RealView Compilation Tools Compiler Reference Guide - ARM ...

Compiler-specific Features
See also
• __ssat on page 4-88
• SSAT and USAT on page 4-96 in the Assembler Guide.
4.7.43 __wfe
This intrinsic inserts a WFE instruction into the instruction stream generated by the
compiler.
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 4-78
• __sev on page 4-87
• __yield on page 4-95
• NOP, SEV, WFE, WFI, and YIELD on page 4-139 in the Assembler Guide.
4.7.44 __wfi
This intrinsic inserts a WFI instruction into the instruction stream generated by the
compiler.
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.
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