[LLVMbugs] [Bug 22883] New: Assertion `(InputFlag & ~0xffff) == 0 && "High bits already contain data"' failed.
bugzilla-daemon at llvm.org
bugzilla-daemon at llvm.org
Thu Mar 12 09:12:39 PDT 2015
https://llvm.org/bugs/show_bug.cgi?id=22883
Bug ID: 22883
Summary: Assertion `(InputFlag & ~0xffff) == 0 && "High bits
already contain data"' failed.
Product: new-bugs
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: unassignedbugs at nondot.org
Reporter: sami.liedes at iki.fi
CC: llvmbugs at cs.uiuc.edu
Classification: Unclassified
My bot[1], which runs clang trunk on ~11k fuzzer-generated test cases that have
at some point crashed clang, detected that r232027 causes a new assertion
failure.
The offending commit was:
------------------------------------------------------------
Author: Daniel Sanders <daniel.sanders at imgtec.com>
Date: Thu Mar 12 11:00:48 2015 +0000
Add infrastructure for support of multiple memory constraints.
Summary:
The operand flag word for ISD::INLINEASM nodes now contains a 15-bit
memory constraint ID when the operand kind is Kind_Mem. This constraint
ID is a numeric equivalent to the constraint code string and is converted
with a target specific hook in TargetLowering.
This patch maps all memory constraints to InlineAsm::Constraint_m so there
is no functional change at this point. It just proves that using these
previously unused bits in the encoding of the flag word doesn't break
anything.
The next patch will make each target preserve the current mapping of
everything to Constraint_m for itself while changing the target independent
implementation of the hook to return Constraint_Unknown appropriately. Each
target will then be adapted in separate patches to use appropriate
Constraint_*
values.
Reviewers: hfinkel
Reviewed By: hfinkel
Subscribers: hfinkel, jholewinski, llvm-commits
Differential Revision: http://reviews.llvm.org/D8171
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232027
91177308-0d34-0410-b5e6-96231b3b80d8
------------------------------------------------------------
Here is a test case to trigger the assertion:
------------------------------------------------------------
int l;
void fn1() { __asm__("" : "+r,m"(l)); }
------------------------------------------------------------
Stack trace:
------------------------------------------------------------
clang-3.7:
/home/sliedes/scratch/build/clang-triage/llvm.src/include/llvm/IR/InlineAsm.h:262:
static unsigned int llvm::InlineAsm::getFlagWordForMatchingOp(unsigned int,
unsigned int): Assertion `(InputFlag & ~0xffff) == 0 && "High bits already
contain data"' failed.
#0 0x144395a llvm::sys::PrintStackTrace(llvm::raw_ostream&)
/home/sliedes/scratch/build/clang-triage/llvm.src/lib/Support/Unix/Signals.inc:424:15
#1 0x144520b SignalHandler(int)
/home/sliedes/scratch/build/clang-triage/llvm.src/lib/Support/Unix/Signals.inc:199:3
#2 0x7f627c31a8d0 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0xf8d0)
#3 0x7f627b55a107 gsignal
/build/glibc-Y1PEyp/glibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#4 0x7f627b55b4e8 abort /build/glibc-Y1PEyp/glibc-2.19/stdlib/abort.c:91:0
#5 0x7f627b553226 __assert_fail_base
/build/glibc-Y1PEyp/glibc-2.19/assert/assert.c:92:0
#6 0x7f627b5532d2 (/lib/x86_64-linux-gnu/libc.so.6+0x2e2d2)
#7 0x175b7e9 llvm::InlineAsm::getFlagWord(unsigned int, unsigned int)
/home/sliedes/scratch/build/clang-triage/llvm.src/include/llvm/IR/InlineAsm.h:251:5
#8 0x175b7e9 llvm::SelectionDAGBuilder::visitInlineAsm(llvm::ImmutableCallSite)
/home/sliedes/scratch/build/clang-triage/llvm.src/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp:6737:0
#9 0x1745d52 llvm::Value::getValueID() const
/home/sliedes/scratch/build/clang-triage/llvm.src/include/llvm/IR/Value.h:367:12
#10 0x1745d52 llvm::Instruction::getOpcode() const
