Inference of the 'returned' attribute was fixed in r276008, lets try
turning the backend support back on.
This reverts commit r275677.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276081 91177308-0d34-0410-b5e6-96231b3b80d8
r275042 reverted function-attribute inference for the 'returned' attribute
because the feature triggered self-hosting failures on ARM and AArch64. James
Molloy determined that the this-return argument forwarding feature, which
directly ties the returned input argument to the returned value, was the cause.
It seems likely that this forwarding code contains, or triggers, a subtle bug.
Disabling for now until we can track that down.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275677 91177308-0d34-0410-b5e6-96231b3b80d8
I'm really not sure why we were in the first place, it's the linker's job to
convert between BL/BLX as necessary. Even worse, using BLX left Thumb calls
that could be locally resolved completely unencodable since all offsets to BLX
are multiples of 4.
rdar://26182344
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269101 91177308-0d34-0410-b5e6-96231b3b80d8
This option is from 2010, designed to work around a linker issue on Darwin for
ARM. According to grosbach this is no longer an issue and this option can
safely be removed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203576 91177308-0d34-0410-b5e6-96231b3b80d8
