Commit Graph

64 Commits

Author SHA1 Message Date
Yaxun (Sam) Liu 98c21289f1 [CUDA][HIP] Add -fuse-cuid
This patch added a distinct CUID for each input file, which is represented by InputAction.
clang initially creates an InputAction for each input file for the host compilation. In CUDA/HIP action
builder, each InputAction is given a CUID and cloned for each GPU arch, and the CUID is also cloned. In this way,
we guarantee the corresponding device and host compilation for the same file shared the
same CUID. On the other hand, different compilation units have different CUID.

-fuse-cuid=random|hash|none is added to control the method to generate CUID. The default
is hash. -cuid=X is also added to specify CUID explicitly, which overrides -fuse-cuid.

Reviewed by: Artem Belevich

Differential Revision: https://reviews.llvm.org/D95007
2021-02-08 22:26:12 -05:00
Aaron En Ye Shi 4bafb0adcf Add Statically Linked Libraries
Add GNU Static Lib Tool, which supports the --emit-static-lib
flag. For HIP, a static library archive will be created and
consist of HIP Fat Binary host object with the device images embedded.
Using llvm-ar to create the static archive. Also, delete existing
output file to ensure a new archive is created each time.

Reviewers: yaxunl, tra, rjmccall, echristo

Subscribers: echristo, JonChesterfield, scchan, msearles

Differential Revision: https://reviews.llvm.org/D78759
2020-06-22 19:48:49 +00:00
Sergey Dmitriev a0d83768f1 [Clang][OpenMP Offload] Add new tool for wrapping offload device binaries
This patch removes the remaining part of the OpenMP offload linker scripts which was used for inserting device binaries into the output linked binary. Device binaries are now inserted into the host binary with a help of the wrapper bit-code file which contains device binaries as data. Wrapper bit-code file is dynamically created by the clang driver with a help of new tool clang-offload-wrapper which takes device binaries as input and produces bit-code file with required contents. Wrapper bit-code is then compiled to an object and resulting object is appended to the host linking by the clang driver.

This is the second part of the patch for eliminating OpenMP linker script (please see https://reviews.llvm.org/D64943).

Differential Revision: https://reviews.llvm.org/D68166

llvm-svn: 374219
2019-10-09 20:42:58 +00:00
Puyan Lotfi c382d03ca8 [clang][ifs] Clang Interface Stubs ToolChain plumbing.
Second Landing Attempt:

This patch enables end to end support for generating ELF interface stubs
directly from clang. Now the following:

clang -emit-interface-stubs -o libfoo.so a.cpp b.cpp c.cpp

will product an ELF binary with visible symbols populated. Visibility attributes
and -fvisibility can be used to control what gets populated.

* Adding ToolChain support for clang Driver IFS Merge Phase
* Implementing a default InterfaceStubs Merge clang Tool, used by ToolChain
* Adds support for the clang Driver to involve llvm-ifs on ifs files.
* Adds -emit-merged-ifs flag, to tell llvm-ifs to emit a merged ifs text file
  instead of the final object format (normally ELF)


Differential Revision: https://reviews.llvm.org/D63978

llvm-svn: 374061
2019-10-08 15:23:14 +00:00
Nico Weber 6713f8235b Revert 373538 and follow-ups 373549 and 373552.
They break tests on (at least) macOS.

llvm-svn: 373556
2019-10-03 02:38:43 +00:00
Puyan Lotfi 406de17b9b [clang][ifs] Clang Interface Stubs ToolChain plumbing.
This patch enables end to end support for generating ELF interface stubs
directly from clang. Now the following:

clang -emit-interface-stubs -o libfoo.so a.cpp b.cpp c.cpp

will product an ELF binary with visible symbols populated. Visibility attributes
and -fvisibility can be used to control what gets populated.

