Added type conversion intrinsics

1. Added all type conversion intrinsics
2. NO TESTS have been added. (Will add in next commit)
3. Sanatized code in hip_runtime.h
4. Added passed() to hipTestHalf to make it pass on HIT

Change-Id: I0987963c802fc7ff4d7e07d7b88d86da35da53c9

src/device_functions.cpp

@@ -19,38 +19,342 @@ THE SOFTWARE.
 
 #include <hip/device_functions.h>
 
-extern "C" float __hip_int_as_float(int);
+struct holder64Bit{
+  union{
+    double d;
+    unsigned long int uli;
+    signed long int sli;
+    signed int si[2];
+    unsigned int ui[2];
+  };
+} __attribute__((aligned(8)));
 
-typedef struct {
-  signed int hi;
-  signed int lo;
-} __hip_signed_2;
+struct holder32Bit {
+  union {
+    float f;
+    unsigned int ui;
+    signed int si;
+  };
+} __attribute__((aligned(4)));
 
-typedef struct {
-union {
-  double d;
-  long long int lli;
-  __hip_signed_2 s2;
-} ;
-} __hip_64bit_struct;
+struct holder64Bit hold64;
+struct holder32Bit hold32;
 
-typedef struct {
-union {
-  float f;
-  unsigned int ui;
-  signed int si;
-};
-} __hip_32bit_struct;
-
-__device__ float __int_as_float (int x) {
-  __hip_32bit_struct s;
-  s.si = x;
-  return s.f;
+__device__ float __double2float_rd(double x)
+{
+  return (double)x;
+}
+__device__ float __double2float_rn(double x)
+{
+  return (double)x;
+}
+__device__ float __double2float_ru(double x)
+{
+  return (double)x;
+}
+__device__ float __double2float_rz(double x)
+{
+  return (double)x;
 }
 
