added half2 math operations

1. They use SDWA + LLVM IR
2. Added these functions to test
3. Need to do exp, exp10, log, log10, rint

Change-Id: I06176acc6cb8bb054495310531777406a41b54e4

tests/src/deviceLib/hipTestHalf.cpp

@@ -88,6 +88,21 @@ __global__ void CheckHalf2(hipLaunchParm lp, __half2* In1, __half2* In2, __half2
   Out[7] = __hsub2(In1[7], In2[7]);
   Out[8] = __hsub2_sat(In1[8], In2[8]);
   Out[9] = h2div(In1[9], In2[9]);
+  Out[10] = h2ceil(In1[10]);
+  Out[11] = h2cos(In1[11]);
+//  Out[12] = h2exp(In1[12]);
+//  Out[13] = h2exp10(In1[13]);
+  Out[14] = h2exp2(In1[14]);
+  Out[15] = h2floor(In1[15]);
+//  Out[16] = h2log(In1[16]);
+//  Out[17] = h2log10(In1[17]);
+  Out[18] = h2log2(In1[18]);
+  Out[19] = h2rcp(In1[19]);
+//  Out[20] = h2rint(In1[20]);
+  Out[21] = h2rsqrt(In1[21]);
+  Out[22] = h2sin(In1[22]);
+  Out[23] = h2sqrt(In1[23]);
+  Out[24] = h2trunc(In1[24]);
 }
 
 __global__ void CheckCmpHalf(hipLaunchParm lp, __half* In1, __half* In2, bool* Out) {
@@ -109,6 +124,7 @@ __global__ void CheckCmpHalf2(hipLaunchParm lp, __half2* In1, __half2* In2, __ha
   Out[5] = __hle2(In1[5], In2[5]);
   Out[6] = __hlt2(In1[6], In2[6]);
   Out[7] = __hne2(In1[7], In2[7]);
+
 }
 
 int main(){