llvm/clang/test/Driver/aarch64-rand.c

// RUN: %clang -### --target=aarch64-none-elf -march=armv8.4a+rng %s 2>&1 | FileCheck %s
// RUN: %clang -### --target=aarch64-none-elf -march=armv8.5a+rng %s 2>&1 | FileCheck %s
// CHECK: "-target-feature" "+rand"

// RUN: %clang -### --target=aarch64-none-elf -mcpu=neoverse-v1+norng %s 2>&1 | FileCheck %s --check-prefix=NORAND
// NORAND: "-target-feature" "-rand"

// RUN: %clang -### --target=aarch64-none-elf                 %s 2>&1 | FileCheck %s --check-prefix=ABSENTRAND
// RUN: %clang -### --target=aarch64-none-elf -march=armv8.4a %s 2>&1 | FileCheck %s --check-prefix=ABSENTRAND
// RUN: %clang -### --target=aarch64-none-elf -march=armv8.5a %s 2>&1 | FileCheck %s --check-prefix=ABSENTRAND
// ABSENTRAND-NOT: "-target-feature" "+rand"
// ABSENTRAND-NOT: "-target-feature" "-rand"