[mlir][spirv] Add a canonicalization pattern for UModOp
Add a transformation for a pattern like
%6 = "spirv.Constant"() <{value = 32 : i32}> : () -> i32
%7 = "spirv.UMod"(%5, %6) : (i32, i32) -> i32
%8 = "spirv.Constant"() <{value = 4 : i32}> : () -> i32
%9 = "spirv.UMod"(%7, %8) : (i32, i32) -> i32
to transform to
%6 = "spirv.Constant"() <{value = 32 : i32}> : () -> i32
%7 = "spirv.UMod"(%5, %6) : (i32, i32) -> i32
%8 = "spirv.Constant"() <{value = 4 : i32}> : () -> i32
%9= "spirv.UMod"(%5, %8) : (i32, i32) -> i32
Patch By: nbpatel
Reviewed By: antiagainst, kuhar
Differential Revision: https://reviews.llvm.org/D152341
0e3426f3fe