Add HIP_INIT_ALLOC to init allocated memory.

hipamd/src/hip_hcc.cpp

@@ -88,6 +88,8 @@ int HIP_HOST_COHERENT = 1;
 
 int HIP_SYNC_HOST_ALLOC = 1;
 
+int HIP_INIT_ALLOC=-1;
+
 
 #if (__hcc_workweek__ >= 17300)
 // Make sure we have required bug fix in HCC
@@ -267,8 +269,6 @@ ihipStream_t::ihipStream_t(ihipCtx_t *ctx, hc::accelerator_view av, unsigned int
         case hipDeviceScheduleBlockingSync  : _scheduleMode = Yield; break;
         default:_scheduleMode = Auto;
     };
-
-
 };
 
 
@@ -1248,6 +1248,7 @@ void HipReadEnv()
     READ_ENV_I(release, HIP_FAIL_SOC, 0, "Fault on Sub-Optimal-Copy, rather than use a slower but functional implementation.  Bit 0x1=Fail on async copy with unpinned memory.  Bit 0x2=Fail peer copy rather than use staging buffer copy");
 
     READ_ENV_I(release, HIP_SYNC_HOST_ALLOC, 0, "Sync before and after all host memory allocations.  May help stability");
+    READ_ENV_I(release, HIP_INIT_ALLOC, 0, "If not -1, initialize allocated memory to specified byte");
     READ_ENV_I(release, HIP_SYNC_NULL_STREAM, 0, "Synchronize on host for null stream submissions");