Index: lib/DebugInfo/DWARF/DWARFDebugAbbrev.cpp
===================================================================
--- lib/DebugInfo/DWARF/DWARFDebugAbbrev.cpp
+++ lib/DebugInfo/DWARF/DWARFDebugAbbrev.cpp
@@ -39,7 +39,7 @@
       }
     }
     PrevAbbrCode = AbbrDecl.getCode();
-    Decls.push_back(std::move(AbbrDecl));
+    Decls.push_back(AbbrDecl);
   }
   return BeginOffset != *OffsetPtr;
 }
@@ -82,7 +82,7 @@
     uint32_t CUAbbrOffset = Offset;
     if (!AbbrDecls.extract(Data, &Offset))
       break;
-    AbbrDeclSets[CUAbbrOffset] = std::move(AbbrDecls);
+    AbbrDeclSets[CUAbbrOffset] = AbbrDecls;
   }
 }
 
Index: lib/IRReader/IRReader.cpp
===================================================================
--- lib/IRReader/IRReader.cpp
+++ lib/IRReader/IRReader.cpp
@@ -36,11 +36,12 @@
                 LLVMContext &Context, bool ShouldLazyLoadMetadata) {
   if (isBitcode((const unsigned char *)Buffer->getBufferStart(),
                 (const unsigned char *)Buffer->getBufferEnd())) {
+    auto Indentifier = Buffer->getBufferIdentifier();
     Expected<std::unique_ptr<Module>> ModuleOrErr = getOwningLazyBitcodeModule(
         std::move(Buffer), Context, ShouldLazyLoadMetadata);
     if (Error E = ModuleOrErr.takeError()) {
       handleAllErrors(std::move(E), [&](ErrorInfoBase &EIB) {
-        Err = SMDiagnostic(Buffer->getBufferIdentifier(), SourceMgr::DK_Error,
+        Err = SMDiagnostic(std::move(Indentifier), SourceMgr::DK_Error,
                            EIB.message());
       });
       return nullptr;
Index: lib/Object/Error.cpp
===================================================================
--- lib/Object/Error.cpp
+++ lib/Object/Error.cpp
@@ -91,5 +91,5 @@
             return Error(std::move(M));
           }))
     return Err2;
-  return Err;
+  return Err; // Use after move, not sure how to fix it.
 }
Index: lib/Support/APFloat.cpp
===================================================================
--- lib/Support/APFloat.cpp
+++ lib/Support/APFloat.cpp
@@ -4089,9 +4089,8 @@
   if (usesLayout<IEEEFloat>(Semantics)) {
     new (&IEEE) IEEEFloat(std::move(F));
   } else if (usesLayout<DoubleAPFloat>(Semantics)) {
-    new (&Double)
-        DoubleAPFloat(Semantics, APFloat(std::move(F), F.getSemantics()),
-                      APFloat(IEEEdouble));
+    new (&Double) DoubleAPFloat(Semantics, APFloat(F, F.getSemantics()),
+                                APFloat(IEEEdouble));
   } else {
     llvm_unreachable("Unexpected semantics");
   }
Index: lib/Target/X86/X86ISelLowering.cpp
===================================================================
--- lib/Target/X86/X86ISelLowering.cpp
+++ lib/Target/X86/X86ISelLowering.cpp
@@ -26997,6 +26997,7 @@
   // performs an equivalent shuffle.
   SmallVector<int, 16> WidenedMask;
   while (Mask.size() > 1 && canWidenShuffleElements(Mask, WidenedMask)) {
+    // No use after move, WidenMask reinitialized in canWidenShuffleElements.
     Mask = std::move(WidenedMask);
   }
 
Index: lib/Transforms/Scalar/LoadCombine.cpp
===================================================================
--- lib/Transforms/Scalar/LoadCombine.cpp
+++ lib/Transforms/Scalar/LoadCombine.cpp
@@ -261,7 +261,7 @@
     auto POP = getPointerOffsetPair(*LI);
     if (!POP.Pointer)
       continue;
-    LoadMap[POP.Pointer].push_back({LI, std::move(POP), Index++});
+    LoadMap[POP.Pointer].push_back({LI, POP, Index++});
     AST.add(LI);
   }
   if (combineLoads(LoadMap))
Index: tools/llvm-profdata/llvm-profdata.cpp
===================================================================
--- tools/llvm-profdata/llvm-profdata.cpp
+++ tools/llvm-profdata/llvm-profdata.cpp
@@ -59,8 +59,8 @@
       }
       exitWithError(IPE.message(), Whence, Hint);
     });
+    LLVM_BUILTIN_UNREACHABLE;
   }
-
   exitWithError(toString(std::move(E)), Whence);
 }