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<base href="https://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - ARMv7 -O0: Cannot scavenge register without an emergency spill slot!"
href="https://llvm.org/bugs/show_bug.cgi?id=23444">23444</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>ARMv7 -O0: Cannot scavenge register without an emergency spill slot!
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</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>Backend: ARM
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>stoklund@2pi.dk
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=14296" name="attach_14296" title="Binary test case">attachment 14296</a> <a href="attachment.cgi?id=14296&action=edit" title="Binary test case">[details]</a></span>
Binary test case
llc -O0 fn06.bc
Assertion failed: (Scavenged[SI].FrameIndex >= 0 && "Cannot scavenge register
without an emergency spill slot!"), function scavengeRegister, file
/Users/jolesen/llvm/lib/CodeGen/RegisterScavenging.cpp, line 419.
0 llc 0x000000010c6a786e
llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 46
1 llc 0x000000010c6a8e39
PrintStackTraceSignalHandler(void*) + 25
2 llc 0x000000010c6a9275 SignalHandler(int) + 565
3 libsystem_platform.dylib 0x00007fff81da45aa _sigtramp + 26
4 libsystem_platform.dylib 0x0000000000004000 _sigtramp + 2116418160
5 llc 0x000000010c6a8e5b raise + 27
6 llc 0x000000010c6a8f12 abort + 18
7 llc 0x000000010c6a8ef1 __assert_rtn + 129
8 llc 0x000000010bc72c3c
llvm::RegScavenger::scavengeRegister(llvm::TargetRegisterClass const*,
llvm::MachineBasicBlock::bundle_iterator<llvm::MachineInstr,
llvm::ilist_iterator<llvm::MachineInstr> >, int) + 1308
9 llc 0x000000010bbe1547 (anonymous
namespace)::PEI::scavengeFrameVirtualRegs(llvm::MachineFunction&) + 1495
10 llc 0x000000010bbdd9c6 (anonymous
namespace)::PEI::runOnMachineFunction(llvm::MachineFunction&) + 614
11 llc 0x000000010bb06b8e
llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 110
12 llc 0x000000010c52e38b
llvm::FPPassManager::runOnFunction(llvm::Function&) + 427
13 llc 0x000000010c52e698
llvm::FPPassManager::runOnModule(llvm::Module&) + 104
14 llc 0x000000010c52f0a4 (anonymous
namespace)::MPPassManager::runOnModule(llvm::Module&) + 1412
15 llc 0x000000010c52e94e
llvm::legacy::PassManagerImpl::run(llvm::Module&) + 302
16 llc 0x000000010c52f821
llvm::legacy::PassManager::run(llvm::Module&) + 33
17 llc 0x000000010a77b5e8 compileModule(char**,
llvm::LLVMContext&) + 9432
18 llc 0x000000010a7790a9 main + 233
19 libdyld.dylib 0x00007fff899355fd start + 1
Stack dump:
0. Program arguments: build/Debug+Asserts/bin/llc -O0 fn06.bc
1. Running pass 'Function Pass Manager' on module 'fn06.bc'.
2. Running pass 'Prologue/Epilogue Insertion & Frame Finalization' on
function '@s_'</pre>
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