On Wednesday, 18 November 2020 at 20:35:37 UTC, Elronnd wrote: > You may be interested in ldc.attributes.llvmAttr. > > https://wiki.dlang.org/LDC-specific_language_changes#.40.28ldc.attributes.llvmAttr.28.22key.22.2C_.22value.22.29.29 I already tried llvmAttr("pcs", "aapcs") and llvmAttr("__pcs__", "aapcs"), but nothing changed.