clang/test/Driver/fast-math.c

   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 //
   9 // RUN: %clang -### -fno-honor-infinities -c %s 2>&1 \
  10 // RUN:   | FileCheck --check-prefixes=CHECK,NINF,NO-NNAN,NO-FINITE-ONLY %s
  11 // infinites [sic] is a supported alternative spelling of infinities.
  12 // RUN: %clang -### -fno-honor-infinites -c %s 2>&1 \
  13 // RUN:   | FileCheck --check-prefixes=CHECK,NINF,NO-NNAN,NO-FINITE-ONLY %s
  14 //
  15 // RUN: %clang -### -fno-fast-math -fno-honor-infinities -c %s 2>&1 \
  16 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NINF,NO-NNAN,NO-FINITE-ONLY %s
  17 //
  18 // RUN: %clang -### -fno-honor-infinities -fno-fast-math -c %s 2>&1 \
  19 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NO-NINF,NO-NNAN,NO-FINITE-ONLY %s
  20 //
  21 // RUN: %clang -### -fno-signed-zeros -c %s 2>&1 \
  22 // RUN:   | FileCheck --check-prefixes=CHECK,NSZ,NOROUNDING %s
  23 //
  24 // RUN: %clang -### -fno-fast-math -fno-signed-zeros -c %s 2>&1 \
  25 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NSZ %s
  26 //
  27 // RUN: %clang -### -fno-signed-zeros -fno-fast-math -c %s 2>&1 \
  28 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NO-NSZ,NOROUNDING %s
  29 //
  30 // RUN: %clang -### -freciprocal-math -c %s 2>&1 \
  31 // RUN:   | FileCheck --check-prefixes=CHECK,ARCP,NOROUNDING %s
  32 //
  33 // RUN: %clang -### -fno-fast-math -freciprocal-math -c %s 2>&1 \
  34 // RUN:   | FileCheck --check-prefixes=CHECK,ARCP,NOROUNDING %s
  35 //
  36 // RUN: %clang -### -freciprocal-math -fno-fast-math -c %s 2>&1 \
  37 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ARCP,NOROUNDING %s
  38 //
  39 // RUN: %clang -### -fno-honor-nans -c %s 2>&1 \
  40 // RUN:   | FileCheck --check-prefixes=CHECK,NNAN,NO-NINF,NO-FINITE-ONLY,NOROUNDING %s
  41 //
  42 // RUN: %clang -### -fno-fast-math -fno-honor-nans -c %s 2>&1 \
  43 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NNAN,NO-NINF,NO-FINITE-ONLY,NOROUNDING %s
  44 //
  45 // RUN: %clang -### -fno-honor-nans -fno-fast-math -c %s 2>&1 \
  46 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NO-NNAN,NO-NINF,NO-FINITE-ONLY,NOROUNDING %s
  47 //
  48 // RUN: %clang -### -ffast-math -fno-approx-func -c %s 2>&1 \
  49 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NINF,NNAN,FINITE-ONLY,NSZ,ARCP,NO-AFN,NO-ERRNO,NOROUNDING %s
  50 //
  51 // RUN: %clang -### -fno-approx-func -ffast-math -c %s 2>&1 \
  52 // RUN:   | FileCheck --check-prefixes=CHECK,FAST,NINF,NNAN,FINITE-ONLY,NSZ,ARCP,AFN,NO-ERRNO,NOROUNDING %s
  53 //
  54 // RUN: %clang -### -fapprox-func -c %s 2>&1 \
  55 // RUN:   | FileCheck --check-prefixes=CHECK,AFN %s
  56 //
  57 // RUN: %clang -### -fno-fast-math -fapprox-func -c %s 2>&1 \
  58 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,AFN,NOROUNDING %s
  59 //
  60 // RUN: %clang -### -fapprox-func -fno-fast-math -c %s 2>&1 \
  61 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NO-AFN %s
  62 //
  63 // RUN: %clang -### -fmath-errno -c %s 2>&1 \
  64 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,ERRNO %s
  65 //
  66 // RUN: %clang -### -fmath-errno -fno-math-errno -c %s 2>&1 \
  67 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO %s
  68 //
  69 // Target defaults for -fmath-errno (reusing the above checks).
