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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 --- - fatal error: error in backend: Cannot select: 0x344cf50: i8,ch = AtomicSwap"
href="http://llvm.org/bugs/show_bug.cgi?id=17163">17163</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>fatal error: error in backend: Cannot select: 0x344cf50: i8,ch = AtomicSwap
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>3.3
</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>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>simmons.44@gmail.com
</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=11168" name="attach_11168" title="Preprocessed Source">attachment 11168</a> <a href="attachment.cgi?id=11168&action=edit" title="Preprocessed Source">[details]</a></span>
Preprocessed Source
__c11_atomic_xxx operations fail to compile when attempted on a file scope
static variable. Preprocessed source attached.
llc output:
atomic store operand must be power-of-two byte-sized integer
store atomic i1 true, i1* @test release, align 1
i1Broken module found, compilation aborted!
0 libLLVM-3.3.so 0x00007fdbe34ad112 llvm::sys::PrintStackTrace(_IO_FILE*) +
34
1 libLLVM-3.3.so 0x00007fdbe34acf79
2 libpthread.so.0 0x00007fdbe25b2870
3 libc.so.6 0x00007fdbe1f2a3d9 gsignal + 57
4 libc.so.6 0x00007fdbe1f2b7d8 abort + 328
5 libLLVM-3.3.so 0x00007fdbe2d06f01
6 libLLVM-3.3.so 0x00007fdbe2d0efb5
7 libLLVM-3.3.so 0x00007fdbe2cf1a57
llvm::FPPassManager::runOnFunction(llvm::Function&) + 471
8 libLLVM-3.3.so 0x00007fdbe2cf1aeb
llvm::FPPassManager::runOnModule(llvm::Module&) + 43
9 libLLVM-3.3.so 0x00007fdbe2cf1d1b
llvm::MPPassManager::runOnModule(llvm::Module&) + 523
10 libLLVM-3.3.so 0x00007fdbe2cf3cfc llvm::PassManagerImpl::run(llvm::Module&)
+ 172
11 llc 0x000000000040cdb4
12 llc 0x000000000040bdc8 main + 376
13 libc.so.6 0x00007fdbe1f16bc5 __libc_start_main + 245
14 llc 0x000000000040be21
Stack dump:
0. Program arguments: llc atomic_test.ll
1. Running pass 'Function Pass Manager' on module 'atomic_test.ll'.
2. Running pass 'Module Verifier' on function '@main'
clang output:
fatal error: error in backend: Cannot select: 0x344cf50: i8,ch = AtomicSwap
0x344ce50:1,
0x344d150, 0x3449f80<Volatile ST1[@test]> [ID=28]
0x344d150: i64 = X86ISD::Wrapper 0x344d450 [ID=19]
0x344d450: i64 = TargetGlobalAddress<i1* @test> 0 [ID=16]
0x3449f80: i8 = Constant<1> [ORD=3] [ID=15]
In function: main
clang: error: clang frontend command failed with exit code 70 (use -v to see
invocation)
clang version 3.3 (tags/RELEASE_33/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
clang invocation:
clang -cc1 -triple x86_64-unknown-linux-gnu -S -disable-free
-disable-llvm-verifier -main-file-name atomic_test.c -mrelocation-model static
-fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables
-fuse-init-array -target-cpu x86-64 -target-linker-version 2.23.2
-momit-leaf-frame-pointer -O2 -Wall -Wextra -std=c11 -ferror-limit 19
-fmessage-length 90 -pthread -mstackrealign -fobjc-runtime=gcc
-fobjc-default-synthesize-properties -fdiagnostics-show-option
-fcolor-diagnostics -backend-option -vectorize-loops -x c atomic_test-rjAMdm.c</pre>
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