* Adding ToolChain support for clang Driver IFS Merge Phase
* Implementing a default InterfaceStubs Merge clang Tool, used by ToolChain
* Adds support for the clang Driver to involve llvm-ifs on ifs files.
* Adds -emit-merged-ifs flag, to tell llvm-ifs to emit a merged ifs text file
  instead of the final object format (normally ELF)


Differential Revision: https://reviews.llvm.org/D63978

llvm-svn: 373538
2019-10-02 22:50:07 +00:00
Chandler Carruth 2946cd7010 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00
Richard Smith cd35eff395 [modules] Driver support for precompiling a collection of files as a single
action.

llvm-svn: 342305
2018-09-15 01:21:16 +00:00
Yaxun Liu ac8ccd5879 [HIP] Fix output file extension
OffloadBundlingJobAction constructor accepts a list of JobAction as inputs.
The host JobAction is the last one. The file type of OffloadBundlingJobAction
should be determined by the host JobAction (the last one) instead of the first
one.

Since HIP emits LLVM bitcode for device compilation, device JobAction has
different file type as host Job Action. This bug causes incorrect output file
extension for HIP.

This patch fixes it by using the last input JobAction (host JobAction) to determine
file type of OffloadBundlingJobAction.

Differential Revision: https://reviews.llvm.org/D51336

llvm-svn: 340873
2018-08-28 21:09:09 +00:00
Yaxun Liu 398612b4c2 [HIP] Add hip offload kind
There are quite differences in HIP action builder and action job creation,
which justifies to define a separate offload kind.

Differential Revision: https://reviews.llvm.org/D46471

llvm-svn: 331811
2018-05-08 21:02:12 +00:00
Eugene Zelenko 5e4511cfc7 [Driver] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC).
llvm-svn: 328044
2018-03-20 21:08:59 +00:00
Simon Pilgrim 3315a6a662 Fix MSVC "not all control paths return a value" warning
Add unreachable after enum switch statement

llvm-svn: 285390
2016-10-28 10:09:35 +00:00
Samuel Antao 3b7e38b450 [Driver][OpenMP] Add support to create jobs for unbundling actions.
Summary:
This patch adds the support to create jobs for the `OffloadBundlingAction` which will invoke the `clang-offload-bundler` tool to unbundle input files.

Unlike other actions, unbundling actions have multiple outputs. Therefore, this patch adds the required changes to have a variant of `Tool::ConstructJob` with multiple outputs. 

The way the naming of the results is implemented is also slightly modified so that the same action can use a different offloading prefix for each use by the different offloading actions. 

With this patch, it is possible to compile a functional OpenMP binary with offloading support, even with separate compilation.

Reviewers: echristo, tra, jlebar, ABataev, hfinkel

Subscribers: mkuron, whchung, mehdi_amini, cfe-commits, Hahnfeld, andreybokhanko, arpith-jacob, carlo.bertolli, caomhin

Differential Revision: https://reviews.llvm.org/D21857

llvm-svn: 285326
2016-10-27 18:14:55 +00:00
Samuel Antao 7cab8f1466 [Driver][OpenMP] Add support to create jobs for bundling actions.
Summary: This patch adds the support to create a job for the `OffloadBundlingAction` which will invoke the `clang-offload-bundler` tool.

Reviewers: echristo, tra, jlebar, ABataev, hfinkel

Subscribers: whchung, mehdi_amini, cfe-commits, Hahnfeld, andreybokhanko, arpith-jacob, carlo.bertolli, caomhin

Differential Revision: https://reviews.llvm.org/D21856

llvm-svn: 285325
2016-10-27 18:04:42 +00:00
Samuel Antao fab4f37ef7 [Driver][OpenMP] Update actions builder to create unbundling action when necessary.
Summary:
Each time that offloading support is requested by the user and the input file is not a source file, an action `OffloadUnbundlingAction` is created to signal that the input file may contain bundles, so that the proper tool is then invoked to attempt to extract the components of the bundle. This patch adds the logic to create that action in offload action builder.

The job creation for the new action will be proposed in a separate patch.

