diff options
Diffstat (limited to 'sysdeps/arm/atomic-machine.h')
| -rw-r--r-- | sysdeps/arm/atomic-machine.h | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/sysdeps/arm/atomic-machine.h b/sysdeps/arm/atomic-machine.h index 2a89a73f5b..12551bc4db 100644 --- a/sysdeps/arm/atomic-machine.h +++ b/sysdeps/arm/atomic-machine.h @@ -53,7 +53,7 @@ void __arm_link_error (void); /* Use the atomic builtins provided by GCC in case the backend provides a pattern to do this efficiently. */ -#if __GNUC_PREREQ (4, 7) && defined __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 +#ifdef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 # define atomic_exchange_acq(mem, value) \ __atomic_val_bysize (__arch_exchange, int, mem, value, __ATOMIC_ACQUIRE) @@ -131,16 +131,12 @@ void __arm_link_error (void); # define __arch_compare_and_exchange_val_64_int(mem, newval, oldval, model) \ ({__arm_link_error (); oldval; }) -#elif defined __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 -/* Atomic compare and exchange. */ -# define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \ - __sync_val_compare_and_swap ((mem), (oldval), (newval)) #else # define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \ __arm_assisted_compare_and_exchange_val_32_acq ((mem), (newval), (oldval)) #endif -#if !__GNUC_PREREQ (4, 7) || !defined (__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) +#ifndef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 /* We don't support atomic operations on any non-word types. So make them link errors. */ # define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \ |