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<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91">Bug description: merging two vector (2 x double) into one vector where the first component is A.1 and the second is B.1 gave a vector with (A.1, undef) in corei7, the correct output should
be (A.1, B.1).<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91">The lit test that related to this issue need to be update:<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91">(llvm\test\CodeGen\X86\sse2.ll)<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91">define void @test2(<2 x double>* %r, <2 x double>* %A, double %B) nounwind {<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91"> %tmp3 = load <2 x double>* %A, align 16<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91"> %tmp7 = insertelement <2 x double> undef, double %B, i32 0<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91"> %tmp9 = shufflevector <2 x double> %tmp3, <2 x double> %tmp7, <2 x i32> < i32 0, i32 2 ><o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91"> store <2 x double> %tmp9, <2 x double>* %r, align 16<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91"> ret void<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91"> <o:p>
</o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91">; CHECK: test2:<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91">; CHECK: movsd 12(%esp), %xmm0<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91">; CHECK-NEXT: movl 8(%esp), %eax<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91">; CHECK-NEXT: movlpd (%eax), %xmm0<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91">; CHECK-NEXT: movl 4(%esp), %eax<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91">; CHECK-NEXT: movapd %xmm0, (%eax)<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91">; CHECK-NEXT: ret<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-size:12.0pt;color:#365F91">}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#365F91"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#365F91">The correct code that need to be generate is:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#365F91"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#365F91">; CHECK: test2:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#365F91">; CHECK: movl 8(%esp), %eax<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#365F91">; CHECK-NEXT: movapd (%eax), %xmm0<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#365F91">; CHECK-NEXT: movhpd 12(%esp), %xmm0<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#365F91">; CHECK-NEXT: movl 4(%esp), %eax<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#365F91">; CHECK-NEXT: movapd %xmm0, (%eax)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#365F91">; CHECK-NEXT: ret<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#365F91"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#365F91"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#365F91"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><i><span style="font-size:12.0pt;color:#548DD4">Thanks,<o:p></o:p></span></i></b></p>
<p class="MsoNormal"><b><i><span style="font-size:12.0pt;color:#548DD4">Asaf<o:p></o:p></span></i></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
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