[PATCH] D60349: [COFF, ARM64] Fix ABI implementation of struct returns
Tom Tan via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Wed Apr 24 15:10:47 PDT 2019
TomTan added a comment.
In D60349#1477183 <https://reviews.llvm.org/D60349#1477183>, @efriedma wrote:
> > For NotPod, it is aggregate which is specific in the document
> Yes, it's an aggregate which is returned in registers... but it's returned in integer registers, unlike Pod which is returned in floating-point registers.
`struct Pod` is HFA (Homogenous Floating-Point Aggregates) which is returned in floating-point register, `struct NotPod` is not HFA so still returned in integer registers. The ARM64 ABI document will be updated to reflect this, thanks.
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