Fix the order of function attributes in auto-generated file IntrinsicGenISA.gen. Python code generator was nondeterministic, potentially generating different code for the same input.

Change-Id: I7043ef38784c167c2713f175fe25e9c12365a976

Author: mmerecki

IGC/GenISAIntrinsics/Intrinsics.py

@@ -90,13 +90,18 @@
     "InaccessibleMemOnly": set(["NoUnwind","InaccessibleMemOnly"]),
 }
 
+# order taken from IntrinsicEmitter::EmitAttributes to match attribute order used for llvm intrinsics
+attribute_order = ("NoUnwind", "NoReturn", "NoDuplicate", "Convergent", "ReadNone", "ReadOnly", "ArgMemOnly", "InaccessibleMemOnly")
+
 def getAttributeList(Attrs):
     """
     Takes a list of attribute names, calculates the union,
     and returns a list of the the given attributes
     """
     s = reduce(lambda acc, v: attribute_map[v] | acc, Attrs, set())
-    return ['Attribute::'+x for x in s]
+    # sort attributes to generate the same code each time
+    l = sorted(list(s), key=attribute_order.index)
+    return ['Attribute::'+x for x in l]
 
 Intrinsics = dict()
 parse = sys.argv