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Re: bin/47301: Miscompilation by bundled GCC

The following reply was made to PR bin/47301; it has been noted by GNATS.

From: David Laight <>
Subject: Re: bin/47301: Miscompilation by bundled GCC
Date: Mon, 10 Dec 2012 19:48:40 +0000

 On Mon, Dec 10, 2012 at 04:40:04PM +0000, wrote:
 > I wonder what that workaround would do to performance.
 > This sort of reload case could pop up in lots of machine
 > architectures -- any CISC-like machine might be affected.
 > pdp11, 68k, i386, ...
 pdp11 is only 16bit.
 i386 only allows one memory operand (except for special instructions
     with fixed registers.
 m68k does allow memory-memory oparations (if I've read the book properly).
 David Laight:

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