The CATCHRET operand did not match the MachineFunction's CFG. This
mismatch happened because FrameLowering created a new MachineBasicBlock
and updated the CFG but forgot to update the CATCHRET operand.
Let's make sure this doesn't happen again by strengthing the funclet
membership analysis: it can now reason about the membership of all basic
blocks, not just those inside of funclets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@249344 91177308-0d34-0410-b5e6-96231b3b80d8
Track which basic blocks belong to which funclets. Permit branch
folding to fire but only if it can prove that doing so will not cause
code in one funclet to be reused in another.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@249257 91177308-0d34-0410-b5e6-96231b3b80d8
BranchFolding would merge two funclets together, this is not OK.
Disable this and strengthen the assertion in FuncletLayout.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@249069 91177308-0d34-0410-b5e6-96231b3b80d8
Catchret transfers control from a catch funclet to an earlier funclet.
However, it is not completely clear which funclet the catchret target is
part of. Make this clear by stapling the catchret target's funclet
membership onto the CATCHRET SDAG node.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@249052 91177308-0d34-0410-b5e6-96231b3b80d8
We shifted the MachineBasicBlocks to the end of the MachineFunction in
DFS order. This will not ensure that MachineBasicBlocks which fell
through to one another will remain contiguous. Instead, implement
a stable sort algorithm for iplist.
This partially reverts commit r214150.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@247978 91177308-0d34-0410-b5e6-96231b3b80d8
