[llvm-bugs] [Bug 48016] New: Assertion on arithmetic with sve-vector-bits
via llvm-bugs
llvm-bugs at lists.llvm.org
Thu Oct 29 16:35:59 PDT 2020
https://bugs.llvm.org/show_bug.cgi?id=48016
Bug ID: 48016
Summary: Assertion on arithmetic with sve-vector-bits
Product: clang
Version: unspecified
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: LLVM Codegen
Assignee: unassignedclangbugs at nondot.org
Reporter: craig.topper at gmail.com
CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
richard-llvm at metafoo.co.uk
This test case triggers an assertion in clang CodeGen. I don't know this is
valid code or not, but if it is invalid it should be diagnosed instead of
asserting.
clang -target aarch64-none-linux-gnu -march=armv8-a+sve -msve-vector-bits=128
#define N __ARM_FEATURE_SVE_BITS
typedef __SVInt8_t svint8_t;
typedef svint8_t fixed_int8_t __attribute__((arm_sve_vector_bits(N)));
svint8_t to_svint8_t(fixed_int8_t x) { return x * x; }
clang/lib/CodeGen/CGExpr.cpp:4902: clang::CodeGen::LValue
clang::CodeGen::CodeGenFunction::EmitBinaryOperatorLValue(const
clang::BinaryOperator*): Assertion `E->getOpcode() == BO_Assign && "unexpected
binary l-value"' failed.
PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash
backtrace, preprocessed source, and associated run script.
Stack dump:
0.
Program arguments: ./bin/clang -target aarch64-none-linux-gnu
-march=armv8-a+sve -msve-vector-bits=128 arm-casting.c -S -O2 -o -
1. <eof> parser at end of file
2. arm-casting.c:6:10: LLVM IR generation of declaration 'to_svint8_t'
3. arm-casting.c:6:10: Generating code
for declaration 'to_svint8_t'
#0
0x0000000002bd23ce llvm::sys::PrintStackTrace(llvm::raw_ostream&, int)
(./bin/clang+0x2bd23ce)
#1 0x0000000002bcfe4c
llvm::sys::RunSignalHandlers() (./bin/clang+0x2bcfe4c)
#2 0x0000000002bd0102 llvm::sys::CleanupOnSignal(unsigned long)
(./bin/clang+0x2bd0102)
#3 0x0000000002b3ea28
CrashRecoverySignalHandler(int) (./bin/clang+0x2b3ea28)
#4 0x00007ff1691c0390 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x11390)
#5 0x00007ff167f32438 raise
/build/glibc-e6zv40/glibc-2.23/signal/../sysdeps/unix/sysv/linux/raise.c:54:0
#6 0x00007ff167f3403a abort
/build/glibc-e6zv40/glibc-2.23/stdlib/abort.c:91:0
#7 0x00007ff167f2abe7 __assert_fail_base
/build/glibc-e6zv40/glibc-2.23/assert/assert.c:92:0
#8
0x00007ff167f2ac92 (/lib/x86_64-linux-gnu/libc.so.6+0x2dc92)
#9 0x0000000003118075
clang::CodeGen::CodeGenFunction::EmitBinaryOperatorLValue(clang::BinaryOperator
const*) (./bin/clang+0x3118075)
#10 0x000000000310d09e
clang::CodeGen::CodeGenFunction::EmitLValue(clang::Expr const*)
(./bin/clang+0x310d09e)
#11 0x00000000009d27c3 (anonymous
namespace)::ScalarExprEmitter::VisitCastExpr(clang::CastExpr*)
(./bin/clang+0x9d27c3)
#12 0x000000000314294d (anonymous
namespace)::ScalarExprEmitter::Visit(clang::Expr*) (./bin/clang+0x314294d)
#13 0x0000000003143086
clang::CodeGen::CodeGenFunction::EmitScalarExpr(clang::Expr const*, bool)
(./bin/clang+0x3143086)
#14 0x0000000002e904a5
clang::CodeGen::CodeGenFunction::EmitReturnStmt(clang::ReturnStmt const&)
(./bin/clang+0x2e904a5)
#15 0x0000000002e92359
clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*,
llvm::ArrayRef<clang::Attr const*>) (./bin/clang+0x2e92359)
#16 0x0000000002e93264
clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt
const&, bool, clang::CodeGen::AggValueSlot) (./bin/clang+0x2e93264)
#17 0x0000000002edeaa3
clang::CodeGen::CodeGenFunction::EmitFunctionBody(clang::Stmt const*)
(./bin/clang+0x2edeaa3)
#18 0x0000000002eee21b
clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl,
llvm::Function*, clang::CodeGen::CGFunctionInfo const&) (./bin/clang+0x2eee21b)
#19 0x0000000002f2a2b6
clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl,
llvm::GlobalValue*) (./bin/clang+0x2f2a2b6)
#20 0x0000000002f27d53
clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl,
llvm::GlobalValue*) (./bin/clang+0x2f27d53)
#21 0x0000000002f2840b
clang::CodeGen::CodeGenModule::EmitGlobal(clang::GlobalDecl)
(./bin/clang+0x2f2840b)
#22 0x0000000002f2e74a
clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl*)
(.part.5985.constprop.5989) (./bin/clang+0x2f2e74a)
#23 0x00000000039d7c9b (anonymous
namespace)::CodeGeneratorImpl::HandleTopLevelDecl(clang::DeclGroupRef)
(./bin/clang+0x39d7c9b)
#24 0x00000000039ce0fb
clang::BackendConsumer::HandleTopLevelDecl(clang::DeclGroupRef)
(./bin/clang+0x39ce0fb)
#25 0x00000000043aca10 clang::ParseAST(clang::Sema&,
bool, bool) (./bin/clang+0x43aca10)
#26
0x00000000039d5505 clang::CodeGenAction::ExecuteAction()
(./bin/clang+0x39d5505)
#27 0x00000000033cc7d9
clang::FrontendAction::Execute() (./bin/clang+0x33cc7d9)
#28 0x000000000338a570
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(./bin/clang+0x338a570)
#29 0x0000000003474ef3
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(./bin/clang+0x3474ef3)
#30 0x0000000000b459e4
cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (./bin/clang+0xb459e4
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