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Compiler-specific Features
opcode2
Is a coprocessor-specific opcode.
Usage
The use of these instructions depends on the coprocessor. See your coprocessor
documentation for more information.
See also
• CDP and CDP2 on page 4-124 in the Assembler Guide.
4.7.3 __clrex
This intrinsic inserts a CLREX instruction into the instruction stream generated by the
compiler. It enables you to include a CLREX instruction in your C or C++ code.
Syntax
void __clrex(void)
Errors
The compiler does not recognize the __clrex intrinsic when compiling for a target that
does not support the CLREX instruction. The compiler generates either a warning or an
error in this case.
See also
• CLREX on page 4-39 in the Assembler Guide.
4.7.4 __clz
This intrinsic inserts a CLZ instruction or an equivalent code sequence into the
instruction stream generated by the compiler. It enables you to count the number of
leading zeros of a data value in your C or C++ code.
Syntax
unsigned char __clz(unsigned int val)
Where:
val
is an unsigned int.
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