Cherry-pick r247546: [mips] Save a copy of MipsABIInfo ...

[mips] Save a copy of MipsABIInfo in the MipsTargetStreamer to escape a
dangling pointer

The MipsTargetELFStreamer can receive ABI info from many sources. For example,
from the MipsAsmParser instance. Lifetime of the MipsAsmParser can be shorter
than MipsTargetELFStreamer's lifetime. In that case we get a dangling pointer
to MipsABIInfo.

Differential Revision: http://reviews.llvm.org/D12805

Change-Id: Ic3dbb02fb3e71cf6bccebc2eed5b9fd8eb247816
Reviewed-on: https://chromium-review.googlesource.com/435139
Reviewed-by: Derek Schuff <dschuff@chromium.org>
1 file changed