Add IsFinished arg to EmitBlock.
- Indicates that caller is done with the block and it can be dropped
if it has no predecessors. Useful for callers who need to make
landing pads but which may not be reached.
No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59207 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGStmt.cpp b/lib/CodeGen/CGStmt.cpp
index a66b6fe..ad081c9 100644
--- a/lib/CodeGen/CGStmt.cpp
+++ b/lib/CodeGen/CGStmt.cpp
@@ -157,9 +157,15 @@
return EmitAnyExpr(cast<Expr>(LastStmt), AggLoc);
}
-void CodeGenFunction::EmitBlock(llvm::BasicBlock *BB) {
+void CodeGenFunction::EmitBlock(llvm::BasicBlock *BB, bool IsFinished) {
// Fall out of the current block (if necessary).
EmitBranch(BB);
+
+ if (IsFinished && BB->use_empty()) {
+ delete BB;
+ return;
+ }
+
CurFn->getBasicBlockList().push_back(BB);
Builder.SetInsertPoint(BB);
}