This patch removes the huge blob of code that is dealing with
rtti/exceptions/sanitizers and replaces it with:
A ToolChain function which, for a given set of Args, figures out if rtti
should be:
- enabled
- disabled implicitly
- disabled explicitly
A change in the way SanitizerArgs figures out what sanitizers to enable
(or if it should error out, or warn);
And a check for exceptions/rtti interaction inside addExceptionArgs.
The RTTIMode algorithm is:
- If -mkernel, -fapple-kext, or -fno-rtti are passed, rtti was disabled explicitly;
- If -frtti was passed or we're not targetting the PS4, rtti is enabled;
- If -fexceptions or -fcxx-exceptions was passed and we're targetting
the PS4, rtti was enabled implicitly;
- If we're targetting the PS4, rtti is disabled implicitly;
- Otherwise, rtti is enabled;
Since the only flag needed to pass to -cc1 is -fno-rtti if we want to
disable it, there's no problem in saying rtti is enabled if we're
compiling C code, so we don't look at the input file type.
addExceptionArgs now looks at the RTTIMode and warns that rtti is being
enabled implicitly if targetting the PS4 and exceptions are on. It also
errors out if, targetting the PS4, -fno-rtti was passed, and exceptions
were turned on.
SanitizerArgs now errors out if rtti was disabled explicitly and the vptr
sanitizer was enabled implicitly, but just turns off vptr if rtti is
disabled but -fsanitize=undefined was passed.
Also fixed tests, removed duplicate name from addExceptionArgs comment,
and added one or two surrounding lines when running clang-format.
This changes test/Driver/fsanitize.c to make it not expect a warning when
passed -fsanitize=undefined -fno-rtti, but expect vptr to not be on.
Removed all users and definition of SanitizerArgs::sanitizesVptr().
Reviewers: samsonov
Subscribers: llvm-commits, samsonov, rsmith
Differential Revision: http://reviews.llvm.org/D7525
llvm-svn: 229801
This reapplies r224503 along with a fix for compiling Fortran by having the
clang driver invoke gcc (see r224546, where it was reverted). I have added
a testcase for that as well.
Original commit message:
It is often convenient to use -save-temps to collect the intermediate
results of a compilation, e.g., when triaging a bug report. Besides the
temporary files for preprocessed source and assembly code, this adds the
unoptimized bitcode files as well.
This adds a new BackendJobAction, which is mostly mechanical, to run after
the CompileJobAction. When not using -save-temps, the BackendJobAction is
combined into one job with the CompileJobAction, similar to the way the
integrated assembler is handled. I've implemented this entirely as a
driver change, so under the hood, it is just using -disable-llvm-optzns
to get the unoptimized bitcode.
Based in part on a patch by Steven Wu.
rdar://problem/18909437
llvm-svn: 224688
This reverts commit r224503.
It broke compilation of fortran through the Clang driver. Previously
`clang -c t.f` would invoke `gcc t.f` and `clang -cc1as`, but now it
tries to call `clang -cc1 t.f` which fails for obvious reasons.
llvm-svn: 224546
It is often convenient to use -save-temps to collect the intermediate
results of a compilation, e.g., when triaging a bug report. Besides the
temporary files for preprocessed source and assembly code, this adds the
unoptimized bitcode files as well.
This adds a new BackendJobAction, which is mostly mechanical, to run after
the CompileJobAction. When not using -save-temps, the BackendJobAction is
combined into one job with the CompileJobAction, similar to the way the
integrated assembler is handled. I've implemented this entirely as a
driver change, so under the hood, it is just using -disable-llvm-optzns
to get the unoptimized bitcode.
Based in part on a patch by Steven Wu.
rdar://problem/18909437
llvm-svn: 224503
Current versions of ld64 can't cope with "aarch64" being stored. I'm fixing
that, but in the transitionary period we'll need to still emit "arm64".
rdar://problem/17783765
llvm-svn: 213852
This commit implements the -fuse-ld= option, so that the user
can specify -fuse-ld=bfd to use ld.bfd.
