[llvm] PreISelIntrinsicLowering: Lower llvm.exp to a loop if scalable vec arg (PR #117568)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,29 @@
+//===- llvm/Transforms/Utils/LowerMathIntrinsics.h --------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Lower math intrinsics with a scalable vector arg to loops.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TRANSFORMS_UTILS_LOWERMATHINTRINSICS_H
+#define LLVM_TRANSFORMS_UTILS_LOWERMATHINTRINSICS_H
+
+#include "llvm/IR/Instructions.h"
+#include "llvm/IR/Module.h"
+#include <cstdint>
+#include <optional>
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arsenm wrote:

Shouldn't need any of these includes, just forward declares 

https://github.com/llvm/llvm-project/pull/117568