Add asdouble, fma, & mad intrinsics and change profile to allow doubles when parsing prototypes

glslang/Include/intermediate.h

@@ -524,6 +524,7 @@ enum TOperator {
     EOpF16tof32,                         // HLSL conversion: half of an UnpackHalf2x16
     EOpLit,                              // HLSL lighting coefficient vector
     EOpTextureBias,                      // HLSL texture bias: will be lowered to EOpTexture
+    EOpAsDouble,                         // slightly different from EOpUint64BitsToDouble
 };
 
 class TIntermTraverser;