The runtime support is provided directly by the Fuchsia system C
library.
Patch by Roland McGrath
Differential Revision: https://reviews.llvm.org/D30238
llvm-svn: 296082
The Fuchsia ABI defines slots from the thread pointer where the
stack-guard value for stack-protector, and the unsafe stack pointer
for safe-stack, are stored. This parallels the Android ABI support.
Patch by Roland McGrath
Differential Revision: https://reviews.llvm.org/D30237
llvm-svn: 296081
clang will generate IR like this for input using packed bitfields;
very simple semantically, but it's a bit tricky to actually
generate good code.
llvm-svn: 296080
The goal of this is to fix a bug in modules where we'd merge
FunctionDecls that differed in their pass_object_size attributes. Since
we can overload on the presence of pass_object_size attributes, this
behavior is incorrect.
We don't represent `N` in `pass_object_size(N)` as part of
ExtParameterInfo, since it's an error to overload solely on the value of
N. This means that we have a bug if we have two modules that declare
functions that differ only in their pass_object_size attrs, like so:
// In module A, from a.h
void foo(char *__attribute__((pass_object_size(0))));
// In module B, from b.h
void foo(char *__attribute__((pass_object_size(1))));
// In module C, in main.c
#include "a.h"
#include "b.h"
At the moment, we'll merge the foo decls, when we should instead emit a
diagnostic about an invalid overload. We seem to have similar (silent)
behavior if we overload only on the return type of `foo` instead; I'll
try to find a good place to put a FIXME (or I'll just file a bug) soon.
This patch also fixes a bug where we'd not output the proper extended
parameter info for declarations with pass_object_size attrs.
llvm-svn: 296076
Summary:
NetBSD 7.99.62 introduced Debug Registers interface similar to the FreeBSD one.
This interface will land NetBSD-8.0.
Introduce support for this interface in Register Context NetBSD x86_64 unconditionally as older versions of NetBSD will not be supported.
This change allows to reduce diff with other ports and remove local copy of the RegisterInfos_x86_64.h content.
NetBSD Register Context for 32-bit x86 support will be added later.
Sponsored by <The NetBSD Foundation>
Reviewers: labath, joerg, emaste, clayborg
Reviewed By: labath, clayborg
Subscribers: #lldb
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D30287
llvm-svn: 296071
Summary:
NetBSD 8.0 will ship with accept4(2) in libc wrapping paccept(2).
This change reduces needless difference with other platforms.
Older versions of NetBSD will not be supported.
No functional change.
Sponsored by <The NetBSD Foundation>
Reviewers: joerg, emaste, labath, clayborg
Reviewed By: emaste, labath, clayborg
Subscribers: #lldb
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D30288
llvm-svn: 296070
LoopUnswitch/simplify-with-nonvalness.ll is the test case for this.
The LIC has 2 users and deleting the 1st user when it can be simplified
invalidated the iterator for the 2nd user.
llvm-svn: 296069
compiler is run in a mode where the default C++ standard is newer than C++03.
The reason is because one of the warnings checked is only produced when the
compiler is using C++03 or lower.
This change fixes this problem as well as adds explicit run lines to run the
test in C++03 and C++11 modes.
llvm-svn: 296066
Fix the fact that we don't assign profile counters to constructors in
classes with virtual bases, or constructors with variadic parameters.
Differential Revision: https://reviews.llvm.org/D30131
llvm-svn: 296062
Splitting critical edges when one of the source edges is an indirectbr
is hard in general (because it requires changing the memory the indirectbr
reads). But if a block only has a single indirectbr predecessor (which is
the common case), we can simulate splitting that edge by splitting
the destination block, and retargeting the *direct* branches.
This is motivated by the use of computed gotos in python 2.7: PyEval_EvalFrame()
ends up using an indirect branch with ~100 successors, and passing a constant to
each of those. Since MachineSink can't break indirect critical edges on demand
(and doing this in MIR doesn't look feasible), this causes us to emit about ~100
defs of registers containing constants, which we in the predecessor block, where
only one of those constants is used in each successor. So, at each computed goto,
we needlessly spill about a 100 constants to stack. The end result is that a
clang-compiled python interpreter can be about ~2.5x slower on a simple python
reduction loop than a gcc-compiled interpreter.
Differential Revision: https://reviews.llvm.org/D29916
llvm-svn: 296060
This patch moves helper functions that are CPU-specific out of Driver.cpp and to
separate implementation files. The new files are named for the architecture,
e.g. ARMArch.cpp.
The next step after this will be to move OS-specific code, which I expect will
include many of the tool implementations, to similarly separate files.
Some CPU-specific functions are not being moved just yet. In cases where the
only caller is the platform-specific tools, I plan to move them together. An
example is Hexagon, where the only caller of the architecture-specific functions
are the tools themselves. (I'm happy to revise this choice, it just seems like
less churn to me.)
This does mean that some functions which were previously static are now exposed
through the library header Driver.h.
Reviewers: rsmith, javed.absar
Subscribers: aemerson, danalbert, srhines, dschuff, jyknight, nemanjai, mgorny, cfe-commits
Differential Revision: https://reviews.llvm.org/D30315
llvm-svn: 296056
This allows the ability to call IPDBSession::getGlobalScope with a NativeSession and
to then query it for some basic fields from the PDB's InfoStream.
Note that the symbols now have non-const references back to the Session so that
NativeRawSymbol can access the PDBFile through the Session.
Differential Revision: https://reviews.llvm.org/D30314
llvm-svn: 296049
routines for objects that are captured with the __unsafe_unretained
ownership qualifier
This is a preparation commit that improves code-coverage in code that emits
block copy/dispose routines.
llvm-svn: 296048
We were stopping the translation of the parent block when the
translation of an instruction failed, but we were still trying to
translate the other blocks of the parent function.
Don't do that.
llvm-svn: 296047
Summary: Creates bitcode files suitable for use with ThinLTO, then checks that the linker can build an executable from them.
Reviewers: ruiu, pcc
Reviewed By: pcc
Subscribers: mehdi_amini, Prazek, llvm-commits
Differential Revision: https://reviews.llvm.org/D30277
llvm-svn: 296042
Summary: In case we do not know what the condition is in an unswitched loop, but we know its definitely NOT a known constant. We can perform simplifcations based on this information.
Reviewers: sanjoy, hfinkel, chenli, efriedma
Reviewed By: efriedma
Subscribers: david2050, llvm-commits, mzolotukhin
Differential Revision: https://reviews.llvm.org/D28968
llvm-svn: 296041
routines for variables that are const-captured
This is a preparation commit that improves code-coverage in code that emits
block copy/dispose routines.
llvm-svn: 296040
This commit provides `zip_{first,shortest}` with the standard member types and
methods expected of iterators (e.g., `difference_type`), in order for zip to be
used with other adaptors, such as `make_filter_range`.
Support for reverse iteration has also been added.
Differential Revision: https://reviews.llvm.org/D30246
llvm-svn: 296036
Summary:
The helper will be used in a later change. This change itself is NFC
since the only user of this new function is its unit test.
Reviewers: majnemer, efriedma
Reviewed By: efriedma
Subscribers: efriedma, mcrosier, llvm-commits
Differential Revision: https://reviews.llvm.org/D30184
llvm-svn: 296035
Petr Hosek