[llvm] r191287 - [msan] Handling of atomic load/store, atomic rmw, cmpxchg.

[Gao, Yunzhong]

I think this is caused by r191277. I have notified Takumi-san but I have yet to hear back.
http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20130923/089413.html
- Gao


> -----Original Message-----
> From: llvm-commits-bounces at cs.uiuc.edu [mailto:llvm-commits-
> bounces at cs.uiuc.edu] On Behalf Of Evgeniy Stepanov
> Sent: Wednesday, September 25, 2013 2:06 AM
> To: Johannes Obermayr
> Cc: llvm-commits
> Subject: Re: [llvm] r191287 - [msan] Handling of atomic load/store, atomic
> rmw, cmpxchg.
> 
> Btw, there are similar warnings from other parts of LLVM when building with
> gcc.
> 
> ../tools/clang/lib/CodeGen/CGBuiltin.cpp: In function
> ‘llvm::VectorType* GetNeonType(clang::CodeGen::CodeGenFunction*,
> clang::NeonTypeFlags, bool)’:
> ../tools/clang/lib/CodeGen/CGBuiltin.cpp:1628:1: warning: control reaches
> end of non-void function [-Wreturn-type]
> 
> Is this not an issue for some reason?
> 
> 
> On Wed, Sep 25, 2013 at 1:00 PM, Evgeniy Stepanov
> <eugeni.stepanov at gmail.com> wrote:
> > r191361.
> >
> > On Wed, Sep 25, 2013 at 3:11 AM, Johannes Obermayr
> > <johannesobermayr at gmx.de> wrote:
> >> This commit introduces following build error on openSUSE:
> >>
> >> lib/Transforms/Instrumentation/MemorySanitizer.cpp: In member
> function 'llvm::AtomicOrdering
> {anonymous}::MemorySanitizerVisitor::addAcquireOrdering(llvm::AtomicOrd
> ering)':
> >> lib/Transforms/Instrumentation/MemorySanitizer.cpp:937:3: warning:
> >> control reaches end of non-void function [-Wreturn-type]
> >> lib/Transforms/Instrumentation/MemorySanitizer.cpp: In member
> function 'llvm::AtomicOrdering
> {anonymous}::MemorySanitizerVisitor::addReleaseOrdering(llvm::AtomicOr
> dering)':
> >> lib/Transforms/Instrumentation/MemorySanitizer.cpp:921:3: warning:
> >> control reaches end of non-void function [-Wreturn-type]
> >>
> >> ... testing for serious compiler warnings
> >> I: Program returns random data in a function
> >> E: llvm no-return-in-nonvoid-function
> >>
> /home/abuild/rpmbuild/BUILD/llvm/lib/Transforms/Instrumentation/Memo
> r
> >> ySanitizer.cpp:937, 921
> >>
> >> Please add a return value in default: switch or after switch{}.
> 
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