Index: llvm/lib/MC/MCParser/WasmAsmParser.cpp
===================================================================
--- llvm/lib/MC/MCParser/WasmAsmParser.cpp
+++ llvm/lib/MC/MCParser/WasmAsmParser.cpp
@@ -21,6 +21,7 @@
 #include "llvm/MC/MCParser/MCAsmLexer.h"
 #include "llvm/MC/MCParser/MCAsmParser.h"
 #include "llvm/MC/MCParser/MCAsmParserExtension.h"
+#include "llvm/MC/MCObjectFileInfo.h"
 #include "llvm/MC/MCSectionWasm.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSymbolWasm.h"
@@ -52,6 +53,7 @@
     this->MCAsmParserExtension::Initialize(*Parser);
 
     addDirectiveHandler<&WasmAsmParser::parseSectionDirectiveText>(".text");
+    addDirectiveHandler<&WasmAsmParser::parseSectionDirectiveData>(".data");
     addDirectiveHandler<&WasmAsmParser::parseSectionDirective>(".section");
     addDirectiveHandler<&WasmAsmParser::parseDirectiveSize>(".size");
     addDirectiveHandler<&WasmAsmParser::parseDirectiveType>(".type");
@@ -89,6 +91,12 @@
     return false;
   }
 
+  bool parseSectionDirectiveData(StringRef, SMLoc) {
+    auto *S = getContext().getObjectFileInfo()->getDataSection();
+    getStreamer().SwitchSection(S);
+    return false;
+  }
+
   uint32_t parseSectionFlags(StringRef FlagStr, bool &Passive, bool &Group) {
     uint32_t flags = 0;
     for (char C : FlagStr) {
Index: llvm/test/MC/WebAssembly/basic-assembly.s
===================================================================
--- llvm/test/MC/WebAssembly/basic-assembly.s
+++ llvm/test/MC/WebAssembly/basic-assembly.s
@@ -137,6 +137,9 @@
     .int32      2000000000
     .size       .L.str, 28
 
+    .data
+    .int8       73
+
     .section    .init_array.42,"",@
     .p2align    2
     .int32      test0
@@ -272,6 +275,10 @@
 # CHECK-NEXT:      .int32      2000000000
 # CHECK-NEXT:      .size       .L.str, 28
 
+# CHECK:           .data
+# CHECK-EMPTY:
+# CHECK-NEXT:      .int8       73
+
 # CHECK:           .section    .init_array.42,"",@
 # CHECK-NEXT:      .p2align    2
 # CHECK-NEXT:      .int32      test0