  70 // RUN: %clang -### --target=i686-unknown-linux -c %s 2>&1 \
  71 // RUN:   | FileCheck --check-prefixes=CHECK,ERRNO %s
  72 // RUN: %clang -### -target i686-apple-darwin -c %s 2>&1 \
  73 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO %s
  74 // RUN: %clang -### --target=x86_64-unknown-freebsd -c %s 2>&1 \
  75 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO %s
  76 // RUN: %clang -### --target=x86_64-unknown-netbsd -c %s 2>&1 \
  77 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO %s
  78 // RUN: %clang -### --target=x86_64-unknown-openbsd -c %s 2>&1 \
  79 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO %s
  80 // RUN: %clang -### --target=x86_64-unknown-haiku -c %s 2>&1 \
  81 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO %s
  82 // RUN: %clang -### --target=x86_64-unknown-dragonfly -c %s 2>&1 \
  83 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO %s
  84 // RUN: %clang -### --target=x86_64-fuchsia -c %s 2>&1 \
  85 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO %s
  86 // RUN: %clang -### --target=x86_64-linux-android -c %s 2>&1 \
  87 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO %s
  88 // RUN: %clang -### --target=x86_64-linux-musl -c %s 2>&1 \
  89 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO %s
  90 // RUN: %clang -### --target=amdgcn-amd-amdhsa -nogpuinc -nogpulib -c %s 2>&1 \
  91 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO %s
  92 // RUN: %clang -### --target=amdgcn-amd-amdpal -c %s 2>&1 \
  93 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO %s
  94 // RUN: %clang -### --target=amdgcn-mesa-mesa3d -c %s 2>&1   \
  95 // RUN:   | FileCheck --check-prefixes=CHECK,NO-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-prefixes=CHECK,NO-ERRNO %s
 102 // RUN: %clang -### -fmath-errno -ffast-math -c %s 2>&1 \
 103 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO %s
 104 // RUN: %clang -### -ffast-math -fmath-errno -c %s 2>&1 \
 105 // RUN:   | FileCheck --check-prefixes=CHECK,ERRNO %s
 106 // RUN: %clang -### --target=i686-unknown-linux -fno-fast-math -c %s 2>&1 \
 107 // RUN:   | FileCheck --check-prefixes=CHECK,ERRNO %s
 108 // RUN: %clang -### --target=i686-unknown-linux -fno-math-errno -fno-fast-math -c %s 2>&1 \
 109 // RUN:   | FileCheck --check-prefixes=CHECK,ERRNO %s
 110 // RUN: %clang -### -target i686-apple-darwin -fno-fast-math -c %s 2>&1 \
 111 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO %s
 112 // RUN: %clang -### -target i686-apple-darwin -fno-math-errno -fno-fast-math -c %s 2>&1 \
 113 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO %s
 114 // RUN: %clang -### -fno-fast-math -fno-math-errno -c %s 2>&1 \
 115 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO %s
 116 //
 117 // RUN: %clang -### -fno-math-errno -fassociative-math -freciprocal-math \
 118 // RUN:     -fno-signed-zeros -fno-trapping-math -fapprox-func -c %s 2>&1 \
 119 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO,UNSAFE,ARCP,NSZ,NO-TRAPPING,REASSOC %s
 120 //
 121 // RUN: %clang -### -fno-fast-math -fno-math-errno -fassociative-math -freciprocal-math \
 122 // RUN:     -fno-signed-zeros -fno-trapping-math -fapprox-func -c %s 2>&1 \
 123 // RUN:   | FileCheck --check-prefixes=CHECK,NO-ERRNO,UNSAFE,ARCP,NSZ,NO-TRAPPING,REASSOC %s
 124
 125 // The 2nd -fno-fast-math overrides -fassociative-math.
 126
 127 // RUN: %clang -### -fno-fast-math -fno-math-errno -fassociative-math -freciprocal-math \
 128 // RUN:     -fno-fast-math -fno-signed-zeros -fno-trapping-math -c %s 2>&1 \
 129 // RUN:   | FileCheck --check-prefixes=CHECK,NO-UNSAFE,NO-REASSOC,NO-ARCP,NSZ,NO-TRAPPING %s
 130 //
 131 // Check that various umbrella flags also enable these frontend options.
