Add a unit test to verifies that attribute uniquing works so it doesn't break again.
The folding set details can be subtle and broke twice in the last couple of weeks.
llvm-svn: 172313
diff --git a/llvm/unittests/IR/AttributesTest.cpp b/llvm/unittests/IR/AttributesTest.cpp
new file mode 100644
index 0000000..627e10f
--- /dev/null
+++ b/llvm/unittests/IR/AttributesTest.cpp
@@ -0,0 +1,34 @@
+//===- llvm/unittest/IR/AttributesTest.cpp - Attributes unit tests --------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/IR/Attributes.h"
+#include "llvm/IR/LLVMContext.h"
+#include "gtest/gtest.h"
+using namespace llvm;
+
+namespace {
+
+TEST(Attributes, Uniquing) {
+ LLVMContext C;
+
+ Attribute AttrA = Attribute::get(C, Attribute::AlwaysInline);
+ Attribute AttrB = Attribute::get(C, Attribute::AlwaysInline);
+ EXPECT_EQ(AttrA, AttrB);
+
+ AttributeWithIndex AWIs[] = {
+ AttributeWithIndex::get(C, 1, Attribute::ZExt),
+ AttributeWithIndex::get(C, 2, Attribute::SExt)
+ };
+
+ AttributeSet SetA = AttributeSet::get(C, AWIs);
+ AttributeSet SetB = AttributeSet::get(C, AWIs);
+ EXPECT_EQ(SetA, SetB);
+}
+
+} // end anonymous namespace