[llvm] [AMDGPU][GlobalISel] Add register bank legalize rules for amdgcn_icmp, amdgcn_fcmp and amdgcn_ballot. (PR #172017)

[Petar Avramovic via llvm-commits]

petar-avramovic wrote:

There is no test for amdgcn_icmp, I'm pretty sure that {IntrId, Vcc, Vcc} would not work but need to check in detail.
Also why not separate amdgcn_icmp and ballot?


https://github.com/llvm/llvm-project/pull/172017