[WinEH] Sink UnwindHelp completely out of IR

We don't need to represent UnwindHelp in IR.  Instead, we can use the
knowledge that we are emitting the parent function to decide if we
should create the UnwindHelp stack object.

llvm-svn: 234061

1 files changed, 0 insertions, 7 deletions

diff --git a/llvm/lib/IR/Verifier.cpp b/llvm/lib/IR/Verifier.cpp
index 15e354b8dfc..accd5cd8940 100644
--- a/llvm/lib/IR/Verifier.cpp
+++ b/llvm/lib/IR/Verifier.cpp
@@ -3230,13 +3230,6 @@ void Verifier::visitIntrinsicFunctionCall(Intrinsic::ID ID, CallInst &CI) {
     break;
   }
 
-  case Intrinsic::eh_unwindhelp: {
-    auto *AI = dyn_cast<AllocaInst>(CI.getArgOperand(0)->stripPointerCasts());
-    Assert(AI && AI->isStaticAlloca(),
-           "llvm.eh.unwindhelp requires a static alloca", &CI);
-    break;
-  }
-
   case Intrinsic::experimental_gc_statepoint:
     Assert(!CI.isInlineAsm(),
            "gc.statepoint support for inline assembly unimplemented", &CI);