 132 // RUN: %clang -### -ffast-math -c %s 2>&1 \
 133 // RUN:   | FileCheck --check-prefixes=CHECK,FAST,NINF,NNAN,FINITE-ONLY,REASSOC,NSZ,ARCP,AFN,CONTRACT-FAST,NO-ERRNO,NOROUNDING %s
 134 // RUN: %clang -### -ffinite-math-only -c %s 2>&1 \
 135 // RUN:   | FileCheck --check-prefixes=CHECK,NINF,NNAN,FINITE-ONLY %s
 136 // RUN: %clang -### -funsafe-math-optimizations -fno-math-errno -c %s 2>&1 \
 137 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NO-NNAN,NO-NINF,NO-FINITE-ONLY,REASSOC,NSZ,ARCP,AFN,CONTRACT-FAST,NO-ERRNO,NOROUNDING %s
 138 //
 139 // One umbrella flag is *really* weird and also changes the semantics of the
 140 // program by adding a special preprocessor macro. Check that the frontend flag
 141 // modeling this semantic change is provided. Also check that the flag is not
 142 // present if any of the optimizations are disabled.
 143 // RUN: %clang -### -fno-fast-math -ffast-math -c %s 2>&1 \
 144 // RUN:   | FileCheck --check-prefixes=CHECK,FAST,NINF,NNAN,FINITE-ONLY,REASSOC,NSZ,ARCP,AFN,CONTRACT-FAST,NO-ERRNO,NOROUNDING %s
 145 // RUN: %clang -### -funsafe-math-optimizations -ffinite-math-only \
 146 // RUN:     -fno-math-errno -ffp-contract=fast -fno-rounding-math -c %s 2>&1 \
 147 // RUN:   | FileCheck --check-prefixes=CHECK,FAST,NINF,NNAN,FINITE-ONLY,NSZ,ARCP,AFN,CONTRACT-FAST,NO-ERRNO,NOROUNDING %s
 148 // RUN: %clang -### -fno-honor-infinities -fno-honor-nans -fno-math-errno \
 149 // RUN:     -fassociative-math -freciprocal-math -fno-signed-zeros -fapprox-func \
 150 // RUN:     -fno-trapping-math -ffp-contract=fast -fno-rounding-math -c %s 2>&1 \
 151 // RUN:   | FileCheck --check-prefixes=CHECK,FAST,NINF,NNAN,FINITE-ONLY,NSZ,ARCP,AFN,CONTRACT-FAST,NO-ERRNO,NOROUNDING %s
 152 //
 153 // RUN: %clang -### -ffast-math -fno-fast-math -c %s 2>&1 \
 154 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NO-NINF,NO-NNAN,NO-FINITE-ONLY,NO-REASSOC,NO-NSZ,NO-ARCP,NO-AFN,NOROUNDING %s
 155 // RUN: %clang -### -ffast-math -fno-finite-math-only -c %s 2>&1 \
 156 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NO-NINF,NO-NNAN,NO-FINITE-ONLY,REASSOC,NSZ,ARCP,AFN,CONTRACT-FAST,NOROUNDING %s
 157
 158 // FIXME: This case leaves nnan and ninf. That seems wrong!
 159 // RUN: %clang -### -ffast-math -fno-unsafe-math-optimizations -c %s 2>&1 \
 160 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NINF,NNAN,FINITE-ONLY,NO-REASSOC,NO-NSZ,NO-ARCP,NO-AFN,NOROUNDING,NO-TRAPPING %s
 161 // RUN: %clang -### -ffast-math -fmath-errno -c %s 2>&1 \
 162 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NINF,NNAN,FINITE-ONLY,REASSOC,NSZ,ARCP,AFN,CONTRACT-FAST,ERRNO,NOROUNDING %s
 163 // RUN: %clang -### -ffast-math -fno-associative-math -c %s 2>&1 \
 164 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NINF,NNAN,FINITE-ONLY,NO-REASSOC,NSZ,ARCP,AFN,CONTRACT-FAST,NO-ERRNO,NOROUNDING %s
 165 //
 166 // Check various means of disabling these flags, including disabling them after
 167 // they've been enabled via an umbrella flag.
