gcc/testsuite/gcc.target/arm/pragma_cpp_fma.c

/* Test that FMA macro is correctly undef.  */
/* { dg-do compile } */
/* { dg-skip-if "Default no fma" { *-*-* } { "-mfpu=*vfpv4*" "-mfpu=*armv8"} } */
/* { dg-skip-if "-mpure-code supports M-profile without Neon only" { *-*-* } { "-mpure-code" } } */
/* { dg-require-effective-target arm_fp_ok } */
/* { dg-add-options arm_fp } */

/* Reset fpu to a value compatible with the next pragmas.  */
#pragma GCC target ("fpu=vfp")

#pragma GCC push_options
#pragma GCC target ("fpu=crypto-neon-fp-armv8")

#ifndef __ARM_FEATURE_FMA
#error "__ARM_FEATURE_FMA is not defined but should be"
#endif

#ifndef __ARM_FEATURE_CRYPTO
#error "__ARM_FEATURE_CRYPTO is not defined but should be"
#endif

#if __ARM_NEON_FP != 6
#error "__ARM_NEON_FP"
#endif

#if __ARM_FP != 14
#error "__ARM_FP"
#endif

#pragma GCC pop_options

#pragma GCC push_options
#pragma GCC target ("fpu=neon-vfpv4")
#pragma GCC pop_options

#ifdef __ARM_FEATURE_FMA
#error "__ARM_FEATURE_FMA is defined but should not be"
#endif