[clang] [CIR] Add inline function attributes (PR #162866)

[Andy Kaylor via cfe-commits]

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@@ -1623,6 +1624,12 @@ mlir::LogicalResult CIRToLLVMFuncOpLowering::matchAndRewrite(
 
   assert(!cir::MissingFeatures::opFuncMultipleReturnVals());
 
+  // Add inline_kind attribute with "cir." prefix so amendOperation handles it
+  if (auto inlineKind = op.getInlineKind()) {
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andykaylor wrote:

Why not just set the `no_inline`, `always_inline`, or `inline_hint` attribute here? It looks like LLVMFuncOp doesn't have an `inline_hint` attribute at the moment, but that should be fixed.

https://github.com/llvm/llvm-project/pull/162866