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<body><span class="vcard"><a class="email" href="mailto:spatel+llvm@rotateright.com" title="Sanjay Patel <spatel+llvm@rotateright.com>"> <span class="fn">Sanjay Patel</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [SLP vectorization] missed opportunity to use absolute value vector instruction (vpabsd)"
href="http://llvm.org/bugs/show_bug.cgi?id=17172">bug 17172</a>
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<table border="1" cellspacing="0" cellpadding="8">
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<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">CC</td>
<td>
</td>
<td>spatel+llvm@rotateright.com
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
</tr></table>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [SLP vectorization] missed opportunity to use absolute value vector instruction (vpabsd)"
href="http://llvm.org/bugs/show_bug.cgi?id=17172#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [SLP vectorization] missed opportunity to use absolute value vector instruction (vpabsd)"
href="http://llvm.org/bugs/show_bug.cgi?id=17172">bug 17172</a>
from <span class="vcard"><a class="email" href="mailto:spatel+llvm@rotateright.com" title="Sanjay Patel <spatel+llvm@rotateright.com>"> <span class="fn">Sanjay Patel</span></a>
</span></b>
<pre>This got fixed in the SLP vectorizer / cost-model sometime in the last year:
$ ./clang -v
clang version 3.6.0 (221222)
Target: x86_64-apple-darwin13.4.0
Thread model: posix
$ ./clang -O3 -fomit-frame-pointer -march=corei7-avx vpsad.c -S -o -
.section __TEXT,__text,regular,pure_instructions
.macosx_version_min 10, 9
.globl _foo
.align 4, 0x90
_foo: ## @foo
.cfi_startproc
## BB#0: ## %entry
vpabsd (%rdi), %xmm0
vmovdqu %xmm0, (%rdi)
retq</pre>
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