Index: test/MC/WebAssembly/basic-assembly.s
===================================================================
--- test/MC/WebAssembly/basic-assembly.s
+++ test/MC/WebAssembly/basic-assembly.s
@@ -1,6 +1,6 @@
 # RUN: llvm-mc -triple=wasm32-unknown-unknown -mattr=+unimplemented-simd128,+nontrapping-fptoint,+exception-handling < %s | FileCheck %s
-# this one is just here to see if it converts to .o without errors, but doesn't check any output:
-# RUN: llvm-mc -triple=wasm32-unknown-unknown -filetype=obj -mattr=+unimplemented-simd128,+nontrapping-fptoint,+exception-handling < %s
+# Check that it converts to .o without errors, but don't check any output:
+# RUN: llvm-mc -triple=wasm32-unknown-unknown -filetype=obj -mattr=+unimplemented-simd128,+nontrapping-fptoint,+exception-handling -o %t.o < %s
 
 test0:
     # Test all types:
Index: test/MC/WebAssembly/debug-info.ll
===================================================================
--- test/MC/WebAssembly/debug-info.ll
+++ test/MC/WebAssembly/debug-info.ll
@@ -165,13 +165,17 @@
 ; CHECK-NEXT:  Symbol {
 ; CHECK-NEXT:    Name: f2
 ; CHECK-NEXT:    Type: FUNCTION (0x0)
-; CHECK-NEXT:    Flags: 0x4
+; CHECK-NEXT:    Flags [ (0x4)
+; CHECK-NEXT:      VISIBILITY_HIDDEN (0x4)
+; CHECK-NEXT:    ]
 ; CHECK-NEXT:    ElementIndex: 0x0
 ; CHECK-NEXT:  }
 ; CHECK-NEXT:  Symbol {
 ; CHECK-NEXT:    Name: foo
 ; CHECK-NEXT:    Type: DATA (0x1)
-; CHECK-NEXT:    Flags: 0x4
+; CHECK-NEXT:    Flags [ (0x4)
+; CHECK-NEXT:      VISIBILITY_HIDDEN (0x4)
+; CHECK-NEXT:    ]
 ; CHECK-NEXT:    Offset: 0x0
 ; CHECK-NEXT:    Segment: 0x0
 ; CHECK-NEXT:    Size: 0x4
@@ -179,13 +183,17 @@
 ; CHECK-NEXT:  Symbol {
 ; CHECK-NEXT:    Name: myextern
 ; CHECK-NEXT:    Type: DATA (0x1)
-; CHECK-NEXT:    Flags: 0x10
+; CHECK-NEXT:    Flags [ (0x10)
+; CHECK-NEXT:      UNDEFINED (0x10)
+; CHECK-NEXT:    ]
 ; CHECK-NEXT:    Module:
 ; CHECK-NEXT:  }
 ; CHECK-NEXT:  Symbol {
 ; CHECK-NEXT:    Name: ptr2
 ; CHECK-NEXT:    Type: DATA (0x1)
-; CHECK-NEXT:    Flags: 0x4
+; CHECK-NEXT:    Flags [ (0x4)
+; CHECK-NEXT:      VISIBILITY_HIDDEN (0x4)
+; CHECK-NEXT:    ]
 ; CHECK-NEXT:    Offset: 0x0
 ; CHECK-NEXT:    Segment: 0x1
 ; CHECK-NEXT:    Size: 0x4
@@ -193,25 +201,33 @@
 ; CHECK-NEXT:  Symbol {
 ; CHECK-NEXT:    Name: .debug_str
 ; CHECK-NEXT:    Type: SECTION (0x3)
-; CHECK-NEXT:    Flags: 0x2
+; CHECK-NEXT:    Flags [ (0x2)
+; CHECK-NEXT:      BINDING_LOCAL (0x2)
+; CHECK-NEXT:    ]
 ; CHECK-NEXT:    ElementIndex: 0x6
 ; CHECK-NEXT:  }
 ; CHECK-NEXT:  Symbol {
 ; CHECK-NEXT:    Name: .debug_abbrev
 ; CHECK-NEXT:    Type: SECTION (0x3)
-; CHECK-NEXT:    Flags: 0x2
+; CHECK-NEXT:    Flags [ (0x2)
+; CHECK-NEXT:      BINDING_LOCAL (0x2)
+; CHECK-NEXT:    ]
 ; CHECK-NEXT:    ElementIndex: 0x7