 168 // RUN: %clang -### -fno-honor-infinities -fhonor-infinities -c %s 2>&1 \
 169 // RUN:   | FileCheck --check-prefixes=CHECK,NO-NINF,NO-NNAN,NO-FINITE-ONLY %s
 170 // RUN: %clang -### -ffinite-math-only -fhonor-infinities -c %s 2>&1 \
 171 // RUN:   | FileCheck --check-prefixes=CHECK,NO-NINF,NNAN,NO-FINITE-ONLY %s
 172 // RUN: %clang -### -ffinite-math-only -fno-finite-math-only -c %s 2>&1 \
 173 // RUN:   | FileCheck --check-prefixes=CHECK,NO-NINF,NO-NNAN,NO-FINITE-ONLY %s
 174 // RUN: %clang -### -ffast-math -fhonor-infinities -c %s 2>&1 \
 175 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NO-NINF,NNAN,NO-FINITE-ONLY,REASSOC,NSZ,ARCP,AFN,CONTRACT-FAST,NO-ERRNO,NOROUNDING %s
 176 // RUN: %clang -### -ffast-math -fno-finite-math-only -c %s 2>&1 \
 177 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NO-NINF,NO-NNAN,NO-FINITE-ONLY,REASSOC,NSZ,ARCP,AFN,CONTRACT-FAST,NO-ERRNO,NOROUNDING %s
 178 //
 179 // RUN: %clang -### -fno-honor-nans -fhonor-nans -c %s 2>&1 \
 180 // RUN:   | FileCheck --check-prefixes=CHECK,NO-NINF,NO-NNAN,NO-FINITE-ONLY %s
 181 // RUN: %clang -### -ffinite-math-only -fhonor-nans -c %s 2>&1 \
 182 // RUN:   | FileCheck --check-prefixes=CHECK,NINF,NO-NNAN,NO-FINITE-ONLY %s
 183 // RUN: %clang -### -ffinite-math-only -fno-finite-math-only -c %s 2>&1 \
 184 // RUN:   | FileCheck --check-prefixes=CHECK,NO-NINF,NO-NNAN,NO-FINITE-ONLY %s
 185 // RUN: %clang -### -ffast-math -fhonor-nans -c %s 2>&1 \
 186 // RUN:   | FileCheck --check-prefixes=CHECK,NINF,NO-NNAN,NO-FINITE-ONLY %s
 187 // RUN: %clang -### -ffast-math -fno-finite-math-only -c %s 2>&1 \
 188 // RUN:   | FileCheck --check-prefixes=CHECK,NO-NINF,NO-NNAN,NO-FINITE-ONLY %s
 189
 190 // A later inverted option overrides an earlier option.
 191
 192 // RUN: %clang -### -fassociative-math -freciprocal-math -fno-signed-zeros \
 193 // RUN:     -fno-trapping-math -fno-associative-math -c %s 2>&1 \
 194 // RUN:   | FileCheck --check-prefixes=CHECK,NO-REASSOC,ARCP,NSZ,NO-TRAPPING %s
 195
 196 // RUN: %clang -### -funsafe-math-optimizations -fno-associative-math -c %s 2>&1 \
 197 // RUN:   | FileCheck --check-prefixes=CHECK,NO-UNSAFE,NO-REASSOC,ARCP,NSZ,AFN %s
 198
 199 // RUN: %clang -### -funsafe-math-optimizations -fno-reciprocal-math -c %s 2>&1 \
 200 // RUN:   | FileCheck --check-prefixes=CHECK,NO-UNSAFE,REASSOC,NO-ARCP,NSZ,AFN %s
 201
 202 // reassoc requires nsz
 203 // RUN: %clang -### -funsafe-math-optimizations -fsigned-zeros -c %s 2>&1 \
 204 // RUN:   | FileCheck --check-prefixes=CHECK,NO-UNSAFE,NO-REASSOC,ARCP,NO-NSZ,AFN %s
 205
 206 // FIXME: Shouldn't trapping math disable all unsafe math?
