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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 - Problem when passing small vector as parameter for ARM + NEON target"
href="https://llvm.org/bugs/show_bug.cgi?id=13275">bug 13275</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>NEW
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">CC</td>
<td>
</td>
<td>renato.golin@linaro.org
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>INVALID
</td>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - Problem when passing small vector as parameter for ARM + NEON target"
href="https://llvm.org/bugs/show_bug.cgi?id=13275#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - Problem when passing small vector as parameter for ARM + NEON target"
href="https://llvm.org/bugs/show_bug.cgi?id=13275">bug 13275</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>Funny enough, GAS is now perfectly ok with the syntax, and throws errors if we
use 64:
$ arm-none-eabi-as -march=armv7-a -mcpu=cortex-a9 -mfpu=neon -mfloat-abi=hard
bar.s
bar.s: Assembler messages:
bar.s:30: Error: unsupported alignment for instruction -- `vld1.16
{d16[0]},[r1:64]'
bar.s:31: Error: unsupported alignment for instruction -- `vld1.16
{d17[0]},[r0:64]'
While LLVM-MC seems to be on the same page:
$ echo "vld1.16{d16[0]}, [r1:64]" | llvm-mc -triple=armv7-a-linux-gnueabihf
-mcpu=cortex-a9 -show-encoding
.text
<stdin>:1:22: error: alignment must be 16 or omitted
vld1.16{d16[0]}, [r1:64]
^
Even though the ARM ARM (A8.8.320) seems to imply it should be in bits, both
tools want in bytes, and identical to the element size (which makes some
sense).</pre>
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