Article View: comp.std.c
Article #662Re: volatile required?
From: David T. Sandberg
Date: Wed, 04 Oct 1989 09:17
Date: Wed, 04 Oct 1989 09:17
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1379 bytes
In article <756@crdos1.crd.ge.COM> davidsen@crdos1.UUCP (bill davidsen) writes:
:In article <16785@watdragon.waterloo.edu>, afscian@violet.waterloo.edu (Anthony Scian) writes:
:| NO. This is a convenient type of oversight that allows so called
:| "optimizing compilers" like Turbo C and Microsoft C to squeeze
:| out extra performance from benchmarks.
:
: I wrote a reply saying that MSC v4.85 and later didn't do this.
:Someone replied that if certainly did, if you use the -Oa option.
For the record, MSC 5.1 produces the correct results from the
original program snippet (4) even when compiling with either
the -Oa or the -Ox switch.
--
David Sandberg - Quadric Systems
"I began neglecting my shoes." PSEUDO: dts@quad.uucp
ACTUAL: ..uunet!rosevax!sialis!quad!dts
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!gem.mps.ohio-state.edu!uakari.primate.wisc.edu!dogie.macc.wisc.edu!uwvax!umn-d-ub!umn-cs!nis!quad!dts From: dts@quad.uucp (David T. Sandberg) Newsgroups: comp.std.c Subject: Re: volatile required? Message-ID: <299@quad.uucp> Date: 4 Oct 89 09:17:22 GMT References: <712@Aragorn.dde.dk> <16785@watdragon.waterloo.edu> <756@crdos1.crd.ge.COM> Reply-To: dts@quad.uucp (David T. Sandberg) Organization: Quadric Systems, Richfield MN Lines: 17