[WebAssembly] Expand symbols shown by llvm-objdump --symbols

[sbc100]

• fix build

[rupprecht]

tools/llvm-readobj/WasmDumper.cpp

207

Looks like there is a #define ENUM_ENTRY(X) pattern at the top of this file, can move this section there and use that pattern?

[sbc100]

• feedback

[dschuff]

Does this affect llvm-objdump or just llvm-readobj, or both (I don't see any tests here with llvm-objdump but the CL description mentions it)

[sbc100]

Sorry, typo in CL title.

test/MC/WebAssembly/basic-assembly.s

 # 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:
     .functype   test0 (i32, i64) -> (i32)
     .eventtype  __cpp_exception i32
     .local      f32, f64, v128, v128
     # Explicit getlocal/setlocal:
     local.get   2

test/MC/WebAssembly/debug-info.ll

 ; CHECK-NEXT:  Section (13) .debug_line {
 ; CHECK-NEXT:    0x2B R_WASM_FUNCTION_OFFSET_I32 f2 0
 ; CHECK-NEXT:  }
 ; CHECK-NEXT:]
 ; CHECK-NEXT:Symbols [
 ; 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
 ; CHECK-NEXT:  }
 ; 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
 ; CHECK-NEXT:  }
 ; 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:]
 
 ; generated from the following C code using: clang --target=wasm32 -g -O0 -S -emit-llvm test.c
 ; extern int myextern;
 ; void f2(void) { return; }
 ;

test/MC/WebAssembly/function-alias.ll

 ; RUN: llc -filetype=obj %s -o - | llvm-readobj -symbols | FileCheck %s
 
 target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
 target triple = "wasm32-unknown-unknown-wasm"
 
 @foo = alias i8, bitcast (i8* ()* @func to i8*)
 @bar = alias i8* (), i8* ()* @func
 
 define i8* @func() {
   ret i8* @foo;
 }
 
 ; CHECK:      Symbols [
 ; 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: ]

tools/llvm-readobj/WasmDumper.cpp

for (const SectionRef &Section : Obj->sections()) {
     }
 
     if (opts::SectionData) {
       W.printBinaryBlock("SectionData", WasmSec.Content);
     }
   }
 }
 
+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) {
     W.printHex("ElementIndex", Symbol.Info.ElementIndex);
   } else if (!(Symbol.Info.Flags & wasm::WASM_SYMBOL_UNDEFINED)) {
     W.printHex("Offset", Symbol.Info.DataRef.Offset);
     W.printHex("Segment", Symbol.Info.DataRef.Segment);
     W.printHex("Size", Symbol.Info.DataRef.Size);