This commit re-applies r194328 with some test case changes.
It seems that r194328 was breaking macosx or mingw build
because clang can't find ld.bfd or ld.gold in the given sysroot.
We should use -B to specify the executable search path instead.
Patch originally by David Chisnall.
llvm-svn: 211785
This introduces the definitions needed for the Windows on ARM target. Add
target definitions for both the MSVC environment and the MSVC + Itanium C++ ABI
environment. The Visual Studio definitions correspond to the definitions
provided by Visual Studio 2012.
llvm-svn: 205650
In gcc using -Ofast forces linking of crtfastmath.o.
In the current clang crtfastmath.o is only linked when -ffast-math/-funsafe-math-optimizations passed. It can lead to performance issues, when using only -Ofast without explicit -ffast-math (I faced with it).
My patch fixes inconsistency with gcc behaviour and also introduces few tests on it.
Patch by Zinovy Nis!
Differential Revision: http://llvm-reviews.chandlerc.com/D3114
llvm-svn: 204742
The integrated assembler is a feature. This makes the new flags the default
option, and the previous versions aliases. Ideally, at some point the aliases
would be entirely removed.
llvm-svn: 201963
Use the verify hook rather than the compile hook to represent the
-verify-pch action, and move the exising --verify-debug-info action
into its own subclass of VerifyJobAction. Incidentally change the name
printed by -ccc-print-phases for --verify-debug-info.
llvm-svn: 200938
Using -mmacosx-version-min (etc.) on non-Darwin platforms should be a warning,
not a hard error. There is no reason to add a special check for these options
in the default toolchain. This just removes the special check and then we get
the usual -Wunused-command-line-argument warning if someone tries to use one
of these options for a target where they are not supported.
<rdar://problem/15569346>
llvm-svn: 199431
Previously we had bodged together some hacks mapping MachO embedded
targets (i.e. mainly ARM v6M and v7M) to the "*-*-darwin-eabi" triple.
This is incorrect in both details (they don't run Darwin and they're
not EABI in any real sense).
This commit appropriates the existing "MachO" environment for the
purpose instead.
llvm-svn: 199367
getARMCPU and getLLVMArchSuffixForARM existed as very similar functions
in both ToolChain.cpp and Tools.cpp. Create a single implementation of
each in Tools.cpp, eliminate the duplicate and share via Tools.h.
Creates an 'arm' namespace in Tools.h to be used by any ARM-targetting tools.
llvm-svn: 197153
Passing -mthumb with no explicit CPU on the command line
resulted in target CPU changing from the architecture
default to arm7tdmi. Now it does not.
llvm-svn: 197151
- krait processor currently modeled with the same features as A9.
- Krait processor additionally has VFP4 (fused multiply add/sub)
and hardware division features enabled.
- krait has currently the same Schedule model as A9
- krait cpu flag is not recognized by the GNU assembler yet,
it is replaced with march=armv7-a to avoid a lower march
from being used.
llvm-svn: 196618
Teach the '-arch' command line option to enable the compiler-friendly
features of core-avx2 CPUs on Darwin. Pass the information along in the
target triple like Darwin+ARM does.
llvm-svn: 194907
The thread, memory, dataflow and function sanitizers are now diagnosed if
enabled explicitly on an unsupported platform. Unsupported sanitizers which
are enabled implicitly (as part of a larger group) are silently disabled. As a
side effect, this makes SanitizerArgs parsing toolchain-dependent (and thus
essentially reverts r188058), and moves SanitizerArgs ownership to ToolChain.
Differential Revision: http://llvm-reviews.chandlerc.com/D1990
llvm-svn: 193875
Adds some Cortex-A53 strings where they were missing before.
Cortex-A57 is entirely new to clang.
Doesn't touch code only used by Darwin, in consequence of which
one of the A53 lines has been removed.
