[AMDGPU][True16][CodeGen] Support AND/OR/XOR and LDEXP True16 format (#102620)
Support AND/OR/XOR true16 and LDEXP true/fake16 format.
These instructions are previously implemented with fake16 profile.
Fixing the implementation.
Added a RA hint so that when using 16bit register in a 32bit
instruction, try to use the register directly without an extra 16bit
move
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Co-authored-by: guochen2 <guochen2@amd.com>