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This topic describes instruction intrinsics for realizing ARM machine language instructions from C or C++ code.
Table 9-7 Instruction intrinsics that the ARM compiler supports
__breakpoint
__cdp
__clrex
__clz
__current_pc
__current_sp
__disable_fiq
__disable_irq
__dmb
__dsb
__enable_fiq
__enable_irq
__fabs
__fabsf
__force_loads
__force_stores
__isb
__ldrex
__ldrexd
__ldrt
__memory_changed
__nop
__pld
__pldw
__pli
__promise
__qadd
__qdbl
__qsub
__rbit
__return_address
__rev
__ror
__schedule_barrier
__semihost
__sev
__sqrt
__sqrtf
__ssat
__strex
__strexd
__strt
__swp
__usat
__wfe
__wfi
__yield
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