On 03/12/17 01:01, J. Gareth Moreton wrote:
The rules of the x86_64 ABI - http://refspecs.linuxbase.org/elf/x86_64-abi-0.21.pdf - page 15-17, specify that the equivalent of a __float128 or __m128 should be split into two classes, with the lower half being SSE and the upper half being SSEUP, hence the two can be merged into a single XMM register.
FPC does not have a way to specify equivalent types of either __float128 or __m128 at this time. FPC needs either a dedicated vector type or an array modifier (similar to "packed") to represent vector types. Otherwise it becomes very muddy regarding which types should be/are treated as vectors and which as plain plain arrays in context of ABI specifications.
Jonas _______________________________________________ fpc-devel maillist - [email protected] http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
