Commit Graph

1876 Commits

Author SHA1 Message Date
Akira Hatanaka 7651dd8359 [ARM] Pass subtarget feature "+strict-align".
This commit changes the driver to save subtarget feature "+strict-align" to the
IR instead of using backend option "arm-strict-align". This is needed for LTO.

Also, move the logic in ARM backend that was deciding whether strict alignment
should be forced to the front-end.

rdar://problem/21529937

http://reviews.llvm.org/D11472

llvm-svn: 243489
2015-07-28 22:26:45 +00:00
Chih-Hung Hsieh 2c656c9417 Add -femulated-tls flag to select the emulated TLS model.
This will be used for old targets like Android that do not
support ELF TLS models.

Differential Revision: http://reviews.llvm.org/D10524

llvm-svn: 243441
2015-07-28 16:27:56 +00:00
Alexandros Lamprineas e5b47640ee Use TargetParser to parse -mhwdiv command line option in Driver.
Change-Id: I2ebc40f77af75ec6b43ce8364d6d5a1d29988bd6
Phabricator: http://reviews.llvm.org/D11501
llvm-svn: 243398
2015-07-28 09:08:03 +00:00
Renato Golin 7c542b4569 [ARM] Implement -Wa,-mfpu and friends for assemblers
This patch allows Clang to pass on -Wa,-mfpu, -Wa,-mhwdiv and
-Wa,-mcpu to the integrated assembler (via target-features), but
-march is still not being passed, but validated.

In case the command line has both -mxxx and -Wa,-mxxx, we warn
that the naked one will not be used in assembler mode.

llvm-svn: 243353
2015-07-27 23:44:45 +00:00
Renato Golin e17c580034 [ARM] Changes to Arch/CPU handling to help with -Wa,-mfpu etc. (nfc)
To be able to handle -Wa, options in the assembler (ClangAs), we need to
make the handling of options based on the value of the options, not direct
Arguments from the list, since the list is immutable.

No functional change in this patch, but this allows validating of -Wa,-mfpu
and friends in the same way we validate -mfpu and friends, *just* for the
assembler.

llvm-svn: 243352
2015-07-27 23:44:42 +00:00
Akira Hatanaka 9250047032 [AArch64] Unconditionally pass subtarget feature reserve-x18 on Darwin.
After r243308, the front-end is responsible for checking the target OS and
passing reserve-x18 if the target is Darwin.

llvm-svn: 243310
2015-07-27 19:29:04 +00:00
Douglas Katzman 5436607cf6 Rename {Hexagon,NaCl}_TC to {Hexagon,NaCl}ToolChain respectively. NFC
Also rename XCore (the toolchain) to XCoreToolChain since XCore is
also a namespace for its tools.

Differential Revision: http://reviews.llvm.org/D10609

llvm-svn: 243279
2015-07-27 16:53:08 +00:00
Renato Golin 24ba3e9852 Setting ARM dynamic linker name from commandline
Currently trigger to select hard-float linker is only based of -gnueabihf
appearing in target triplet, but we should also select it when hardfloat
is requested via cmdline.

Patch by Khem Raj.

llvm-svn: 243262
2015-07-27 09:56:37 +00:00
David Majnemer 015ce0f68f [clang-cl] Handle -O correctly
We had multiple bugs here:
- We didn't support multiple optimization options in one argument.
  e.g. -O2y-
- We didn't correctly expand -O[12dx] to their respective options.
- We treated -O1 as clang -O1 instead of clang -Os.
- We treated -Ox as clang -O3 instead of clang -O2.  In fact, cl's -Ox
  option is *less* powerful than cl's -O2 option despite -Ox described
  as "Full Optimization".

This fixes PR24003.

llvm-svn: 243261
2015-07-27 07:32:11 +00:00
David Majnemer bac941c4b1 [clang-cl] Add fallback support for /Zl
llvm-svn: 243207
2015-07-25 06:07:59 +00:00
Akira Hatanaka 4e3c86fe99 [AArch64] Pass subtarget feature "+reserve-x18" instead of passing backend
option "-aarch64-reserve-x18".

This change is needed since backend options do not make it to the backend
when doing LTO and are not capable of changing the behavior of code-gen
passes on a per-function basis.

rdar://problem/21529937

Differential Revision: http://reviews.llvm.org/D11462

llvm-svn: 243185
2015-07-25 00:18:00 +00:00
David Majnemer e2afb47d1e [clang-cl] Implement support for the /Zl flag
The flag allows users to specify that they do not want the object file
to have any implicit /defaultlib directives.

This fixes PR24236.

llvm-svn: 243097
2015-07-24 06:49:13 +00:00
Renato Golin 830f0c4c46 [Compiler-RT] Remove dependency on libgcc_s/eh
Currently, for --rtlib=compiler-rt on GNU systems, we're assuming
that one has libgcc_s and libgcc_eh as low-level libraries, which
when used in conjunction with -lunwind or -lc++abi, breaks that
assumption.

My original fix was wrong, and this patch reverts it to prepare for
a new flag to choose the unwinder/C++ libraries. For the time being,
people can use "-lgcc_s -lgcc_eh" or "-lunwind -lc++abi" or any
combination they need explicitly.

llvm-svn: 243025
2015-07-23 17:24:41 +00:00
Reid Kleckner 0213a4756e [mingw] Add support for -rtlib option and -stdlib option to the mingw driver
Now clang should be able to use compiler-rt and libc++ on mingw.

Based on a patch by Martell Malone.

Differential Revision: http://reviews.llvm.org/D11237

llvm-svn: 242905
2015-07-22 16:01:38 +00:00
Renato Golin a74bbc7b36 Pass -I options to integrates and external assemblers
Fixes PR21000.

Patch by Artem Belevich.

llvm-svn: 242904
2015-07-22 15:32:36 +00:00
Akira Hatanaka 0a23fac13c [ARM] Pass subtarget feature "+reserve-r9" instead of passing backend
option "-arm-reserve-r9".

This recommits r242736, which had to be reverted because the llvm-side
change that was committed in r242737 caused the number of subtarget
features to go over the limit of 64.

This change is needed since backend options do not make it to the backend
when doing LTO and are not capable of changing the behavior of code-gen
passes on a per-function basis.

rdar://problem/21529937

Differential Revision: http://reviews.llvm.org/D11319

llvm-svn: 242755
2015-07-21 01:41:08 +00:00
Akira Hatanaka 6a543b6754 Revert r242736.
r242737 caused builds to fail with the following error message, so I'm
reverting the clang side change too:

error:Too many subtarget features! Bump MAX_SUBTARGET_FEATURES.

llvm-svn: 242741
2015-07-20 23:53:02 +00:00
Akira Hatanaka 6b7fff9ce5 [ARM] Pass subtarget feature "+reserve-r9" instead of passing backend
option "-arm-reserve-r9".
        
This change is needed since backend options do not make it to the backend
when doing LTO and are not capable of changing the behavior of code-gen
passes on a per-function basis.

rdar://problem/21529937

Differential Revision: http://reviews.llvm.org/D11319

llvm-svn: 242736
2015-07-20 23:20:53 +00:00
Artem Belevich 5bde4e051e Fixed style issues pointed out by Justin Bogner.
Differential Revision: http://reviews.llvm.org/D11273

llvm-svn: 242698
2015-07-20 20:02:54 +00:00
Gabor Ballabas a24a1a411d Allow case-insensitive values for -mtune for AArch64 target in line with GCC.
GCC allows case-insensitive values for -mcpu, -march and -mtune options.
This patch implements the same behaviour for the -mtune option for the AArch64 target.

Differential Revision: http://reviews.llvm.org/D10563

llvm-svn: 242663
2015-07-20 11:28:20 +00:00
Tom Stellard 1de69e8a4b Driver/ToolChain/AMDGPU: Attempt to fix buildbots after r242601
llvm-svn: 242602
2015-07-18 02:11:07 +00:00
Tom Stellard 8fa3309796 Driver: Add AMDGPU toolchain
Summary:
This is a minimal toolchain, which sets the integrated assembler as default,
and uses lld for linking.

Reviewers: arsenm, mcrosier

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D10700

llvm-svn: 242601
2015-07-18 01:49:05 +00:00
Steven Wu 546a19628b Fix -save-temp when using objc-arc, sanitizer and profiling
Currently, -save-temp will cause ObjCARC optimization to be dropped,
sanitizer pass to run early in the pipeline, and profiling
instrumentation to run twice.
Fix the issue by properly disable all passes in the optimization
pipeline when generating bitcode output and parse some of the Language
Options even when the input is bitcode so the passes can be setup
correctly.

llvm-svn: 242565
2015-07-17 20:09:56 +00:00
Petar Jovanovic 9fe32cde5c [Mips] Set mips64r6 as default CPU for MIPS64 Android
Change default CPU for MIPS64 Android. Now it is mips64r6.

Differential Revision: http://reviews.llvm.org/D11294

llvm-svn: 242522
2015-07-17 12:57:30 +00:00
Justin Bogner d3371d8703 Driver: Determine file names for crash reports more reliably
Guessing which file name to replace based on the -main-file-name
argument to -cc1 is flawed. Instead, keep track of which arguments are
inputs to each command.

llvm-svn: 242504
2015-07-17 03:35:54 +00:00
Akira Hatanaka 580efb2475 [ARM] Pass subtarget feature "+no-movt" instead of passing backend option
"-arm-use-movt=0".
        
This change is needed since backend options do not make it to the backend
when doing LTO and are not capable of changing the behavior of code-gen
passes on a per-function basis.

rdar://problem/21529937

Differential Revision: http://reviews.llvm.org/D11025

llvm-svn: 242368
2015-07-16 00:43:00 +00:00
Reid Kleckner 5c6efed3f5 [clang-cl] Disable C++ exceptions a different way
Rather than making -fexceptions a core option that enables C++ EH in
clang-cl, users can use the '-Xclang -fexceptions -Xclang
-fcxx-exceptions' flag set. We weren't going to expose -fexceptions in
clang-cl in the long run, so this way we don't add and then remove a
flag.

llvm-svn: 242176
2015-07-14 18:16:48 +00:00
Yaron Keren 2ffb36e829 Add support for -fuse-ld= in the mingw toolchain driver.
We will still default to ld until such a time lld become a 
stable release. lld supports arm NT under the machine name "thumb2pe".

http://reviews.llvm.org/D11088

Patch by Martell Malone
Reviewed by Reid Kleckner

llvm-svn: 242121
2015-07-14 05:23:34 +00:00
Artem Belevich 0ff05cd165 [cuda] Driver changes to compile and stitch together host and device-side CUDA code.
NOTE: reverts r242077 to reinstate r242058, r242065, 242067
        and includes fix for OS X test failures.

