fix-issue-1007(3) More precise narrowing: WHCNK < 700M.
fix-issue-1007(3) More precise narrowing: WHCNK < 700M.

ROCmSoftwarePlatform/MIOpen,ROCmSoftwarePlatform/MIOpen,ROCmSoftwarePlatform/MIOpen,ROCmSoftwarePlatform/MIOpen,ROCmSoftwarePlatform/MIOpen