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-rw-r--r--test/Driver/Ofast.c20
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diff --git a/test/Driver/Ofast.c b/test/Driver/Ofast.c
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+// RUN: %clang -Ofast -### %s 2>&1 | FileCheck -check-prefix=CHECK-OFAST %s
+// RUN: %clang -fno-fast-math -Ofast -### %s 2>&1 | FileCheck -check-prefix=CHECK-OFAST %s
+// RUN: %clang -fno-strict-aliasing -Ofast -### %s 2>&1 | FileCheck -check-prefix=CHECK-OFAST %s
+// RUN: %clang -Ofast -fno-fast-math -### %s 2>&1 | FileCheck -check-prefix=CHECK-OFAST-NO-FAST-MATH %s
+// RUN: %clang -Ofast -fno-strict-aliasing -### %s 2>&1 | FileCheck -check-prefix=CHECK-OFAST-NO-STRICT-ALIASING %s
+
+// CHECK-OFAST: -cc1
+// CHECK-OFAST-NOT: -relaxed-aliasing
+// CHECK-OFAST: -ffast-math
+// CHECK-OFAST: -Ofast
+
+// CHECK-OFAST-NO-FAST-MATH: -cc1
+// CHECK-OFAST-NO-FAST-MATH-NOT: -relaxed-aliasing
+// CHECK-OFAST-NO-FAST-MATH-NOT: -ffast-math
+// CHECK-OFAST-NO-FAST-MATH: -Ofast
+
+// CHECK-OFAST-NO-STRICT-ALIASING: -cc1
+// CHECK-OFAST-NO-STRICT-ALIASING: -relaxed-aliasing
+// CHECK-OFAST-NO-STRICT-ALIASING: -ffast-math
+// CHECK-OFAST-NO-STRICT-ALIASING: -Ofast