Deletion of dead blocks in arbitrary order may lead to failure
of assertion in `DeleteDeadBlock` that requires that we have
deleted all predecessors before we can delete the current block.
We should instead delete them in RPO order.
llvm-svn: 350116
If we are changing the MI operand from Reg to Imm, we need also handle its implicit use if have.
Differential Revision: https://reviews.llvm.org/D56078
llvm-svn: 350115
For atomic value operand which less than 4 bytes need to be masked.
And the related operation to calculate the newvalue can be done in 32 bit gprc.
So just use gprc for mask and value calculation.
Differential Revision: https://reviews.llvm.org/D56077
llvm-svn: 350113
Revert r350104 "[asan] Fix build on windows."
Revert r350101 "[asan] Support running without /proc."
These changes break Mac build, too.
llvm-svn: 350112
Summary:
This will make migrating code easier and generally seems like a good collection
of API improvements.
Some of these APIs seem like more consistent / better naming of existing
ones. I've retained the old names for migration simplicit and am just
adding the new ones in this commit. I'll try to garbage collect these
once CallSite is gone.
Subscribers: sanjoy, mcrosier, hiraditya, llvm-commits
Differential Revision: https://reviews.llvm.org/D55638
llvm-svn: 350109
With this, check-clang runs and passes all of clang's lit tests. It doesn't run
any of its unit tests yet.
Like with check-lld, running just ninja -C out/gn will build all prerequisites
needed to run tests, but it won't run the tests (so that the build becomes
clean after one build). Running ninja -C out/gn check-clang will build
prerequisites if needed and run the tests. The check-clang target never becomes
clean and runs tests every time.
Differential Revision: https://reviews.llvm.org/D56095
llvm-svn: 350108
Add SIOCSETHERCAP.
Add commented out NVMM (NetBSD Virtual Machine Monitor) operations
as this interface is still WIP and a subject to change.
llvm-svn: 350107
Summary:
If a DSO appears more than once with and without --as-needed, ld.bfd and gold consider --no-as-needed to takes precedence over --as-needed. lld didn't and this patch makes it do so.
This makes it a bit away from the position-dependent behavior (how
different occurrences of the same DSO interact) and protects us from
some mysterious runtime errors: if some interceptor libraries add their
own --no-as-needed dependencies (e.g. librt.so), and the user
application specifies -Wl,--as-needed -lrt , the absence of the
DT_NEEDED entry would make dlsym(RTLD_NEXT, "clock_gettime") return NULL
and would break at runtime.
Reviewers: ruiu, espindola
Reviewed By: ruiu
Subscribers: emaste, arichardson, llvm-commits
Differential Revision: https://reviews.llvm.org/D56089
llvm-svn: 350105
Summary: They happen to work out of the box.
Reviewers: rtrieu, vitalybuka
Subscribers: kubamracek, fedor.sergeev, krytarowski, llvm-commits
Differential Revision: https://reviews.llvm.org/D56088
llvm-svn: 350103
Summary:
Thread Static Data cannot be used in early init on NetBSD
and FreeBSD. Reuse the MSan TSD API for compatibility with
existing code with an alternative implementation using Thread
Local Storage.
New version uses Thread Local Storage to store a pointer
with thread specific data. The destructor from TSD has been
replaced with a TLS destrucutor that is called upon thread
exit.
Reviewers: joerg, vitalybuka, jfb
Reviewed By: vitalybuka
Subscribers: emaste, jfb, llvm-commits, #sanitizers, mgorny
Tags: #sanitizers
Differential Revision: https://reviews.llvm.org/D55703
llvm-svn: 350102
Summary:
This patch lets ASan run when /proc is not accessible (ex. not mounted
yet). It includes a special test-only flag that emulates this condition
in an unpriviledged process.
This only matters on Linux, where /proc is necessary to enumerate
virtual memory mappings.
Reviewers: pcc, vitalybuka
Subscribers: kubamracek, llvm-commits
Differential Revision: https://reviews.llvm.org/D55874
llvm-svn: 350101
Summary: Assigning an array of bools to {false, false, false} can, in certain build configurations, lead to a memset call. Use internal_memset to avoid this.
Reviewers: eugenis
Subscribers: kubamracek, delcypher, llvm-commits, #sanitizers
Differential Revision: https://reviews.llvm.org/D56107
llvm-svn: 350098
Summary:
By an accident part of the tests contained hardcoded checksums
for external files that will differ between setups.
Reviewers: mgorny
Subscribers: kubamracek, llvm-commits, #sanitizers
Tags: #sanitizers
Differential Revision: https://reviews.llvm.org/D56104
llvm-svn: 350097
Summary:
By an accident part of the tests contained hardcoded checksums
for external files that will differ between setups.
Reviewers: mgorny
Subscribers: kubamracek, llvm-commits, #sanitizers
Tags: #sanitizers
Differential Revision: https://reviews.llvm.org/D56105
llvm-svn: 350096
Summary:
By an accident part of the tests contained hardcoded checksums
for external files that will differ between setups.