Change-Id: I5edb58f6eae93947334787e26a8772c736de6483
llvm-svn: 193364
It makes no sense to try and compile for arm7tdmi when we're targeting
something like gnueabihf. Although not strictly the most basic hardware
conceivable, I believe arm1176jzf-s is a reasonable compromise (that can always
be overridden explicitly if needed) since it's still in reasonably common use
unlike earlier cores.
Patch by Stephen Kelly.
llvm-svn: 188796
Summary:
This change turns SanitizerArgs into high-level options
stored in the Driver, which are parsed lazily. This fixes an issue of multiple copies of the same diagnostic message produced by sanitizer arguments parser.
Reviewers: rsmith
Reviewed By: rsmith
CC: chandlerc, eugenis, cfe-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D1341
llvm-svn: 188660
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
The big changes are:
- Deleting Driver/(Arg|Opt)*
- Rewriting includes to llvm/Option/ and re-sorting
- 'using namespace llvm::opt' in clang::driver
- Fixing the autoconf build by adding option everywhere
As discussed in the review, this change includes using directives in
header files. I'll make follow up changes to remove those in favor of
name specifiers.
Reviewers: espindola
Differential Revision: http://llvm-reviews.chandlerc.com/D975
llvm-svn: 183989
When choosing a default CPU, clang used to pick ARM7TDMI (which has Thumb) even
when the more restrictive armv4 triple was specified. This should fix that.
Patch by Jeroen Hofstee.
llvm-svn: 183905
Sourcery CodeBench and modern FSF Mips toolchains require a bit more
complicated algorithm to calculate headers, libraries and sysroot paths
than implemented by Clang driver now. The main problem is that all these
paths depend on a set of command line arguments additionally to a target
triple value. For example, let $TC is a toolchain installation directory.
If we compile big-endian 32-bit mips code, crtbegin.o is in the
$TC/lib/gcc/mips-linux-gnu/4.7.2 folder and the toolchain's linker requires
--sysroot=$TC/mips-linux-gnu/libc argument. If we compile little-endian
32-bit soft-float mips code, crtbegin.o is in the
$TC/lib/gcc/mips-linux-gnu/4.7.2/soft-float/el folder and the toolchain's
linker requires --sysroot=$TC/mips-linux-gnu/libc/soft-float/el argument.
1. Calculate MultiarchSuffix using all necessary command line options and
use this MultiarchSuffix to detect crtbegin.o location in the
GCCInstallationDetector::ScanLibDirForGCCTriple() routine.
2. If a user does not provide --sysroot argument to the driver explicitly,
calculate new sysroot value based on command line options. Then use this
calculated sysroot path:
a. To populate a file search paths list in the Linux::Linux() constructor.
b. To find Mips toolchain specific include headers directories
in the Linux::AddClangSystemIncludeArgs() routine.
c. To provide -–sysroot argument for a linker.
Note:
- The FSF's tree slightly differs (folder names) and is not supported
yet.
- New addExternCSystemIncludeIfExits() routine is a temporary solution.
I plan to move path existence check to the addExternCSystemInclude()
routine by a separate commit.
The patch reviewed by Rafael Espindola.
http://llvm-reviews.chandlerc.com/D644
llvm-svn: 179934
Each toolchain has a set of tools, but they are all of known types. It can
have a linker, an assembler, a "clang" (compile, analyze, ...) a non-clang
compiler, etc.
Instead of keeping a map, just have member variable for each type of tool.
llvm-svn: 177479
The general pattern now is that Foobar::constructTool only creates tools
defined in the tools::foobar namespace and then delegates to the parent.
The remaining duplicated code is now in the tools themselves.
llvm-svn: 177368
svn 170909 added support for cortex-r5 but in this case it was done
incorrectly. The last argument to StringSwitch.Cases() is the replacement
value, so by adding "cortex-r5" it changed the default cpu for armv7r to
cortex-r5 instead of cortex-r4.
llvm-svn: 176456
Filipe Cabecinhas