 207 // RUN: %clang -### -funsafe-math-optimizations -ftrapping-math -c %s 2>&1 \
 208 // RUN:   | FileCheck --check-prefixes=CHECK,NO-UNSAFE,ARCP,NSZ,AFN,TRAPPING %s
 209
 210 // RUN: %clang -### -funsafe-math-optimizations -fno-unsafe-math-optimizations \
 211 // RUN:     -c %s 2>&1 \
 212 // RUN:   | FileCheck --check-prefixes=CHECK,NO-UNSAFE,NO-REASSOC,NO-ARCP,NO-NSZ,NO-AFN,NO-TRAPPING %s
 213 // RUN: %clang -### -ffast-math -fno-associative-math -c %s 2>&1 \
 214 // RUN:   | FileCheck --check-prefixes=CHECK,NO-UNSAFE,NO-REASSOC,ARCP,NSZ,AFN %s
 215
 216 // RUN: %clang -### -ffast-math -fno-reciprocal-math -c %s 2>&1 \
 217 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NO-UNSAFE,NNAN,NINF,FINITE-ONLY,REASSOC,NO-ARCP,CONTRACT-FAST,NSZ,AFN %s
 218
 219 // reassoc requires nsz
 220 // RUN: %clang -### -ffast-math -fsigned-zeros -c %s 2>&1 \
 221 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NO-UNSAFE,NNAN,NINF,FINITE-ONLY,NO-REASSOC,ARCP,CONTRACT-FAST,NO-NSZ,AFN %s
 222
 223 // FIXME: Shouldn't trapping math disable unsafe math?
 224 // RUN: %clang -### -ffast-math -ftrapping-math -c %s 2>&1 \
 225 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NO-UNSAFE,ARCP,NSZ,AFN,TRAPPING %s
 226
 227 // RUN: %clang -### -ffast-math -fno-unsafe-math-optimizations -c %s 2>&1 \
 228 // RUN:   | FileCheck --check-prefixes=CHECK,NO-FAST,NO-UNSAFE,NO-ARCP,NO-NSZ,NO-AFN,NO-TRAPPING %s
 229
 230 // Reassociate is allowed because it does not require reciprocal-math.
 231
 232 // RUN: %clang -### -fassociative-math -freciprocal-math -fno-signed-zeros \
 233 // RUN:     -fno-trapping-math -fno-reciprocal-math -c %s 2>&1 \
 234 // RUN:   | FileCheck --check-prefixes=CHECK,REASSOC,NO-ARCP,NSZ,NO-TRAPPING %s
 235
 236
 237 // In these runs, reassociate is not allowed because both no-signed-zeros and no-trapping-math are required.
 238
 239 // RUN: %clang -### -fassociative-math -freciprocal-math -fno-signed-zeros \
 240 // RUN:     -fno-trapping-math -fsigned-zeros -c %s 2>&1 \
 241 // RUN:   | FileCheck --check-prefixes=CHECK,NO-REASSOC,ARCP,NO-NSZ,NO-TRAPPING %s
 242
 243 // RUN: %clang -### -fassociative-math -freciprocal-math -fno-signed-zeros \
 244 // RUN:     -fno-trapping-math -ftrapping-math -c %s 2>&1 \
 245 // RUN:   | FileCheck --check-prefixes=CHECK,NO-REASSOC,ARCP,NSZ,TRAPPING %s
 246
 247 // The checks below allow stringing together prefixes to select the expected
 248 // set of cc1 options for any combination of floating-point options.
 249 // This is based on the assumption that the order of the flags when rendered
 250 // is stable, so the negative checks only need to appear where the option would
 251 // appear if used.
