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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 - GlobalOpt asserts with "Should be GlobalVariable""
href="https://bugs.llvm.org/show_bug.cgi?id=51608">51608</a>
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<tr>
<th>Summary</th>
<td>GlobalOpt asserts with "Should be GlobalVariable"
</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>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>release blocker
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Interprocedural Optimizations
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>alina.sbirlea@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
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<pre>Reproduces with "opt -passes=globalopt test.ll" on:
%sometype = type { i8* }
@map = internal unnamed_addr global %sometype* null, align 8
define void @Init() {
entry:
%call = tail call noalias nonnull dereferenceable(48) i8* @_Znwm(i64 48)
store i8* %call, i8** bitcast (%sometype** @map to i8**), align 8
ret void
}
define void @Usage() {
entry:
%0 = load i8*, i8** bitcast (%sometype** @map to i8**), align 8
%.not = icmp eq i8* %0, null
unreachable
}
declare i8* @_Znwm(i64)
Assertion details:
llvm-project/llvm/lib/Transforms/IPO/GlobalOpt.cpp:708: bool
AllUsesOfValueWillTrapIfNull(const llvm::Value *, SmallPtrSetImpl<const
llvm::PHINode *> &): Assertion `isa<GlobalValue>(
cast<LoadInst>(U->getOperand(0))->getPointerOperand()) && "Should be
GlobalVariable"' failed.
[...]
#10 0x000000000747c411 AllUsesOfValueWillTrapIfNull(llvm::Value const*,
llvm::SmallPtrSetImpl<llvm::PHINode const*>&)
llvm-project/llvm/lib/Transforms/IPO/GlobalOpt.cpp:712:5
#11 0x000000000747b11a allUsesOfLoadedValueWillTrapIfNull(llvm::GlobalVariable
const*) llvm-project/llvm/lib/Transforms/IPO/GlobalOpt.cpp:731:13
#12 0x000000000747a9fa
tryToOptimizeStoreOfMallocToGlobal(llvm::GlobalVariable*, llvm::CallInst*,
llvm::Type*, llvm::AtomicOrdering, llvm::DataLayout const&,
llvm::TargetLibraryInfo*)
llvm-project/llvm/lib/Transforms/IPO/GlobalOpt.cpp:1118:7
#13 0x00000000074784b4 optimizeOnceStoredGlobal(llvm::GlobalVariable*,
llvm::Value*, llvm::AtomicOrdering, llvm::DataLayout const&,
llvm::function_ref<llvm::TargetLibraryInfo& (llvm::Function&)>)
llvm-project/llvm/lib/Transforms/IPO/GlobalOpt.cpp:1178:11
#14 0x0000000007475758 processInternalGlobal(llvm::GlobalVariable*,
llvm::GlobalStatus const&, llvm::function_ref<llvm::TargetLibraryInfo&
(llvm::Function&)>, llvm::function_ref<llvm::DominatorTree& (llvm::Function&)>)
llvm-project/llvm/lib/Transforms/IPO/GlobalOpt.cpp:1633:9
#15 0x0000000007473c20 processGlobal(llvm::GlobalValue&,
llvm::function_ref<llvm::TargetLibraryInfo& (llvm::Function&)>,
llvm::function_ref<llvm::DominatorTree& (llvm::Function&)>)
llvm-project/llvm/lib/Transforms/IPO/GlobalOpt.cpp:1688:65
[...]</pre>
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