  - Changed driver pipeline to compile host and device side of CUDA
    files and incorporate results of device-side compilation into host
    object file.

  - Added a test for cuda pipeline creation in clang driver.

  New clang options:
  --cuda-host-only   - Do host-side compilation only.
  --cuda-device-only - Do device-side compilation only.

  --cuda-gpu-arch=<ARCH> - specify GPU architecture for device-side
    compilation. E.g. sm_35, sm_30. Default is sm_20. May be used more
    than once in which case one device-compilation will be done per
    unique specified GPU architecture.

  Differential Revision: http://reviews.llvm.org/D9509

llvm-svn: 242085
2015-07-13 23:27:56 +00:00
Samuel Antao f8b5012dfb [OpenMP] Add TLS-based implementation for threadprivate directive.
llvm-svn: 242080
2015-07-13 22:54:53 +00:00
Rafael Espindola abbd6d6824 This reverts commit r242058, r242065, r242067.
The tests were failing on OS X.

Revert "[cuda] Driver changes to compile and stitch together host and device-side CUDA code."
Revert "Fixed regex to properly match '64' in the test case."
Revert "clang/test/Driver/cuda-options.cu REQUIRES clang-driver, at least."

llvm-svn: 242077
2015-07-13 22:26:30 +00:00
Artem Belevich cd42e7f77a [cuda] Driver changes to compile and stitch together host and device-side CUDA code.
- Changed driver pipeline to compile host and device side of CUDA
    files and incorporate results of device-side compilation into host
    object file.

  - Added a test for cuda pipeline creation in clang driver.

  New clang options:
  --cuda-host-only   - Do host-side compilation only.
  --cuda-device-only - Do device-side compilation only.

  --cuda-gpu-arch=<ARCH> - specify GPU architecture for device-side
    compilation. E.g. sm_35, sm_30. Default is sm_20. May be used more
    than once in which case one device-compilation will be done per
    unique specified GPU architecture.

  Differential Revision: http://reviews.llvm.org/D9509

llvm-svn: 242058
2015-07-13 20:21:06 +00:00
Reid Kleckner 0bb1fc410b Disable C++ EH by default for clang-cl and MSVC environments
We don't need any more bug reports from users telling us that MSVC-style
C++ exceptions are broken. Developers and adventurous users can still
test the existing functionality by passing along -fexceptions to either
clang or clang-cl.

llvm-svn: 241952
2015-07-10 22:25:44 +00:00
Eric Christopher 71e5e3defe Refactor PPC ABI handling to accept and silently ignore -mabi=altivec.
All of the ABIs we support are altivec style anyhow and so the option
doesn't make much sense with the modern ABIs. We could make this a more
noisy ignore, but it would break builds for projects that just pass
it along by default because of historical reasons.

llvm-svn: 241925
2015-07-10 18:25:54 +00:00
Diego Novillo a05459691f Factor PGO and coverage flag processing out of Clang::ConstructJob
The function is massively large and GCC is emitting stack overflow
errors when building it (stack, as counted by the compiler, grows to
more than 16Kb).

The new flag processing logic added in r241825 took it over the limit.

llvm-svn: 241918
2015-07-10 18:00:07 +00:00
Daniel Jasper 7450f91716 Re-use a single SmallString instance to reduce the stack frame size
In certain builds (msan), this can otherwise exceed the stack frame
limit set for certain environments.

llvm-svn: 241894
2015-07-10 08:25:54 +00:00
Diego Novillo 578caf5da7 Add GCC-compatible flags -fprofile-generate and -fprofile-use.
This patch adds support for specifying where the profile is emitted in a
way similar to GCC. These flags are used to specify directories instead
of filenames. When -fprofile-generate=DIR is used, the compiler will
generate code to write to <DIR>/default.profraw.

The patch also adds a couple of extensions: LLVM_PROFILE_FILE can still be
used to override the directory and file name to use and -fprofile-use
accepts both directories and filenames.

To simplify the set of flags used in the backend, all the flags get
canonicalized to -fprofile-instr-{generate,use} when passed to the
backend. The decision to use a default name for the profile is done
in the driver.

llvm-svn: 241825
2015-07-09 17:23:53 +00:00
Petar Jovanovic 26a4a40137 [MIPS] Add support for direct-to-nacl in Clang
For Mips direct-to-nacl, the goal is to be close to le32 front-end and
use Mips32EL backend. This patch defines new NaClMips32ELTargetInfo and
modifies it slightly to be close to le32. It also adds necessary parts,
inline with ARM and X86.

Differential Revision: http://reviews.llvm.org/D10739

llvm-svn: 241678
2015-07-08 13:07:31 +00:00
Akira Hatanaka c269482af3 Add a comment to explain how the decision to pass feature "+long-calls" is made.
llvm-svn: 241568
2015-07-07 08:28:42 +00:00
Akira Hatanaka 3fb33a5d18 [ARM] Pass subtarget feature "+long-calls" instead of passing backend option
"-arm-long-calls".

This change allows using -mlong-calls/-mno-long-calls for LTO and enabling or
disabling long call on a per-function basis.

rdar://problem/21529937

Differential Revision: http://reviews.llvm.org/D9414

llvm-svn: 241565
2015-07-07 06:42:05 +00:00
Yaron Keren adce68ee88 Support -pthread in mingw toolchain.
"-pthread" appends -lpthread after the object files list passed to the linker.

llvm-svn: 241485
2015-07-06 18:52:19 +00:00
Teresa Johnson 8749d80431 Resubmit "Pass down the -flto option to the -cc1 job" (r239481)
The patch is the same except for the addition of a new test for the
issue that required reverting the dependent llvm commit.

--Original Commit Message--

Pass down the -flto option to the -cc1 job, and from there into the
CodeGenOptions and onto the PassManagerBuilder. This enables gating
the new EliminateAvailableExternally module pass on whether we are
preparing for LTO.

If we are preparing for LTO (e.g. a -flto -c compile), the new pass is not
included as we want to preserve available externally functions for possible
link time inlining.

llvm-svn: 241467
2015-07-06 16:23:00 +00:00
Yaron Keren 1c0070c65d Support mingw-w64 and mingw.org toolchains at any install location.
No more hardcoded paths: clang will use -sysroot as gcc root location if
provided. Otherwise, it will search for gcc on the path. If not found it
will use the driver installed location.

 http://reviews.llvm.org/D5268

Patch by Ruben Van Boxem, Martell Malone, Yaron Keren.
Reviewed by Reid Kleckner.

llvm-svn: 241241
2015-07-02 04:45:27 +00:00
Peter Collingbourne 2659fb370e Make getArchNameForCompilerRTLib return the right thing on 32-bit Windows. Fixes the tests there.
llvm-svn: 241228
2015-07-02 02:07:43 +00:00
Peter Collingbourne 581f438f4c Driver: add support for linking the UBSan runtime library on Windows.
On Windows the user may invoke the linker directly, so we might not have an
opportunity to add runtime library flags to the linker command line. Instead,
instruct the code generator to embed linker directive in the object file
that cause the required runtime libraries to be linked.

We might also want to do something similar for ASan, but it seems to have
its own special complexities which may make this infeasible.

Differential Revision: http://reviews.llvm.org/D10862

llvm-svn: 241225
2015-07-02 01:48:12 +00:00
Reid Kleckner 3123eff5eb [clang-cl] Use /arch: to set the base target CPU
The main effect of this change is that /arch:IA32 will use i386 as the
CPU, while clang-cl will continue to default to pentium4 (aka SSE2 plus
the usual other features).

/arch:AVX and /arch:AVX2 will also now enable the other features
available in sandybridge and haswell respectively, which is consistent
with MSDN.

llvm-svn: 241077
2015-06-30 16:32:04 +00:00
Douglas Katzman 2675d01de7 More range-based for loops. NFC
llvm-svn: 240984
2015-06-29 19:12:56 +00:00
Douglas Katzman 750cfc5711 Comment fixes. NFC.
- Hexagon options were physically next to to ones that had a
  preceding comment saying "Double dash options", which they aren't.

- The 'ld' tool classes are named Linker, not Link.

llvm-svn: 240980
2015-06-29 18:42:16 +00:00
Douglas Katzman a67e50c301 clang-format some of the files in lib/Driver. NFC
Nothing was hand edited afterward except a few literal strings
and comments that were poorly broken.

Differential Revision: http://reviews.llvm.org/D10689

llvm-svn: 240791
2015-06-26 15:47:46 +00:00
Douglas Katzman 6bbffc4b97 Use more range-based for loops
Differential Revision: http://reviews.llvm.org/D10738

llvm-svn: 240674
2015-06-25 18:51:37 +00:00
Douglas Katzman 9535429270 Pedantically rename all Tool subclasses to be nouns, not verbs. NFC
Classes in Tools.h inherit ultimately from Tool, which is a noun,
but subclasses of Tool were named for their operation, such as "Compile",
wherein the constructor call "Compile(args...)" could be misconstrued
as actually causing a compile to happen.

Likewise various other methods were not harmonious with their effect,
in that "BuildLinker()" returned a "new namespace::Link(...)"
instead of a "new namespace::Linker(...)" which it now does.

Exceptions: Clang and ClangAs are un-renamed. Those are their rightful names.
And there is no particulary great way to name the "Lipo-er" and a few others.

