The use of the DbgLoc in FastISel is probably something we should fix.
It's prone to leaking the wrong location into instructions - we should
have a clear chain of custody from the debug location of an IR
Instruction to that of a MachineInstr to avoid such leakage.
llvm-svn: 227481
Work around a bug in GNU ld (and gold) linker versions up to 2.25
that may mis-optimize code generated by this version of clang/LLVM
to access general-dynamic or local-dynamic TLS variables.
Bug is fixed here:
https://sourceware.org/ml/binutils/2015-01/msg00318.html
llvm-svn: 227480
Certain aspects of llvm-pdbdump require language support only present in
MSVC 2013 and higher. Since this is strictly a utility, and since we hope
to drop support for MSVC 2012 soon, don't build this unless MSVC 2013 or
higher.
llvm-svn: 227479
Any code creating an MCSectionELF knows ELF and already provides the flags.
SectionKind is an abstraction used by common code that uses a plain
MCSection.
Use the flags to compute the SectionKind. This removes a lot of
guessing and boilerplate from the MCSectionELF construction.
llvm-svn: 227476
It should bring the bots back.
Original messagses:
r227448:
Remove unnecessary default.
r227438:
Fix Index/print-type.cpp test following r227432.
r227432:
libclang: Add three functions useful for dealing with anonymous fields:
clang_Cursor_getOffsetOfField
clang_Cursor_isAnonymous
clang_Type_visitFields
Python: Add corresponding methods for dealing with anonymous fields.
Patch by Loïc Jaquemet
llvm-svn: 227472
For large stack offsets the compiler generates multiple immediate mode
sub/add instructions in the prologue/epilogue. This patch makes the
compiler place the final amount to be added/subtracted into a register,
which is then added/substracted with a single operation.
Differential Revision: http://reviews.llvm.org/D7226
llvm-svn: 227458
Patch by Nemanja Ivanovic.
As was uncovered by the failing test case (when run on non-PPC
platforms), the feature set when compiling with -march=ppc64le was not
being picked up. This change ensures that if the -mcpu option is not
specified, the correct feature set is picked up regardless of whether
we are on PPC or not.
llvm-svn: 227455
Summary:
Ignore C-style casts in extern "C" {} sections. Be more careful when
detecting redundant casts between typedefs to the same type - emit a more
specific warning and don't automatically fix them.
Reviewers: klimek
Reviewed By: klimek
Subscribers: curdeius, cfe-commits
Differential Revision: http://reviews.llvm.org/D7247
llvm-svn: 227444
reroll() was slightly monolithic and a pain to modify. Refactor
a bunch of its state from local variables to member variables
of a helper class, and do some trivial simplification while we're
there.
llvm-svn: 227439
I have so far not succeeded in finding a nicely reduced test case or an
observable difference which could help me create a test failure without
msan.
Committing without test to unblock kcc's further fuzzing progress.
llvm-svn: 227433
ELF has support for sections that can be split into fixed size or
null terminated entities.
Since these sections can be split by the linker, it is not necessary
to split them in codegen.
This reduces the combined .o size in a llvm+clang build from
202,394,570 to 173,819,098 bytes.
The time for linking clang with gold (on a VM, on a laptop) goes
from 2.250089985 to 1.383001792 seconds.
The flip side is the size of rodata in clang goes from 10,926,785
to 10,929,345 bytes.
The increase seems to be because of http://sourceware.org/bugzilla/show_bug.cgi?id=17902.
llvm-svn: 227431
Matt Arsenault