[driver] Add support for the -fno-fast-math option.
rdar://12299433
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164638 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Driver/fast-math.c b/test/Driver/fast-math.c
index 8426f09..17bf6ed 100644
--- a/test/Driver/fast-math.c
+++ b/test/Driver/fast-math.c
@@ -12,16 +12,46 @@
// 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-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 -### -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 -### -fno-fast-math -fmath-errno -c %s 2>&1 \
+// RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH-MATH-ERRNO %s
+// CHECK-NO-FAST-MATH-MATH-ERRNO: "-cc1"
+// CHECK-NO-FAST-MATH-MATH-ERRNO: "-fmath-errno"
+//
+// RUN: %clang -### -fmath-errno -fno-fast-math -c %s 2>&1 \
+// RUN: | FileCheck --check-prefix=CHECK-MATH-ERRNO-NO-FAST-MATH %s
+// CHECK-MATH-ERRNO-NO-FAST-MATH: "-cc1"
+// CHECK-MATH-ERRNO-NO-FAST-MATH-NOT: "-fmath-errno"
+//
// RUN: %clang -### -fmath-errno -fno-math-errno -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NO-MATH-ERRNO %s
// RUN: %clang -### -target i686-apple-darwin -c %s 2>&1 \
@@ -43,6 +73,18 @@
// CHECK-UNSAFE-MATH: "-cc1"
// CHECK-UNSAFE-MATH: "-menable-unsafe-fp-math"
//
+// RUN: %clang -### -fno-fast-math -fno-math-errno -fassociative-math -freciprocal-math \
+// RUN: -fno-signed-zeros -fno-trapping-math -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: "-menable-unsafe-fp-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: "-menable-unsafe-fp-math"
+//
// 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
@@ -63,12 +105,19 @@
// impact remains even if every optimization is 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 -### -ffast-math -fno-finite-math-only \
// RUN: -fno-unsafe-math-optimizations -fmath-errno -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-FAST-MATH %s
// CHECK-FAST-MATH: "-cc1"
// CHECK-FAST-MATH: "-ffast-math"
//
+// RUN: %clang -### -ffast-math -fno-fast-math -c %s 2>&1 \
+// RUN: | FileCheck --check-prefix=CHECK-NO-FAST-MATH %s
+// CHECK-NO-FAST-MATH: "-cc1"
+// CHECK-NO-FAST-MATH-NOT: "-ffast-math"
+//
// 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 \