Differential Revision: http://reviews.llvm.org/D10595

llvm-svn: 240455
2015-06-23 20:42:09 +00:00
Jim Grosbach c78c2bcb2a Driver: Pass -I options to cc1as for .include search paths.
llvm-svn: 240432
2015-06-23 18:20:13 +00:00
Alexander Kornienko ab9db51042 Revert r240270 ("Fixed/added namespace ending comments using clang-tidy").
llvm-svn: 240353
2015-06-22 23:07:51 +00:00
Alexander Kornienko 3d9d929e42 Fixed/added namespace ending comments using clang-tidy. NFC
The patch is generated using this command:

  $ tools/extra/clang-tidy/tool/run-clang-tidy.py -fix \
      -checks=-*,llvm-namespace-comment -header-filter='llvm/.*|clang/.*' \
      work/llvm/tools/clang

To reduce churn, not touching namespaces spanning less than 10 lines.

llvm-svn: 240270
2015-06-22 09:47:44 +00:00
Alexey Samsonov 907880edd9 [CFI] Require -flto instead of implying it.
Summary:
This is unfortunate, but would let us land http://reviews.llvm.org/D10467,
that makes ToolChains responsible for computing the set of sanitizers
they support.

Unfortunately, Darwin ToolChains doesn't know about actual OS they
target until ToolChain::TranslateArgs() is called. In particular, it
means we won't be able to construct SanitizerArgs for these ToolChains
before that.

This change removes SanitizerArgs::needsLTO() method, so that now
ToolChain::IsUsingLTO(), which is called very early, doesn't need
SanitizerArgs to implement this method.

Docs and test cases are updated accordingly. See
https://llvm.org/bugs/show_bug.cgi?id=23539, which describes why we
start all these.

Test Plan: regression test suite

Reviewers: pcc

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D10560

llvm-svn: 240170
2015-06-19 19:57:46 +00:00
Douglas Katzman 84a7564b28 Add nominal support for 'shave' target.
This change passes through C and assembler jobs to Movidius tools by
constructing commands which are the same as ones produces by the examples
in the SDK. But rather than reference MV_TOOLS_DIR to find tools,
we will assume that binaries are installed wherever the Driver would
find its native tools. Similarly, this change assumes that -I options
will "just work" based on where SDK headers get installed, rather than
baking into the Driver some magic paths.

Differential Revision: http://reviews.llvm.org/D10440

llvm-svn: 240134
2015-06-19 14:55:19 +00:00
Gabor Ballabas 3645149ea2 Allow case-insensitive values for -march for AArch64 target in line with GCC.
GCC allows case-insensitive values for -mcpu, -march and -mtune options.
This patch implements the same behaviour for the -march option for the AArch64 target.

llvm-svn: 240019
2015-06-18 14:23:12 +00:00
Toma Tabacu 94ea6867cc [mips] Don't propagate -mfpxx by default if soft/single float were also set.
Summary:
If the driver is only given -msoft-float/-mfloat-abi=soft or -msingle-float,
we should refrain from propagating -mfpxx, unless it was explicitly given on the
command line.

Reviewers: atanasyan, dsanders

Reviewed By: atanasyan, dsanders

Subscribers: cfe-commits, mpf

Differential Revision: http://reviews.llvm.org/D10387

llvm-svn: 239818
2015-06-16 13:54:13 +00:00
Richard Smith cf18b79ccf [modules] Rename -fmodule-maps to -fimplicit-module-maps (and likewise for
-fno-module-maps). The old names are preserved for compatibility.

llvm-svn: 239792
2015-06-16 00:20:23 +00:00
Richard Smith 47972afd10 [modules] Simplify -cc1 interface for enabling implicit module maps.
We used to have a flag to enable module maps, and two more flags to enable
implicit module maps. This is all redundant; we don't need any flag for
enabling module maps in the abstract, and we don't usually have -fno- flags for
-cc1. We now have just a single flag, -fimplicit-module-maps, that enables
implicitly searching the file system for module map files and loading them.

The driver interface is unchanged for now. We should probably rename
-fmodule-maps to -fimplicit-module-maps at some point.

llvm-svn: 239789
2015-06-16 00:08:24 +00:00
Peter Collingbourne c4122c17b4 Protection against stack-based memory corruption errors using SafeStack: Clang command line option and function attribute
This patch adds the -fsanitize=safe-stack command line argument for clang,
which enables the Safe Stack protection (see http://reviews.llvm.org/D6094
for the detailed description of the Safe Stack).

This patch is our implementation of the safe stack on top of Clang. The
patches make the following changes:

- Add -fsanitize=safe-stack and -fno-sanitize=safe-stack options to clang
  to control safe stack usage (the safe stack is disabled by default).

- Add __attribute__((no_sanitize("safe-stack"))) attribute to clang that can be
  used to disable the safe stack for individual functions even when enabled
  globally.

Original patch by Volodymyr Kuznetsov and others at the Dependable Systems
Lab at EPFL; updates and upstreaming by myself.

Differential Revision: http://reviews.llvm.org/D6095

llvm-svn: 239762
2015-06-15 21:08:13 +00:00
James Y Knight b240652746 [Sparc] Make soft-float emit an error.
LLVM does not and has not ever supported a soft-float ABI mode on
Sparc, so don't pretend that it does.

Also switch the default from "soft-float" -- which was actually
hard-float because soft-float is unimplemented -- to hard-float.

Differential Revision: http://reviews.llvm.org/D10457

llvm-svn: 239755
2015-06-15 20:51:24 +00:00
Gabor Ballabas 726ce7fc57 Allow case-insensitive values for -mcpu for AArch64 target in line with GCC.
GCC allows case-insensitive values for -mcpu, -march and -mtune options.
This patch implements the same behaviour for the -mcpu option for the AArch64 target.

llvm-svn: 239619
2015-06-12 17:33:37 +00:00
Teresa Johnson edca6e507e Revert commit r239481 as it is dependent on reverted llvm commit r239480.
llvm-svn: 239588
2015-06-12 03:11:50 +00:00
Sanjay Patel 2987c29a1e add the -mrecip driver flag and process its options (3rd try)
The 1st and 2nd tries to land this (r238055, r238851) were reverted due to
bot failures caused by the LLVM part of the patch. That was hopefully fixed 
after r239001.

This is the front-end counterpart to D8982.

The -mrecip option interface is based on maintaining compatibility with gcc:
https://gcc.gnu.org/onlinedocs/gcc-4.9.2/gcc/i386-and-x86-64-Options.html#index-mrecip_003dopt-1627
https://gcc.gnu.org/onlinedocs/gcc-4.9.2/gcc/RS_002f6000-and-PowerPC-Options.html#index-mrecip-2289

...while adding more functionality (allowing users to specify the number of refinement steps for each
estimate type).

Differential Revision: http://reviews.llvm.org/D8989

llvm-svn: 239536
2015-06-11 14:53:41 +00:00
Gabor Ballabas cebcb3b52f Allow case-insensitive values for -march for ARM in line with GCC.
GCC allows case-insensitive values for -mcpu, -march and -mtune options.
This patch implements the same behaviour for the -march option for ARM.

llvm-svn: 239527
2015-06-11 12:29:56 +00:00
Toma Tabacu b36d610cc2 [mips] Pass on -m{single,double}-float to GAS.
Summary: We already pass these to the IAS, but not to GAS.

Reviewers: dsanders, atanasyan

Reviewed By: atanasyan

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D10358

llvm-svn: 239525
2015-06-11 12:13:18 +00:00
Teresa Johnson 88c3c67997 Pass down the -flto option to the -cc1 job, and from there into the
CodeGenOptions and onto the PassManagerBuilder. This enables gating
the new EliminateAvailableExternally module pass on whether we are
preparing for LTO.

If we are preparing for LTO (e.g. a -flto -c compile), the new pass is not
included as we want to preserve available externally functions for possible
link time inlining.

llvm-svn: 239481
2015-06-10 17:49:45 +00:00
Sean Silva 14facf307c range-for'ify Args->filtered_begin(...) loops
We already have Args->filtered(...) which is a drop-in range-for
replacement.

llvm-svn: 239381
2015-06-09 01:57:17 +00:00
David Majnemer e11d373512 [Driver] Inject the MSVC compatibility version into the triple
Encoding the version into the triple will allow us to communicate to
LLVM what functions it can expect to depend upon in the implementation.

llvm-svn: 239273
2015-06-08 00:22:46 +00:00
John Brawn 5a589ad603 [ARM] Use TargetParser to determine FPU subtarget features
The main effect of this is to fix anomalies where certain -mfpu options didn't
disable everything that they should causing strange behaviour when combined
with -mcpu or -march values that themselves enabled fpu subtarget features,
e.g. -mfpu=fpv5-dp-d16 with -march=armv7em previously behaved the same as
-mfpu=fpv5-sp-d16 due to fp-only-sp not being disabled.

Invalid -mfpu options now also give an error, which is consistent with the
handling of the .fpu directive.

Differential Revision: http://reviews.llvm.org/D10239

llvm-svn: 239152
2015-06-05 13:34:11 +00:00
Artyom Skrobov 902ac2d837 Simplify ARMTargetParser::parseArch(ARMTargetParser::getCanonical()), following r239099
Reviewers: rengolin

Reviewed By: rengolin

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D10256

llvm-svn: 239101
2015-06-04 21:31:41 +00:00
Gabor Ballabas 208826cc0f Allow case-insensitive values for -mcpu for ARM
GCC allows case-insensitive values for -mcpu, -march and -mtune options.
This patch implements the same behaviour for the -mcpu option.

llvm-svn: 239059
2015-06-04 17:56:32 +00:00
Brad Smith b58159ab1f Use the appropriate PIE level for OpenBSD/sparc.
llvm-svn: 239028
2015-06-04 08:45:23 +00:00
Douglas Katzman fe77e0dcfc Save getArch() in a local var instead of calling it 20 times, etc.
Differential Revision: http://reviews.llvm.org/D10224

llvm-svn: 238992
2015-06-04 00:15:00 +00:00
Rafael Espindola dc9293d051 Revert "add the -mrecip driver flag and process its options (2nd try)"
This reverts commit r238851.

