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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Bad machine code: Subrange lanemask is invalid"
href="https://bugs.llvm.org/show_bug.cgi?id=49346">49346</a>
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<tr>
<th>Summary</th>
<td>Bad machine code: Subrange lanemask is invalid
</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>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<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>Scalar Optimizations
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>paulsson@linux.vnet.ibm.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=24570" name="attach_24570" title="reduced testcase">attachment 24570</a> <a href="attachment.cgi?id=24570&action=edit" title="reduced testcase">[details]</a></span>
reduced testcase
llc -mcpu=arch13 -O3 -disable-machine-dce -systemz-subreg-liveness
-verify-misched -join-globalcopies=false tc_crash0_aftercreduce.ll
# Before machine scheduling.
********** INTERVALS **********
%1 EMPTY weight:0.000000e+00
%3 [48r,48d:0) 0@48r L0000000000000000 [48r,48d:0) 0@48r weight:0.000000e+00
%4 [48r,64r:0)[64r,96r:1) 0@48r 1@64r LFFFFFFFFFFFFFFFF [48r,64r:0)[64r,96r:1)
0@48r 1@64r weight:0.000000e+00
RegMasks: 144r
********** MACHINEINSTRS **********
# Machine code for function j: NoPHIs, TracksLiveness, TiedOpsRewritten
0B bb.0.bb:
successors: %bb.1(0x80000000); %bb.1(100.00%)
16B CGHI undef %1:gr64bit, 7, implicit-def $cc
48B %4:gr64bit = LGHI 0
64B %4:gr64bit = LOCGHI %4:gr64bit(tied-def 0), 1, 14, 2, implicit killed
$cc
96B STGRL %4:gr64bit, @c :: (store 8 into @c)
112B ADJCALLSTACKDOWN 0, 0
128B $r2d = LGHI 0
144B CallBRASL @i, killed $r2d, <regmask $f8d $f9d $f10d $f11d $f12d $f13d
$f14d $f15d $f8q $f9q $f12q $f13q $f8s $f9s $f10s $f11s $f12s $f13s $f14s $f15s
$r6d $r7d $r8d $r9d $r10d $r11d $r12d $r13d $r14d $r15d $r6h $r7h $r8h and 22
more...>, implicit-def dead $r14d, implicit-def dead $cc, implicit $fpc
160B ADJCALLSTACKUP 0, 0
176B bb.1.bb3:
; predecessors: %bb.0, %bb.1
successors: %bb.1(0x80000000); %bb.1(100.00%)
192B J %bb.1
# End machine code for function j.
*** Bad machine code: Subrange lanemask is invalid ***
- function: j
- interval: %4 [48r,64r:0)[64r,96r:1) 0@48r 1@64r LFFFFFFFFFFFFFFFF
[48r,64r:0)[64r,96r:1) 0@48r 1@64r weight:0.000000e+00
LLVM ERROR: Found 1 machine code errors.</pre>
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