2 Commits

Author	SHA1	Message	Date
Arnold Schwaighofer	bf1638daa8	SjLjEHPrepare: Don't reg-to-mem swifterror values ... swifterror llvm values model the swifterror register as memory at the LLVM IR level. ISel will perform adhoc mem-to-reg on them. swifterror values are constraint in how they can be used. Spilling them to memory is not allowed. SjLjEHPrepare tried to lower swifterror values to memory which is unecessary since the back-end will spill and reload the register as neccessary (as long as clobbering calls are marked as such which is the case here) and further leads to invalid IR because swifterror values can't be stored to memory. rdar://38164004 llvm-svn: 327521	2018-03-14 15:44:07 +00:00
Arnold Schwaighofer	69e74b48f2	SjLjEHPrepare: Fix the pass for swifterror arguments ... We cannot leave the identity copies 'select true, arg, undef' that this pass inserts for arguments to simplify handling of values on swifterror arguments. swifterror arguments have restrictions on their uses. rdar://30839288 llvm-svn: 297197	2017-03-07 20:29:02 +00:00