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<base href="http://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Assertion failed: getNoopOrZeroExtend cannot truncate!"
href="http://llvm.org/bugs/show_bug.cgi?id=18049">18049</a>
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<tr>
<th>Summary</th>
<td>Assertion failed: getNoopOrZeroExtend cannot truncate!
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>FreeBSD
</td>
</tr>
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<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>M8R-9yw8a5@mailinator.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>1. Source code (x.c):
extern int big[];
void f(long long count)
{
for(int i = 0; i < count; ++i)
big[i] = ~big[i];
}
2. Command line:
clang -O2 -march=prescott -c x.c
3. Output:
Assertion failed: (getTypeSizeInBits(SrcTy) <= getTypeSizeInBits(Ty) &&
"getNoopOrZeroExtend cannot truncate!"), function getNoopOrZeroExtend, file
/path/to/llvm-src/lib/Analysis/ScalarEvolution.cpp, line 2845.
Stack dump:
0. Program arguments: /path/to/llvm/bin/clang -cc1 -triple
i386-unknown-freebsd11.0 -emit-obj -disable-free -main-file-name x.c
-mrelocation-model static -mdisable-fp-elim -masm-verbose -mconstructor-aliases
-target-cpu prescott -target-linker-version 2.17.50 -coverage-file
/path/to/testcase/x.o -resource-dir /path/to/llvm/bin/../lib/clang/3.5 -O2
-Wall -fdebug-compilation-dir /path/to/testcase -ferror-limit 19
-fmessage-length 82 -mstackrealign -fobjc-runtime=gnustep
-fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-slp
-o x.o -x c x.c
1. <eof> parser at end of file
2. Per-module optimization passes
3. Running pass 'Function Pass Manager' on module 'x.c'.
4. Running pass 'Loop Pass Manager' on function '@f'
5. Running pass 'Loop Vectorization' on basic block '%for.body'</pre>
</div>
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