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