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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Assertion `BasePtr == FramePtr && "Expected the FP as base register"' failed."
href="https://bugs.llvm.org/show_bug.cgi?id=43718">43718</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Assertion `BasePtr == FramePtr && "Expected the FP as base register"' failed.
</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>Linux
</td>
</tr>
<tr>
<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>Backend: X86
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>nick@wasmer.io
</td>
</tr>
<tr>
<th>CC</th>
<td>craig.topper@gmail.com, llvm-bugs@lists.llvm.org, llvm-dev@redking.me.uk, spatel+llvm@rotateright.com
</td>
</tr></table>
<p>
<div>
<pre>Setting code model to large and enabling AVX trigger a crash in the
"Prologue/Epilogue Insertion & Frame Finalization" backend pass.
$ llc -code-model=large -mattr=+avx b.ll
llc: /home/nick/llvm-upstream/llvm/lib/Target/X86/X86RegisterInfo.cpp:763:
virtual void
llvm::X86RegisterInfo::eliminateFrameIndex(llvm::MachineBasicBlock::iterator,
int, unsigned int, llvm::RegScavenger*) const: Assertion `BasePtr == FramePtr
&& "Expected the FP as base register"' failed.
Stack dump:
0. Program arguments: llvm-upstream/build/bin/llc -code-model=large
-mattr=+avx b.ll
1. Running pass 'Function Pass Manager' on module 'b.ll'.
2. Running pass 'Prologue/Epilogue Insertion & Frame Finalization' on
function '@fn1774'
#0 0x000055b7fcc5e4a0 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
/home/nick/llvm-upstream/llvm/lib/Support/Unix/Signals.inc:532:22
#1 0x000055b7fcc5e533 PrintStackTraceSignalHandler(void*)
/home/nick/llvm-upstream/llvm/lib/Support/Unix/Signals.inc:593:1
#2 0x000055b7fcc5c6d8 llvm::sys::RunSignalHandlers()
/home/nick/llvm-upstream/llvm/lib/Support/Signals.cpp:68:20
#3 0x000055b7fcc5df1d SignalHandler(int)
/home/nick/llvm-upstream/llvm/lib/Support/Unix/Signals.inc:384:1
#4 0x00007ff88e555510 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x13510)
#5 0x00007ff88e030081 raise (/lib/x86_64-linux-gnu/libc.so.6+0x3a081)
#6 0x00007ff88e01b535 abort (/lib/x86_64-linux-gnu/libc.so.6+0x25535)
#7 0x00007ff88e01b40f (/lib/x86_64-linux-gnu/libc.so.6+0x2540f)
#8 0x00007ff88e028b92 (/lib/x86_64-linux-gnu/libc.so.6+0x32b92)
#9 0x000055b7fb52dee4
llvm::X86RegisterInfo::eliminateFrameIndex(llvm::MachineInstrBundleIterator<llvm::MachineInstr,
false>, int, unsigned int, llvm::RegScavenger*) const
/home/nick/llvm-upstream/llvm/lib/Target/X86/X86RegisterInfo.cpp:764:52
#10 0x000055b7fc01c540 (anonymous
namespace)::PEI::replaceFrameIndices(llvm::MachineBasicBlock*,
llvm::MachineFunction&, int&)
/home/nick/llvm-upstream/llvm/lib/CodeGen/PrologEpilogInserter.cpp:1279:7
#11 0x000055b7fc01bca2 (anonymous
namespace)::PEI::replaceFrameIndices(llvm::MachineFunction&)
/home/nick/llvm-upstream/llvm/lib/CodeGen/PrologEpilogInserter.cpp:1161:26
#12 0x000055b7fc01832d (anonymous
namespace)::PEI::runOnMachineFunction(llvm::MachineFunction&)
/home/nick/llvm-upstream/llvm/lib/CodeGen/PrologEpilogInserter.cpp:269:41
#13 0x000055b7fbe675c0
llvm::MachineFunctionPass::runOnFunction(llvm::Function&)
/home/nick/llvm-upstream/llvm/lib/CodeGen/MachineFunctionPass.cpp:73:33
#14 0x000055b7fc379547 llvm::FPPassManager::runOnFunction(llvm::Function&)
/home/nick/llvm-upstream/llvm/lib/IR/LegacyPassManager.cpp:1648:20
#15 0x000055b7fc3797ac llvm::FPPassManager::runOnModule(llvm::Module&)
/home/nick/llvm-upstream/llvm/lib/IR/LegacyPassManager.cpp:1684:13
#16 0x000055b7fc379bd6 (anonymous
namespace)::MPPassManager::runOnModule(llvm::Module&)
/home/nick/llvm-upstream/llvm/lib/IR/LegacyPassManager.cpp:1749:20
#17 0x000055b7fc37a338 llvm::legacy::PassManagerImpl::run(llvm::Module&)
/home/nick/llvm-upstream/llvm/lib/IR/LegacyPassManager.cpp:1862:13
#18 0x000055b7fc37a535 llvm::legacy::PassManager::run(llvm::Module&)
/home/nick/llvm-upstream/llvm/lib/IR/LegacyPassManager.cpp:1894:1
#19 0x000055b7fb4b7486 compileModule(char**, llvm::LLVMContext&)
/home/nick/llvm-upstream/llvm/tools/llc/llc.cpp:605:66
#20 0x000055b7fb4b5bff main
/home/nick/llvm-upstream/llvm/tools/llc/llc.cpp:355:35
#21 0x00007ff88e01cbbb __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x26bbb)
#22 0x000055b7fb4b402a _start (llvm-upstream/build/bin/llc+0x2ea702a)
The same b.ll file is a big strange, but this is the shortest I could get:
; ModuleID = 'b.bc'
source_filename = "module"
target triple = "x86_64-unknown-linux-gnu"
declare void @llvm.experimental.stackmap(i64, i32, ...)
define void @fn1774(i8* %0, i64 %base160) {
entry:
%local9 = alloca i32, align 4
call void (i64, i32, ...) @llvm.experimental.stackmap(i64 3280, i32 0, i32*
nonnull %local9)
%s188 = add i64 0, %base160
%s190 = add i64 %s188, 24
%s191 = inttoptr i64 %s190 to i64*
store i64 -99999, i64* %s191, align 4
%s194 = add i64 0, %base160
%s196 = add i64 %s194, 32
%s197 = inttoptr i64 %s196 to i64*
store i64 -99999, i64* %s197, align 4
%s200 = add i64 0, %base160
%s202 = add i64 %s200, 40
%s203 = inttoptr i64 %s202 to i64*
store i64 -99999, i64* %s203, align 4
%s206 = add i64 0, %base160
%s208 = add i64 %s206, 48
%s209 = inttoptr i64 %s208 to i64*
store i64 0, i64* %s209, align 4
%s236 = call i32 undef(i8* nonnull %0)
%s262 = add i64 0, %base160
%s264 = add i64 %s262, 24
%s265 = inttoptr i64 %s264 to i64*
store i64 -99999, i64* %s265, align 4
%s268 = add i64 0, %base160
%s270 = add i64 %s268, 32
%s271 = inttoptr i64 %s270 to i64*
store i64 -99999, i64* %s271, align 4
%s274 = add i64 0, %base160
%s276 = add i64 %s274, 40
%s277 = inttoptr i64 %s276 to i64*
store i64 -99999, i64* %s277, align 4
%s280 = add i64 0, %base160
%s282 = add i64 %s280, 48
%s283 = inttoptr i64 %s282 to i64*
store i64 0, i64* %s283, align 4
unreachable
}</pre>
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