It depends on a llvm commit that was reverted.

llvm-svn: 238904
2015-06-03 05:44:28 +00:00
Sanjay Patel d79da01631 add the -mrecip driver flag and process its options (2nd try)
The first try to land this (r238055) was reverted due to bot failures
caused by the LLVM part of the patch. That was hopefully fixed by r238788,
and the LLVM patch was resubmitted at r238842.

This is the front-end counterpart to D8982.

The -mrecip option interface is based on maintaining compatibility with gcc:
https://gcc.gnu.org/onlinedocs/gcc-4.9.2/gcc/i386-and-x86-64-Options.html#index-mrecip_003dopt-1627
https://gcc.gnu.org/onlinedocs/gcc-4.9.2/gcc/RS_002f6000-and-PowerPC-Options.html#index-mrecip-2289

...while adding more functionality (allowing users to specify the number of refinement steps for each
estimate type).

Differential Revision: http://reviews.llvm.org/D8989

llvm-svn: 238851
2015-06-02 16:55:12 +00:00
Benjamin Kramer 3204b152b5 Replace push_back(Constructor(foo)) with emplace_back(foo) for non-trivial types
If the type isn't trivially moveable emplace can skip a potentially
expensive move. It also saves a couple of characters.


Call sites were found with the ASTMatcher + some semi-automated cleanup.

memberCallExpr(
    argumentCountIs(1), callee(methodDecl(hasName("push_back"))),
    on(hasType(recordDecl(has(namedDecl(hasName("emplace_back")))))),
    hasArgument(0, bindTemporaryExpr(
                       hasType(recordDecl(hasNonTrivialDestructor())),
                       has(constructExpr()))),
    unless(isInTemplateInstantiation()))

No functional change intended.

llvm-svn: 238601
2015-05-29 19:42:19 +00:00
John Brawn a8f8234f91 [ARM] Adjust -march checking
getCanonicalArchName can return an empty string for an architecture
that is well-formed but meaningless. Use parseArch to determine if
it's actually valid or not.

Differential Revision: http://reviews.llvm.org/D10120

llvm-svn: 238553
2015-05-29 13:10:44 +00:00
Chandler Carruth c6625c63e7 [omp] Fix a typo in a comment and a line I forgot to clang-format that
Justin pointed out in post-commit review.

llvm-svn: 238498
2015-05-28 21:10:31 +00:00
Renato Golin 3c007259a4 [ARMTargetParser] FIXME on getLLVMArchSuffixForARM. NFC
llvm-svn: 238430
2015-05-28 15:05:53 +00:00
Chandler Carruth 9c6b4f8528 [omp] Re-work Clang's handling of -fopenmp and undo r237769.
This isn't an actual revert of r237769, it just restores the behavior of
the Clang driver prior to it while completely re-implementing how that
behavior works.

This also re-does the work of making the default OpenMP runtime
selectable at CMake (or configure) time to work in the way all of our
other such hooks do (config.h, configure and cmake hooks, etc.).

I've re-implemented how we manage the '-fopenmp' flagset in an important
way. Now, the "default" hook just makes '-fopenmp' equivalent to
'-fopenmp=<default>' rather than a separate special beast. Also, there
is an '-fno-openmp' flag which does the obvious thing. Also, the code is
shared between all the places to select a known OpenMP runtime and act
on it.

Finally, and most significantly, I've taught the driver to inspect the
selected runtime when choosing whether to propagate the '-fopenmp' flag
to the frontend in the CC1 commandline. Without this, it isn't possible
to use Clang with libgomp, even if you were happy with the serial,
boring way in which it worked previously (ignoring all #pragmas but
linking in the library to satisfy direct calls into the runtime).

While I'm here, I've gone ahead and sketched out a path for the future
name of LLVM's OpenMP runtime (libomp) and the legacy support for its
current name (libiomp5) in what seems a more reasonable way.

To re-enable LLVM's OpenMP runtime (which I think should wait until the
normal getting started instructions are a reasonable way for falks to
check out, build, and install Clang with the runtime) all that needs to
change is the default string in the CMakeLists.txt and configure.ac
file. No code changes necessary.

I also added a test for the driver's behavior around OpenMP since it was
*completely missing* previously. Makes it unsurprising that we got it
wrong.

llvm-svn: 238389
2015-05-28 01:52:38 +00:00
David Majnemer dcecd93196 [Driver] Unbreak hexagon build bots
AddHexagonTargetArgs didn't respect the driver flags by unconditionally
pushing -fno-signed-char.  Instead, add Hexagon handling to
isSignedCharDefault.

llvm-svn: 238106
2015-05-23 19:23:55 +00:00
David Majnemer c3658d2f24 [Driver] Handle -fno-signed-char and -fno-unsigned-char
GCC maps -fno-unsigned-char to -fsigned-char and -fno-signed-char to
-funsigned-char.

llvm-svn: 238105
2015-05-23 18:48:37 +00:00
Rafael Espindola 992c6fa5db This reverts commit r238064 and r238055.
They depend on a reverted llvm commit.

llvm-svn: 238076
2015-05-23 00:30:33 +00:00
Sanjay Patel f5019e60c7 add the -mrecip driver flag and process its options
This is the front-end counterpart to D8982 (LLVM r238051).

The -mrecip option interface is based on maintaining compatibility with gcc:
https://gcc.gnu.org/onlinedocs/gcc-4.9.2/gcc/i386-and-x86-64-Options.html#index-mrecip_003dopt-1627
https://gcc.gnu.org/onlinedocs/gcc-4.9.2/gcc/RS_002f6000-and-PowerPC-Options.html#index-mrecip-2289

...while adding more functionality (allowing users to specify the number of refinement steps for each
estimate type).

Differential Revision: http://reviews.llvm.org/D8989

llvm-svn: 238055
2015-05-22 21:42:10 +00:00
Rafael Espindola b8a1293e0b Make unique section names the default again.
Using non unique names found a bug in the ICF inplementation in gold:

https://sourceware.org/bugzilla/show_bug.cgi?id=18440

This reverts commit r234143.

llvm-svn: 238048
2015-05-22 20:44:03 +00:00
Renato Golin f6c154d532 Use profile and version parsers from ARMTargetParser
Now that ARMTargetParser can parse profile and version numbers,
use them instead of the local implementation.

llvm-svn: 238037
2015-05-22 18:18:25 +00:00
John Brawn 94fd963315 [ARM] Restructure cpu handling in the driver to mostly use the triple
Using the target cpu to determine some behaviour is sprinkled in
several places in the driver, but in almost all the information that
is needed can be found in the triple. Restructure things so that the
triple is used, and the cpu is only used if the exact cpu name is
needed.

Also add a check that the -mcpu argument is valid, and correct the
-march argument checking so that it handles -march=native correctly. I
would have liked to move these checks into the computation of the
triple, but the triple is calculated several times in several places
and that would lead to multiple error messages for the same thing.

Differential Revision: http://reviews.llvm.org/D9879

llvm-svn: 237894
2015-05-21 12:19:49 +00:00
Richard Smith 31d1de2229 [OpenMP] Make default OpenMP library (the one selected with just -fopenmp)
configurable in the CMake build. There shouldn't be any change in default
behavior.

Derived from a patch by Daniel Jasper!

llvm-svn: 237850
2015-05-20 22:48:44 +00:00
Alexey Bataev db39021cee [OPENMP] -fopenmp enables OpenMP support (fix for http://llvm.org/PR23492)
-fopenmp turns on OpenMP support and links libiomp5 as OpenMP library. Also there is -fopenmp={libiomp5|libgomp} option that allows to override effect of -fopenmp and link libgomp library (if -fopenmp=libgomp is specified).
Differential Revision: http://reviews.llvm.org/D9736

llvm-svn: 237769
2015-05-20 04:24:19 +00:00
David Majnemer 8db9176d68 [clang-cl] Enable C++14 when targeting 2015 compatibility
llvm-svn: 237553
2015-05-18 04:49:30 +00:00
Ikhlas Ajbar 03404c14fe Remove unused function HasPICArg().
llvm-svn: 237374
2015-05-14 17:42:20 +00:00
Ikhlas Ajbar 522e6196f7 Factor out SmallDataThreshold
This patch factors out SmallDataThreshold code.

llvm-svn: 237364
2015-05-14 13:52:08 +00:00
Vladimir Sukharev c6dab75bd4 [ARM] Add v8.1a architecture
Add support for ARMv8.1a architecture. 

Briefly it is described on http://community.arm.com/groups/processors/blog/2014/12/02/the-armv8-a-architecture-and-its-ongoing-development

Reviewers: 	jmolloy, rengolin

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D8799

llvm-svn: 237349
2015-05-14 08:25:18 +00:00
Renato Golin cb3b0c6eeb Change TargetParser enum names to avoid macro conflicts (clang)
sys/time.h on Solaris (and possibly other systems) defines "SEC" as "1"
using a cpp macro.  The result is that this fails to compile.

Fixes https://llvm.org/PR23482

llvm-svn: 237113
2015-05-12 10:34:10 +00:00
Justin Bogner c7701240ed Re-apply "Driver: Make profiling flags work with -nostdlib on Darwin"
This time without a stray "true" in an argument list.

This reverts r237077, restoring r237074.

llvm-svn: 237091
2015-05-12 05:44:36 +00:00
Justin Bogner 7b6c0e02ac Revert "Driver: Make profiling flags work with -nostdlib on Darwin"
This revert r237074. These tests are failing all over the place.

llvm-svn: 237077
2015-05-12 01:04:33 +00:00
Justin Bogner f44ddae71e Driver: Make profiling flags work with -nostdlib on Darwin
Compiler-rt's Profiling library isn't part of the stdlib, so -nostdlib
shouldn't prevent it from being linked. This makes Darwin behave like
other toolchains, and link in the profile runtime irrespective of
-nostdlib, since the resulting program can't be run unless you link
this.

