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Subject:	Re: Clang is using the wrong memory model
To:	cygwin AT cygwin DOT com
References:	<024ce5b5-6024-b371-e382-5eef5d1d4a90 AT agner DOT org> <075477ca-e031-39ea-3dfe-bc8bc2fc8fa6 AT agner DOT org> <20190816082603 DOT GR11632 AT calimero DOT vinschen DOT de> <8d594f4d-17e0-447a-8b18-1ed620815e0f AT agner DOT org> <20190816095200 DOT GU11632 AT calimero DOT vinschen DOT de> <2024f551-66e6-47c5-a0b6-2dfa735a690d AT agner DOT org> <20190816111133 DOT GV11632 AT calimero DOT vinschen DOT de> <6008d30a-cd6c-5449-2933-a041e804856c AT agner DOT org> <20190817081605 DOT GX11632 AT calimero DOT vinschen DOT de> <17081147-f46a-51bf-65e9-3df7748b1780 AT agner DOT org> <20190818115739 DOT GD11632 AT calimero DOT vinschen DOT de>
From:	Agner Fog <agner AT agner DOT org>
Message-ID:	<f2852c05-4f0b-9587-2c4c-bf37485b7455@agner.org>
Date:	Sun, 18 Aug 2019 18:24:18 +0200
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On 18/08/2019 13.57, Corinna Vinschen wrote:
> Nope, Cygwin uses the Windows loader. 

Then, how do you do the extra linking? What is producing the "Cygwin 
runtime failure" message when loading/linking a DLL fails?

>   If the medium model is wasteful in clang, that's a clang
> optimization problem, not a Cygwin problem.

The medium model in Clang is not wasteful. It does exactly what it is 
designed to do. It was never designed with Cygwin in mind. The program 
build with a medium model is wasteful because it makes all addresses 64 
bits when few or no addresses actually need to be 64 bits.

> If you want to use the small model in your own projects, great, if it
> works for you.
It is not for my own project. I am writing manuals on how to optimize 
software.

Agner


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