diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -782,6 +782,7 @@
       return VariableDie;
     const DIExpression *Expr = DV.getSingleExpression();
     assert(Expr && "Variadic Debug Value must have an Expression.");
+
     DIELoc *Loc = new (DIEValueAllocator) DIELoc;
     DIEDwarfExpression DwarfExpr(*Asm, *this, *Loc);
     DwarfExpr.addFragmentOffset(Expr);
@@ -789,7 +790,7 @@
     const TargetRegisterInfo &TRI = *Asm->MF->getSubtarget().getRegisterInfo();
 
     auto AddEntry = [&](const DbgValueLocEntry &Entry,
-                                            DIExpressionCursor &Cursor) {
+                        DIExpressionCursor &Cursor) {
       if (Entry.isLocation()) {
         if (!DwarfExpr.addMachineRegExpression(TRI, Cursor,
                                                Entry.getLoc().getReg()))
@@ -799,9 +800,13 @@
         DwarfExpr.addUnsignedConstant(Entry.getInt());
       } else if (Entry.isConstantFP()) {
         APInt RawBytes = Entry.getConstantFP()->getValueAPF().bitcastToAPInt();
+        if (RawBytes.getBitWidth() > 64)
+          return false;
         DwarfExpr.addUnsignedConstant(RawBytes);
       } else if (Entry.isConstantInt()) {
         APInt RawBytes = Entry.getConstantInt()->getValue();
+        if (RawBytes.getBitWidth() > 64)
+          return false;
         DwarfExpr.addUnsignedConstant(RawBytes);
       } else if (Entry.isTargetIndexLocation()) {
         TargetIndexLocation Loc = Entry.getTargetIndexLocation();
diff --git a/llvm/test/DebugInfo/X86/pr52584.ll b/llvm/test/DebugInfo/X86/pr52584.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/DebugInfo/X86/pr52584.ll
@@ -0,0 +1,27 @@
+; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu -o /dev/null
+
+define dso_local void @test() !dbg !4 {
+entry:
+  call void @llvm.dbg.value(metadata !DIArgList(i128 0), metadata !8, metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_stack_value, DW_OP_LLVM_fragment, 0, 127)), !dbg !13
+  ret void, !dbg !13
+}
+
+declare void @llvm.dbg.value(metadata, metadata, metadata)
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!2, !3}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
+!1 = !DIFile(filename: "test.c", directory: "")
+!2 = !{i32 7, !"Dwarf Version", i32 4}
+!3 = !{i32 2, !"Debug Info Version", i32 3}
+!4 = distinct !DISubprogram(name: "test", scope: !5, file: !5, line: 1, type: !6, unit: !0)
+!5 = !DIFile(filename: "/usr/local/google/home/rickyz/l/pr52333/n.c", directory: "")
+!6 = !DISubroutineType(types: !7)
+!7 = !{null}
+!8 = !DILocalVariable(name: "arr", scope: !4, file: !5, line: 1, type: !9)
+!9 = !DICompositeType(tag: DW_TAG_array_type, baseType: !10, size: 128, elements: !11)
+!10 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
+!11 = !{!12}
+!12 = !DISubrange(count: 16)
+!13 = !DILocation(line: 1, column: 1, scope: !4)