Update clang to use the updated LLVM EH instructions

Depends on D15139.

Reviewers: rnk

Differential Revision: http://reviews.llvm.org/D15140

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@255423 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 31 deletions

diff --git a/lib/CodeGen/CGCleanup.cpp b/lib/CodeGen/CGCleanup.cpp
index 5b6e497673..245d6a7e4b 100644
--- a/lib/CodeGen/CGCleanup.cpp
+++ b/lib/CodeGen/CGCleanup.cpp
@@ -246,13 +246,6 @@ void EHScopeStack::pushTerminate() {
   InnermostEHScope = stable_begin();
 }
 
-void EHScopeStack::pushPadEnd(llvm::BasicBlock *PadEndBB) {
-  char *Buffer = allocate(EHPadEndScope::getSize());
-  auto *CES = new (Buffer) EHPadEndScope(InnermostEHScope);
-  CES->setCachedEHDispatchBlock(PadEndBB);
-  InnermostEHScope = stable_begin();
-}
-
 /// Remove any 'null' fixups on the stack.  However, we can't pop more
 /// fixups than the fixup depth on the innermost normal cleanup, or
 /// else fixups that we try to add to that cleanup will end up in the
@@ -909,24 +902,17 @@ void CodeGenFunction::PopCleanupBlock(bool FallthroughIsBranchThrough) {
     // throwing cleanups. For funclet EH personalities, the cleanupendpad models
     // program termination when cleanups throw.
     bool PushedTerminate = false;
-    SaveAndRestore<bool> RestoreIsCleanupPadScope(IsCleanupPadScope);
+    SaveAndRestore<llvm::Instruction *> RestoreCurrentFuncletPad(
+        CurrentFuncletPad);
     llvm::CleanupPadInst *CPI = nullptr;
-    llvm::BasicBlock *CleanupEndBB = nullptr;
     if (!EHPersonality::get(*this).usesFuncletPads()) {
       EHStack.pushTerminate();
       PushedTerminate = true;
     } else {
-      CPI = Builder.CreateCleanupPad({});
-
-      // Build a cleanupendpad to unwind through. Our insertion point should be
-      // in the cleanuppad block.
-      CleanupEndBB = createBasicBlock("ehcleanup.end");
-      CGBuilderTy(*this, CleanupEndBB).CreateCleanupEndPad(CPI, NextAction);
-      EHStack.pushPadEnd(CleanupEndBB);
-
-      // Mark that we're inside a cleanuppad to block inlining.
-      // FIXME: Remove this once the inliner knows when it's safe to do so.
-      IsCleanupPadScope = true;
+      llvm::Value *ParentPad = CurrentFuncletPad;
+      if (!ParentPad)
+        ParentPad = llvm::ConstantTokenNone::get(CGM.getLLVMContext());
+      CurrentFuncletPad = CPI = Builder.CreateCleanupPad(ParentPad);
     }
 
     // We only actually emit the cleanup code if the cleanup is either
@@ -941,17 +927,6 @@ void CodeGenFunction::PopCleanupBlock(bool FallthroughIsBranchThrough) {
     else
       Builder.CreateBr(NextAction);
 
-    // Insert the cleanupendpad block here, if it has any uses.
-    if (CleanupEndBB) {
-      EHStack.popPadEnd();
-      if (CleanupEndBB->hasNUsesOrMore(1)) {
-        CurFn->getBasicBlockList().insertAfter(
-            Builder.GetInsertBlock()->getIterator(), CleanupEndBB);
-      } else {
-        delete CleanupEndBB;
-      }
-    }
-
     // Leave the terminate scope.
     if (PushedTerminate)
       EHStack.popTerminate();