[llvm] [X86][GlobalISel] Enable G_SDIV/G_UDIV/G_SREM/G_UREM (PR #81615)

[Simon Pilgrim via llvm-commits]

https://github.com/RKSimon commented:

Should we be losing the legalize tests (although maybe we should be merging 32/64 bit targets - no i64 divrem on x86 tests atm)? The select tests I don't find as much use for (and the isel-* tests are better to identify poor codegen IMO)

https://github.com/llvm/llvm-project/pull/81615