I've also added a test to show that other toolchains already behave
like this.

llvm-svn: 237074
2015-05-12 00:31:33 +00:00
Douglas Katzman f36dddf426 [Sparc] Add support for 'sparcel' to clang.
Differential Revision: http://reviews.llvm.org/D8784

llvm-svn: 237001
2015-05-11 15:21:44 +00:00
Ikhlas Ajbar 71d19f3cd6 Factor out Hexagon code to build args.
This patch factor out the code in hexagon::Link::ConstructJob to be reused
in other functions. No functionality change intended.

llvm-svn: 236926
2015-05-09 02:13:25 +00:00
Renato Golin 0600e1ebe9 Using ARMTargetParser in Clang
This is a starting point for using the TargetParser in Clang, in a simple
enough part of the code that can be used without disrupting the crazy
platform support that we need to be compatible with other toolchains.

Also adding a few FIXME on obvious places that need replacing, but those
cases will indeed break a few of the platform assumptions, as arch/cpu names
change multiple times in the driver.

Finally, I'm changing the "neon-vfpv3" behaviour to match standard NEON, since
-mfpu=neon implies vfpv3 by default in both Clang and LLVM. That option
string is still supported as an alias to "neon".

llvm-svn: 236901
2015-05-08 21:04:50 +00:00
Renato Golin 4045f66175 Revert "Allow case-insensitive values for -mcpu for ARM and AArch64"
This reverts commit r236859, as it broke multiple builds. I'll investigate
and reapply when safe.

llvm-svn: 236869
2015-05-08 15:44:36 +00:00
Renato Golin 9e36fb4c18 Allow case-insensitive values for -mcpu for ARM and AArch64
GCC allows case-insensitive values for -mcpu, -march and -mtune options.
This patch implements the same behaviour for the -mcpu option.

Patch by Gabor Ballabas.

llvm-svn: 236859
2015-05-08 14:50:32 +00:00
John Brawn a95c1a8315 [ARM] Give an error on invalid -march values
llvm::Triple::getARMCPUForArch now returns nullptr for invalid -march
values, instead of silently translating it to arm7tdmi. Use this to
give an error message, which is consistent with how gcc behaves.

Differential Revision: http://reviews.llvm.org/D9602

llvm-svn: 236846
2015-05-08 12:52:18 +00:00
Artem Belevich ba558951d8 [driver] Cosmetic change to use Input instead of Inputs[0].
Differential Revision: http://reviews.llvm.org/D9506

llvm-svn: 236621
2015-05-06 18:20:23 +00:00
Ulrich Weigand 66ff51b4ea [SystemZ] Add support for z13 and its vector facility
This patch adds support for the z13 architecture type.  For compatibility
with GCC, a pair of options -mvx / -mno-vx can be used to selectively
enable/disable use of the vector facility.

When the vector facility is present, we default to the new vector ABI.
This is characterized by two major differences:
- Vector types are passed/returned in vector registers
  (except for unnamed arguments of a variable-argument list function).
- Vector types are at most 8-byte aligned.

The reason for the choice of 8-byte vector alignment is that the hardware
is able to efficiently load vectors at 8-byte alignment, and the ABI only
guarantees 8-byte alignment of the stack pointer, so requiring any higher
alignment for vectors would require dynamic stack re-alignment code.

However, for compatibility with old code that may use vector types, when
*not* using the vector facility, the old alignment rules (vector types
are naturally aligned) remain in use.

These alignment rules are not only implemented at the C language level,
but also at the LLVM IR level.  This is done by selecting a different
DataLayout string depending on whether the vector ABI is in effect or not.

Based on a patch by Richard Sandiford.

llvm-svn: 236531
2015-05-05 19:35:52 +00:00
Justin Bogner a71e681792 InstrProf: Support for setting profile output from command line
This change is the third of 3 patches to add support for specifying
the profile output from the command line via -fprofile-instr-generate=<path>,
where the specified output path/file will be overridden by the
LLVM_PROFILE_FILE environment variable.

This patch adds the necessary support to the clang frontend, and adds a
new test.

The compiler-rt and llvm parts are r236055 and r236288, respectively.

Patch by Teresa Johnson. Thanks!

llvm-svn: 236289
2015-04-30 23:49:42 +00:00
Nico Weber 6e0ebaea1f Revert r236060, it caused PR23375.
llvm-svn: 236159
2015-04-29 21:16:40 +00:00
Eric Christopher 52fa24172f Stop emitting the soft-float and soft-float-abi target features
for ARM while the backend will only ignore them. No functional
change intended.

llvm-svn: 236060
2015-04-28 23:18:33 +00:00
Alexey Samsonov 381845d54f Introduce tsan_cxx and msan_cxx libraries (Clang part).
For now tsan_cxx and msan_cxx contain only operator new/delete
replacements. In the future, when we add support for running UBSan+TSan
and UBSan+MSan, they will also contain bits ubsan_cxx runtime.

llvm-svn: 235924
2015-04-27 22:07:50 +00:00
Artem Belevich c3e2fd7bea Revert "PR21000: pass -I options to assembler" as the test was failing on hexagon.
llvm-svn: 235919
2015-04-27 21:11:08 +00:00
Artem Belevich 8fe8ed56ee PR21000: pass -I options to assembler
Pass -I options to assembly so it can find files included with
.include.

Differential Revision: http://reviews.llvm.org/D7472

llvm-svn: 235915
2015-04-27 20:51:44 +00:00
Paul Robinson d7214a7651 Support generating NMake/Jom-style depfiles.
NMake is a Make-like builder that comes with Microsoft Visual Studio.
Jom (https://wiki.qt.io/Jom) is an NMake-compatible build tool.
Dependency files for NMake/Jom need to use double-quotes to wrap
filespecs containing special characters, instead of the backslash
escapes that GNU Make wants.

Adds the -MV option, which specifies to use double-quotes as needed
instead of backslash escapes when writing the dependency file.

Differential Revision: http://reviews.llvm.org/D9260

llvm-svn: 235903
2015-04-27 18:14:32 +00:00
Vladimir Sukharev e851e04262 [AArch64] Add v8.1a architecture
Add support for AArch64 v8.1 architecture. Briefly it is described on http://community.arm.com/groups/processors/blog/2014/12/02/the-armv8-a-architecture-and-its-ongoing-development

Reviewers: jmolloy

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D8493

llvm-svn: 235110
2015-04-16 15:53:09 +00:00
Duncan P. N. Exon Smith bb61825cd5 uselistorder: -mllvm -preserve-bc-use-list-order => -emit-llvm-uselists
Stop relying on `cl::opt` to pass along the driver's decision to
preserve use-lists.  Create a new `-cc1` option called
`-emit-llvm-uselists` that does the right thing (when -emit-llvm-bc).
Note that despite its generic name, it *doesn't* do the right thing when
-emit-llvm (LLVM assembly) yet.  I'll hook that up soon.

This doesn't really change the behaviour of the driver.  The default is
still to preserve use-lists for `clang -emit-llvm` and `clang
-save-temps`, and nothing else.  But it stops relying on global state
(and also is a nicer interface for hackers using `clang -cc1`).

llvm-svn: 234962
2015-04-15 01:16:18 +00:00
Duncan P. N. Exon Smith d863f6f250 IR: Change clang to set -preserve-bc-uselistorder
Change `clang` to set `-preserve-bc-uselistorder` for the driver options
`-emit-llvm` and `-save-temps`.  The former is useful for reproducing
results from `clang` in `opt` or `llc`, while the latter prevents
`-save-temps` from affecting the output.  This is part of PR5680.

`-preserve-bc-uselistorder=true` is currently on by default, but a
follow-up commit in LLVM will reverse it.

llvm-svn: 234920
2015-04-14 18:30:13 +00:00
Petar Jovanovic 1dbc317736 [Mips] Generate warning for invalid '-mnan' and '-march' combinations
This patch generates a warning for invalid combination of '-mnan' and
'-march' options, it properly sets NaN encoding for a given '-march',
and it passes a proper NaN encoding to the assembler.

Patch by Vladimir Radosavljevic.

Differential Revision: http://reviews.llvm.org/D8170

llvm-svn: 234882
2015-04-14 12:49:08 +00:00
Ahmed Bougacha 256a869d31 [Driver] Properly support -mglobal-merge using explicit options.
Follow-up to r234666.  With this, the -m[no-]global-merge options
have the expected behavior. Previously, -mglobal-merge was ignored,
and there was no way of enabling the optimization.

llvm-svn: 234668
2015-04-11 00:10:44 +00:00
Derek Schuff a419e1ce6c NaCl ARM: fix assembler float abi flags
Summary:
tools::arm::getARMFloatABI() was falling back to guessing soft-float because
it wasn't seeing the GNUEABIHF environment from ComputeEffectivClangTriple
when it was called from gnutools::Assemble::ConstructJob.

Fix by using the effective clang triple in gnutools::Assemble, which now
matches the -triple flag used by cc1 and ClangAs jobs.

Reviewers: jvoung

Subscribers: rengolin, jfb, aemerson, cfe-commits

Differential Revision: http://reviews.llvm.org/D8902

llvm-svn: 234661
2015-04-10 23:07:19 +00:00
Sanjay Patel 359b105745 Process the -freciprocal-math optimization flag (PR20912)
The driver currently accepts but ignores the -freciprocal-math flag.
This patch passes the flag through and enables 'arcp' fast-math-flag
generation in IR.

Note that this change does not actually enable the optimization for
any target. The reassociation optimization that this flag specifies
was implemented by http://reviews.llvm.org/D6334 :
http://llvm.org/viewvc/llvm-project?view=revision&revision=222510

Because the optimization is done in the backend rather than IR,
the backend must be modified to understand instruction-level
fast-math-flags or a new function-level attribute must be created.

Also note that -freciprocal-math is independent of any target-specific
usage of reciprocal estimate hardware instructions. That requires
its own flag ('-mrecip').

https://llvm.org/bugs/show_bug.cgi?id=20912

llvm-svn: 234493
2015-04-09 15:03:23 +00:00
Javed Absar 879d18b843 [ARM] add support for Cortex-R4/R4F
Adds ARM Cortex-R4 and R4F support and tests in Clang. Though Cortex-R4
support was present, the support for hwdiv in thumb-mode was not defined
or tested properly. This has also been added.

llvm-svn: 234488
2015-04-09 14:12:10 +00:00
Rafael Espindola 298059a4ac This reverts commit r234104, bringing back 233393 now that ARM is fixed.
Original message:

Don't use unique section names by default if using the integrated as.

