<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Crash in isValidAssumeForContext after lvmorg-11-init-19807-gcf1d9f9f49a"
href="https://bugs.llvm.org/show_bug.cgi?id=46638">46638</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Crash in isValidAssumeForContext after lvmorg-11-init-19807-gcf1d9f9f49a
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<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>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>dmajor@mozilla.com
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org, nikita.ppv@gmail.com
</td>
</tr></table>
<p>
<div>
<pre>Unfortunately the steps to reproduce are roughly "build Firefox with PGO and
LTO enabled for both C++ and Rust" which is an arduous process. Here's hoping
that maybe the bug can be found by inspection alone.
After
<a href="https://github.com/llvm/llvm-project/commit/cf1d9f9f49ae62ab4c7bb685d786a8daa7bc1d4a">https://github.com/llvm/llvm-project/commit/cf1d9f9f49ae62ab4c7bb685d786a8daa7bc1d4a</a>,
the following crash is seen:
<span class="quote">> 0. Running pass 'Function Pass Manager' on module '/home/vm/src/mc/obj-llvmorg-11-init-19841-g7356b4243ad/x86_64-unknown-linux-gnu/release/libgkrust_gtest.a(wgpu_bindings-00b8588e9f85c3f5.wgpu_bindings.cqanh8rg-cgu.0.rcgu.o at 12913238)'.
> 1. Running pass 'Simplify the CFG' on function '@wgpu_server_device_create_bind_group_layout'
> #0 0x00007f1e117e568a llvm::sys::PrintStackTrace(llvm::raw_ostream&) (/home/vm/src/llvmorg-11-init-19807-gcf1d9f9f49a/bin/../lib/libLLVM-11git.so+0x14df68a)
> #1 0x00007f1e117e5964 SignalHandler(int) (/home/vm/src/llvmorg-11-init-19807-gcf1d9f9f49a/bin/../lib/libLLVM-11git.so+0x14df964)
> #2 0x00007f1e12e113c0 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x153c0)
> #3 0x00007f1e1181c036 llvm::BasicBlock::getSinglePredecessor() const (/home/vm/src/llvmorg-11-init-19807-gcf1d9f9f49a/bin/../lib/libLLVM-11git.so+0x1516036)
> #4 0x00007f1e12315d49 llvm::isValidAssumeForContext(llvm::Instruction const*, llvm::Instruction const*, llvm::DominatorTree const*) (/home/vm/src/llvmorg-11-init-19807-gcf1d9f9f49a/bin/../lib/libLLVM-11git.so+0x200fd49)
> #5 0x00007f1e12251dfc SimplifyICmpInst(unsigned int, llvm::Value*, llvm::Value*, llvm::SimplifyQuery const&, unsigned int) (/home/vm/src/llvmorg-11-init-19807-gcf1d9f9f49a/bin/../lib/libLLVM-11git.so+0x1f4bdfc)
> #6 0x00007f1e122564b8 llvm::SimplifyInstruction(llvm::Instruction*, llvm::SimplifyQuery const&, llvm::OptimizationRemarkEmitter*) (/home/vm/src/llvmorg-11-init-19807-gcf1d9f9f49a/bin/../lib/libLLVM-11git.so+0x1f504b8)
> #7 0x00007f1e11e5b8e6 FoldCondBranchOnPHI(llvm::BranchInst*, llvm::DataLayout const&, llvm::AssumptionCache*) (/home/vm/src/llvmorg-11-init-19807-gcf1d9f9f49a/bin/../lib/libLLVM-11git.so+0x1b558e6)
> #8 0x00007f1e11e5753d (anonymous namespace)::SimplifyCFGOpt::simplifyCondBranch(llvm::BranchInst*, llvm::IRBuilder<llvm::ConstantFolder, llvm::IRBuilderDefaultInserter>&) (/home/vm/src/llvmorg-11-init-19807-gcf1d9f9f49a/bin/../lib/libLLVM-11git.so+0x1b5153d)
> #9 0x00007f1e11e4dbca (anonymous namespace)::SimplifyCFGOpt::simplifyOnce(llvm::BasicBlock*) (/home/vm/src/llvmorg-11-init-19807-gcf1d9f9f49a/bin/../lib/libLLVM-11git.so+0x1b47bca)
> #10 0x00007f1e11e4c9b5 llvm::simplifyCFG(llvm::BasicBlock*, llvm::TargetTransformInfo const&, llvm::SimplifyCFGOptions const&, llvm::SmallPtrSetImpl<llvm::BasicBlock*>*) (/home/vm/src/llvmorg-11-init-19807-gcf1d9f9f49a/bin/../lib/libLLVM-11git.so+0x1b469b5)</span ></pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>