From 2c71da39e6144ba9d197aee4d57f294e53381316 Mon Sep 17 00:00:00 2001
From: Eugene Auduchinok <eugene.auduchinok@jetbrains.com>
Date: Thu, 14 Apr 2022 21:32:53 +0500
Subject: [PATCH] IL: use structs for indexes (#12987)

---
 src/fsharp/absil/ilread.fs | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/src/fsharp/absil/ilread.fs b/src/fsharp/absil/ilread.fs
index e1e2dc78a..156c0f90b 100644
--- a/src/fsharp/absil/ilread.fs
+++ b/src/fsharp/absil/ilread.fs
@@ -714,16 +714,38 @@ let simpleIndexCompare (idx1: int) (idx2: int) =
 // The various keys for the various caches.
 //---------------------------------------------------------------------
 
+
+[<Struct>]
 type TypeDefAsTypIdx = TypeDefAsTypIdx of ILBoxity * ILGenericArgs * int
+
+[<Struct>]
 type TypeRefAsTypIdx = TypeRefAsTypIdx of ILBoxity * ILGenericArgs * int
+
+[<Struct>]
 type BlobAsMethodSigIdx = BlobAsMethodSigIdx of numtypars: int * blobIdx: int32
+
+[<Struct>]
 type BlobAsFieldSigIdx = BlobAsFieldSigIdx of numtypars: int * blobIdx: int32
+
+[<Struct>]
 type BlobAsPropSigIdx = BlobAsPropSigIdx of numtypars: int * blobIdx: int32
+
+[<Struct>]
 type BlobAsLocalSigIdx = BlobAsLocalSigIdx of numtypars: int * blobIdx: int32
+
+[<Struct>]
 type MemberRefAsMspecIdx = MemberRefAsMspecIdx of numtypars: int * idx: int
+
+[<Struct>]
 type MethodSpecAsMspecIdx = MethodSpecAsMspecIdx of numtypars: int * idx: int
+
+[<Struct>]
 type MemberRefAsFspecIdx = MemberRefAsFspecIdx of numtypars: int * idx: int
+
+[<Struct>]
 type CustomAttrIdx = CustomAttrIdx of CustomAttributeTypeTag * idx: int * valIdx: int32
+
+[<Struct>]
 type GenericParamsIdx = GenericParamsIdx of numtypars: int * TypeOrMethodDefTag * idx: int
 
 //---------------------------------------------------------------------
-- 
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