Summary:
UBSan was checking for alignment of the derived class on the pointer to
the base class, before converting. With some class hierarchies, this could
generate false positives.
Added test-case.
llvm-svn: 187948
These flags set some preprocessor macros and injects a dependency
on the runtime library into the object file, which later is picked up
by the linker.
This also adds a new CC1 flag for adding a dependent library.
Differential Revision: http://llvm-reviews.chandlerc.com/D1315
llvm-svn: 187945
DataFlowSanitizer is a generalised dynamic data flow analysis.
Unlike other Sanitizer tools, this tool is not designed to detect a
specific class of bugs on its own. Instead, it provides a generic
dynamic data flow analysis framework to be used by clients to help
detect application-specific issues within their own code.
Differential Revision: http://llvm-reviews.chandlerc.com/D966
llvm-svn: 187925
This field is just IsDefaulted && !IsDeleted; in all places it's used,
a simple check for isDefaulted() is superior anyway, and we were forgetting
to set it in a few cases.
Also eliminate CXXDestructorDecl::IsImplicitlyDefined, for the same reasons.
No intended functionality change.
llvm-svn: 187891
Without an ODR, the -flimit-debug-info debug info size optimization of
emitting declarations for fully defined types when only a declaration is
needed by the TU, is incorrect. Emit the full definition whenever it's
available in non-C++.
llvm-svn: 187611
We emit definitions with no members when a nested type is
referenced/required (GCC does the same, to be fair) but failed to attach
the template arguments in such a case.
llvm-svn: 187608
Patch by Ana Pazos
- Completed implementation of instruction formats:
AdvSIMD three same
AdvSIMD modified immediate
AdvSIMD scalar pairwise
- Completed implementation of instruction classes
(some of the instructions in these classes
belong to yet unfinished instruction formats):
Vector Arithmetic
Vector Immediate
Vector Pairwise Arithmetic
- Initial implementation of instruction formats:
AdvSIMD scalar two-reg misc
AdvSIMD scalar three same
- Intial implementation of instruction class:
Scalar Arithmetic
- Initial clang changes to support arm v8 intrinsics.
Note: no clang changes for scalar intrinsics function name mangling yet.
- Comprehensive test cases for added instructions
To verify auto codegen, encoding, decoding, diagnosis, intrinsics.
llvm-svn: 187568
Previously a 2-bit mask was used to mask each element of a vec6 mask before doing the extracts instead of 3-bit mask necessary to cover 0-5. vec3 was the only non-power-of-2 that worked correctly because a +1 conditionally added before calculating floor(log2(elements)).
llvm-svn: 187560
Restore it after each argument is emitted. This fixes the scope info for
inlined subroutines inside of function argument expressions. (E.g.,
anything STL).
rdar://problem/12592135
llvm-svn: 187240
This patch provides basic support for powerpc64le as an LLVM target.
However, use of this target will not actually generate little-endian
code. Instead, use of the target will cause the correct little-endian
built-in defines to be generated, so that code that tests for
__LITTLE_ENDIAN__, for example, will be correctly parsed for
syntax-only testing. Code generation will otherwise be the same as
powerpc64 (big-endian), for now.
The patch leaves open the possibility of creating a little-endian
PowerPC64 back end, but there is no immediate intent to create such a
thing.
The new test case variant ensures that correct built-in defines for
little-endian code are generated.
llvm-svn: 187180
This allows the ObjFW runtime to correctly implement message forwarding
for messages which return a struct.
Patch by Jonathan Schleifer.
llvm-svn: 187174
only affect functions without a separate return block. This fixes the
linetable for void functions with cleanups and multiple returns.
llvm-svn: 187090
r186899 and r187061 added a preferred way for some architectures not to get
intrinsic generation for math builtins. So the code changes in r185568 can
now be undone (the test remains).
llvm-svn: 187079
Before this change, Clang uses the x86 representation for C++ method
pointers when generating code for PNaCl. However, the resulting code
will assume that function pointers are 0 mod 2. This assumption is
not safe for PNaCl, where function pointers could have any value
(especially in future sandboxing models).
So, switch to using the ARM representation for PNaCl code, which makes
no assumptions about the alignment of function pointers.
Since we're changing the "le32" target, this change also applies to
Emscripten. The change is beneficial for Emscripten too. Emscripten
has a workaround to make function pointers 0 mod 2. This change would
allow the workaround to be removed.
See: https://code.google.com/p/nativeclient/issues/detail?id=3450
llvm-svn: 187051
The 64-bit PowerPC ELF ABI requires a struct that contains a single
vector member to be passed in a vector register as though the wrapping
struct were not present. Instead we were passing this as a byval
struct.
The same logic was already present for floating-point arguments, so
this patch just extends the logic to handle vector types. The new
test case verifies that clang coerces the parameter and annotates it
as inreg.
Thanks,
Bill
llvm-svn: 186993
Based on Peter Collingbourne's destructor patches.
Prior to this change, clang was considering ?1 to be the complete
destructor and the base destructor, which was wrong. This lead to
crashes when clang tried to emit two LLVM functions with the same name.
In this ABI, TUs with non-inline dtors might not emit a complete
destructor. They are emitted as inline thunks in TUs that need them,
and they always delegate to the base dtors of the complete class and its
virtual bases. This change uses the DeferredDecls machinery to emit
complete dtors as needed.
Currently in clang try body destructors can catch exceptions thrown by
virtual base destructors. In the Microsoft C++ ABI, clang may not have
the destructor definition, in which case clang won't wrap the virtual
virtual base destructor calls in a try-catch. Diagnosing this in user
code is TODO.
Finally, for classes that don't use virtual inheritance, MSVC always
calls the base destructor (?1) directly. This is a useful code size
optimization that avoids emitting lots of extra thunks or aliases.
Implementing it also means our existing tests continue to pass, and is
consistent with MSVC's output.
We can do the same for Itanium by tweaking GetAddrOfCXXDestructor, but
it will require further testing.
Reviewers: rjmccall
CC: cfe-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D1066
llvm-svn: 186828
optimize, to follow the permissions granted in N3664. Under those rules, only
calls generated by new-expressions and delete-expressions are permitted to be
optimized, and direct calls to ::operator new and ::operator delete must be
treated as normal calls.
llvm-svn: 186799
This is the same way GenericSelectionExpr works, and it's generally a
more consistent approach.
A large part of this patch is devoted to caching the value of the condition
of a ChooseExpr; it's needed to avoid threading an ASTContext into
IgnoreParens().
Fixes <rdar://problem/14438917>.
llvm-svn: 186738
use the conversion to bool to check if we've managed to get a type
that isn't default constructed - as we meant to in the first place.
llvm-svn: 186556
inspired by CodegenFunction::LexicalScope.
- NoLocation temporarily turns off debug locations altogether.
This is useful for emitting instructions that should be
counted towards the function prologue.
- BuiltinLocation temporarily switches to an artificial debug location
that has a valid scope, but no line information. This is useful when
emitting compiler-generated helper functions that have no source
location associated with them.
llvm-svn: 186552
Filipe Cabecinhas