This saves some IO and ccache space by not creating long section names. It
should work with every ELF linker.

llvm-svn: 234143
2015-04-06 04:36:45 +00:00
Rafael Espindola d7329ef99f Revert "Revert "Revert "Don't use unique section names by default if using the integrated as."""
This reverts commit r234101. I will debug what went wrong with ARM.

llvm-svn: 234104
2015-04-04 19:32:41 +00:00
Rafael Espindola 321fabfd8e Revert "Revert "Don't use unique section names by default if using the integrated as.""
This reverts commit r233398, bringing back 233393 now that LLVM is fixed.

Original message:

Don't use unique section names by default if using the integrated as.

This saves some IO and ccache space by not creating long section names. It
should work with every ELF linker.

llvm-svn: 234101
2015-04-04 18:21:14 +00:00
Eric Christopher 269c2a29ef Complete comment. Reflow conditional.
llvm-svn: 234083
2015-04-04 03:34:43 +00:00
Alexey Samsonov 31095469aa [UBSan] Embed UBSan into ASan runtime (Clang part).
Summary:
Change the way we use ASan and UBSan together. Instead of keeping two
separate runtimes (libclang_rt.asan and libclang_rt.ubsan), embed UBSan
into ASan and get rid of libclang_rt.ubsan. If UBSan is not supported on
a platform, all UBSan sources are just compiled into dummy empty object
files. UBSan initialization code (e.g. flag parsing) is directly called
from ASan initialization, so we are able to enforce correct
initialization order.

This mirrors the approach we already use for ASan+LSan. This change doesn't
modify the way we use standalone UBSan.

Test Plan: regression test suite

Reviewers: kubabrecka, zaks.anna, kcc, rsmith

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D8645

llvm-svn: 233860
2015-04-01 22:42:25 +00:00
Ulrich Weigand 3a610ebf1e [SystemZ] Support transactional execution on zEC12
The zEC12 provides the transactional-execution facility.  This is exposed
to users via a set of builtin routines on other compilers.  This patch
adds clang support to enable those builtins.  In partciular, the patch:

- enables the transactional-execution feature by default on zEC12
- allows to override presence of that feature via the -mhtm/-mno-htm options
- adds a predefined macro __HTM__ if the feature is enabled
- adds support for the transactional-execution GCC builtins
- adds Sema checking to verify the __builtin_tabort abort code
- adds the s390intrin.h header file (for GCC compatibility)
- adds s390 sections to the htmintrin.h and htmxlintrin.h header files

Since this is first use of target-specific intrinsics on the platform,
the patch creates the include/clang/Basic/BuiltinsSystemZ.def file and
hooks it up in TargetBuiltins.h and lib/Basic/Targets.cpp.

An associated LLVM patch adds the required LLVM IR intrinsics.

For reference, the transactional-execution instructions are documented
in the z/Architecture Principles of Operation for the zEC12:
http://publibfp.boulder.ibm.com/cgi-bin/bookmgr/download/DZ9ZR009.pdf
The associated builtins are documented in the GCC manual:
http://gcc.gnu.org/onlinedocs/gcc/S_002f390-System-z-Built-in-Functions.html
The htmxlintrin.h intrinsics provided for compatibility with the IBM XL
compiler are documented in the "z/OS XL C/C++ Programming Guide".

llvm-svn: 233804
2015-04-01 12:54:25 +00:00
Craig Topper a8bd6008ee [X86] Use getHostCPUFeatures when 'native' is specified for cpu.
This is necessary because not aall Sandybridge, Ivybrige, Haswell, and Broadwell CPUs support AVX. Currently we modify the CPU name back to Nehalem for this case, but that turns off additional features for these CPUs.

llvm-svn: 233672
2015-03-31 05:45:00 +00:00
Derek Schuff 6ab52fabcf Add driver support for Native Client SDK
Add Tool and ToolChain support for clang to target the NaCl OS using the NaCl
SDK for x86-32, x86-64 and ARM.

Includes nacltools::Assemble and Link which are derived from gnutools. They
are similar to Linux but different enought that they warrant their own class.
Also includes a NaCl_TC in ToolChains derived from Generic_ELF with library
and include paths suitable for an SDK and independent of the system tools.

Differential Revision: http://reviews.llvm.org/D8590

llvm-svn: 233594
2015-03-30 20:31:33 +00:00
Rafael Espindola d053d20d0d Revert "Don't use unique section names by default if using the integrated as."
This reverts commit r233393 while a debug a bot failure.

llvm-svn: 233398
2015-03-27 19:01:14 +00:00
Rafael Espindola 463a0afe15 Don't use unique section names by default if using the integrated as.
This saves some IO and ccache space by not creating long section names. It
should work with every ELF linker.

llvm-svn: 233393
2015-03-27 17:55:23 +00:00
Ed Schouten 6e57615ac8 Enable -ffunction-sections and -fdata-sections for CloudABI by default.
Unlike most of the other platforms supported by Clang, CloudABI only
supports static linkage, for the reason that global filesystem access is
prohibited. Functions provided by dlfcn.h are not present. As we know
that applications will not try to do any symbol lookups at run-time, we
can garbage collect unused code quite aggressively. Because of this, it
makes sense to enable -ffunction-sections and -fdata-sections by
default.

Object files will be a bit larger than usual, but the resulting binary
will not be affected, as the sections are merged again. However, when
--gc-sections is used, the linker is able to remove unused code far more
more aggressively. It also has the advantage that transitive library
dependencies only need to be provided to the linker in case that
functionality is actually used.

Differential Revision:	http://reviews.llvm.org/D8635
Reviewed by:	echristo

llvm-svn: 233299
2015-03-26 17:50:28 +00:00
Ed Schouten 3c3e58c42d Let Clang invoke CloudABI's linker.
Now that CloudABI's target information and header search logic for Clang
has been submitted, the only thing that remains to be done is adding
support for CloudABI's linker.

CloudABI uses Binutils ld, although there is some work to use lld
instead. This means that this code is largely based on what we use on
FreeBSD. There are some exceptions, however:

- Only static linking is performed. CloudABI does not support any
  dynamically linked executables.
- CloudABI uses compiler-rt, libc++ and libc++abi unconditionally. Link
  in these libraries instead of using libgcc_s, libstdc++, etc.
- We must ensure that the .eh_frame_hdr is present to make C++
  exceptions work properly.


Differential Revision:	http://reviews.llvm.org/D8250

llvm-svn: 233269
2015-03-26 11:13:44 +00:00
Alexey Samsonov 3ae177cdb3 [UBSan] Introduce "ubsan_standalone" library (Clang part).
Get rid of "libclang_rt.san" library that used to contain
sanitizer_common pieces required by UBSan if it's used in a standalone
mode. Instead, build two variants of UBSan runtime: "ubsan" and
"ubsan_standalone" (same for "ubsan_cxx" and "ubsan_standalone_cxx").

Later "ubsan" and "ubsan_cxx" libraries will go away, as they will
embedded it into corresponding ASan runtimes.

llvm-svn: 233010
2015-03-23 20:05:42 +00:00
Eric Christopher c54920a123 Fix and update comments and a small reformatting.
llvm-svn: 232997
2015-03-23 19:26:05 +00:00
Scott Douglass 3205f52198 handle armeb/thumb/thumbeb consistently in gnutools::Assemble::ConstructJob
Differential Revision: http://reviews.llvm.org/D8196

llvm-svn: 232940
2015-03-23 10:54:24 +00:00
Scott Douglass d4cfffccc7 Convert cascading if-else-if to switch. NFC
Differential Revision: http://reviews.llvm.org/D8485

llvm-svn: 232939
2015-03-23 10:46:28 +00:00
David Majnemer c371ff048d MS ABI: Implement driver-level support for thread-safe statics
Decide whether or not to use thread-safe statics depending on whether or
not we have an explicit request from the driver.  If we don't have an
explicit request, infer which behavior to use depending on the
compatibility version we are targeting.

N.B. CodeGen support is still ongoing.

llvm-svn: 232906
2015-03-22 08:39:22 +00:00
Filipe Cabecinhas c473255110 Only add -fno-rtti if KernelOrKext or in C++ mode.
llvm-svn: 232869
2015-03-20 23:51:15 +00:00
Reid Kleckner 7ffc3fbb2f C++14: Disable sized deallocation by default due to ABI breakage
There are no widely deployed standard libraries providing sized
deallocation functions, so we have to punt and ask the user if they want
us to use sized deallocation. In the future, when such libraries are
deployed, we can teach the driver to detect them and enable this
feature.

N3536 claimed that a weak thunk from sized to unsized deallocation could
be emitted to avoid breaking backwards compatibility with standard
libraries not providing sized deallocation. However, this approach and
other variations don't work in practice.

With the weak function approach, the thunk has to have default
visibility in order to ensure that it is overridden by other DSOs
providing sized deallocation. Weak, default visibility symbols are
particularly expensive on MachO, so John McCall was considering
disabling this feature by default on Darwin. It also changes behavior
ELF linking behavior, causing certain otherwise unreferenced object
files from an archive to be pulled into the link.

Our second approach was to use an extern_weak function declaration and
do an inline conditional branch at the deletion call site. This doesn't
work because extern_weak only works on MachO if you have some archive
providing the default value of the extern_weak symbol. Arranging to
provide such an archive has the same challenges as providing the symbol
in the standard library. Not to mention that extern_weak doesn't really
work on COFF.

Reviewers: rsmith, rjmccall

Differential Revision: http://reviews.llvm.org/D8467

llvm-svn: 232788
2015-03-20 00:31:07 +00:00
Manuel Klimek c68aa16d46 Add option to switch off putting header modules into the dependency file.
llvm-svn: 232721
2015-03-19 12:00:22 +00:00
Yaron Keren 92e1b62d45 Remove many superfluous SmallString::str() calls.
Now that SmallString is a first-class citizen, most SmallString::str()
calls are not required. This patch removes a whole bunch of them, yet
there are lots more.

