Bug 1234985 - Odin: use VarU32 for integer literals (r=bbouvier)

--HG--
extra : commitid : BjaDFHi36gP

js/src/asmjs/AsmJS.cpp

@@ -2772,7 +2772,7 @@ class MOZ_STACK_CLASS FunctionValidator
     }
     MOZ_WARN_UNUSED_RESULT
     bool writeInt32Lit(int32_t i32) {
-        return writeOp(Expr::I32Const) && encoder().writeI32(i32);
+        return writeOp(Expr::I32Const) && encoder().writeVarU32(i32);
     }
 
     MOZ_WARN_UNUSED_RESULT

js/src/asmjs/WasmIonCompile.cpp

@@ -1314,7 +1314,7 @@ EmitLiteral(FunctionCompiler& f, ExprType type, MDefinition**def)
 {
     switch (type) {
       case ExprType::I32: {
-        int32_t val = f.readI32();
+        int32_t val = f.readVarU32();
         *def = f.constant(Int32Value(val), MIRType_Int32);
         return true;
       }