Summary:
The issue arises because LLDB is not
able to read the vdso library correctly.
The fix adds memory allocation callbacks
to allocate sufficient memory in case the
requested offsets don't fit in the memory
buffer allocated for the ELF.
Reviewers: lldb-commits, clayborg, deepak2427, ovyalov, labath, tberghammer
Differential Revision: http://reviews.llvm.org/D16107
llvm-svn: 258122
TestHelloWorld seems to be passing now as far as I can tell. TestExitDuringStep is still hanging.
I have marked the relevant tests as flaky, which should handle the timeouts now as well. I'll be
monitoring the buildbots for fallout.
llvm-svn: 258114
The ELF symbol table always contain the size of the symbols so we
don't have to try to guess them based on the address of the next
symbol (it is needed for mach-o).
The change fixes an issue when a symbol is removed after a 0 size
symbol (e.g. because the second one is not public) what previously
caused the symbol lookup algorithm to end up with showing the 0 size
symbol even for the later addresses (what are not part of any symbol).
That symbol lookup error can confuse the user and also confuses the
current stack unwinder.
Re-commit this CL after fixing the issue with gcc-4.9.2 on i386 Linux.
Differential revision: http://reviews.llvm.org/D16186
llvm-svn: 258113
This commit changes the default on our lowering of vectors-of-pointers from splitting in RS4GC to reporting them in the final stack map. All of the changes to do so are already in place and tested. Assuming no problems are unearthed in the next week, we will be deleting the old code entirely next Monday.
llvm-svn: 258111
Or, do not set Sema's CurContext to the template declaration's when substituting into default template arguments of said template declaration.
If we do push the template declaration context on to Sema, and the template declaration is at namespace scope, Sema can get confused and try and do odr analysis when substituting into default template arguments, even though the substitution could be occurring within a dependent context.
I'm not sure why this was being done, perhaps there was concern that if a default template argument referred to a previous template parameter, it might not be found during substitution - but all regression tests pass, and I can't craft a test that would cause it to fails (if some one does, please inform me, and i'll craft a different fix for the PR).
This patch removes a single line of code, but unfortunately adds more than it removes, because of the tests. Some day I still hope to commit a patch that removes far more lines than it adds, while leaving clang better for it ;)
Sorry that r253590 ("Change the expression evaluation context from Unevaluated to ConstantEvaluated while substituting into non-type template argument defaults") caused the PR!
llvm-svn: 258110
Combine a bunch of small files into a single, still rather small, file. The primary purpose of this is to get all of the static initializers into a single file so as to have a well defined order of initialization.
llvm-svn: 258109
In Polly, after hoisting loop invariant loads outside loop, the alignment
information for hoisted loads are missing, this patch restore them.
Contributed-by: Lawrence Hu <lawrence@codeaurora.org>
Differential Revision: http://reviews.llvm.org/D16160
llvm-svn: 258105
Summary:
This is a companion patch for http://reviews.llvm.org/D16124.
Internalized symbols increase the size of strongly-connected components in
SCC-based module splitting and thus reduce the amount of parallelism. This
patch records the original linkage of non-local symbols prior to
internalization and then restores it just before splitting/CodeGen. This is
also useful for cases where the linker requires symbols to remain external, for
instance, so they can be placed according to linker script rules.
It's currently under its own flag (-restore-globals) but should eventually
share a common flag with D16124.
Reviewers: joker.eph, pcc
Subscribers: slarin, llvm-commits, joker.eph
Differential Revision: http://reviews.llvm.org/D16229
llvm-svn: 258100
This breaks the tests that were meant for testing
64-bit inline immediates, so move those to shl where
they won't be broken up.
This should be repeated for the other related bit ops.
llvm-svn: 258095
Although glibc defines it, this is currently of no use for my primary
use-case (dumping DT_* keys correctly). Its semantic is not described
anywhere I can find, so better leave it out for now.
Thanks to Rafael for pointing out in his post-commit review!
llvm-svn: 258089
Summary:
Currently llvm::SplitModule as the first step globalizes all local objects, which might not be desirable in some scenarios.
This change adds a new flag to llvm::SplitModule that uses SCC approach to search for a balanced partition without the need to externalize symbols.
Such partition might not be possible or fully balanced for a given number of partitions, and is a function of the module properties (global/local dependencies within the module).
Joint development Tobias Edler von Koch (tobias@codeaurora.org) and Sergei Larin (slarin@codeaurora.org)
Subscribers: llvm-commits, joker.eph
Differential Revision: http://reviews.llvm.org/D16124
llvm-svn: 258083
AVX2 can only broadcast from the zero'th element of a vector, but if the broadcastable element is the zero'th element of a 128-bit subvector its advantageous to extract the subvector, broadcast from that and avoid the loading of shuffle mask data that would be needed for VPERMPS/VPERMD. The only exception being when the source type is 4f64 or 4i64 which can directly use the immediate shuffle VPERMPD/VPERMQ directly.
Differential Revision: http://reviews.llvm.org/D16050
llvm-svn: 258081
Dan Gohman