Remove literal overflow error reporting in compiler.

src/common/version.h

 #define MAJOR_VERSION 1
 #define MINOR_VERSION 2
 #define BUILD_VERSION 0
-#define BUILD_REVISION 2444
+#define BUILD_REVISION 2445
 
 #define STRINGIFY(x) #x
 #define MACRO_STRINGIFY(x) STRINGIFY(x)

src/compiler/glslang.y

@@ -228,14 +228,6 @@ primary_expression
         $$ = $1;
     }
     | INTCONSTANT {
-        //
-        // INT_TYPE is only 16-bit plus sign bit for vertex/fragment shaders,
-        // check for overflow for constants
-        //
-        if (abs($1.i) >= (1 << 16)) {
-            context->error(@1, " integer constant overflow", "");
-            context->recover();
-        }
         ConstantUnion *unionArray = new ConstantUnion[1];
         unionArray->setIConst($1.i);
         $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtInt, EbpUndefined, EvqConst), @1);

src/compiler/glslang_tab.cpp

@@ -2298,14 +2298,6 @@ yyreduce:
   case 6:
 
     {
-        //
-        // INT_TYPE is only 16-bit plus sign bit for vertex/fragment shaders,
-        // check for overflow for constants
-        //
-        if (abs((yyvsp[(1) - (1)].lex).i) >= (1 << 16)) {
-            context->error((yylsp[(1) - (1)]), " integer constant overflow", "");
-            context->recover();
-        }
         ConstantUnion *unionArray = new ConstantUnion[1];
         unionArray->setIConst((yyvsp[(1) - (1)].lex).i);
         (yyval.interm.intermTypedNode) = context->intermediate.addConstantUnion(unionArray, TType(EbtInt, EbpUndefined, EvqConst), (yylsp[(1) - (1)]));