From 97a00b7b20832cdf9d426f1911c8ac5bd67f040d Mon Sep 17 00:00:00 2001
From: Andrea Di Biagio <andrea.dibiagio@sony.com>
Date: Wed, 24 Mar 2021 11:20:15 +0000
Subject: [PATCH] [MCA] Fix for uninitialised member in constructor. NFC

---
 llvm/include/llvm/MCA/HardwareUnits/RegisterFile.h | 4 +++-
 llvm/lib/MCA/HardwareUnits/RegisterFile.cpp        | 3 ++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/llvm/include/llvm/MCA/HardwareUnits/RegisterFile.h b/llvm/include/llvm/MCA/HardwareUnits/RegisterFile.h
index 735ed7470280..510cff4b5934 100644
--- a/llvm/include/llvm/MCA/HardwareUnits/RegisterFile.h
+++ b/llvm/include/llvm/MCA/HardwareUnits/RegisterFile.h
@@ -45,7 +45,9 @@ class WriteRef {
   static const unsigned INVALID_IID;
 
 public:
-  WriteRef() : IID(INVALID_IID), WriteBackCycle(), WriteResID(), Write() {}
+  WriteRef()
+      : IID(INVALID_IID), WriteBackCycle(), WriteResID(), RegisterID(),
+        Write() {}
   WriteRef(unsigned SourceIndex, WriteState *WS);
 
   unsigned getSourceIndex() const { return IID; }
diff --git a/llvm/lib/MCA/HardwareUnits/RegisterFile.cpp b/llvm/lib/MCA/HardwareUnits/RegisterFile.cpp
index eface5b37118..a48915dbed73 100644
--- a/llvm/lib/MCA/HardwareUnits/RegisterFile.cpp
+++ b/llvm/lib/MCA/HardwareUnits/RegisterFile.cpp
@@ -25,7 +25,8 @@ namespace mca {
 const unsigned WriteRef::INVALID_IID = std::numeric_limits<unsigned>::max();
 
 WriteRef::WriteRef(unsigned SourceIndex, WriteState *WS)
-    : IID(SourceIndex), WriteBackCycle(), WriteResID(), Write(WS) {}
+    : IID(SourceIndex), WriteBackCycle(), WriteResID(), RegisterID(),
+      Write(WS) {}
 
 void WriteRef::commit() {
   assert(Write && Write->isExecuted() && "Cannot commit before write back!");