[PATCH] D44582: [Builtins] Fix calling long double math functions on x86_64 mingw

[Martin Storsjö via Phabricator via cfe-commits]

mstorsjo added a comment.

In https://reviews.llvm.org/D44582#1040643, @efriedma wrote:

> The backend has code to generate SRet returns, which is used when TargetLowering::CanLowerReturn returns false.  Probably a tiny change to X86CallingConv.td to use that codepath on Windows.


Thanks, I managed to make something that seems to work by tweaking that file, see https://reviews.llvm.org/D44592.


Repository:
  rC Clang

https://reviews.llvm.org/D44582