[llvm] [IR][LangRef] Add partial reduction add intrinsic (PR #94499)
Paul Walker via llvm-commits
llvm-commits at lists.llvm.org
Thu Jun 13 07:17:42 PDT 2024
================
@@ -2635,6 +2635,12 @@ def int_vector_deinterleave2 : DefaultAttrsIntrinsic<[LLVMHalfElementsVectorType
[llvm_anyvector_ty],
[IntrNoMem]>;
+//===-------------- Intrinsics to perform partial reduction ---------------===//
+
+def int_experimental_vector_partial_reduce_add : DefaultAttrsIntrinsic<[LLVMMatchType<0>],
+ [llvm_anyvector_ty, llvm_anyvector_ty],
----------------
paulwalker-arm wrote:
Given this is an experimental intrinsic is it worth implementing that plumbing?
Also, the matcher classes typically exist to allow for fewer explicit types when creating a call, which in this instance is not possible because both vector lengths are unknown (or to put another way, there's no 1-1 link between them).
Personally I think there verifier route is better, plus it allow for a more user friendly error message.
https://github.com/llvm/llvm-project/pull/94499
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