 ; CHECK-NEXT:  }
 ; CHECK-NEXT:  Symbol {
 ; CHECK-NEXT:    Name: .debug_info
 ; CHECK-NEXT:    Type: SECTION (0x3)
-; CHECK-NEXT:    Flags: 0x2
+; CHECK-NEXT:    Flags [ (0x2)
+; CHECK-NEXT:      BINDING_LOCAL (0x2)
+; CHECK-NEXT:    ]
 ; CHECK-NEXT:    ElementIndex: 0x8
 ; CHECK-NEXT:  }
 ; CHECK-NEXT:  Symbol {
 ; CHECK-NEXT:    Name: .debug_line
 ; CHECK-NEXT:    Type: SECTION (0x3)
-; CHECK-NEXT:    Flags: 0x2
+; CHECK-NEXT:    Flags [ (0x2)
+; CHECK-NEXT:      BINDING_LOCAL (0x2)
+; CHECK-NEXT:    ]
 ; CHECK-NEXT:    ElementIndex: 0xC
 ; CHECK-NEXT:  }
 ; CHECK-NEXT:]
Index: test/MC/WebAssembly/function-alias.ll
===================================================================
--- test/MC/WebAssembly/function-alias.ll
+++ test/MC/WebAssembly/function-alias.ll
@@ -14,19 +14,22 @@
 ; CHECK-NEXT:   Symbol {
 ; CHECK-NEXT:     Name: func
 ; CHECK-NEXT:     Type: FUNCTION (0x0)
-; CHECK-NEXT:     Flags: 0x0
+; CHECK-NEXT:     Flags [ (0x0)
+; CHECK-NEXT:     ]
 ; CHECK-NEXT:     ElementIndex: 0x0
 ; CHECK-NEXT:   }
 ; CHECK-NEXT:   Symbol {
 ; CHECK-NEXT:     Name: foo
 ; CHECK-NEXT:     Type: FUNCTION (0x0)
-; CHECK-NEXT:     Flags: 0x0
+; CHECK-NEXT:     Flags [ (0x0)
+; CHECK-NEXT:     ]
 ; CHECK-NEXT:     ElementIndex: 0x0
 ; CHECK-NEXT:   }
 ; CHECK-NEXT:   Symbol {
 ; CHECK-NEXT:     Name: bar
 ; CHECK-NEXT:     Type: FUNCTION (0x0)
-; CHECK-NEXT:     Flags: 0x0
+; CHECK-NEXT:     Flags [ (0x0)
+; CHECK-NEXT:     ]
 ; CHECK-NEXT:     ElementIndex: 0x0
 ; CHECK-NEXT:   }
 ; CHECK-NEXT: ]
Index: tools/llvm-readobj/WasmDumper.cpp
===================================================================
--- tools/llvm-readobj/WasmDumper.cpp
+++ tools/llvm-readobj/WasmDumper.cpp
@@ -204,12 +204,22 @@
   }
 }
 
+static const EnumEntry<unsigned> WasmSymbolFlags[] = {
+  { "BINDING_GLOBAL",     wasm::WASM_SYMBOL_BINDING_GLOBAL },
+  { "BINDING_WEAK",       wasm::WASM_SYMBOL_BINDING_WEAK },
+  { "BINDING_LOCAL",      wasm::WASM_SYMBOL_BINDING_LOCAL },
+  { "VISIBILITY_DEFAULT", wasm::WASM_SYMBOL_VISIBILITY_DEFAULT },
+  { "VISIBILITY_HIDDEN",  wasm::WASM_SYMBOL_VISIBILITY_HIDDEN },
+  { "UNDEFINED",          wasm::WASM_SYMBOL_UNDEFINED },
+};
+
 void WasmDumper::printSymbol(const SymbolRef &Sym) {
   DictScope D(W, "Symbol");
   WasmSymbol Symbol = Obj->getWasmSymbol(Sym.getRawDataRefImpl());
   W.printString("Name", Symbol.Info.Name);
   W.printEnum("Type", Symbol.Info.Kind, makeArrayRef(WasmSymbolTypes));
-  W.printHex("Flags", Symbol.Info.Flags);
+  W.printFlags("Flags", Symbol.Info.Flags, makeArrayRef(WasmSymbolFlags));
+
   if (Symbol.Info.Flags & wasm::WASM_SYMBOL_UNDEFINED)
     W.printString("Module", Symbol.Info.Module);
   if (Symbol.Info.Kind != wasm::WASM_SYMBOL_TYPE_DATA) {