[clang] [CIR] Allow boolean operands in cir.cmp (PR #206846)

[Erich Keane via cfe-commits]

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@@ -2949,6 +2949,16 @@ mlir::LogicalResult CIRToLLVMCmpOpLowering::matchAndRewrite(
     return mlir::success();
   }
 
+  if (mlir::isa<cir::BoolType>(type)) {
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erichkeane wrote:

Am I missing something, or are a bunch of the below operations all identical?  

Can we combine the 2 pointertype ones and this all with a `mlir::isa<cir::BoolType, cir::PointerType, cir::VPtrType>(type)` as the 'if'?  Or am I missin ga difference between them? 

https://github.com/llvm/llvm-project/pull/206846