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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 --- - PowerPC unimplemented relocation assertion"
href="https://llvm.org/bugs/show_bug.cgi?id=24686">24686</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>PowerPC unimplemented relocation assertion
</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>Backend: PowerPC
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>anton@samba.org
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>I hit this when cutting down a testcase for another issue:
# cat test.s
_stext:
ld %r5, p_end - _stext(%r5)
# clang -c tt.s
Unimplemented
UNREACHABLE executed at
/home/anton/llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp:79!
(gdb) backtrace
#0 __GI_abort () at abort.c:51
#1 0x000000001201e64c in llvm::llvm_unreachable_internal (
msg=0x153d3330 "Unimplemented",
file=0x153d32d0
"/home/anton/llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp",
line=79) at /home/anton/llvm/lib/Support/ErrorHandling.cpp:117
#2 0x000000001103c228 in (anonymous
namespace)::PPCELFObjectWriter::GetRelocType (this=0x16bb3260, Target=...,
Fixup=..., IsPCRel=true)
at
/home/anton/llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp:79
#3 0x0000000011ccf2bc in (anonymous namespace)::ELFObjectWriter::GetRelocType
(this=0x16bb3280, Target=..., Fixup=..., IsPCRel=true)
at /home/anton/llvm/lib/MC/ELFObjectWriter.cpp:131
#4 0x0000000011cd0ffc in (anonymous
namespace)::ELFObjectWriter::recordRelocation (this=0x16bb3280, Asm=...,
Layout=..., Fragment=0x16bb7660, Fixup=...,
Target=..., IsPCRel=@0x3fffffffc79f: true, FixedValue=@0x3fffffffc7a0: 0)
at /home/anton/llvm/lib/MC/ELFObjectWriter.cpp:677
#5 0x0000000011d01558 in llvm::MCAssembler::handleFixup (this=0x16bb3440,
Layout=..., F=..., Fixup=...)
at /home/anton/llvm/lib/MC/MCAssembler.cpp:849
#6 0x0000000011d01c58 in llvm::MCAssembler::layout (this=0x16bb3440,
Layout=...) at /home/anton/llvm/lib/MC/MCAssembler.cpp:922
#7 0x0000000011d01dc8 in llvm::MCAssembler::Finish (this=0x16bb3440)
at /home/anton/llvm/lib/MC/MCAssembler.cpp:933
#8 0x0000000011d59c80 in llvm::MCObjectStreamer::FinishImpl (this=0x16bb30c0)
at /home/anton/llvm/lib/MC/MCObjectStreamer.cpp:460
#9 0x0000000011d3a5b8 in llvm::MCELFStreamer::FinishImpl (this=0x16bb30c0)
at /home/anton/llvm/lib/MC/MCELFStreamer.cpp:658
#10 0x0000000011d65ba4 in llvm::MCStreamer::Finish (this=0x16bb30c0)
at /home/anton/llvm/lib/MC/MCStreamer.cpp:595
#11 0x0000000011d8b2fc in (anonymous namespace)::AsmParser::Run (
this=0x16bb49f0, NoInitialTextSection=false, NoFinalize=false)
at /home/anton/llvm/lib/MC/MCParser/AsmParser.cpp:705
#12 0x0000000010e63b88 in ExecuteAssembler (Opts=..., Diags=...)
at /home/anton/llvm/tools/clang/tools/driver/cc1as_main.cpp:406
#13 0x0000000010e643c0 in cc1as_main (Argv=...,
Argv0=0x3ffffffff66f "/home/anton/llvm.install/bin/clang-3.8",
MainAddr=0x10e41440 <GetExecutablePath[abi:cxx11](char const*, bool)>)
at /home/anton/llvm/tools/clang/tools/driver/cc1as_main.cpp:491
#14 0x0000000010e432a0 in ExecuteCC1Tool (argv=..., Tool=...)
at /home/anton/llvm/tools/clang/tools/driver/driver.cpp:382
#15 0x0000000010e43910 in main (argc_=19, argv_=0x3ffffffff348)
at /home/anton/llvm/tools/clang/tools/driver/driver.cpp:443
Looks the relocation is PPC::fixup_ppc_half16ds. This should fail, but it would
be nice if it failed with an error message instead of a compiler ICE.</pre>
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