1 files changed, 9 insertions, 0 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp
index 2fb2327cf67..e32772d491c 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp
@@ -15,6 +15,7 @@
 #include "WebAssemblyUtilities.h"
 #include "WebAssemblyMachineFunctionInfo.h"
 #include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/CodeGen/MachineLoopInfo.h"
 using namespace llvm;
 
 bool WebAssembly::isArgument(const MachineInstr &MI) {
@@ -86,3 +87,11 @@ bool WebAssembly::isCallIndirect(const MachineInstr &MI) {
     return false;
   }
 }
+
+MachineBasicBlock *llvm::LoopBottom(const MachineLoop *Loop) {
+  MachineBasicBlock *Bottom = Loop->getHeader();
+  for (MachineBasicBlock *MBB : Loop->blocks())
+    if (MBB->getNumber() > Bottom->getNumber())
+      Bottom = MBB;
+  return Bottom;
+}