1 files changed, 24 insertions, 0 deletions

diff --git a/contrib/llvm-project/llvm/lib/CodeGen/PHIEliminationUtils.h b/contrib/llvm-project/llvm/lib/CodeGen/PHIEliminationUtils.h
new file mode 100644
index 000000000000..0ff3a41f47d3
--- /dev/null
+++ b/contrib/llvm-project/llvm/lib/CodeGen/PHIEliminationUtils.h
@@ -0,0 +1,24 @@
+//=- PHIEliminationUtils.h - Helper functions for PHI elimination -*- C++ -*-=//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_CODEGEN_PHIELIMINATIONUTILS_H
+#define LLVM_LIB_CODEGEN_PHIELIMINATIONUTILS_H
+
+#include "llvm/CodeGen/MachineBasicBlock.h"
+
+namespace llvm {
+    /// findPHICopyInsertPoint - Find a safe place in MBB to insert a copy from
+    /// SrcReg when following the CFG edge to SuccMBB. This needs to be after
+    /// any def of SrcReg, but before any subsequent point where control flow
+    /// might jump out of the basic block.
+    MachineBasicBlock::iterator
+    findPHICopyInsertPoint(MachineBasicBlock* MBB, MachineBasicBlock* SuccMBB,
+                           unsigned SrcReg);
+}
+
+#endif