Date: Fri, 2 Sep 2005 15:32:53 -0400 From: John Baldwin <jhb@FreeBSD.org> To: current@FreeBSD.org Cc: powerpc@FreeBSD.org, alpha@FreeBSD.org Subject: [PATCH] Cleanup asm constraints in atomic operations Message-ID: <200509021532.54579.jhb@FreeBSD.org>
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alc@ brought to my attention a while back that while gcc allows one to use the '+' constraint modifier to collapse identical input and output operands that are in registers, it is only allowed for registers and not for memory operands. The patch below removes uses of the '+' modifier in conjunction with memory operands in the atomic operations for alpha, amd64, i386, and powerpc. Please test and let me know if there are any regressions. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.orghelp
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