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Compiler-specific Features
4.7.41 __wfe
This intrinsic inserts a WFE instruction into the instruction stream generated by the
compiler.
On the v6T2 architecture, the WFE instruction is executed as a NOP instruction.
Syntax
void __wfe(void)
Errors
The compiler does not recognize the __wfe intrinsic when compiling for a target that
does not support the WFE instruction. The compiler generates either a warning or an error
in this case.
See also
• __wfi
• __nop on page 4-89
• __sev on page 4-98
• __yield on page 4-108
• NOP, SEV, WFE, WFI, and YIELD on page 4-142 in the Assembler Guide.
4.7.42 __wfi
This intrinsic inserts a WFI instruction into the instruction stream generated by the
compiler.
On the v6T2 architecture, the WFI instruction is executed as a NOP instruction.
Syntax
void __wfi(void)
Errors
The compiler does not recognize the __wfi intrinsic when compiling for a target that
does not support the WFI instruction. The compiler generates either a warning or an error
in this case.
See also
• __yield on page 4-108
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