[PATCH] D18727: Add support for attribute in the C API

[Amaury SECHET via llvm-commits]

deadalnix added inline comments.

================
Comment at: tools/llvm-c-test/echo.cpp:771-777
@@ -761,1 +770,9 @@
+
+    // Copy attributes
+    for (unsigned k = 0, e = LLVMGetEndAttrKind(); k < e; ++k) {
+      if (LLVMHasFunctionAttr(Cur, k))
+        LLVMAddFunctionAttr(F, k);
+      if (LLVMHasReturnAttr(Cur, k))
+        LLVMAddReturnAttr(F, k);
+    }
 
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I went for the alternative first, namely mapping the attribute set. It was much bigger/more complex, and did not provide any significant advantage in real world use case.

When interacting with attribute, I usually want to check if X has attribute Y, or set attribute Y on X. Rarely do I want to iterate over all attributes (in fact, this test is the only time I ended up doing this).

This test does a lot of wasteful things on purpose in order to grill the C API. I think we are fine here.


http://reviews.llvm.org/D18727