/home/sliedes/scratch/build/clang-triage/llvm.src/include/llvm/IR/Instruction.h:92:0
#11 0x1745d52 llvm::Instruction::isTerminator() const
/home/sliedes/scratch/build/clang-triage/llvm.src/include/llvm/IR/Instruction.h:95:0
#12 0x1745d52 llvm::TerminatorInst::classof(llvm::Instruction const*)
/home/sliedes/scratch/build/clang-triage/llvm.src/include/llvm/IR/InstrTypes.h:73:0
#13 0x1745d52 llvm::isa_impl<llvm::TerminatorInst, llvm::Instruction,
void>::doit(llvm::Instruction const&)
/home/sliedes/scratch/build/clang-triage/llvm.src/include/llvm/Support/Casting.h:56:0
#14 0x1745d52 llvm::isa_impl_cl<llvm::TerminatorInst, llvm::Instruction
const*>::doit(llvm::Instruction const*)
/home/sliedes/scratch/build/clang-triage/llvm.src/include/llvm/Support/Casting.h:96:0
#15 0x1745d52 llvm::isa_impl_wrap<llvm::TerminatorInst, llvm::Instruction
const*, llvm::Instruction const*>::doit(llvm::Instruction const* const&)
/home/sliedes/scratch/build/clang-triage/llvm.src/include/llvm/Support/Casting.h:122:0
#16 0x1745d52 llvm::isa_impl_wrap<llvm::TerminatorInst, llvm::Instruction
const* const, llvm::Instruction const*>::doit(llvm::Instruction const* const&)
/home/sliedes/scratch/build/clang-triage/llvm.src/include/llvm/Support/Casting.h:112:0
#17 0x1745d52 bool llvm::isa<llvm::TerminatorInst, llvm::Instruction
const*>(llvm::Instruction const* const&)
/home/sliedes/scratch/build/clang-triage/llvm.src/include/llvm/Support/Casting.h:133:0
#18 0x1745d52 llvm::SelectionDAGBuilder::visit(llvm::Instruction const&)
/home/sliedes/scratch/build/clang-triage/llvm.src/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp:969:0
#19 0x1786fc8 llvm::ilist_node<llvm::Instruction>::getNext() const
/home/sliedes/scratch/build/clang-triage/llvm.src/include/llvm/ADT/ilist_node.h:48:42
#20 0x1786fc8
llvm::ilist_nextprev_traits<llvm::Instruction>::getNext(llvm::Instruction
const*)
/home/sliedes/scratch/build/clang-triage/llvm.src/include/llvm/ADT/ilist.h:60:0
#21 0x1786fc8 llvm::ilist_iterator<llvm::Instruction const>::operator++()
/home/sliedes/scratch/build/clang-triage/llvm.src/include/llvm/ADT/ilist.h:219:0
#22 0x1786fc8
llvm::SelectionDAGISel::SelectBasicBlock(llvm::ilist_iterator<llvm::Instruction
const>, llvm::ilist_iterator<llvm::Instruction const>, bool&)
/home/sliedes/scratch/build/clang-triage/llvm.src/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:601:0
#23 0x17866a9 llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function
const&)
/home/sliedes/scratch/build/clang-triage/llvm.src/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:1272:15
#24 0x1783574
llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&)
/home/sliedes/scratch/build/clang-triage/llvm.src/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:464:33
#25 0xc887f1 (anonymous
namespace)::X86DAGToDAGISel::runOnMachineFunction(llvm::MachineFunction&)
/home/sliedes/scratch/build/clang-triage/llvm.src/lib/Target/X86/X86ISelDAGToDAG.cpp:168:25
#26 0xf4748c llvm::MachineFunctionPass::runOnFunction(llvm::Function&)
/home/sliedes/scratch/build/clang-triage/llvm.src/lib/CodeGen/MachineFunctionPass.cpp:41:1
#27 0x116c692 llvm::FPPassManager::runOnFunction(llvm::Function&)
/home/sliedes/scratch/build/clang-triage/llvm.src/lib/IR/LegacyPassManager.cpp:1538:23
#28 0x116c8cb llvm::FPPassManager::runOnModule(llvm::Module&)
/home/sliedes/scratch/build/clang-triage/llvm.src/lib/IR/LegacyPassManager.cpp:1558:5
#29 0x116ccd5 (anonymous namespace)::MPPassManager::runOnModule(llvm::Module&)
/home/sliedes/scratch/build/clang-triage/llvm.src/lib/IR/LegacyPassManager.cpp:1616:23
#30 0x116ccd5 llvm::legacy::PassManagerImpl::run(llvm::Module&)
/home/sliedes/scratch/build/clang-triage/llvm.src/lib/IR/LegacyPassManager.cpp:1723:0
#31 0x18301dd (anonymous
namespace)::EmitAssemblyHelper::EmitAssembly(clang::BackendAction,
llvm::raw_ostream*)
