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Date: Mon, 25 Jul 2011 21:12:46 -0400 From: Steven Rostedt <rostedt@...dmis.org> To: Arnaud Lacombe <lacombar@...il.com> Cc: Ian Lance Taylor <iant@...gle.com>, gcc-help@....gnu.org, stufever@...il.com, linux-kernel@...r.kernel.org, Wang Shaoyan <wangshaoyan.pt@...bao.com>, Frederic Weisbecker <fweisbec@...il.com>, Ingo Molnar <mingo@...hat.com> Subject: Re: [PATCH] TRACING: Fix a copmile warning On Mon, 2011-07-25 at 21:08 -0400, Arnaud Lacombe wrote: > Hi, > > but the code generated seem to test %esi (`b', potentially > uninitialized) before %ebx (`a'). Am I still missing something ? But it tests 'a' again afterward. If 'a' is 0, it doesn't matter what 'b' was. So the uninitialized test is a wash. No harm done, except for some wasted CPU cycles. -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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