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Compiler Reference Guide
Version 6.15
This function attribute specifies the calling convention on targets with hardware floating-point.
__attribute__((pcs("calling_convention")))
calling_convention
Where calling_convention is one of the following:
aapcs
uses integer registers.
aapcs-vfp
uses floating-point registers.
double foo (float) __attribute__((pcs("aapcs")));
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