r224351 causing crashes while building ICU

[Quentin Colombet]

Should be fixed by r224402.

Sorry for the breakage, the think-o was obvious :S.

Q.
On Dec 16, 2014, at 4:59 PM, Quentin Colombet <qcolombet at apple.com> wrote:

> Good catch.
> 
> Looking into it.
> 
> Q.
>> On Dec 16, 2014, at 4:43 PM, Reid Kleckner <rnk at google.com> wrote:
>> 
>> It reduces down to a very boring vector zext:
>> target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
>> target triple = "x86_64-unknown-linux-gnu"
>> 
>> define void @f()  {
>> entry:
>>   %a = shl nuw nsw <2 x i32> zeroinitializer, <i32 8, i32 8>
>>   %b = zext <2 x i32> %a to <2 x i64>
>>   ret void
>> }
>> 
>> On Tue, Dec 16, 2014 at 4:36 PM, Reid Kleckner <rnk at google.com> wrote:
>> Here is a single function .ll file that reproduces the crash in CodeGenPrep. It's extracted from ICU. It still needs to be reduced, probably with bugpoint.
>> 
>> On Tue, Dec 16, 2014 at 4:28 PM, Reid Kleckner <rnk at google.com> wrote:
>> I plan to revert it, as the mailing lists are down and it's hard to discover these kinds of failures without them.
>> 
>> I'll try to get you a reproducer. There's a bad cast with this stack trace:
>> clang: third_party/llvm/llvm/include/llvm/Support/Casting.h:237: typename cast_retty<X, Y *>::ret_type llvm::cast(Y *) [X = llvm::Instruction, Y = llvm::Value]: Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed.
>> 
>> Program received signal SIGABRT, Aborted.
>> 0x00007ffff732d6db in raise () from /usr/grte/v4/lib64/libc.so.6
>> (gdb) bt
>> #0  0x00007ffff732d6db in raise () from /usr/grte/v4/lib64/libc.so.6
>> #1  0x00007ffff732f3ef in abort () from /usr/grte/v4/lib64/libc.so.6
>> #2  0x00007ffff73262a9 in __assert_fail_base () from /usr/grte/v4/lib64/libc.so.6
>> #3  0x00007ffff7326353 in __assert_fail () from /usr/grte/v4/lib64/libc.so.6
>> #4  0x000000000059ce69 in llvm::cast_retty<llvm::Instruction, llvm::Value*>::ret_type llvm::cast<llvm::Instruction, llvm::Value>(llvm::Value*) ()
>> #5  0x0000000002ea8346 in (anonymous namespace)::TypePromotionHelper::promoteOperandForOther(llvm::Instruction*, (anonymous namespace)::TypePromotionTransaction&, llvm::DenseMap<llvm::Instruction*, (anonymous namespace)::TypeIsSExt, llvm::DenseMapInfo<llvm::Instruction*>, llvm::detail::DenseMapPair<llvm::Instruction*, (anonymous namespace)::TypeIsSExt> >&, unsigned int&, llvm::SmallVectorImpl<llvm::Instruction*>*, llvm::SmallVectorImpl<llvm::Instruction*>*, bool) ()
>> #6  0x0000000002ea7c89 in (anonymous namespace)::TypePromotionHelper::zeroExtendOperandForOther(llvm::Instruction*, (anonymous namespace)::TypePromotionTransaction&, llvm::DenseMap<llvm::Instruction*, (anonymous namespace)::TypeIsSExt, llvm::DenseMapInfo<llvm::Instruction*>, llvm::detail::DenseMapPair<llvm::Instruction*, (anonymous namespace)::TypeIsSExt> >&, unsigned int&, llvm::SmallVectorImpl<llvm::Instruction*>*, llvm::SmallVectorImpl<llvm::Instruction*>*) ()
>> #7  0x0000000002eaf016 in (anonymous namespace)::CodeGenPrepare::ExtLdPromotion((anonymous namespace)::TypePromotionTransaction&, llvm::LoadInst*&, llvm::Instruction*&, llvm::SmallVectorImpl<llvm::Instruction*> const&, unsigned int) ()
>> #8  0x0000000002e9f163 in (anonymous namespace)::CodeGenPrepare::MoveExtToFormExtLoad(llvm::Instruction*&) ()
>> #9  0x0000000002e9def3 in (anonymous namespace)::CodeGenPrepare::OptimizeInst(llvm::Instruction*) ()
>> #10 0x0000000002e9d9f6 in (anonymous namespace)::CodeGenPrepare::OptimizeBlock(llvm::BasicBlock&) ()
>> #11 0x0000000002e9bdb7 in (anonymous namespace)::CodeGenPrepare::runOnFunction(llvm::Function&) ()
>> #12 0x0000000003896a0d in llvm::FPPassManager::runOnFunction(llvm::Function&) ()
>> #13 0x0000000003896d18 in llvm::FPPassManager::runOnModule(llvm::Module&) ()
>> #14 0x00000000038973d9 in (anonymous namespace)::MPPassManager::runOnModule(llvm::Module&) ()
>> #15 0x0000000003896fce in llvm::legacy::PassManagerImpl::run(llvm::Module&) ()
>> #16 0x0000000003897881 in llvm::legacy::PassManager::run(llvm::Module&) ()
>> #17 0x000000000045af33 in (anonymous namespace)::EmitAssemblyHelper::EmitAssembly(clang::BackendAction, llvm::raw_ostream*) ()
>> #18 0x000000000045a862 in clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::raw_ostream*) ()
>> #19 0x0000000000436bb3 in clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) ()
>> #20 0x000000000170635b in clang::ParseAST(clang::Sema&, bool, bool) ()
>> #21 0x00000000013bcc29 in clang::ASTFrontendAction::ExecuteAction() ()
>> #22 0x00000000004347a1 in clang::CodeGenAction::ExecuteAction() ()
>> #23 0x00000000013bc710 in clang::FrontendAction::Execute() ()
>> #24 0x000000000126fc1b in clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) ()
>> #25 0x000000000042f4a8 in clang::ExecuteCompilerInvocation(clang::CompilerInstance*) ()
>> #26 0x0000000000416c67 in cc1_main(llvm::ArrayRef<char const*>, char const*, void*) ()
>> #27 0x0000000000426f93 in ExecuteCC1Tool(llvm::ArrayRef<char const*>, llvm::StringRef) ()
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20141216/d19c67c1/attachment.html>