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<base href="https://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [X86][SSE] Improve FCOPYSIGN lowering of vectors"
href="https://llvm.org/bugs/show_bug.cgi?id=30433">30433</a>
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<th>Summary</th>
<td>[X86][SSE] Improve FCOPYSIGN lowering of vectors
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Backend: X86
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>llvm-dev@redking.me.uk
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Lowering FCOPYSIGN of vector values are currently scalarized on SSE/AVX
targets.
Both vector lowering and suitable vectorization costs and tests need to be
added.
define <4 x float> @fcopysign_v4f32(<4 x float> %x, <4 x float> %y) {
%1 = call <4 x float> @llvm.copysign.v4f32(<4 x float> %x, <4 x float> %y)
ret <4 x float> %1
}
declare <4 x float> @llvm.copysign.v4f32(<4 x float> %Mag, <4 x float> %Sgn)
define <2 x double> @fcopysign_v2f64(<2 x double> %x, <2 x double> %y) {
%1 = call <2 x double> @llvm.copysign.v2f64(<2 x double> %x, <2 x double> %y)
ret <2 x double> %1
}
declare <2 x double> @llvm.copysign.v2f64(<2 x double> %Mag, <2 x double> %Sgn)
fcopysign_v4f32: # @fcopysign_v4f32
vmovaps .LCPI0_0(%rip), %xmm2 # xmm2 =
[-0.000000e+00,0.000000e+00,0.000000e+00,0.000000e+00]
vmovaps .LCPI0_1(%rip), %xmm4 # xmm4 =
[nan,0.000000e+00,0.000000e+00,0.000000e+00]
vmovshdup %xmm0, %xmm6 # xmm6 = xmm0[1,1,3,3]
vandps %xmm2, %xmm1, %xmm3
vandps %xmm4, %xmm0, %xmm5
vandps %xmm4, %xmm6, %xmm6
vorps %xmm3, %xmm5, %xmm3
vmovshdup %xmm1, %xmm5 # xmm5 = xmm1[1,1,3,3]
vandps %xmm2, %xmm5, %xmm5
vorps %xmm5, %xmm6, %xmm5
vpermilpd $1, %xmm0, %xmm6 # xmm6 = xmm0[1,0]
vpermilps $231, %xmm0, %xmm0 # xmm0 = xmm0[3,1,2,3]
vinsertps $16, %xmm5, %xmm3, %xmm3 # xmm3 = xmm3[0],xmm5[0],xmm3[2,3]
vpermilpd $1, %xmm1, %xmm5 # xmm5 = xmm1[1,0]
vpermilps $231, %xmm1, %xmm1 # xmm1 = xmm1[3,1,2,3]
vandpd %xmm4, %xmm6, %xmm6
vandps %xmm4, %xmm0, %xmm0
vandpd %xmm2, %xmm5, %xmm5
vandps %xmm2, %xmm1, %xmm1
vorpd %xmm5, %xmm6, %xmm5
vorps %xmm1, %xmm0, %xmm0
vinsertps $32, %xmm5, %xmm3, %xmm3 # xmm3 = xmm3[0,1],xmm5[0],xmm3[3]
vinsertps $48, %xmm0, %xmm3, %xmm0 # xmm0 = xmm3[0,1,2],xmm0[0]
retq
fcopysign_v2f64: # @fcopysign_v2f64
vmovapd .LCPI1_0(%rip), %xmm2 # xmm2 = [-0.000000e+00,0.000000e+00]
vmovapd .LCPI1_1(%rip), %xmm4 # xmm4 = [nan,0.000000e+00]
vandpd %xmm2, %xmm1, %xmm3
vandpd %xmm4, %xmm0, %xmm5
vpermilpd $1, %xmm1, %xmm1 # xmm1 = xmm1[1,0]
vpermilpd $1, %xmm0, %xmm0 # xmm0 = xmm0[1,0]
vandpd %xmm2, %xmm1, %xmm1
vandpd %xmm4, %xmm0, %xmm0
vorpd %xmm3, %xmm5, %xmm3
vorpd %xmm1, %xmm0, %xmm0
vunpcklpd %xmm0, %xmm3, %xmm0 # xmm0 = xmm3[0],xmm0[0]
retq</pre>
</div>
</p>
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