[wasm] Add I64Eqz operator.

src/wasm/wasm-macro-gen.h

Index: src/wasm/wasm-macro-gen.h
diff --git a/src/wasm/wasm-macro-gen.h b/src/wasm/wasm-macro-gen.h
index 045d81aa09663c8913d240e1b2ec4ad3c3186213..d9199e82fb39369e31bcc42b87b07bd03053a302 100644
--- a/src/wasm/wasm-macro-gen.h
+++ b/src/wasm/wasm-macro-gen.h
@@ -399,6 +399,7 @@ class LocalDeclEncoder {
 #define WASM_I32_CLZ(x) kExprI32Clz, x
 #define WASM_I32_CTZ(x) kExprI32Ctz, x
 #define WASM_I32_POPCNT(x) kExprI32Popcnt, x
+#define WASM_I32_EQZ(x) kExprI32Eqz, x
 
 //------------------------------------------------------------------------------
 // Int64 operations
@@ -431,6 +432,7 @@ class LocalDeclEncoder {
 #define WASM_I64_CLZ(x) kExprI64Clz, x
 #define WASM_I64_CTZ(x) kExprI64Ctz, x
 #define WASM_I64_POPCNT(x) kExprI64Popcnt, x
+#define WASM_I64_EQZ(x) kExprI64Eqz, x
 
 //------------------------------------------------------------------------------
 // Float32 operations