[clang] [CIR] Upstream Inline Asm with Input Operands (PR #176239)

[Andy Kaylor via cfe-commits]

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@@ -343,11 +420,111 @@ mlir::LogicalResult CIRGenFunction::emitAsmStmt(const AsmStmt &s) {
       readOnly = readNone = false;
     }
 
-    if (info.isReadWrite())
-      assert(!cir::MissingFeatures::asmInputOperands());
+    if (info.isReadWrite()) {
+      inOutConstraints += ',';
+      const Expr *inputExpr = s.getOutputExpr(i);
+
+      auto [arg, argElementType] =
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andykaylor wrote:

Maybe a comment here indicating what the types are?

https://github.com/llvm/llvm-project/pull/176239