Summary:
The WebAssembly backend lowers fptoint instructions to a code sequence
that checks for overflow to avoid traps because fptoint is supposed to
be speculatable. These new builtins and intrinsics give users a way to
depend on the trapping semantics of the underlying instructions and
avoid the extra code generated normally.
Patch by coffee and tlively.
Reviewers: aheejin
Subscribers: dschuff, sbc100, jgravelle-google, hiraditya, sunfish, cfe-commits, llvm-commits
Tags: #clang, #llvm
Differential Revision: https://reviews.llvm.org/D68902
llvm-svn: 374856
By default `platform process list` only shows the processes of the current user that lldb-server can parse.
There are several problems:
- apk programs don't have an executable file. They instead use a package name as identifier. We should show them instead.
- each apk also runs under a different user. That's how android works
- because of the user permission, some files like /proc/<pid>/{environ,exe} can't be read.
This results in a very small process list.
This is a local run on my machine
```
(lldb) platform process list
2 matching processes were found on "remote-android"
PID PARENT USER TRIPLE NAME
====== ====== ========== ======================== ============================
23291 3177 aarch64-unknown-linux-android sh
23301 23291 aarch64-unknown-linux-android lldb-server
```
However, I have 700 processes running at this time.
By implementing a few fallbacks for android, I've expanded this list to 202, filtering out kernel processes, which would presumably appear in this list if the device was rooted.
```
(lldb) platform process list
202 matching processes were found on "remote-android"
PID PARENT USER TRIPLE NAME
====== ====== ========== ======================== ============================
...
12647 3208 aarch64-unknown-linux-android sh
12649 12647 aarch64-unknown-linux-android lldb-server
12653 982 com.samsung.faceservice
13185 982 com.samsung.vvm
15899 982 com.samsung.android.spay
16220 982 com.sec.spp.push
17126 982 com.sec.spp.push:RemoteDlcProcess
19772 983 com.android.chrome
20209 982 com.samsung.cmh:CMH
20380 982 com.google.android.inputmethod.latin
20879 982 com.samsung.android.oneconnect:Receiver
21212 983 com.tencent.mm
24459 1 aarch64-unknown-linux-android wpa_supplicant
25974 982 com.samsung.android.contacts
26293 982 com.samsung.android.messaging
28714 982 com.samsung.android.dialer
31605 982 com.samsung.android.MtpApplication
32256 982 com.bezobidny
```
Something to notice is that the architecture is unkonwn for all apks. And that's fine, because run-as would be required to gather this information and that would make this entire functionality massively slow.
There are still several improvements to make here, like displaying actual user names, which I'll try to do in a following diff.
Note: Regarding overall apk debugging support from lldb. I'm planning on having lldb spawn lldb-server by itself with the correct user, so that everything works well. The initial lldb-server used for connecting to the remote platform can be reused for such purpose. Furthermore, eventually lldb could also launch that initial lldb-server on its own.
Differential Revision: D68289
llvm-svn: 374853
We need to encode bit 4 into the EVEX.V' bit. We do this right
for regular gather/scatter which use either MRMSrcMem or MRMDestMem
formats. The prefetches use MRM*m formats.
Fixes an issue recently added to PR36202.
llvm-svn: 374849
Summary:
When files often get touched during builds, the mtime based validation
leads to different problems in implicit modules builds, even when the
content doesn't actually change:
- Modules only: module invalidation due to out of date files. Usually causing rebuild traffic.
- Modules + PCH: build failures because clang cannot rebuild a module if it comes from building a PCH.
- PCH: build failures because clang cannot rebuild a PCH in case one of the input headers has different mtime.
This patch proposes hashing the content of input files (headers and
module maps), which is performed during serialization time. When looking
at input files for validation, clang only computes the hash in case
there's a mtime mismatch.
I've tested a couple of different hash algorithms availble in LLVM in
face of building modules+pch for `#import <Cocoa/Cocoa.h>`:
- `hash_code`: performace diff within the noise, total module cache increased by 0.07%.
- `SHA1`: 5% slowdown. Haven't done real size measurements, but it'd be BLOCK_ID+20 bytes per input file, instead of BLOCK_ID+8 bytes from `hash_code`.
- `MD5`: 3% slowdown. Like above, but BLOCK_ID+16 bytes per input file.
