================
@@ -1858,6 +1858,40 @@ def FuncOp : CIR_Op<"func", [
// CallOp
//===----------------------------------------------------------------------===//
+def SE_All : I32EnumAttrCase<"All", 1, "all">;
+def SE_Pure : I32EnumAttrCase<"Pure", 2, "pure">;
+def SE_Const : I32EnumAttrCase<"Const", 3, "const">;
+
+def SideEffect
+ : I32EnumAttr<
+ "SideEffect",
+ "allowed side effects of a function", [SE_All, SE_Pure, SE_Const]> {
+ let description = [{
+ The side effect attribute specifies the possible side effects of the callee
+ of a call operation. This is an enumeration attribute and all possible
+ enumerators are:
+
+ - all: The callee can have any side effects. This is the default if no side
+ effects are explicitly listed.
+ - pure: The callee may read data from memory, but it cannot write data to
----------------
Lancern wrote:
I like the idea to extend this attribute beyond memory effects to model more
stuff that could be called "side effects". `errno` could be a good extension,
maybe we could even encode whether the callee throws into this attribute.
https://github.com/llvm/llvm-project/pull/144201
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