use AggressiveInlining in some methods regardless of PROFILING

src/ImageSharp/Common/Helpers/InliningOptions.cs

@@ -12,6 +12,10 @@ namespace SixLabors.ImageSharp
     /// </summary>
     internal static class InliningOptions
     {
+        /// <summary>
+        /// <see cref="MethodImplOptions.AggressiveInlining"/> regardless of the build conditions.
+        /// </summary>
+        public const MethodImplOptions AlwaysInline = MethodImplOptions.AggressiveInlining;
 #if PROFILING
         public const MethodImplOptions HotPath = MethodImplOptions.NoInlining;
         public const MethodImplOptions ShortMethod = MethodImplOptions.NoInlining;

src/ImageSharp/Common/Helpers/SimdUtils.HwIntrinsics.cs

@@ -537,7 +537,7 @@ namespace SixLabors.ImageSharp
             /// <param name="vm0">The first vector to multiply.</param>
             /// <param name="vm1">The second vector to multiply.</param>
             /// <returns>The <see cref="Vector256{T}"/>.</returns>
-            [MethodImpl(InliningOptions.ShortMethod)]
+            [MethodImpl(InliningOptions.AlwaysInline)]
             public static Vector256<float> MultiplyAdd(
                 in Vector256<float> va,
                 in Vector256<float> vm0,

src/ImageSharp/Formats/Jpeg/Components/Decoder/HuffmanScanBuffer.cs

@@ -80,7 +80,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder
         [MethodImpl(InliningOptions.ShortMethod)]
         public bool HasBadMarker() => this.Marker != JpegConstants.Markers.XFF && !this.HasRestartMarker();
 
-        [MethodImpl(InliningOptions.ShortMethod)]
+        [MethodImpl(InliningOptions.AlwaysInline)]
         public void FillBuffer()
         {
             // Attempt to load at least the minimum number of required bits into the buffer.
@@ -130,7 +130,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder
         [MethodImpl(InliningOptions.ShortMethod)]
         public int PeekBits(int nbits) => (int)ExtractBits(this.data, this.remainingBits - nbits, nbits);
 
-        [MethodImpl(InliningOptions.ShortMethod)]
+        [MethodImpl(InliningOptions.AlwaysInline)]
         private static ulong ExtractBits(ulong value, int offset, int size) => (value >> offset) & (ulong)((1 << size) - 1);
 
         [MethodImpl(InliningOptions.ShortMethod)]
@@ -207,7 +207,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder
             }
         }
 
-        [MethodImpl(InliningOptions.ShortMethod)]
+        [MethodImpl(InliningOptions.AlwaysInline)]
         private int ReadStream()
         {
             int value = this.badData ? 0 : this.stream.ReadByte();