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<base href="http://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [ARM64] ARM64InstrInfo.cpp:1343: Assertion `0 && "unimplemented reg-to-reg copy"' failed"
href="http://llvm.org/bugs/show_bug.cgi?id=19313">19313</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[ARM64] ARM64InstrInfo.cpp:1343: Assertion `0 && "unimplemented reg-to-reg copy"' failed
</td>
</tr>
<tr>
<th>Product</th>
<td>tools
</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>llc
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mcrosier@codeaurora.org
</td>
</tr>
<tr>
<th>CC</th>
<td>apazos@codeaurora.org, grosbach@apple.com, llvmbugs@cs.uiuc.edu, t.p.northover@gmail.com
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Test case:
---------------------------------------------------------
target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
target triple = "arm64--linux-gnu"
@.str2 = external unnamed_addr constant [51 x i8], align 1
define void @t() {
entry:
%conv = fptosi fp128 undef to i32
tail call void (i8*, ...)* @f(i8* getelementptr inbounds ([51 x i8]* @.str2,
i64 0, i64 0), i32 %conv, i32 24)
ret void
}
declare void @f(i8*, ...)
---------------------------------------------------------
Reproduce with:
llc -O3 test.ll
Complete failure backtrace:
llc: llvm/lib/Target/ARM64/ARM64InstrInfo.cpp:1343: virtual void
llvm::ARM64InstrInfo::copyPhysReg(llvm::MachineBasicBlock&,
llvm::MachineBasicBlock::iterator, llvm::DebugLoc, unsigned int, unsigned int,
bool) const: Assertion `0 && "unimplemented reg-to-reg copy"' failed.
0 llc 0x0000000000ced7f2 llvm::sys::PrintStackTrace(_IO_FILE*) +
34
1 llc 0x0000000000ced414
2 libpthread.so.0 0x00007f7fded9c8f0
3 libc.so.6 0x00007f7fde07ab25 gsignal + 53
4 libc.so.6 0x00007f7fde07e670 abort + 384
5 libc.so.6 0x00007f7fde0739f1 __assert_fail + 241
6 llc 0x00000000006fa168
llvm::ARM64InstrInfo::copyPhysReg(llvm::MachineBasicBlock&,
llvm::MachineBasicBlock::bundle_iterator<llvm::MachineInstr,
llvm::ilist_iterator<llvm::MachineInstr> >, llvm::DebugLoc, unsigned int,
unsigned int, bool) const + 5352
7 llc 0x00000000007b552b
8 llc 0x0000000000a775ff
llvm::FPPassManager::runOnFunction(llvm::Function&) + 655
9 llc 0x0000000000a77acb
llvm::FPPassManager::runOnModule(llvm::Module&) + 43
10 llc 0x0000000000a77e0d
llvm::legacy::PassManagerImpl::run(llvm::Module&) + 797
11 llc 0x0000000000501002
12 llc 0x0000000000502310 main + 272
13 libc.so.6 0x00007f7fde065c4d __libc_start_main + 253
14 llc 0x00000000004f9ba9
Stack dump:
0. Program arguments: llc -O3 test.ll
1. Running pass 'Function Pass Manager' on module 'test.ll'.
2. Running pass 'Post-RA pseudo instruction expansion pass' on function
'@t'</pre>
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