Given the numbers above, the patch uses `hash_code`. The patch also
improves invalidation error msgs to point out which type of problem the
user is facing: "mtime", "size" or "content".
rdar://problem/29320105
Reviewers: dexonsmith, arphaman, rsmith, aprantl
Subscribers: jkorous, cfe-commits, ributzka
Tags: #clang
Differential Revision: https://reviews.llvm.org/D67249
llvm-svn: 374841
we will unroll loops. Also comment a few occasions where we need to
know whether or not we're forcing the unwinder or not.
The default before and after this patch is for LoopUnroll to be enabled,
and for it to use a cost model to determine whether to unroll the loop
(`OnlyWhenForced = false`). Before this patch, disabling loop unroll
would not run the LoopUnroll pass. After this patch, the LoopUnroll pass
is being run, but it restricts unrolling to only the loops marked by a
pragma (`OnlyWhenForced = true`).
In addition, this patch disables the UnrollAndJam pass when disabling unrolling.
Testcase is in clang because it's controlling how the loop optimizer
is being set up and there's no other way to trigger the behavior.
llvm-svn: 374838
The version mismatch symbol is version 9 on 32 bit android. Since
this test isn't actually testing any android specific functionality,
we force the target triple to x86_64-unknown-unknown in order to have
a consistent version number. It seems the test was already trying to
do this, just not doing it right
Patch by Christopher Tetrault
Differential Revision: https://reviews.llvm.org/D68882
llvm-svn: 374836
Summary:
Currently clang does not support -Wa,-W, which suppresses warning
messages in GNU assembler. Add this option for gcc compatibility.
https://bugs.llvm.org/show_bug.cgi?id=43651. Reland with differential
information.
Reviewers: bcain
Reviewed By: bcain
Subscribers: george.burgess.iv, gbiv, llozano, manojgupta, nickdesaulniers, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D68884
llvm-svn: 374834
Summary:
Integrated assembler does not accept offset expressions surrounded by
parenthesis. Handle this case for GAS compability.
https://bugs.llvm.org/show_bug.cgi?id=43631
Subscribers: kristof.beyls, hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D68764
llvm-svn: 374832
Introduced in r374582, Michael Spencer pointed out this broke the
modules build due to a missing tblgen dependency on
llvm/IR/Attributes.inc.
Michael fixed the dependency in r374827.
So this removes the inclusion and the new dependency (effectively
reverting r374827 and including the alternative fix of removing rather
than supporting the new dependency).
Thanks for the quick fix/notice, Michael!
llvm-svn: 374831
previously we would generate literal check lines w/ no reg-exps for
vregs as MI flags (nsw, ninf, etc.) won't be recognized as a part of MI.
Fixing that. Includes updating the MIR tests that suffered from the
problem.
Reviewed By: bogner
Differential Revision: https://reviews.llvm.org/D68905
llvm-svn: 374829
For a constant shift amount, add the following fold.
shl (zext (i1 X)), ShAmt --> select (X, 1 << ShAmt, 0)
https://rise4fun.com/Alive/IZ9
Fixes PR42257.
Based on original patch by @zvi (Zvi Rackover)
Differential Revision: https://reviews.llvm.org/D63382
llvm-svn: 374828
A previous commit made libLLVMDebugInfoDWARF depend on the LLVM_Bitcode module which depends on the LLVM_intrinsic_gen module which depends on "llvm/IR/Attributes.inc" which is a generated header not depended on by libLLVMDebugInfo. Add that dependency.
llvm-svn: 374827
Summary:
We don't know what context to use until the classification result is
consumed by the parser, which could happen in a different semantic
context. So don't build the expression that results from name
classification until we get to that point and can handle it properly.
This covers everything except C++ implicit class member access, which
is a little awkward to handle properly in the face of the protected
member access check. But it at least fixes all the currently-filed
instances of PR43080.
Reviewers: efriedma
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D68896
llvm-svn: 374826
oops! I cherry-picked rL374820 thinking it was completely
independent of D68737, but it wasn't. It makes an incidental
use of SBFile::GetFile, which is introduced there, so I broke the
build.
The docs say you can commit without review for "obvious". I think
this qualifies. If this kind of fix isn't considered obvious, let
me know and I'll revert instead.
