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Author SHA1 Message Date
Pete Cooper a3e0be109c Preserve the linkage for objc* intrinsics as clang will set them to weak_external in some cases 
Clang uses weak linkage for objc runtime functions when they are not available on the platform.

The intrinsic has this linkage so we just need to pass that on to the runtime call.

llvm-svn: 349559
 2018-12-18 22:42:08 +00:00
Pete Cooper d0ffdf8782 Add nonlazybind to objc_retain/objc_release when converting from intrinsics. 
For performance reasons, clang set nonlazybind on these functions.  Now that we
are using intrinsics instead of runtime calls, we should set this attribute when
creating the runtime functions.

llvm-svn: 349558
 2018-12-18 22:31:34 +00:00
Pete Cooper f86db5ce9e Rewrite objc intrinsics to runtime methods in PreISelIntrinsicLowering instead of SDAG. 
SelectionDAG currently changes these intrinsics to function calls, but that won't work
for other ISel's.  Also we want to eventually support nonlazybind and weak linkage coming
from the front-end which we can't do in SelectionDAG.

llvm-svn: 349552
 2018-12-18 22:20:03 +00:00