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clang-p2996/clang/test/Driver/fast-math.c
KAWASHIMA Takahiro 3a95d7d098 [clang] Fix -fp-model={strict|precise} to disable -fapprox-func 
`-fapprox-func` should be disabled by `-fp-model={strict|precise}`,
as well as other fast-math flags. See the last changes in
`clang/test/Driver/fp-model.c`.

Probably this route (`case options::OPT_ffp_model_EQ`) was forgot
to update in D106191 and D114564. There is no appropriate reason not
to disable the flag.

This commit also updates other regression tests, which are not directly
related to this bug, for consistency with other fast-math flags.

Differential Revision: https://reviews.llvm.org/D138109
2022-11-22 13:04:26 +09:00

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// Test that the GCC fast-math floating point flags get lowered to the correct
// permutation of Clang frontend flags. This is non-trivial for a few reasons.
// First, the GCC flags have many different and surprising effects. Second,
// LLVM only supports three switches which is more coarse grained than GCC's
// support.
//
// Both of them use gcc driver for as.
//
// RUN: %clang -### -fno-honor-infinities -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-INFS %s
// infinites [sic] is a supported alternative spelling of infinities.
// RUN: %clang -### -fno-honor-infinites -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-INFS %s
// CHECK-NO-INFS: "-cc1"
// CHECK-NO-INFS: "-menable-no-infs"
//
// RUN: %clang -### -fno-fast-math -fno-honor-infinities -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH-NO-INFS %s
// CHECK-NO-FAST-MATH-NO-INFS: "-cc1"
// CHECK-NO-FAST-MATH-NO-INFS: "-menable-no-infs"
//
// RUN: %clang -### -fno-honor-infinities -fno-fast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-INFS-NO-FAST-MATH %s
// CHECK-NO-INFS-NO-FAST-MATH: "-cc1"
// CHECK-NO-INFS-NO-FAST-MATH-NOT: "-menable-no-infs"
//
// RUN: %clang -### -fno-signed-zeros -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-SIGNED-ZEROS %s
// CHECK-NO-SIGNED-ZEROS: "-cc1"
// CHECK-NO-SIGNED-ZEROS: "-fno-signed-zeros"
//
// RUN: %clang -### -fno-fast-math -fno-signed-zeros -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH-NO-SIGNED-ZEROS %s
// CHECK-NO-FAST-MATH-NO-SIGNED-ZEROS: "-cc1"
// CHECK-NO-FAST-MATH-NO-SIGNED-ZEROS: "-fno-signed-zeros"
//
// RUN: %clang -### -fno-signed-zeros -fno-fast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-SIGNED-ZEROS-NO-FAST-MATH %s
// CHECK-NO-SIGNED-ZEROS-NO-FAST-MATH: "-cc1"
// CHECK-NO-SIGNED-ZEROS-NO-FAST-MATH-NOT: "-fno-signed-zeros"
//
// RUN: %clang -### -freciprocal-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-RECIPROCAL-MATH %s
// CHECK-RECIPROCAL-MATH: "-cc1"
// CHECK-RECIPROCAL-MATH: "-freciprocal-math"
//
// RUN: %clang -### -fno-fast-math -freciprocal-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH-RECIPROCAL-MATH %s
// CHECK-NO-FAST-MATH-RECIPROCAL-MATH: "-cc1"
// CHECK-NO-FAST-MATH-RECIPROCAL-MATH: "-freciprocal-math"
//
// RUN: %clang -### -freciprocal-math -fno-fast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-RECIPROCAL-MATH-NO-FAST-MATH %s
// CHECK-RECIPROCAL-MATH-NO-FAST-MATH: "-cc1"
// CHECK-RECIPROCAL-MATH-NO-FAST-MATH-NOT: "-freciprocal-math"
//
// RUN: %clang -### -fno-honor-nans -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-NANS %s
// CHECK-NO-NANS: "-cc1"
// CHECK-NO-NANS: "-menable-no-nans"
//
// RUN: %clang -### -fno-fast-math -fno-honor-nans -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH-NO-NANS %s
// CHECK-NO-FAST-MATH-NO-NANS: "-cc1"
// CHECK-NO-FAST-MATH-NO-NANS: "-menable-no-nans"
//
// RUN: %clang -### -fno-honor-nans -fno-fast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-NANS-NO-FAST-MATH %s
// CHECK-NO-NANS-NO-FAST-MATH: "-cc1"
// CHECK-NO-NANS-NO-FAST-MATH-NOT: "-menable-no-nans"
//
// RUN: %clang -### -ffast-math -fno-approx-func -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-FAST-MATH-NO-APPROX-FUNC %s
// CHECK-FAST-MATH-NO-APPROX-FUNC: "-cc1"
// CHECK-FAST-MATH-NO-APPROX-FUNC: "-menable-no-infs"
// CHECK-FAST-MATH-NO-APPROX-FUNC: "-menable-no-nans"
// CHECK-FAST-MATH-NO-APPROX-FUNC: "-fno-signed-zeros"
// CHECK-FAST-MATH-NO-APPROX-FUNC: "-mreassociate"
// CHECK-FAST-MATH-NO-APPROX-FUNC: "-freciprocal-math"
// CHECK-FAST-MATH-NO-APPROX-FUNC: "-ffp-contract=fast"
// CHECK-FAST-MATH-NO-APPROX-FUNC-NOT: "-ffast-math"
