[libcxxabi] Use the right calling convention for exception destructors on i386 Windows
On Windows on i386, C++ member functions use a different calling
convention (`__thiscall`) than the default one for regular functions
(`__cdecl`). (On Windows on architectures other than i386, both calling
convention attributes are no-ops.)
This matches how libstdc++ declares these types.
This fixes the std/thread/futures/futures.{shared,unique}_future/dtor.pass.cpp
tests on i386 mingw.
Differential Revision: https://reviews.llvm.org/D124990
GitOrigin-RevId: aeb4907ed658ad5538f8cd569facae5beaab2940
4 files changed
