ConstantFolding: Avoid a crash.
Summary:
Check if the parent basic block and caller exists
before calling CS.getCaller when constant folding
strip.invariant.group instrinsic.
This avoids a crash when the function containing the intrinsic
is being inlined. The instruction is checked for any simplifiction
but has not yet been added to a basic block.
Reviewers: Prazek, rsmith, efriedma
Reviewed By: efriedma
Subscribers: eraman, llvm-commits
Differential Revision: https://reviews.llvm.org/D49690
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337742
91177308-0d34-0410-b5e6-
96231b3b80d8
OSDN Git Service