There are two use cases where str() is really needed:
1) To use one of StringRef member functions which is not available in
SmallString.
2) To convert to std::string, as StringRef implicitly converts while 
SmallString do not. We may wish to change this, but it may introduce
ambiguity.

llvm-svn: 232622
2015-03-18 10:17:07 +00:00
Michael Zolotukhin d0cf6c852a Imply linker arguments from '-fveclib' option.
Summary: As discussed in D8097, we should provide corresponding linking flags when 'fveclib' is specified.

Reviewers: hfinkel

Differential Revision: http://reviews.llvm.org/D8362

llvm-svn: 232556
2015-03-17 22:13:05 +00:00
Michael Zolotukhin c888dd0cb8 Add fveclib option.
Review: http://reviews.llvm.org/D8097
llvm-svn: 232533
2015-03-17 20:03:11 +00:00
Renato Golin e11531f7ea [ARM] Add support for ARMV6K subtarget (Clang)
ARMv6K is another layer between ARMV6 and ARMV6T2. This is the Clang
side of the changes.

ARMV6 family LLVM implementation.

+-------------------------------------+
| ARMV6                               |
+----------------+--------------------+
| ARMV6M (thumb) | ARMV6K (arm,thumb) | <- From ARMV6K and ARMV6M processors
+----------------+--------------------+    have support for hint instructions
| ARMV6T2 (arm,thumb,thumb2)          |    (SEV/WFE/WFI/NOP/YIELD). They can
+-------------------------------------+    be either real or default to NOP.
| ARMV7 (arm,thumb,thumb2)            |    The two processors also use
+-------------------------------------+    different encoding for them.

Patch by Vinicius Tinti.

llvm-svn: 232469
2015-03-17 11:55:43 +00:00
Nico Weber 3f8dafb021 Fix grammar in a comment, wrap to 80 columns. No behavior change.
llvm-svn: 232087
2015-03-12 19:37:10 +00:00
Hal Finkel 0d0a1a53e3 [PowerPC] ABI support for the QPX vector instruction set
Support for the QPX vector instruction set, used on the IBM BG/Q supercomputer,
has recently been added to the LLVM PowerPC backend. This vector instruction
set requires some ABI modifications because the ABI on the BG/Q expects
<4 x double> vectors to be provided with 32-byte stack alignment, and to be
handled as native vector types (similar to how Altivec vectors are handled on
mainline PPC systems). I've named this ABI variant elfv1-qpx, have made this
the default ABI when QPX is supported, and have updated the ABI handling code
to provide QPX vectors with the correct stack alignment and associated
register-assignment logic.

llvm-svn: 231960
2015-03-11 19:14:15 +00:00
Nico Weber e93bcd1752 Gender-neutralize a comment.
llvm-svn: 231891
2015-03-11 00:05:26 +00:00
Chandler Carruth 7e7dd47fc2 Much like we silence warnings about -flto in many cases to facilitate
simplicity in build systems, silence '-stdlib=libc++' when linking. Even
if we're not linking C++ code per-se, we may be passing this flag so
that when we are linking C++ code we pick up the desired standard
library. While most build systems already provide separate C and C++
compile flags, many conflate link flags. Sadly, CMake is among them
causing this warning in a libc++ selfhost.

llvm-svn: 231559
2015-03-07 10:01:29 +00:00
Hans Wennborg e4c47f2e8b Pass -dll to link.exe when building with -shared (PR22697)
And start building a test for non-clang-cl link.exe invocations.

llvm-svn: 231312
2015-03-04 23:16:21 +00:00
Dan Albert 77214a4498 Don't force -pie for Android.
Summary:
There is no -no-pie flag that can override this, so making it default
to being on for Android means it is no longer possible to create
non-PIE executables on Android. While current versions of Android
support (and the most recent requires) PIE, ICS and earlier versions
of Android cannot run PIE executables, so this needs to be optional.

Reviewers: srhines

Reviewed By: srhines

Subscribers: thakis, volkalexey, cfe-commits

Differential Revision: http://reviews.llvm.org/D8015

llvm-svn: 231091
2015-03-03 18:24:57 +00:00
Fariborz Jahanian 773fa2cb03 [SDK modernizer]. Patch fixes driver's lack of
recognition of mernizer's -objcmt-migrate-property-dot-syntax
option with a new test in test/Driver. rdar://19994452

llvm-svn: 231080
2015-03-03 17:15:38 +00:00
Daniel Jasper 34d761d893 Revert r231008 (and dependent r231019).
As Chandler responded on the initial commit, just directly setting the
triple through -Xclang option to the driver creates havoc on other
platforms. The driver test should specifically go into test/Driver and
test the cc1 commandline itself.

llvm-svn: 231063
2015-03-03 10:02:53 +00:00
Fariborz Jahanian 4c616d4df5 [SDK modernizer]. Patch fixes driver's lack of
recognition of mernizer's -objcmt-migrate-property-dot-syntax
option. rdar://19994452

llvm-svn: 231008
2015-03-02 20:43:32 +00:00
Bob Wilson b111ec94b3 Add clang support for Objective-C application extensions.
This adds the -fapplication-extension option, along with the
ios_app_extension and macosx_app_extension availability attributes.
Patch by Ted Kremenek

llvm-svn: 230989
2015-03-02 19:01:14 +00:00
Benjamin Kramer 33335df819 Add missing include.
llvm-svn: 230910
2015-03-01 21:36:40 +00:00
Reid Kleckner 1df0fea593 Add -fuse-line-directive flag to control usage of #line with -E
Currently -fms-extensions controls this behavior, which doesn't make
much sense. It means we can't identify what is and isn't a system header
when compiling our own preprocessed output, because #line doesn't
represent this information.

If someone is feeding Clang's preprocessed output to another compiler,
they can use this flag.

Fixes PR20553.

Reviewers: rsmith

Differential Revision: http://reviews.llvm.org/D5217

llvm-svn: 230587
2015-02-26 00:17:25 +00:00
Reid Kleckner c4da9c8e50 -fms-extensions: Bump the default _MSC_VER from 1700 to 1800, aka VS2013
VS 2013 is the minimum supported version, so it's reasonable for Clang
to simulate this by default. This also simplifies the clang-cl
self-host, since we have the 18.00 version check.

llvm-svn: 230243
2015-02-23 19:25:48 +00:00
Larisse Voufo dcc0eddd18 Move -fdefine-sized-deallocation and -fno-sized-deallocation options from driver into CC1 for now.
llvm-svn: 230112
2015-02-21 01:03:48 +00:00
Simon Atanasyan 162feb5f8e [Mips] Support mips32r3, mips32r5, mips64r3, mips64r5 MIPS ISA names
The patch teaches the clang's driver to understand new MIPS ISA names,
pass appropriate options to the assembler, defines corresponding macros etc

http://reviews.llvm.org/D7737

llvm-svn: 230092
2015-02-20 23:37:40 +00:00
Peter Collingbourne a4ccff3281 Implement Control Flow Integrity for virtual calls.
This patch introduces the -fsanitize=cfi-vptr flag, which enables a control
flow integrity scheme that checks that virtual calls take place using a vptr of
the correct dynamic type. More details in the new docs/ControlFlowIntegrity.rst
file.

It also introduces the -fsanitize=cfi flag, which is currently a synonym for
-fsanitize=cfi-vptr, but will eventually cover all CFI checks implemented
in Clang.

Differential Revision: http://reviews.llvm.org/D7424

llvm-svn: 230055
2015-02-20 20:30:56 +00:00
Rafael Espindola 6b07a1c6ee Add -funique-section-names and -fno-unique-section-names options.
For now -funique-section-names is the default, so no change in default behavior.

The total .o size in a build of llvm and clang goes from 241687775 to 230649031
bytes if -fno-unique-section-names is used.

llvm-svn: 230031
2015-02-20 18:08:57 +00:00
Manuel Klimek d2e8b04d61 Add -fno-implicit-modules.
If this flag is set, we error out when a module build is required. This is
useful in environments where all required modules are passed via -fmodule-file.

llvm-svn: 230006
2015-02-20 11:44:41 +00:00
Larisse Voufo 89088232b2 Add -fno-sized-deallocation option for completeness of fix in r229241 in documentation in r229818.
llvm-svn: 229950
2015-02-20 02:07:22 +00:00
Filipe Cabecinhas ec5d0e6423 Improve our handling of rtti/sanitize=vptr/sanitize=undefined
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
2015-02-19 01:04:49 +00:00
Bradley Smith d86d670e85 [ARM] Add missing M/R class CPUs
Add some of the missing M and R class Cortex CPUs, namely:

Cortex-M0+ (called Cortex-M0plus for GCC compatibility)
Cortex-M1
SC000
SC300
Cortex-R5

llvm-svn: 229661
2015-02-18 10:34:48 +00:00
Larisse Voufo e990a3f60c Rename flags and options to match current naming: from -fdef-sized-delete to -fdefine-sized-deallocation, and from DefaultSizedDelete to DefineSizedDeallocation.
llvm-svn: 229597
2015-02-18 01:04:10 +00:00
Benjamin Kramer 320fc2657b Replace snprintf with a Twine. NFC.
llvm-svn: 229264
2015-02-14 18:19:55 +00:00
Larisse Voufo 5526f4f094 Revise the implementation logic of sized deallocation: Do not automatically generate weak definitions of the sized operator delete (in terms of unsized operator delete). Instead, provide the funcitonality via a new compiler flag, -fdef-sized-delete.
The current implementation causes link-time ODR violations when the delete symbols are exported into the dynamic table.

llvm-svn: 229241
2015-02-14 05:42:57 +00:00
David Majnemer a5b195a1dc Revert "Revert r229082 for a bit, it caused PR22577."
This reverts commit r229123.  It was a red herring, the bug was present
without r229082.

llvm-svn: 229205
2015-02-14 01:35:12 +00:00
Nico Weber 7ce96b853d Revert r229082 for a bit, it caused PR22577.
llvm-svn: 229123
2015-02-13 16:27:00 +00:00
David Majnemer abc482effc MS ABI: Implement /volatile:ms
The /volatile:ms semantics turn volatile loads and stores into atomic
acquire and release operations.  This distinction is important because
volatile memory operations do not form a happens-before relationship
with non-atomic memory.  This means that a volatile store is not
sufficient for implementing a mutex unlock routine.

