errno -c %s 2>&1 \ 41 // RUN: | FileCheck --check-prefix=CHECK-MATH-ERRNO %s 42 // CHECK-MATH-ERRNO: "-cc1" 43 // CHECK-MATH-ERRNO: "-fmath-errno" 44 // 45 // RUN: %clang -### -fno-fast-math -fmath-errno -c %s 2>&1 \ 46 // RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH-MATH-ERRNO %s 47 // CHECK-NO-FAST-MATH-MATH-ERRNO: "-cc1" 48 // CHECK-NO-FAST-MATH-MATH-ERRNO: "-fmath-errno" 49 // 50 // RUN: %clang -### -fmath-errno -fno-fast-math -c %s 2>&1 \ 51 // RUN: | FileCheck --check-prefix=CHECK-MATH-ERRNO-NO-FAST-MATH %s 52 // CHECK-MATH-ERRNO-NO-FAST-MATH: "-cc1" 53 // CHECK-MATH-ERRNO-NO-FAST-MATH-NOT: "-fmath-errno" 54 // 55 // RUN: %clang -### -fmath-errno -fno-math-errno -c %s 2>&1 \ 56 // RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s 57 // RUN: %clang -### -target i686-apple-darwin -c %s 2>&1 \ 58 // RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s 59 // RUN: %clang -### -target x86_64-unknown-freebsd -c %s 2>&1 \ 60 // RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s 61 // RUN: %clang -### -target x86_64-unknown-netbsd -c %s 2>&1 \ 62 // RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s 63 // RUN: %clang -### -target x86_64-unknown-openbsd -c %s 2>&1 \ 64 // RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s 65 // RUN: %clang -### -target x86_64-unknown-dragonfly -c %s 2>&1 \ 66 // RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s 67 // CHECK-NO-MATH-ERRNO: "-cc1" 68 // CHECK-NO-MATH-ERRNO-NOT: "-fmath-errno" 69 // 70 // RUN: %clang -### -fno-math-errno -fassociative-math -freciprocal-math \ 71 // RUN: -fno-signed-zeros -fno-trapping-math -c %s 2>&1 \ 72 // RUN: | FileCheck --check-prefix=CHECK-UNSAFE-MATH %s 73 // CHECK-UNSAFE-MATH: "-cc1" 74 // CHECK-UNSAFE-MATH: "-menable-unsafe-fp-math" 75 // 76 // RUN: %clang -### -fno-fast-math -fno-math-errno -fassociative-math -freciprocal-math \ 77 // RUN: -fno-signed-zeros -fno-trapping-math -c %s 2>&1 \ 78 // RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH-UNSAFE-MATH %s 79 // CHECK-NO-FAST-MATH-UNSAFE-MATH: "-cc1" 80 // CHECK-NO-FAST-MATH-UNSAFE-MATH: "-menable-unsafe-fp-math" 81 // 82 // RUN: %clang -### -fno-fast-math -fno-math-errno -fassociative-math -freciprocal-math \ 83 // RUN: -fno-fast-math -fno-signed-zeros -fno-trapping-math -c %s 2>&1 \ 84 // RUN: | FileCheck --check-prefix=CHECK-UNSAFE-MATH-NO-FAST-MATH %s 85 // CHECK-UNSAFE-MATH-NO-FAST-MATH: "-cc1" 86 // CHECK-UNSAFE-MATH-NO-FAST-MATH-NOT: "-menable-unsafe-fp-math" 87 // 88 // Check that various umbrella flags also enable these frontend options. 89 // RUN: %clang -### -ffast-math -c %s 2>&1 \ 90 // RUN: | FileCheck --check-prefix=CHECK-NO-INFS %s 91 // RUN: %clang -### -ffast-math -c %s 2>&1 \ 92 // RUN: | FileCheck --check-prefix=CHECK-NO-NANS %s 93 // RUN: %clang -### -ffast-math -c %s 2>&1 \ 94 // RUN: | FileCheck --check-prefix=CHECK-UNSAFE-MATH %s 95 // RUN: %clang -### -ffinite-math-only -c %s 2>&1 \ 96 // RUN: | FileCheck --check-prefix=CHECK-NO-INFS %s 97 // RUN: %clang -### -ffinite-math-only -c %s 2>&1 \ 98 // RUN: | FileCheck --check-prefix=CHECK-NO-NANS %s 99 // RUN: %clang -### -funsafe-math-optimizations -fno-math-errno -c %s 2>&1 \ 100 // RUN: | FileCheck --check-prefix=CHECK-UNSAFE-MATH %s 101 // 102 // One umbrella flag is *really* weird and also changes the semantics of the 103 // program by adding a special preprocessor macro. Check that the frontend flag 104 // modeling this semantic change is provided. Also check that the semantic 105 // impact remains even if every optimization is disabled. 