Fixes: rL374820
llvm-svn: 374825
Currently clang does not support -Wa,-W, which suppresses warning
messages in GNU assembler. Add this option for gcc compatibility.
https://bugs.llvm.org/show_bug.cgi?id=43651
llvm-svn: 374822
Summary:
This patch replaces the FILE* python bindings for SBInstruction and
SBInstructionList and replaces them with the new, safe SBFile and FileSP
bindings.
I also re-enable `Test_Disassemble_VST1_64`, because now we can use
the file bindings as an additional test of the disassembler, and we
can use the disassembler test as a test of the file bindings.
The bugs referred to in the comments appear to have been fixed. The
radar is closed now and the bugzilla bug does not reproduce with the
instructions given.
Reviewers: JDevlieghere, jasonmolenda, labath
Reviewed By: labath
Subscribers: lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D68890
llvm-svn: 374820
The expression of the num_tasks clause must be captured in the combined
task-based directives, like 'parallel master taskloop' directive.
llvm-svn: 374819
Summary:
This patch re-types everywhere that passes a File::OpenOptions
as a uint32_t so it actually uses File::OpenOptions.
It also converts some OpenOptions related functions that fail
by returning 0 or NULL into llvm::Expected
split off from https://reviews.llvm.org/D68737
Reviewers: JDevlieghere, jasonmolenda, labath
Reviewed By: labath
Subscribers: lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D68853
llvm-svn: 374817
Summary:
This patch adds FileSP and SBFile versions of the API methods
ReportEventState and HandleProcessEvent. It points the SWIG
wrappers at these instead of the ones that use FILE* streams.
Reviewers: JDevlieghere, jasonmolenda, labath, jingham
Reviewed By: labath
Subscribers: lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D68546
llvm-svn: 374816
The goal is to have 100% fidelity in clang-scan-deps behavior when
--analyze is present in compilation command.
At the same time I don't want to break clang-tidy which expects
__static_analyzer__ macro defined as built-in.
I introduce new cc1 options (-setup-static-analyzer) that controls
the macro definition and is conditionally set in driver.
Differential Revision: https://reviews.llvm.org/D68093
llvm-svn: 374815
When using lit's internal shell, RUN lines like the following
accidentally execute an external `diff` instead of lit's internal
`diff`:
```
# RUN: program | diff -U1 file -
```
Such cases exist now, in `clang/test/Analysis` for example. We are
preparing patches to ensure lit's internal `diff` is called in such
cases, which will then fail because lit's internal `diff` doesn't
recognize `-U` as a command-line option. This patch adds `-U`
support.
Reviewed By: rnk
Differential Revision: https://reviews.llvm.org/D68668
llvm-svn: 374814
Credit goes to Evgeny Brevnov for figuring out the problematic case.
Fuzzing probably also found it (lots of failures), but due to some silly infrastructure problems I hadn't gotten to the results before Evgeny hand reduced it from a benchmark.
llvm-svn: 374812
As reported by Joerg Sonnenberger in IRC, for 32-bit systems,
where pointer and size_t are 32-bit, if you use 64-bit-wide variable
in the loop, you could end up with loop exit count being of the type
wider than the size_t. Now, i'm not sure if we can produce `bcmp`
from that (just truncate?), but we certainly should not assert/miscompile.
llvm-svn: 374811
The expression of the grainsize clause must be captured in the combined
task-based directives, like 'parallel master taskloop' directive.
llvm-svn: 374810
Summary:
The build directory name is based on the test method name, so having
two test methods with the same name in the same test file is a
problem, even if they're in different test classes.
On linux and darwin this conflict can go unnoticed, but windows
has different filesystem semantics and it will fail when one
process tries to delete files still held open by another.
The problem is fixed just by changing the name of one of the test
methods.
Reviewers: JDevlieghere, jasonmolenda, labath, stella.stamenova
Reviewed By: stella.stamenova
Subscribers: lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D68951
llvm-svn: 374803
Summary:
The guard for printing function flags in the summary was not checking
the NoInline flag.
Reviewers: wmi
Subscribers: mehdi_amini, inglorion, hiraditya, steven_wu, dexonsmith, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D68948
llvm-svn: 374802
Microsoft's ABI mangles names differently than Itanium and this breaks the LLVM
yaml parser unless the name is escaped in quotes. Quotes are being added to the
mangled names of the IFS file generation so that llvm-ifs doesn't break when
Windows triples are passed to the driver.
Differential Revision: https://reviews.llvm.org/D68915
llvm-svn: 374798
Thomas Lively