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<body><span class="vcard"><a class="email" href="mailto:chandlerc@gmail.com" title="Chandler Carruth <chandlerc@gmail.com>"> <span class="fn">Chandler Carruth</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Cannot select v2f64 = vector_shuffle"
href="http://llvm.org/bugs/show_bug.cgi?id=20393">bug 20393</a>
<br>
<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;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
</tr></table>
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<div>
<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Cannot select v2f64 = vector_shuffle"
href="http://llvm.org/bugs/show_bug.cgi?id=20393#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Cannot select v2f64 = vector_shuffle"
href="http://llvm.org/bugs/show_bug.cgi?id=20393">bug 20393</a>
from <span class="vcard"><a class="email" href="mailto:chandlerc@gmail.com" title="Chandler Carruth <chandlerc@gmail.com>"> <span class="fn">Chandler Carruth</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=20393#c0">comment #0</a>)
<span class="quote">> $ clang -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -O2 -std=gnu++11 -x
> c++ x.ii
>
> Testcase:
>
> typedef double __m128d __attribute__((__vector_size__(16)));
> __m128d ploadu();
>
> __m128d ploadu(__m128d *ptr) {
> __m128d a;
> struct B {
> __m128d __v;
> } __attribute__((packed));
> a = ((B *)ptr)->__v;
> return a;
> }
>
> void use(int);
>
> void test(__m128d *ptr) {
> __m128d C_c = ploadu(ptr);
> use(C_c[1]);
> }
>
> Output:
>
> fatal error: error in backend: Cannot select: 0x2c1aed8: v2f64 =
> vector_shuffle 0x2c1afe0, 0x2c1a9b0<1,1> [ORD=3] [ID=11]
> 0x2c1afe0: v2f64,ch = load 0x2bdb080, 0x2c1b0e8,
> 0x2c1acc8<LD16[%ptr](align=1)(tbaa=<badref>)> [ORD=2] [ID=10]
> 0x2c1b0e8: i64,ch = CopyFromReg 0x2bdb080, 0x2c1b1f0 [ORD=1] [ID=9]
> 0x2c1b1f0: i64 = Register %vreg0 [ID=1]
> 0x2c1acc8: i64 = undef [ID=2]
> 0x2c1a9b0: v2f64 = undef [ID=8]
> In function: _Z4testPDv2_d</span >
No idea when, but this is fixed in ToT.</pre>
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