106 // RUN: %clang -### -ffast-math -c %s 2>&1 \ 107 // RUN: | FileCheck --check-prefix=CHECK-FAST-MATH %s 108 // RUN: %clang -### -fno-fast-math -ffast-math -c %s 2>&1 \ 109 // RUN: | FileCheck --check-prefix=CHECK-FAST-MATH %s 110 // RUN: %clang -### -ffast-math -fno-finite-math-only \ 111 // RUN: -fno-unsafe-math-optimizations -fmath-errno -c %s 2>&1 \ 112 // RUN: | FileCheck --check-prefix=CHECK-FAST-MATH %s 113 // CHECK-FAST-MATH: "-cc1" 114 // CHECK-FAST-MATH: "-ffast-math" 115 // 116 // RUN: %clang -### -ffast-math -fno-fast-math -c %s 2>&1 \ 117 // RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH %s 118 // CHECK-NO-FAST-MATH: "-cc1" 119 // CHECK-NO-FAST-MATH-NOT: "-ffast-math" 120 // 121 // Check various means of disabling these flags, including disabling them after 122 // they've been enabled via an umbrella flag. 123 // RUN: %clang -### -fno-honor-infinities -fhonor-infinities -c %s 2>&1 \ 124 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-INFS %s 125 // RUN: %clang -### -ffinite-math-only -fhonor-infinities -c %s 2>&1 \ 126 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-INFS %s 127 // RUN: %clang -### -ffinite-math-only -fno-finite-math-only -c %s 2>&1 \ 128 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-INFS %s 129 // RUN: %clang -### -ffast-math -fhonor-infinities -c %s 2>&1 \ 130 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-INFS %s 131 // RUN: %clang -### -ffast-math -fno-finite-math-only -c %s 2>&1 \ 132 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-INFS %s 133 // CHECK-NO-NO-INFS: "-cc1" 134 // CHECK-NO-NO-INFS-NOT: "-menable-no-infs" 135 // CHECK-NO-NO-INFS: "-o" 136 // 137 // RUN: %clang -### -fno-honor-nans -fhonor-nans -c %s 2>&1 \ 138 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-NANS %s 139 // RUN: %clang -### -ffinite-math-only -fhonor-nans -c %s 2>&1 \ 140 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-NANS %s 141 // RUN: %clang -### -ffinite-math-only -fno-finite-math-only -c %s 2>&1 \ 142 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-NANS %s 143 // RUN: %clang -### -ffast-math -fhonor-nans -c %s 2>&1 \ 144 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-NANS %s 145 // RUN: %clang -### -ffast-math -fno-finite-math-only -c %s 2>&1 \ 146 // RUN: | FileCheck --check-prefix=CHECK-NO-NO-NANS %s 147 // CHECK-NO-NO-NANS: "-cc1" 148 // CHECK-NO-NO-NANS-NOT: "-menable-no-nans" 149 // CHECK-NO-NO-NANS: "-o" 150 // 151 // RUN: %clang -### -fassociative-math -freciprocal-math -fno-signed-zeros \ 152 // RUN: -fno-trapping-math -fno-associative-math -c %s 2>&1 \ 153 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 154 // RUN: %clang -### -fassociative-math -freciprocal-math -fno-signed-zeros \ 155 // RUN: -fno-trapping-math -fno-reciprocal-math -c %s 2>&1 \ 156 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 157 // RUN: %clang -### -fassociative-math -freciprocal-math -fno-signed-zeros \ 158 // RUN: -fno-trapping-math -fsigned-zeros -c %s 2>&1 \ 159 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 160 // RUN: %clang -### -fassociative-math -freciprocal-math -fno-signed-zeros \ 161 // RUN: -fno-trapping-math -ftrapping-math -c %s 2>&1 \ 162 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 163 // RUN: %clang -### -funsafe-math-optimizations -fno-associative-math -c %s \ 164 // RUN: 2>&1 | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 165 // RUN: %clang -### -funsafe-math-optimizations -fno-reciprocal-math -c %s \ 166 // RUN: 2>&1 | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 167 // RUN: %clang -### -funsafe-math-optimizations -fsigned-zeros -c %s 2>&1 \ 168 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 169 // RUN: %clang -### -funsafe-math-optimizations -ftrapping-math -c %s 2>&1 \ 170 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 171 // RUN: %clang -### -funsafe-math-optimizations -fno-unsafe-math-optimizations \ 172 // RUN: -c %s 2>&1 \ 173 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 174 // RUN: %clang -### -ffast-math -fno-associative-math -c %s 2>&1 \ 175 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 176 // RUN: %clang -### -ffast-math -fno-reciprocal-math -c %s 2>&1 \ 177 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 178 // RUN: %clang -### -ffast-math -fsigned-zeros -c %s 2>&1 \ 179 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 180 // RUN: %clang -### -ffast-math -ftrapping-math -c %s 2>&1 \ 181 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 182 // RUN: %clang -### -ffast-math -fno-unsafe-math-optimizations -c %s 2>&1 \ 183 // RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s 184 // CHECK-NO-UNSAFE-MATH: "-cc1" 185 // CHECK-NO-UNSAFE-MATH-NOT: "-menable-unsafe-fp-math" 186 // CHECK-NO-UNSAFE-MATH: "-o" 187