[llvm] [AMDGPU] Replace `isInlinableLiteral16` with specific version (PR #81345)

[Shilei Tian via llvm-commits]

================
@@ -97,39 +97,34 @@ define i32 @inline_A_constraint_H1() {
 
 ; NOSI: error: invalid operand for inline asm constraint 'A'
 ; VI-LABEL: {{^}}inline_A_constraint_H2:
-; VI: v_mov_b32 {{v[0-9]+}}, 0x3c00
----------------
shiltian wrote:

No. The instruction is not generated at all.

https://github.com/llvm/llvm-project/pull/81345