// CHECK-FAST-MATH-NO-APPROX-FUNC-NOT: "-fapprox-func"
//
// RUN: %clang -### -fno-approx-func -ffast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-APPROX-FUNC-FAST-MATH %s
// CHECK-NO-APPROX-FUNC-FAST-MATH: "-cc1"
// CHECK-NO-APPROX-FUNC-FAST-MATH: "-ffast-math"
//
// RUN: %clang -### -fapprox-func -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-APPROX-FUNC %s
// CHECK-APPROX-FUNC: "-cc1"
// CHECK-APPROX-FUNC: "-fapprox-func"
//
// RUN: %clang -### -fno-fast-math -fapprox-func -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH-APPROX-FUNC %s
// CHECK-NO-FAST-MATH-APPROX-FUNC: "-cc1"
// CHECK-NO-FAST-MATH-APPROX-FUNC: "-fapprox-func"
//
// RUN: %clang -### -fapprox-func -fno-fast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-APPROX-FUNC-NO-FAST-MATH %s
// CHECK-APPROX-FUNC-NO-FAST-MATH: "-cc1"
// CHECK-APPROX-FUNC-NO-FAST-MATH-NOT: "-fapprox-func"
//
// RUN: %clang -### -fmath-errno -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-MATH-ERRNO %s
// CHECK-MATH-ERRNO: "-cc1"
// CHECK-MATH-ERRNO: "-fmath-errno"
//
// RUN: %clang -### -fmath-errno -fno-math-errno -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
// CHECK-NO-MATH-ERRNO: "-cc1"
// CHECK-NO-MATH-ERRNO-NOT: "-fmath-errno"
//
// Target defaults for -fmath-errno (reusing the above checks).
// RUN: %clang -### -target i686-unknown-linux -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-MATH-ERRNO %s
// RUN: %clang -### -target i686-apple-darwin -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
// RUN: %clang -### -target x86_64-unknown-freebsd -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
// RUN: %clang -### -target x86_64-unknown-netbsd -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
// RUN: %clang -### -target x86_64-unknown-openbsd -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
// RUN: %clang -### -target x86_64-unknown-dragonfly -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
// RUN: %clang -### -target x86_64-fuchsia -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
// RUN: %clang -### -target x86_64-linux-android -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
// RUN: %clang -### -target x86_64-linux-musl -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
// RUN: %clang -### -target amdgcn-amd-amdhsa -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
// RUN: %clang -### -target amdgcn-amd-amdpal -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
// RUN: %clang -### -target amdgcn-mesa-mesa3d -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
//
// Check that -ffast-math disables -fmath-errno, and -fno-fast-math merely
// preserves the target default. Also check various flag set operations between
// the two flags. (Resuses above checks.)
// RUN: %clang -### -ffast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
// RUN: %clang -### -fmath-errno -ffast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
// RUN: %clang -### -ffast-math -fmath-errno -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-MATH-ERRNO %s
// RUN: %clang -### -target i686-unknown-linux -fno-fast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-MATH-ERRNO %s
// RUN: %clang -### -target i686-unknown-linux -fno-math-errno -fno-fast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-MATH-ERRNO %s
// RUN: %clang -### -target i686-apple-darwin -fno-fast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
// RUN: %clang -### -target i686-apple-darwin -fno-math-errno -fno-fast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
// RUN: %clang -### -fno-fast-math -fno-math-errno -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
//
// RUN: %clang -### -fno-math-errno -fassociative-math -freciprocal-math \
// RUN: -fno-signed-zeros -fno-trapping-math -fapprox-func -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-UNSAFE-MATH %s
// CHECK-UNSAFE-MATH: "-cc1"
// CHECK-UNSAFE-MATH: "-funsafe-math-optimizations"
// CHECK-UNSAFE-MATH: "-mreassociate"
//
// RUN: %clang -### -fno-fast-math -fno-math-errno -fassociative-math -freciprocal-math \
// RUN: -fno-signed-zeros -fno-trapping-math -fapprox-func -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH-UNSAFE-MATH %s
// CHECK-NO-FAST-MATH-UNSAFE-MATH: "-cc1"
// CHECK-NO-FAST-MATH-UNSAFE-MATH: "-funsafe-math-optimizations"
// CHECK-NO-FAST-MATH-UNSAFE-MATH: "-mreassociate"
// The 2nd -fno-fast-math overrides -fassociative-math.