Reviewers: echristo, tra, jlebar, ABataev, hfinkel

Subscribers: whchung, mehdi_amini, cfe-commits, Hahnfeld, andreybokhanko, arpith-jacob, carlo.bertolli, caomhin

Differential Revision: https://reviews.llvm.org/D21853

llvm-svn: 285324
2016-10-27 18:00:51 +00:00
Samuel Antao 69d6f31f74 [Driver][OpenMP] Update actions builder to create bundling action when necessary.
Summary:
In order to save the user from dealing with multiple output files (for host and device) while using separate compilation, a new action `OffloadBundlingAction` is used when the last phase is not linking. This action will then result in a job that uses the proposed bundling tool to create a single preprocessed/IR/ASM/Object file from multiple ones.

The job creation for the new action will be proposed in a separate patch.

Reviewers: echristo, tra, jlebar, ABataev, hfinkel

Subscribers: whchung, mehdi_amini, cfe-commits, Hahnfeld, andreybokhanko, arpith-jacob, carlo.bertolli, caomhin

Differential Revision: https://reviews.llvm.org/D21852

llvm-svn: 285323
2016-10-27 17:50:43 +00:00
Samuel Antao 39f9da2a87 [Driver][OpenMP] Create tool chains for OpenMP offloading kind.
Summary: This patch adds new logic to create the necessary tool chains to support offloading for OpenMP. The OpenMP related options are checked and the tool chains created accordingly. Diagnostics are emitted in case the options are illegal or express unknown targets.

Reviewers: echristo, tra, jlebar, rsmith, ABataev, hfinkel

Subscribers: whchung, mkuron, mehdi_amini, cfe-commits, Hahnfeld, arpith-jacob, carlo.bertolli, caomhin

Differential Revision: https://reviews.llvm.org/D21843

llvm-svn: 285311
2016-10-27 16:38:05 +00:00
Mehdi Amini 087f1fbb53 Rename variable to not use C++ reserved name (leading underscore + capital) (NFC)
llvm-svn: 283616
2016-10-07 22:03:03 +00:00
Mehdi Amini 44f0eda077 Fix MSVC build: requires namespace in front of StringRef (NFC)
llvm-svn: 283615
2016-10-07 22:02:59 +00:00
Mehdi Amini c50b1a263b Turn ArchName/BoundArch in Driver from raw pointer to StringRef (NFC)
llvm-svn: 283605
2016-10-07 21:27:26 +00:00
Eric Christopher 2a7248f06b Remove extra semi-colon. Fixes warning and Werror bots.
llvm-svn: 275655
2016-07-16 00:58:34 +00:00
Samuel Antao 2fd32138ef Attempt to fix breakage caused by r275645 for Windows bots.
llvm-svn: 275650
2016-07-15 23:51:21 +00:00
Samuel Antao d06239d359 [CUDA][OpenMP] Create generic offload action
Summary:
This patch replaces the CUDA specific action by a generic offload action. The offload action may have multiple dependences classier in “host” and “device”. The way this generic offloading action is used is very similar to what is done today by the CUDA implementation: it is used to set a specific toolchain and architecture to its dependences during the generation of jobs.

This patch also proposes propagating the offloading information through the action graph so that that information can be easily retrieved at any time during the generation of commands. This allows e.g. the "clang tool” to evaluate whether CUDA should be supported for the device or host and ptas to easily retrieve the target architecture.

This is an example of how the action graphs would look like (compilation of a single CUDA file with two GPU architectures)
```
0: input, "cudatests.cu", cuda, (host-cuda)
1: preprocessor, {0}, cuda-cpp-output, (host-cuda)
2: compiler, {1}, ir, (host-cuda)
3: input, "cudatests.cu", cuda, (device-cuda, sm_35)
4: preprocessor, {3}, cuda-cpp-output, (device-cuda, sm_35)
5: compiler, {4}, ir, (device-cuda, sm_35)
6: backend, {5}, assembler, (device-cuda, sm_35)
7: assembler, {6}, object, (device-cuda, sm_35)
8: offload, "device-cuda (nvptx64-nvidia-cuda:sm_35)" {7}, object
9: offload, "device-cuda (nvptx64-nvidia-cuda:sm_35)" {6}, assembler
10: input, "cudatests.cu", cuda, (device-cuda, sm_37)
11: preprocessor, {10}, cuda-cpp-output, (device-cuda, sm_37)
12: compiler, {11}, ir, (device-cuda, sm_37)
13: backend, {12}, assembler, (device-cuda, sm_37)
14: assembler, {13}, object, (device-cuda, sm_37)
15: offload, "device-cuda (nvptx64-nvidia-cuda:sm_37)" {14}, object
16: offload, "device-cuda (nvptx64-nvidia-cuda:sm_37)" {13}, assembler
17: linker, {8, 9, 15, 16}, cuda-fatbin, (device-cuda)
18: offload, "host-cuda (powerpc64le-unknown-linux-gnu)" {2}, "device-cuda (nvptx64-nvidia-cuda)" {17}, ir
19: backend, {18}, assembler
20: assembler, {19}, object
21: input, "cuda", object
22: input, "cudart", object
23: linker, {20, 21, 22}, image
```
The changes in this patch pass the existent regression tests (keeps the existent functionality) and resulting binaries execute correctly in a Power8+K40 machine.