/home/sliedes/scratch/build/clang-triage/llvm.src/tools/clang/lib/CodeGen/BackendUtil.cpp:639:3
#32 0x18301dd clang::EmitBackendOutput(clang::DiagnosticsEngine&,
clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions
const&, llvm::StringRef, llvm::Module*, clang::BackendAction,
llvm::raw_ostream*)
/home/sliedes/scratch/build/clang-triage/llvm.src/tools/clang/lib/CodeGen/BackendUtil.cpp:650:0
#33 0x1822df5 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
/home/sliedes/scratch/build/clang-triage/llvm.src/tools/clang/lib/CodeGen/CodeGenAction.cpp:178:7
#34 0x1af6b43 void std::swap<bool>(bool&, bool&)
/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../include/c++/4.9/bits/move.h:177:7
#35 0x1af6b43 clang::ParseAST(clang::Sema&, bool, bool)
/home/sliedes/scratch/build/clang-triage/llvm.src/tools/clang/lib/Parse/ParseAST.cpp:153:0
#36 0x15c267e clang::FrontendAction::Execute()
/home/sliedes/scratch/build/clang-triage/llvm.src/tools/clang/lib/Frontend/FrontendAction.cpp:443:7
#37 0x1595a0c clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
/home/sliedes/scratch/build/clang-triage/llvm.src/tools/clang/lib/Frontend/CompilerInstance.cpp:807:7
#38 0x163f8dc clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
/home/sliedes/scratch/build/clang-triage/llvm.src/tools/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:222:18
#39 0x6dd752 cc1_main(llvm::ArrayRef<char const*>, char const*, void*)
/home/sliedes/scratch/build/clang-triage/llvm.src/tools/clang/tools/driver/cc1_main.cpp:110:13
#40 0x6dc492 ExecuteCC1Tool(llvm::ArrayRef<char const*>, llvm::StringRef)
/home/sliedes/scratch/build/clang-triage/llvm.src/tools/clang/tools/driver/driver.cpp:369:12
#41 0x6dc492 main
/home/sliedes/scratch/build/clang-triage/llvm.src/tools/clang/tools/driver/driver.cpp:415:0
#42 0x7f627b546b45 __libc_start_main
/build/glibc-Y1PEyp/glibc-2.19/csu/libc-start.c:321:0
#43 0x6d992d _start
(/media/ssd_plain/sliedes/build/clang-triage/clang-triage.ninja/bin/clang-3.7+0x6d992d)
Stack dump:
0. Program arguments:
/media/ssd_plain/sliedes/build/clang-triage/clang-triage.ninja/bin/clang-3.7
-cc1 -triple x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free
-main-file-name - -mrelocation-model static -mthread-model posix
-mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases
-munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info
-coverage-file /dev/null -resource-dir
/media/ssd_plain/sliedes/build/clang-triage/clang-triage.ninja/bin/../lib/clang/3.7.0
-internal-isystem /usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../include/c++/4.9
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../include/x86_64-linux-gnu/c++/4.9
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../include/x86_64-linux-gnu/c++/4.9
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../include/c++/4.9/backward
-internal-isystem /usr/local/include -internal-isystem
/media/ssd_plain/sliedes/build/clang-triage/clang-triage.ninja/bin/../lib/clang/3.7.0/include
-internal-externc-isystem /usr/include/x86_64-linux-gnu
-internal-externc-isystem /include -internal-externc-isystem /usr/include
-Werror -std=c++11 -fdeprecated-macro -fdebug-compilation-dir / -ferror-limit 5
-fmessage-length 0 -mstackrealign -fobjc-runtime=gcc -fcxx-exceptions
-fexceptions -fdiagnostics-show-option -o /dev/null -x c++ -
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module '-'.
4. Running pass 'X86 DAG->DAG Instruction Selection' on function '@_Z2f2v'
clang-3.7: error: unable to execute command: Aborted
clang-3.7: error: clang frontend command failed due to signal (use -v to see
invocation)
------------------------------------------------------------
[1] http://sli.dy.fi/~sliedes/clang-triage/triage_report.xhtml#changes
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