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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Reading a 8-byte aligned f128 emits a movaps instruction"
href="https://bugs.llvm.org/show_bug.cgi?id=38001">38001</a>
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<th>Summary</th>
<td>Reading a 8-byte aligned f128 emits a movaps instruction
</td>
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<th>Product</th>
<td>tools
</td>
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<th>Version</th>
<td>6.0
</td>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>llc
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>eduardosanchezmunoz@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
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<pre>Created <span class=""><a href="attachment.cgi?id=20496" name="attach_20496" title="Example LLVM IR">attachment 20496</a> <a href="attachment.cgi?id=20496&action=edit" title="Example LLVM IR">[details]</a></span>
Example LLVM IR
Using load on a f128 with align 8 emits a movaps instruction (on x86-64 with
mmx), which expects a 16-byte aligned address.
An example IR is attached. It can be compiled with
llc -march=x86-64 -mattr=+mmx -O1 movaps.ll
The output of llc -version is:
LLVM (<a href="http://llvm.org/">http://llvm.org/</a>):
LLVM version 6.0.0
Optimized build.
Default target: x86_64-pc-linux-gnu
Host CPU: skylake
Registered Targets:
aarch64 - AArch64 (little endian)
aarch64_be - AArch64 (big endian)
amdgcn - AMD GCN GPUs
arm - ARM
arm64 - ARM64 (little endian)
armeb - ARM (big endian)
bpf - BPF (host endian)
bpfeb - BPF (big endian)
bpfel - BPF (little endian)
hexagon - Hexagon
lanai - Lanai
mips - Mips
mips64 - Mips64 [experimental]
mips64el - Mips64el [experimental]
mipsel - Mipsel
msp430 - MSP430 [experimental]
nvptx - NVIDIA PTX 32-bit
nvptx64 - NVIDIA PTX 64-bit
ppc32 - PowerPC 32
ppc64 - PowerPC 64
ppc64le - PowerPC 64 LE
r600 - AMD GPUs HD2XXX-HD6XXX
sparc - Sparc
sparcel - Sparc LE
sparcv9 - Sparc V9
systemz - SystemZ
thumb - Thumb
thumbeb - Thumb (big endian)
x86 - 32-bit X86: Pentium-Pro and above
x86-64 - 64-bit X86: EM64T and AMD64
xcore - XCore
I have installed LLVM from Manjaro repositories.</pre>
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