Reviewers: echristo, hfinkel, jlebar, ABataev, tra

Subscribers: guansong, andreybokhanko, tcramer, mkuron, cfe-commits, arpith-jacob, carlo.bertolli, caomhin

Differential Revision: https://reviews.llvm.org/D18171

llvm-svn: 275645
2016-07-15 23:13:27 +00:00
Justin Lebar 4b926a29fd [CUDA] Add missing namespace qualification on CudaArch in Action.cpp.
Fix build breakage with MSVC.

llvm-svn: 274689
2016-07-06 21:45:44 +00:00
Justin Lebar 629076178a [CUDA] Add utility functions for dealing with CUDA versions / architectures.
Summary:
Currently our handling of CUDA architectures is scattered all around
clang.  This patch centralizes it.

A key advantage of this centralization is that you can now write a C++
switch on e.g. CudaArch and get a compile error if you don't handle one
of the enum values.

Reviewers: tra

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D21867

llvm-svn: 274681
2016-07-06 21:21:39 +00:00
Justin Lebar ef1aaac3cc [CUDA] Add support for CUDA 8 and sm_60-62.
Summary: Also add sm_32, which was missing.

Reviewers: tra

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D21778

llvm-svn: 274680
2016-07-06 21:21:14 +00:00
Justin Lebar 21e5d4fcfa [CUDA] Invoke ptxas and fatbinary during compilation.
Summary:
Previously we compiled CUDA device code to PTX assembly and embedded
that asm as text in our host binary.  Now we compile to PTX assembly and
then invoke ptxas to assemble the PTX into a cubin file.  We gather the
ptx and cubin files for each of our --cuda-gpu-archs and combine them
using fatbinary, and then embed that into the host binary.

Adds two new command-line flags, -Xcuda_ptxas and -Xcuda_fatbinary,
which pass args down to the external tools.

Reviewers: tra, echristo

Subscribers: cfe-commits, jhen

Differential Revision: http://reviews.llvm.org/D16082

llvm-svn: 257809
2016-01-14 21:41:27 +00:00
Justin Lebar 29bfa893cc [CUDA] Add explicit mapping from sm_XX to compute_YY.
Summary: This is used by D16082 when it invokes fatbinary.

Reviewers: tra

Subscribers: cfe-commits, jhen, echristo

Differential Revision: http://reviews.llvm.org/D16097

llvm-svn: 257530
2016-01-12 22:23:04 +00:00
Justin Lebar 7bf779859a [CUDA] Reject values for --cuda-gpu-arch that are not of the form /sm_\d+/.
Reviewers: tra

Subscribers: cfe-commits, jhen, echristo

Differential Revision: http://reviews.llvm.org/D16079

llvm-svn: 257413
2016-01-11 23:27:13 +00:00
Justin Lebar 41094615fb Move ownership of Action objects into Compilation.
Summary:
This makes constructing Action graphs which are DAGs much simpler.  It
also just simplifies in general the ownership semantics of Actions.

Depends on D15910.

