[llvm] [AMDGPU] Allow rematerialization of instructions with virtual register uses (PR #124327)

[Jeffrey Byrnes via llvm-commits]

================
@@ -84,13 +84,11 @@ body:             |
     %23:vgpr_32 = nofpexcept V_CVT_I32_F64_e32 23, implicit $exec, implicit $mode
 
   bb.1:
-  ; predecessors: %bb.0
----------------
jrbyrnes wrote:

These were auto-deleted by update_mir_test_checks -- not sure why. 

https://github.com/llvm/llvm-project/pull/124327