Summary:
When we don't actually have stack-allocated variables but need SP only
to support EH, we don't need to write SP back in the epilog, because we
don't bump down the stack pointer.
Reviewers: dschuff
Subscribers: jgravelle-google, sbc100, sunfish, llvm-commits
Differential Revision: https://reviews.llvm.org/D51114
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@340454 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
After the stack is unwound due to a thrown exception, the
`__stack_pointer` global can point to an invalid address. This inserts
instructions that restore `__stack_pointer` global.
Reviewers: jgravelle-google, dschuff
Subscribers: mgorny, sbc100, sunfish, llvm-commits
Differential Revision: https://reviews.llvm.org/D50980
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@340339 91177308-0d34-0410-b5e6-96231b3b80d8
