================
@@ -1722,6 +1722,11 @@ def int_debugtrap : Intrinsic<[]>,
def int_ubsantrap : Intrinsic<[], [llvm_i8_ty],
[IntrNoReturn, IntrCold, ImmArg<ArgIndex<0>>]>;
+// Return true if profile counter for containing block is hot.
+def int_experimental_hot : Intrinsic<[llvm_i1_ty], [],
+ [IntrInaccessibleMemOnly, IntrWriteMem,
----------------
dvyukov wrote:
Can't IntrWriteMem have significant effect on performance of the generated
code? Why exactly do we need it? A comment would be useful. It's not writing to
memory, is there a more precise attribute to capture what we need?
https://github.com/llvm/llvm-project/pull/84850
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