[Bug other/10109] documentation of target macro LIBCALL_VALUE

[a dot cilio at et dot tudelft dot nl]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=10109



------- Additional Comments From a dot cilio at et dot tudelft dot nl  2003-08-01 15:44 -------
Unlike stated in previous comment, I think that aggregate function return values
are a concern for library support functions. Aggregate return values occur in
library support functions that return a double-precision floating-point value
when the target architecture does not have a register class for double precision
floating-point values. In such situations, the macros that describe the target
architecture can specify that the doubles are passed/retuned as aggregates.
This appears to work correctly for normal compiled C functions.