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<div class="moz-cite-prefix">On 03/16/2017 08:11 PM, Eric
Christopher wrote:<br>
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<div dir="ltr">On Thu, Mar 16, 2017 at 5:45 PM Hal Finkel <<a
moz-do-not-send="true" href="mailto:hfinkel@anl.gov">hfinkel@anl.gov</a>>
wrote:<br>
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<div class="m_-6314143797133193542moz-cite-prefix
gmail_msg">On 03/16/2017 07:40 PM, Eric Christopher
wrote:<br class="gmail_msg">
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<div dir="ltr" class="gmail_msg">On Thu, Mar 16,
2017 at 5:37 PM Hal Finkel via Phabricator <<a
moz-do-not-send="true"
href="mailto:reviews@reviews.llvm.org"
class="gmail_msg" target="_blank">reviews@reviews.llvm.org</a>>
wrote:<br class="gmail_msg">
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<blockquote class="gmail_quote gmail_msg"
style="margin:0 0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">hfinkel added a comment.<br
class="gmail_msg">
<br class="gmail_msg">
In <a moz-do-not-send="true"
href="https://reviews.llvm.org/D30415#703398"
rel="noreferrer" class="gmail_msg"
target="_blank">https://reviews.llvm.org/D30415#703398</a>,
@echristo wrote:<br class="gmail_msg">
<br class="gmail_msg">
> Different suggestion:<br class="gmail_msg">
><br class="gmail_msg">
> Remove the faltivec option. Even gcc doesn't
support it anymore afaict.<br class="gmail_msg">
<br class="gmail_msg">
<br class="gmail_msg">
What are you suggesting? Always having the
language extensions on? Or explicitly tying the
language extensions to the underlying target
feature?<br class="gmail_msg">
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<div class="gmail_msg">I was thinking the latter.</div>
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<div bgcolor="#FFFFFF" text="#000000" class="gmail_msg"> Is
that what GCC now does?<br class="gmail_msg">
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<div>That would be my guess given the option isn't listed
anymore, but what it does is this:</div>
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<div>echristo@dzur ~/s/gcc-git> grep -r faltivec *</div>
<div>gcc/testsuite/gcc.target/powerpc/stabs-attrib-vect-darwin.c:/*
{ dg-options "-gstabs+ -fno-eliminate-unused-debug-types
-faltivec" } */</div>
<div>gcc/testsuite/ChangeLog-1993-2007:<span class="Apple-tab-span" style="white-space:pre"> </span>*
g++.dg/ext/altivec-8.C: Use '-maltivec' instead of
'-faltivec';</div>
<div>gcc/config/rs6000/darwin.h: the kernel or some such.
The "-faltivec" option should have been</div>
<div>gcc/config/rs6000/darwin.h: %{faltivec:-maltivec
-include altivec.h} %{fno-altivec:-mno-altivec} \</div>
<div>gcc/config/rs6000/darwin.h: %<faltivec
%<fno-altivec " \</div>
<div>gcc/config/rs6000/darwin.opt:faltivec</div>
<div>gcc/ChangeLog-2003:<span class="Apple-tab-span" style="white-space:pre"> </span>-maltivec
is specified, not the non-existent -faltivec.</div>
<div>gcc/ChangeLog-2010:<span class="Apple-tab-span" style="white-space:pre"> </span>*
config/rs6000/darwin.h (CC1_SPEC): Handle -faltivec and
-fno-altivec.</div>
<div>gcc/ChangeLog-2010:<span class="Apple-tab-span" style="white-space:pre"> </span>*
config/rs6000/darwin.opt (Waltivec-long-deprecated,
faltivec,</div>
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<div>and only on darwin. I don't see anything that treats
the faltivec alias as anything language specific anywhere.
It basically just says "pass the include and turn on
maltivec".<br>
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<div>At this point I'm pretty sure that -faltivec can just be
ignored.</div>
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<br>
It is certainly fair to say that having the ability to use
-fno-altivec was much more important when -faltivec included
altivec.h (which injected names like vec_add into the global
namespace). I'm fine with enabling the vector syntax extensions when
targeting altivec is enabled (they're extensions to extensions
anyway).<br>
<br>
-Hal<br>
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<div>-eric</div>
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-Hal</div>
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<div class="gmail_msg">-eric</div>
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<blockquote class="gmail_quote gmail_msg"
style="margin:0 0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex"> > (Go ahead and commit
the zvector part if you'd like).<br
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><br class="gmail_msg">
> -eric<br class="gmail_msg">
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<a moz-do-not-send="true"
href="https://reviews.llvm.org/D30415"
rel="noreferrer" class="gmail_msg"
target="_blank">https://reviews.llvm.org/D30415</a><br
class="gmail_msg">
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<pre class="m_-6314143797133193542moz-signature gmail_msg" cols="72">--
Hal Finkel
Lead, Compiler Technology and Programming Languages
Leadership Computing Facility
Argonne National Laboratory</pre>
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<pre class="moz-signature" cols="72">--
Hal Finkel
Lead, Compiler Technology and Programming Languages
Leadership Computing Facility
Argonne National Laboratory</pre>
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