 252
 253 // start marker
 254 // CHECK: "-cc1"
 255
 256 // NO-NINF-NOT:         "-menable-no-infs"
 257 // NINF-SAME:           "-menable-no-infs"
 258
 259 // NO-NNAN-NOT:         "-menable-no-nans"
 260 // NNAN-SAME:           "-menable-no-nans"
 261
 262 // NO-AFN-NOT:          "-fapprox-func"
 263 // AFN-SAME:            "-fapprox-func"
 264
 265 // NO-ERRNO-NOT:        "-fmath-errno"
 266 // ERRNO-SAME:          "-fmath-errno"
 267
 268 // NO-UNSAFE-NOT:       "-funsafe-math-optimizations"
 269 // UNSAFE-SAME:         "-funsafe-math-optimizations"
 270
 271 // NO-NSZ-NOT:          "-fno-signed-zeros"
 272 // NSZ-SAME:            "-fno-signed-zeros"
 273
 274 // NO-REASSOC-NOT:      "-mreassociate"
 275 // REASSOC-SAME:        "-mreassociate"
 276
 277 // NO-ARCP-NOT:         "-freciprocal-math"
 278 // ARCP-SAME:           "-freciprocal-math"
 279
 280 // NO-DENORM-NOT:       "-fdenormal-fp-math"
 281 // DENORM-IEEE-SAME:    "-fdenormal-fp-math=ieee,ieee"
 282 // DENORM-PS-SAME:      "-fdenormal-fp-math=preserve-sign,preserve-sign"
 283 // DENORM-PZ-SAME:      "-fdenormal-fp-math=positive-zero,positive-zero"
 284
 285 // NO-CONTRACT-NOT:     "-ffp-contract"
 286 // CONTRACT-OFF-SAME:   "-ffp-contract=off"
 287 // CONTRACT-ON-SAME:    "-ffp-contract=on"
 288 // CONTRACT-FAST-SAME:  "-ffp-contract=fast"
 289
 290 // This one is odd because -frounding-math is the default
 291 // NO-NOROUNDING-NOT:   "-fno-rounding-math"
 292 // NOROUNDING-SAME:     "-fno-rounding-math"
 293
 294 // NO-TRAPPING-NOT:     "-ffp-exception-behavior=strict"
 295 // NO-TRAPPING-NOT:     "-ffp-exception-behavior=maytrap"
 296 // TRAPPING-SAME:       "-ffp-exception-behavior=strict"
 297
 298 // NO-FAST-NOT:         "-ffast-math"
 299 // FAST-SAME:           "-ffast-math"
 300
 301 // NO-FINITE-ONLY-NOT:  "-ffinite-math-only"
 302 // FINITE-ONLY-SAME:    "-ffinite-math-only"
 303
 304 // NO-CX-RANGE-NOT:     "-complex-range"
 305 // CX-RANGE-FULL-SAME:  "-complex-range=full"
 306 // CX-RANGE-PROMO-SAME: "-complex-range=promoted"
 307 // CX-RANGE-IMPRO-SAME: "-complex-range=improved"
 308 // CX-RANGE-BASIC-SAME: "-complex-range=basic"
 309
 310 // end marker
 311 // CHECK-SAME: "-o"
 312
 313
 314 // This isn't fast-math, but the option is handled in the same place as other FP params.
 315 // Last option wins, and strict behavior is assumed by default.
 316
 317 // RUN: %clang -### -fno-strict-float-cast-overflow -c %s 2>&1 \
 318 // RUN:   | FileCheck --check-prefix=CHECK-FPOV-WORKAROUND %s
 319 // CHECK-FPOV-WORKAROUND: "-cc1"
 320 // CHECK-FPOV-WORKAROUND: "-fno-strict-float-cast-overflow"
 321
 322 // RUN: %clang -### -c %s 2>&1 \
 323 // RUN:   | FileCheck --check-prefix=CHECK-FPOV-WORKAROUND-DEFAULT %s
 324 // CHECK-FPOV-WORKAROUND-DEFAULT: "-cc1"
 325 // CHECK-FPOV-WORKAROUND-DEFAULT-NOT: "strict-float-cast-overflow"
 326
 327 // RUN: %clang -### -fstrict-float-cast-overflow -c %s 2>&1 \
 328 // RUN:   | FileCheck --check-prefix=CHECK-NO-FPOV-WORKAROUND %s
 329 // CHECK-NO-FPOV-WORKAROUND: "-cc1"
 330 // CHECK-NO-FPOV-WORKAROUND-NOT: "strict-float-cast-overflow"
 331
 332 // RUN: %clang -### -fno-strict-float-cast-overflow -fstrict-float-cast-overflow -c %s 2>&1 \
 333 // RUN:   | FileCheck --check-prefix=CHECK-NO-FPOV-WORKAROUND-OVERRIDE %s
 334 // CHECK-NO-FPOV-WORKAROUND-OVERRIDE: "-cc1"
 335 // CHECK-NO-FPOV-WORKAROUND-OVERRIDE-NOT: "strict-float-cast-overflow"
 336