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[AArch64] Expand llvm.histogram intrinsic to support umax, umin, and uadd.sat operations (#138447)

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This patch extends the llvm.histogram intrinsic to support additional
update operations beyond the existing add. Specifically, the new
supported operations are:

* umax: unsigned maximum

* umin: unsigned minimum

* uadd.sat: unsigned saturated addition

Based on the discussion from:


https://discourse.llvm.org/t/rfc-expanding-the-experimental-histogram-intrinsic/84673
This commit is contained in:
RonDahan101
2025-06-11 17:15:24 +03:00
committed by GitHub
parent 76e14deb4a
commit fa9e1a1515
4 changed files with 407 additions and 4 deletions
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3
llvm/docs/LangRef.rst
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@@ -20545,6 +20545,9 @@ More update operation types may be added in the future.
declare void @llvm.experimental.vector.histogram.add.v8p0.i32(<8 x ptr> %ptrs, i32 %inc, <8 x i1> %mask)
declare void @llvm.experimental.vector.histogram.add.nxv2p0.i64(<vscale x 2 x ptr> %ptrs, i64 %inc, <vscale x 2 x i1> %mask)
declare void @llvm.experimental.vector.histogram.uadd.sat.v8p0.i32(<8 x ptr> %ptrs, i32 %inc, <8 x i1> %mask)
declare void @llvm.experimental.vector.histogram.umax.v8p0.i32(<8 x ptr> %ptrs, i32 %val, <8 x i1> %mask)
declare void @llvm.experimental.vector.histogram.umin.v8p0.i32(<8 x ptr> %ptrs, i32 %val, <8 x i1> %mask)
Arguments:
""""""""""