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-rw-r--r--include/llvm/Support/Compiler.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/llvm/Support/Compiler.h b/include/llvm/Support/Compiler.h
index 0defe698b6..da31f98628 100644
--- a/include/llvm/Support/Compiler.h
+++ b/include/llvm/Support/Compiler.h
@@ -29,6 +29,18 @@
#define ATTRIBUTE_USED
#endif
+#ifdef __GNUC__ // aka 'ATTRIBUTE_CONST' but following LLVM Conventions.
+#define ATTRIBUTE_READNONE __attribute__((__const__))
+#else
+#define ATTRIBUTE_READNONE
+#endif
+
+#ifdef __GNUC__ // aka 'ATTRIBUTE_PURE' but following LLVM Conventions.
+#define ATTRIBUTE_READONLY __attribute__((__pure__))
+#else
+#define ATTRIBUTE_READONLY
+#endif
+
#if (__GNUC__ >= 4)
#define BUILTIN_EXPECT(EXPR, VALUE) __builtin_expect((EXPR), (VALUE))
#else