-__device__ double __hiloint2double (int hi, int lo) {
-  __hip_64bit_struct s;
-  s.s2.hi = hi;
-  s.s2.lo = lo;
-  return s.d;
+
+__device__ int __double2hiint(double x)
+{
+  hold64.d = x;
+  return hold64.si[1];
+}
+__device__ int __double2loint(double x)
+{
+  hold64.d = x;
+  return hold64.si[0];
+}
+
+
+__device__ int __double2int_rd(double x)
+{
+  return (int)x;
+}
+__device__ int __double2int_rn(double x)
+{
+  return (int)x;
+}
+__device__ int __double2int_ru(double x)
+{
+  return (int)x;
+}
+__device__ int __double2int_rz(double x)
+{
+  return (int)x;
+}
+
+__device__ long long int __double2ll_rd(double x)
+{
+  return (long long int)x;
+}
+__device__ long long int __double2ll_rn(double x)
+{
+  return (long long int)x;
+}
+__device__ long long int __double2ll_ru(double x)
+{
+  return (long long int)x;
+}
+__device__ long long int __double2ll_rz(double x)
+{
+  return (long long int)x;
+}
+
+
+__device__ unsigned int __double2uint_rd(double x)
+{
+  return (unsigned int)x;
+}
+__device__ unsigned int __double2uint_rn(double x)
+{
+  return (unsigned int)x;
+}
+__device__ unsigned int __double2uint_ru(double x)
+{
+  return (unsigned int)x;
+}
+__device__ unsigned int __double2uint_rz(double x)
+{
+  return (unsigned int)x;
+}
+
+__device__ unsigned long long int __double2ull_rd(double x)
+{
+  return (unsigned long long int)x;
+}
+__device__ unsigned long long int __double2ull_rn(double x)
+{
+  return (unsigned long long int)x;
+}
+__device__ unsigned long long int __double2ull_ru(double x)
+{
+  return (unsigned long long int)x;
+}
+__device__ unsigned long long int __double2ull_rz(double x)
+{
+  return (unsigned long long int)x;
+}
+
+__device__ long long int __double_as_longlong(double x)
+{
+  hold64.d = x;
+  return hold64.sli;
+}
+
+__device__ int float2int_rd(float x)
+{
+  return (int)x;
+}
+__device__ int float2int_rn(float x)
+{
+  return (int)x;
+}
+__device__ int float2int_ru(float x)
+{
+  return (int)x;
+}
+__device__ int float2int_rz(float x)
+{
+  return (int)x;
+}
+
+__device__ long long int __float2ll_rd(float x)
+{
+  return (long long int)x;
+}
+__device__ long long int __float2ll_rn(float x)
+{
+  return (long long int)x;
+}
+__device__ long long int __float2ll_ru(float x)
+{
+  return (long long int)x;
+}
+__device__ long long int __float2ll_rz(float x)
+{
+  return (long long int)x;
+}
+
+__device__ unsigned int __float2uint_rd(float x)
+{
+  return (unsigned int)x;
+}
+__device__ unsigned int __float2uint_rn(float x)
+{
+  return (unsigned int)x;
+}
+__device__ unsigned int __float2uint_ru(float x)
+{
+  return (unsigned int)x;
+}
+__device__ unsigned int __float2uint_rz(float x)
+{
+  return (unsigned int)x;
+}
+
+__device__ unsigned long long int __float2ull_rd(float x)
+{
+  return (unsigned long long int)x;
+}
+__device__ unsigned long long int __float2ull_rn(float x)
+{
+  return (unsigned long long int)x;
+}
+__device__ unsigned long long int __float2ull_ru(float x)
+{
+  return (unsigned long long int)x;
+}
+__device__ unsigned long long int __float2ull_rz(float x)
+{
+  return (unsigned long long int)x;
+}
+
+__device__ int __float_as_int(float x)
+{
+  hold32.f = x;
+  return hold32.si;
+}
+__device__ unsigned int __float_as_uint(float x)
+{
+  hold32.f = x;
+  return hold32.ui;
+}
+__device__ double __hiloint2double(int hi, int lo)
+{
+  hold64.si[1] = hi;
+  hold64.si[0] = lo;
+  return hold64.d;
+}
+__device__ double __int2double_rn(int x)
+{
+  return (double)x;
+}
+
+__device__ float __int2float_rd(int x)
+{
+  return (float)x;
+}
+__device__ float __int2float_rn(int x)
+{
+  return (float)x;
+}
+__device__ float __int2float_ru(int x)
+{
+  return (float)x;
+}
+__device__ float __int2float_rz(int x)
+{
+  return (float)x;
+}
+
+__device__ float __int_as_float(int x)
+{
+  hold32.si = x;
+  return hold32.f;
+}
+
+__device__ double __ll2double_rd(long long int x)
+{
+  return (double)x;
+}
+__device__ double __ll2double_rn(long long int x)
+{
+  return (double)x;
+}
+__device__ double __ll2double_ru(long long int x)
+{
+  return (double)x;
+}
+__device__ double __ll2double_rz(long long int x)
+{
+  return (double)x;
+}
+
+__device__ float __ll2float_rd(long long int x)
+{
+  return (float)x;
+}
+__device__ float __ll2float_rn(long long int x)
+{
+  return (float)x;
+}
+__device__ float __ll2float_ru(long long int x)
+{
+  return (float)x;
+}
+__device__ float __ll2float_rz(long long int x)
+{
+  return (float)x;
+}
+
+__device__ double __longlong_as_double(long long int x)
+{
+  hold64.sli = x;
+  return hold64.d;
+}
+
+__device__ double __uint2double_rn(int x)
+{
+  return (double)x;
+}
+
+__device__ float __uint2float_rd(unsigned int x)
+{
+  return (float)x;
+}
+__device__ float __uint2float_rn(unsigned int x)
+{
+  return (float)x;
+}
+__device__ float __uint2float_ru(unsigned int x)
+{
+  return (float)x;
+}
+__device__ float __uint2float_rz(unsigned int x)
+{
+  return (float)x;
+}
+
+__device__ float __uint_as_float(unsigned int x)
+{
+  hold32.ui = x;
+  return hold32.f;
+}
+
+__device__ double __ull2double_rd(unsigned long long int x)
+{
+  return (double)x;
+}
+__device__ double __ull2double_rn(unsigned long long int x)
+{
+  return (double)x;
+}
+__device__ double __ull2double_ru(unsigned long long int x)
+{
+  return (double)x;
+}
+__device__ double __ull2double_rz(unsigned long long int x)
+{
+  return (double)x;
+}
+
+__device__ float __ull2float_rd(unsigned long long int x)
+{
+  return (float)x;
+}
+__device__ float __ull2float_rn(unsigned long long int x)
+{
+  return (float)x;
+}
+__device__ float __ull2float_ru(unsigned long long int x)
+{
+  return (float)x;
+}
+__device__ float __ull2float_rz(unsigned long long int x)
+{
+  return (float)x;
 }