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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [Loop Vectorize] getOrCreateTripCount fails with pointer comparisons"
href="https://bugs.llvm.org/show_bug.cgi?id=41179">41179</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[Loop Vectorize] getOrCreateTripCount fails with pointer comparisons
</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>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Scalar Optimizations
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>llvm-dev@redking.me.uk
</td>
</tr>
<tr>
<th>CC</th>
<td>ayal.zaks@intel.com, florian_hahn@apple.com, llvm-bugs@lists.llvm.org, sanjoy@playingwithpointers.com
</td>
</tr></table>
<p>
<div>
<pre><a href="https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=13350">https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=13350</a>
; ModuleID = 'bugpoint-reduced-simplified.bc'
source_filename = "llvm/test/Transforms/LoopVectorize/PowerPC/pr30990.ll"
target triple = "powerpc64-unknown-linux-gnu"
define void @foo() {
entry:
br label %while.body
while.body: ; preds = %while.body, %entry
%count.09 = phi i32 [ %add, %while.body ], [ 0, %entry ]
%add = add nsw i32 -1, %count.09
%G = getelementptr i8, i8* undef, i32 %add
%cmp = icmp ult i8* undef, %G
br i1 %cmp, label %while.body, label %while.end.loopexit
while.end.loopexit: ; preds = %while.body
ret void
}
opt -loop-vectorize fuzz.ll -S -o -
opt: /home/simon/LLVM/llvm/lib/Analysis/ScalarEvolution.cpp:4079: const
llvm::SCEV* llvm::ScalarEvolution::getNoopOrZeroExtend(const llvm::SCEV*,
llvm::Type*): Assertion `getTypeSizeInBits(SrcTy) <= getTypeSizeInBits(Ty) &&
"getNoopOrZeroExtend cannot truncate!"' failed.</pre>
</div>
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