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<body><span class="vcard"><a class="email" href="mailto:renato.golin@linaro.org" title="Renato Golin <renato.golin@linaro.org>"> <span class="fn">Renato Golin</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed" title="RESOLVED INVALID - Auto-detect CPU on native compilation" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D24326&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=U_MYDZDG-4Xa2Fklt7UmPrYgWF10TVRVuh-3iJvfgjo&s=DYpP3jppZES5MR4lqFEhmRZNmkLMlnybR-UdIqroAU0&e=">bug 24326</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>ASSIGNED
</td>
<td>RESOLVED
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<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>INVALID
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed" title="RESOLVED INVALID - Auto-detect CPU on native compilation" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D24326-23c7&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=U_MYDZDG-4Xa2Fklt7UmPrYgWF10TVRVuh-3iJvfgjo&s=UocEEsPHxMSpDesG2nlSP5gJuFQHLk5AAOeCvU92lQ0&e=">Comment # 7</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed" title="RESOLVED INVALID - Auto-detect CPU on native compilation" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D24326&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=U_MYDZDG-4Xa2Fklt7UmPrYgWF10TVRVuh-3iJvfgjo&s=DYpP3jppZES5MR4lqFEhmRZNmkLMlnybR-UdIqroAU0&e=">bug 24326</a>
from <span class="vcard"><a class="email" href="mailto:renato.golin@linaro.org" title="Renato Golin <renato.golin@linaro.org>"> <span class="fn">Renato Golin</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=24326#c6">comment #6</a>)
<span class="quote">> When we build on x86, the default targets for i386 and x86-64 are the
> lowest-common-denominator versions of these platforms. No detected features
> of the host CPU are used without -march=native and the generated binary is
> expected to run on any i386 or x86-64 CPU. If we set -match=i686 in CFLAGS
> and some build systems ignore it, then this results in slightly suboptimal
> builds, but not in broken packages.</span >
Good point.
<span class="quote">> If we're building for ARMv6, we want ARMv6 binaries that will run on any
> ARMv6 or newer CPU, not whatever the host happens to be.</span >
That's not exactly true with Clang (v8A has NEON by default). But that's for
another discussion.
<span class="quote">> In addition, deterministic builds are increasingly important for package
> verification and we don't want *anything* other than explicit arguments
> passed to the compiler to affect the binary contents. Some things are
> unavoidable there, but let's not introduce more.</span >
Yes, that's the best point against my proposal, so I'm marking this bug as
invalid.
Thanks!</pre>
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