Differential Revision: http://reviews.llvm.org/D7580

llvm-svn: 229082
2015-02-13 07:55:47 +00:00
Bill Schmidt 911b7b1de6 [PowerPC] Remove the --no-tls-optimize workaround from the clang driver
llvm-svn: 228739
2015-02-10 20:36:08 +00:00
Steven Wu 3ffb61b4ae -iframework option should be forwarded to linker
Summary:
-iframework option is used to specified System framework path so the
path specified should be passed to linker as -F option
rdar://problem/18234544

Reviewers: bob.wilson

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D7106

llvm-svn: 228413
2015-02-06 18:08:29 +00:00
Bill Schmidt 12ba5fd491 [PowerPC] Re-disable linker optimizations for now
llvm-svn: 228402
2015-02-06 15:31:03 +00:00
Reid Kleckner deeddeced3 Re-land r228258 and make clang-cl's /EHs- disable -fexceptions again
After r228258, Clang started emitting C++ EH IR that LLVM wasn't ready
to deal with, even when exceptions were disabled with /EHs-. This time,
make /EHs- turn off -fexceptions while still emitting exceptional
constructs in functions using __try.  Since Sema rejects C++ exception
handling constructs before CodeGen, landingpads should only appear in
such functions as the result of a __try.

llvm-svn: 228329
2015-02-05 18:56:03 +00:00
Bill Schmidt 0a9c061343 [PowerPC] Revert workaround for TLS linker bug
In r227480, Ulrich Weigand introduced a workaround for a linker
optimization bug that can create mis-optimized code for accesses to
general-dynamic or local-dynamic TLS variables.  The linker
optimization bug only occurred for Clang/LLVM because of some
inefficient code being generated for these TLS accesses.  I have
recently corrected LLVM to produce the efficient code sequence
expected by the linkers, so this workaround is no longer needed.
Therefore this patch reverts r227480.

I've tested that the previous bootstrap failure no longer occurs with
the workaround reverted.

llvm-svn: 228253
2015-02-05 01:12:24 +00:00
Reid Kleckner 86ea770775 Driver: Stop forcing frame pointer usage on Windows
Previously, we would use a frame pointer by default on non-Linux OSs. On
Linux, any optimization flags imply -fomit-frame-pointer. XCore always
defaulted to -fomit-frame-pointer.

Now x86 Windows matches our behavior on Linux. All other ISAs supported
by Windows (ARM, x64) use xdata information, and frame pointers aren't
useful. Frame pointers are now off by default for such targets, but can
be forced via -fno-omit-frame-pointer and code using alloca().

In fact, on Win64 our frame-pointer prologue is not describable with
UNWIND_INFO. This change is a workaround to avoid using the broken FP
using prologue for most functions. This is PR22467.

llvm-svn: 228236
2015-02-04 23:45:07 +00:00
Ben Langmuir e056ec32cd Replace isalnum with isAlphanumeric per review
Thanks Dmitri!

llvm-svn: 228163
2015-02-04 18:34:23 +00:00
Renato Golin 84545d7a5c Teaches the Clang driver to accept Cortex-A72
A previous commit added Cortex-A72 to LLVM, this teaches Clang to
accept it as well.

Patch by Ranjeet Singh.

llvm-svn: 228141
2015-02-04 13:31:56 +00:00
Ben Langmuir 3b7b540680 Make the default module cache user-specific
Appends the username to the first component (after the temp dir) of the
module cache path.  If the username contains a character that shouldn't
go into a path (for now conservatively allow [a-zA-Z0-9_]), we fallback
to the user id.

llvm-svn: 228013
2015-02-03 19:28:37 +00:00
Rafael Espindola 3e34e6546e Use CLANG_LIBDIR_SUFFIX when looking for the gold plugin.
Patch by İsmail Dönmez!

llvm-svn: 227979
2015-02-03 16:33:53 +00:00
Reid Kleckner 68eb60b8c4 PR 17421: Implemented -save-temps={obj|cwd} option
-save-temps=cwd is equivalent to -save-temps
-save-temps=obj saves temporary file in the same directory as output

This helps to avoid clobbering of temp files in case of parallel
compilation with -save-temps of the files that have the same name
but located in different directories.

Patch by Artem Belevich

Reviewed By: rnk

Differential Revision: http://reviews.llvm.org/D7304

llvm-svn: 227886
2015-02-02 22:41:48 +00:00
Filipe Cabecinhas f2a3aec5c7 Tweak behavior due to -fexceptions, in C++ mode, imply -fcxx-exceptions
Added test

llvm-svn: 227695
2015-01-31 23:05:51 +00:00
Eric Christopher 58c2199cef Fix regression in r227409 where we were passing -fsyntax-only
in all cases.

Patch by Artem Belevich.

llvm-svn: 227591
2015-01-30 18:22:23 +00:00
Daniel Sanders 7f933f4c5e [mips] Pass ABI name via -target-abi instead of target-features
Patch by Vladimir Medic

Reviewers: echristo, atanasyan, dsanders

Reviewed By: atanasyan, dsanders

Subscribers: llvm-commits, echristo, atanasyan

Differential Revision: http://reviews.llvm.org/D6091

llvm-svn: 227583
2015-01-30 17:35:23 +00:00
Filipe Cabecinhas c9c4025c8a Remove unneeded code
We don't really care about enabling RTTI with -fexceptions, only with
-fcxx-exceptions.

llvm-svn: 227567
2015-01-30 11:17:56 +00:00
Reid Kleckner ab80f18f57 clang-cl: Enable -fexceptions but not -fcxx-exceptions by default
This enables proper IRgen of SEH constructs.

llvm-svn: 227528
2015-01-30 01:04:16 +00:00
Filipe Cabecinhas 28f353c7d0 Add some more PS4 driver settings related to rtti and exceptions.
Summary:
The PS4 defaults to -fno-rtti, and has to have rtti enabled when enabling
exceptions.

This commit makes clang add the -fno-rtti by default on the PS4, unless
-frtti was passed in.

It also diagnoses misuses for the PS4:
- Exceptions need rtti. Warn and enable rtti if no rtti flag was passed,
  error if -fno-rtti was passed.

I also added a more general warning for when -fno-rtti is the default
(currently it's only on the PS4) and the vptr sanitizer is on.

Fixed a few tests, due to different flag order when passing cc1 arguments.

Reviewers: chandlerc

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D7250

llvm-svn: 227518
2015-01-29 23:56:43 +00:00
Ulrich Weigand f32a1acee8 [PowerPC] Work around TLS linker bug
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
2015-01-29 19:08:51 +00:00
Eric Christopher cc7ff50e43 Ensure that -fsyntax-only with fortran 90 passes along silently
to the underlying gcc.
PR22234

Patch by Artem Belevich.

llvm-svn: 227409
2015-01-29 00:56:17 +00:00
Joerg Sonnenberger 1689d3f732 For the --be8 flag, check explicitly for pre-v7 / pre-v6m cores.
Those used the old Big Endian support on ARM and don't need flags.
Refactor the logic in a separate common function, which also looks at
-march. Add corresponding logic for the Linux toolchain.

llvm-svn: 227393
2015-01-28 23:30:39 +00:00
Dan Albert 6f2875d834 [clang] Use -android environment for all compiler-rt libs.
Summary:
This was already done for the sanitizers, but it needs to be done for
the profile and builtin libs as well.

Reviewers: srhines, timmurray, eugenis, samsonov

Reviewed By: samsonov

Subscribers: compnerd, cfe-commits

Differential Revision: http://reviews.llvm.org/D7187

llvm-svn: 227392
2015-01-28 23:23:36 +00:00
Filipe Cabecinhas b1e6c2dd3d Fix part of r227215. PS4 code just omits leaf frame pointers.
llvm-svn: 227219
2015-01-27 18:08:32 +00:00
Filipe Cabecinhas 4b44257c54 Added more PS4 defaults for code generation
llvm-svn: 227215
2015-01-27 17:27:37 +00:00
Joerg Sonnenberger dceac987bd For NetBSD/ARM-EB, link with --be8. Support for the older BE32 is
currently not planned.

llvm-svn: 227088
2015-01-26 12:30:16 +00:00
Renato Golin b625f48862 Allows Clang to use LLVM's fixes-x18 option
This patch allows clang to have llvm reserve the x18
platform register on AArch64. FreeBSD will use this in the kernel for
per-cpu data but has no need to reserve this register in userland so
will need this flag to reserve it.

This uses llvm r226664 to allow this register to be reserved.

Patch by Andrew Turner.

llvm-svn: 227062
2015-01-25 23:17:48 +00:00
Sanjay Patel 76c9e0986c Process the -fno-signed-zeros optimization flag (PR20870)
The driver currently accepts but ignores the -fno-signed-zeros flag. 
This patch passes the flag through and enables 'nsz' fast-math-flag 
generation in IR.

The existing OpenCL flag for the same functionality is made into an
alias here. It may be removed in a subsequent patch.

This should resolve bug 20870 ( http://llvm.org/bugs/show_bug.cgi?id=20870 );
patches for the optimizer were checked in at:
http://llvm.org/viewvc/llvm-project?view=revision&revision=225050
http://llvm.org/viewvc/llvm-project?view=revision&revision=224583

Differential Revision: http://reviews.llvm.org/D6873

llvm-svn: 226915
2015-01-23 16:40:50 +00:00
Hans Wennborg 77dc236605 Implement command line options for stack probe space
This code adds the -mstack-probe-size command line option and implements the /Gs
compiler switch for clang-cl.

This should fix http://llvm.org/bugs/show_bug.cgi?id=21896

Patch by Andrew H!

Differential Revision: http://reviews.llvm.org/D6685

llvm-svn: 226601
2015-01-20 19:45:50 +00:00