// RUN: %clang -### -fno-fast-math -fno-math-errno -fassociative-math -freciprocal-math \
// RUN: -fno-fast-math -fno-signed-zeros -fno-trapping-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-UNSAFE-MATH-NO-FAST-MATH %s
// CHECK-UNSAFE-MATH-NO-FAST-MATH: "-cc1"
// CHECK-UNSAFE-MATH-NO-FAST-MATH-NOT: "-funsafe-math-optimizations"
// CHECK-UNSAFE-MATH-NO-FAST-MATH-NOT: "-mreassociate"
//
// Check that various umbrella flags also enable these frontend options.
// RUN: %clang -### -ffast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-INFS %s
// RUN: %clang -### -ffast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-NANS %s
// RUN: %clang -### -ffast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-UNSAFE-MATH %s
// RUN: %clang -### -ffinite-math-only -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-INFS %s
// RUN: %clang -### -ffinite-math-only -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-NANS %s
// RUN: %clang -### -funsafe-math-optimizations -fno-math-errno -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-UNSAFE-MATH %s
//
// One umbrella flag is *really* weird and also changes the semantics of the
// program by adding a special preprocessor macro. Check that the frontend flag
// modeling this semantic change is provided. Also check that the flag is not
// present if any of the optimizations are disabled.
// RUN: %clang -### -ffast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-FAST-MATH %s
// RUN: %clang -### -fno-fast-math -ffast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-FAST-MATH %s
// RUN: %clang -### -funsafe-math-optimizations -ffinite-math-only \
// RUN: -fno-math-errno -ffp-contract=fast -fno-rounding-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-FAST-MATH %s
// RUN: %clang -### -fno-honor-infinities -fno-honor-nans -fno-math-errno \
// RUN: -fassociative-math -freciprocal-math -fno-signed-zeros -fapprox-func \
// RUN: -fno-trapping-math -ffp-contract=fast -fno-rounding-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-FAST-MATH %s
// CHECK-FAST-MATH: "-cc1"
// CHECK-FAST-MATH: "-ffast-math"
// CHECK-FAST-MATH: "-ffinite-math-only"
//
// RUN: %clang -### -ffast-math -fno-fast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH %s
// RUN: %clang -### -ffast-math -fno-finite-math-only -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH %s
// RUN: %clang -### -ffast-math -fno-unsafe-math-optimizations -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH %s
// RUN: %clang -### -ffast-math -fmath-errno -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH %s
// RUN: %clang -### -ffast-math -fno-associative-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH --check-prefix=CHECK-ASSOC-MATH %s
// CHECK-NO-FAST-MATH: "-cc1"
// CHECK-NO-FAST-MATH-NOT: "-ffast-math"
// CHECK-ASSOC-MATH-NOT: "-mreassociate"
//
// Check various means of disabling these flags, including disabling them after
// they've been enabled via an umbrella flag.
// RUN: %clang -### -fno-honor-infinities -fhonor-infinities -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-NO-INFS %s
// RUN: %clang -### -ffinite-math-only -fhonor-infinities -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-NO-INFS %s
// RUN: %clang -### -ffinite-math-only -fno-finite-math-only -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-NO-INFS %s
// RUN: %clang -### -ffast-math -fhonor-infinities -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-NO-INFS %s
// RUN: %clang -### -ffast-math -fno-finite-math-only -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-NO-INFS %s
// CHECK-NO-NO-INFS: "-cc1"
// CHECK-NO-NO-INFS-NOT: "-menable-no-infs"
// CHECK-NO-NO-INFS-NOT: "-ffinite-math-only"
// CHECK-NO-NO-INFS: "-o"
//
// RUN: %clang -### -fno-honor-nans -fhonor-nans -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-NO-NANS %s
// RUN: %clang -### -ffinite-math-only -fhonor-nans -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-NO-NANS %s
// RUN: %clang -### -ffinite-math-only -fno-finite-math-only -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-NO-NANS %s
// RUN: %clang -### -ffast-math -fhonor-nans -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-NO-NANS %s
// RUN: %clang -### -ffast-math -fno-finite-math-only -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-NO-NANS %s
// CHECK-NO-NO-NANS: "-cc1"
// CHECK-NO-NO-NANS-NOT: "-menable-no-nans"
// CHECK-NO-NO-NANS-NOT: "-ffinite-math-only"
// CHECK-NO-NO-NANS: "-o"
// A later inverted option overrides an earlier option.
