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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - X86: Crash in FEntryInserter pass when the first basic block is empty (Linux Kernel)"
href="https://bugs.llvm.org/show_bug.cgi?id=33971">33971</a>
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<th>Summary</th>
<td>X86: Crash in FEntryInserter pass when the first basic block is empty (Linux Kernel)
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<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Backend: X86
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<th>Assignee</th>
<td>manojgupta@google.com
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<th>Reporter</th>
<td>manojgupta@google.com
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<th>CC</th>
<td>chandlerc@gmail.com, hfinkel@anl.gov, llozano@chromium.org, llvm-bugs@lists.llvm.org, niravd@google.com
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<pre>FEntryInserter pass invoked with -mfentry option crashes if the first basic
block is empty.
Reduced test case:
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; Function Attrs: inlinehint minsize noredzone nounwind optsize sspstrong
define void @test() #0 {
entry:
br label %bb1
bb1:
call void @address_taken(i64 ptrtoint (i8* blockaddress(@test2, %bb1) to
i64), i32 512)
ret void
}
; Function Attrs: minsize noredzone optsize
declare void @address_taken(i64, i32) local_unnamed_addr
attributes #0 = { inlinehint minsize noredzone nounwind optsize sspstrong
"fentry-call"="true" }</pre>
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