Reviewers: echristo

Subscribers: klimek, cfe-commits

Differential Revision: http://reviews.llvm.org/D15911

llvm-svn: 257407
2016-01-11 23:07:27 +00:00
Artem Belevich 5e2a3ecd48 [CUDA] use -aux-triple to pass target triple of opposite side of compilation
Clang needs to know target triple for both sides of compilation so that
preprocessor macros and target builtins from both sides are available.

This change augments Compilation class to carry information about
toolchains used during different CUDA compilation passes and refactors
BuildActions to use it when it constructs CUDA jobs.

Removed DeviceTriple from CudaHostAction/CudaDeviceAction as it's no
longer needed.

Differential Revision: http://reviews.llvm.org/D13144

llvm-svn: 253385
2015-11-17 22:28:40 +00:00
Artem Belevich ccf0d699f0 Augmented CudaHostAction to carry device-side triple.
Differential Revision: http://reviews.llvm.org/D12893

llvm-svn: 248298
2015-09-22 17:23:13 +00:00
Artem Belevich db35a3ee43 [CUDA] Moved device-side triple calculation to buildCudaActions().
Differential Revision: http://reviews.llvm.org/D11310

llvm-svn: 242718
2015-07-20 21:59:31 +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
Justin Bogner a97ad16538 Driver: Delete dead code
VerifyJobActions never have multiple inputs.

llvm-svn: 242223
2015-07-14 22:36:22 +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
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
Bob Wilson 23a55f1eee Reapply "Change -save-temps to emit unoptimized bitcode files."
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
2014-12-21 07:00:00 +00:00
Reid Kleckner da0acc816c Revert "Change -save-temps to emit unoptimized bitcode files."
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
2014-12-18 23:07:04 +00:00
Bob Wilson f5ba8288ad Change -save-temps to emit unoptimized bitcode files.
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
2014-12-18 06:08:26 +00:00
David Blaikie 486f440cf1 unique_ptrify Driver Action handling
It hits a limit when we reach ActionList, which is used for dynamic
conditional ownership, so we lose type safety there.

This did expose at least one caller "lying" about ownership (passing
ownership to an Action, then updating the Action to specify that it
doesn't actually own the thing that was passed) - changing this to
unique_ptr just makes that oddity more obvious.

llvm-svn: 216713
2014-08-29 07:25:23 +00:00
Ben Langmuir 9b9a8d330c Move -verify-pch to use VerifyJobAction
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
2014-02-06 18:53:25 +00:00
Reid Kleckner 898229ab4b [Driver] Refactor clang driver to use LLVM's Option library
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
2013-06-14 17:17:23 +00:00
Eric Christopher 248357f624 Remove the SplitDebug action and replace with a set of commands
in the compilation setup. Note that this doesn't currently
work for -no-integrated-as.

llvm-svn: 175813
2013-02-21 22:35:01 +00:00
Eric Christopher 2ba5fcb759 Driver and option support for -gsplit-dwarf. This is a part of
the DWARF5 split dwarf proposal.

llvm-svn: 174349
2013-02-05 07:29:57 +00:00
Chandler Carruth 3a02247dc9 Sort all of Clang's files under 'lib', and fix up the broken headers
uncovered.

This required manually correcting all of the incorrect main-module
headers I could find, and running the new llvm/utils/sort_includes.py
script over the files.

I also manually added quite a few missing headers that were uncovered by
shuffling the order or moving headers up to be main-module-headers.

llvm-svn: 169237
2012-12-04 09:13:33 +00:00
Ted Kremenek f7639e1b4a Add new code migrator support for migrating existing Objective-C code to use
the new Objective-C NSArray/NSDictionary/NSNumber literal syntax.

This introduces a new library, libEdit, which provides a new way to support
migration of code that improves on the original ARC migrator.  We now believe
that most of its functionality can be refactored into the existing libraries,
and thus this new library may shortly disappear.

llvm-svn: 152141
2012-03-06 20:06:33 +00:00
David Blaikie 68e081d606 Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch
llvm-svn: 146959
2011-12-20 02:48:34 +00:00
David Blaikie aa347f9392 Removing a bunch of dead returns/breaks after llvm_unreachables.
llvm-svn: 140407
2011-09-23 20:26:49 +00:00