// RUN: %clang -### -fassociative-math -freciprocal-math -fno-signed-zeros \
// RUN: -fno-trapping-math -fno-associative-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s
// RUN: %clang -### -funsafe-math-optimizations -fno-associative-math -c %s \
// RUN: 2>&1 | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s
// RUN: %clang -### -funsafe-math-optimizations -fno-reciprocal-math -c %s \
// RUN: 2>&1 | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s
// RUN: %clang -### -funsafe-math-optimizations -fsigned-zeros -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s
// RUN: %clang -### -funsafe-math-optimizations -ftrapping-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s
// RUN: %clang -### -funsafe-math-optimizations -fno-unsafe-math-optimizations \
// RUN: -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s
// RUN: %clang -### -ffast-math -fno-associative-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s
// RUN: %clang -### -ffast-math -fno-reciprocal-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s
// RUN: %clang -### -ffast-math -fsigned-zeros -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s
// RUN: %clang -### -ffast-math -ftrapping-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s
// RUN: %clang -### -ffast-math -fno-unsafe-math-optimizations -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-UNSAFE-MATH %s
// CHECK-NO-UNSAFE-MATH: "-cc1"
// CHECK-NO-UNSAFE-MATH-NOT: "-funsafe-math-optimizations"
// CHECK-NO_UNSAFE-MATH-NOT: "-mreassociate"
// CHECK-NO-UNSAFE-MATH: "-o"
// Reassociate is allowed because it does not require reciprocal-math.
// RUN: %clang -### -fassociative-math -freciprocal-math -fno-signed-zeros \
// RUN: -fno-trapping-math -fno-reciprocal-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-REASSOC-NO-UNSAFE-MATH %s
// CHECK-REASSOC-NO-UNSAFE-MATH: "-cc1"
// CHECK-REASSOC-NO_UNSAFE-MATH-NOT: "-funsafe-math-optimizations"
// CHECK-REASSOC-NO_UNSAFE-MATH: "-mreassociate"
// CHECK-REASSOC-NO-UNSAFE-MATH-NOT: "-funsafe-math-optimizations"
// CHECK-REASSOC-NO-UNSAFE-MATH: "-o"
// In these runs, reassociate is not allowed because both no-signed-zeros and no-trapping-math are required.
// RUN: %clang -### -fassociative-math -freciprocal-math -fno-signed-zeros \
// RUN: -fno-trapping-math -fsigned-zeros -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-REASSOC-NO-UNSAFE-MATH %s
// RUN: %clang -### -fassociative-math -freciprocal-math -fno-signed-zeros \
// RUN: -fno-trapping-math -ftrapping-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-REASSOC-NO-UNSAFE-MATH %s
// CHECK-NO-REASSOC-NO-UNSAFE-MATH: "-cc1"
// CHECK-NO-REASSOC-NO_UNSAFE-MATH-NOT: "-funsafe-math-optimizations"
// CHECK-NO-REASSOC-NO_UNSAFE-MATH-NOT: "-mreassociate"
// CHECK-NO-REASSOC-NO_UNSAFE-MATH-NOT: "-funsafe-math-optimizations"
// CHECK-NO-REASSOC-NO-UNSAFE-MATH: "-o"
// This isn't fast-math, but the option is handled in the same place as other FP params.
// Last option wins, and strict behavior is assumed by default.
// RUN: %clang -### -fno-strict-float-cast-overflow -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-FPOV-WORKAROUND %s
// CHECK-FPOV-WORKAROUND: "-cc1"
// CHECK-FPOV-WORKAROUND: "-fno-strict-float-cast-overflow"
// RUN: %clang -### -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-FPOV-WORKAROUND-DEFAULT %s
// CHECK-FPOV-WORKAROUND-DEFAULT: "-cc1"
// CHECK-FPOV-WORKAROUND-DEFAULT-NOT: "strict-float-cast-overflow"
// RUN: %clang -### -fstrict-float-cast-overflow -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-FPOV-WORKAROUND %s
// CHECK-NO-FPOV-WORKAROUND: "-cc1"
// CHECK-NO-FPOV-WORKAROUND-NOT: "strict-float-cast-overflow"
// RUN: %clang -### -fno-strict-float-cast-overflow -fstrict-float-cast-overflow -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-FPOV-WORKAROUND-OVERRIDE %s
// CHECK-NO-FPOV-WORKAROUND-OVERRIDE: "-cc1"
// CHECK-NO-FPOV-WORKAROUND-OVERRIDE-NOT: "strict-float-cast-overflow"
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