[AMDGPU][CodeGen][True16] Track waitcnt as vgpr32 instead of vgpr16 for D16 Instructions in GFX11 (#157795) It seems the VMEM access on hi/lo half could interfere the other half. Track waitcnt of vgpr32 instead of vgpr16 for 16bit reg in GFX11. --------- Co-authored-by: Joe Nash <joseph.nash@amd.com>
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