Reviewers: mgorny
Subscribers: kubamracek, llvm-commits, #sanitizers
Tags: #sanitizers
Differential Revision: https://reviews.llvm.org/D56106
llvm-svn: 350095
python 3.7 removes re._pattern_type. Fix the one place where we were
depending on the type of regular expressions to compute the type
dynamically.
llvm-svn: 350093
We were emitting the null class symbol in the wrong section, which meant
that programs that contained no Objective-C classes would fail to link.
llvm-svn: 350092
The assertion fired (with a debug visual studio STL) because we tried to
dereference the end of a vector (although it was only to take its
address again and form an end iterator). Rewrite this logic to avoid the
questionable code.
llvm-svn: 350091
Summary:
Simplify the code by using the contains implementation in IntervalMap.
There is a slight change of behavior here: We now treat an allocation of
size 0, as if it was size 1. This guarantees that the returned addresses
will be unique, whereas previously we would allow the allocation
function to return the same zero-sized region multiple times, as long as
it is not null, and not in the middle of an existing interval (but the
situation when we were placing an larger interval over a zero-sized one
was not detected).
I think this behavior makes more sense, as that is pretty much the same
guarantee as offered by malloc (except that is permitted to also return
nullptr).
Reviewers: vsk
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D55761
llvm-svn: 350087
Summary:
r346165 introduced a bug, where we would fail to parse the size of an
array if that size happened to match an existing die offset.
The logic was:
if (DWARFDIE count = die.GetReferencedDie(DW_AT_count))
num_elements = compute_vla_size(count);
else
num_elements = die.GetUsigned(DW_AT_count); // a fixed-size array
The problem with this logic was that GetReferencedDie did not take the
form class of the attribute into account, and would happily return a die
reference for any form, if its value happened to match some die.
As this behavior is inconsistent with how llvm's DWARFFormValue class
operates, I chose to fix the problem by making our version of this class
match the llvm behavior. For this to work, I had to add an explicit form
class check to the .apple_XXX tables parsing code, because they do
(incorrectly?) use data forms as die references.
Reviewers: aprantl, clayborg
Subscribers: JDevlieghere, lldb-commits
Differential Revision: https://reviews.llvm.org/D55991
llvm-svn: 350086
Create PMULDQ/PMULUDQ as long as the number of elements is a power of 2.
This seems to give some improvements in our ability to use SimplifyDemandedBits.
llvm-svn: 350084
Make each of the helper functions only return their comparison node and the condition code. Leave X86ISD::SETCC creation to the LowerSETCC function itself.
Looking into whether we can use this code directly in BRCOND and SELECT lowering instead of going through LowerSETCC which creates an X86ISD::SETCC node we need to look through.
llvm-svn: 350082
Only one of the 3 callers of LowerAndToBT need the SETCC node. Two of them have to look through it to find the operands they really need. Instead create it after the one call that needs it.
LowerAndToBT now returns both the BT node and the X86 specific condition code separately.
llvm-svn: 350081
Summary:
These instructions are currently unused in our backend, but for
completeness it is good to support them, so they can be used with
the assembler in hand-written code.
Tests are very basic, signature support missing much like other blocks.
Reviewers: dschuff, aheejin
Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits
Differential Revision: https://reviews.llvm.org/D55973
llvm-svn: 350079
Summary:
It does so using a simple nesting stack, and gives clear errors upon
violation. This is unique to wasm, since most CPUs do not have
any nested constructs.
Had to add an end of file check to the general assembler for this.
Note: if/else/end instructions are not currently supported in our
tablegen defs, so these tests will be enabled in a follow-up.
They already pass the nesting check.
Reviewers: dschuff, aheejin
Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits
Differential Revision: https://reviews.llvm.org/D55797
llvm-svn: 350078
Summary:
Existing LIR recognizes CTLZ where shifting input variable right until it is zero. (Shift-Until-Zero idiom)
This commit:
1. Augments Shift-Until-Zero idiom to recognize CTTZ where input variable is shifted left.
2. Prepare for BitScan idiom recognition.
Patch by Yuanfang Chen (tabloid.adroit)
Reviewers: craig.topper, evstupac
Reviewed By: craig.topper
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D55876
llvm-svn: 350074
Fixes crash reported after r347354 for frontends that don't always emit
'this' pointers for methods. Now we will silently produce debug info
that makes functions like this look like static methods, which seems
reasonable.
llvm-svn: 350073
midl invokes the compiler on .idl files with /E. Before this change, we
would treat unrecognized inputs as object files. Now we pre-process to
stdout as expected. I checked that MSVC defines __cplusplus when invoked
this way, so treating the input as C++ seems like the right thing to do.
After this change, I was able to run midl like this with clang-cl:
$ midl -cpp_cmd clang-cl.exe foo.idl
Things worked for the example IDL file in the Microsoft documentation,
but beyond that, I don't know if this will work well.
Fixes PR40140
llvm-svn: 350072
The patch adds a possibility to make library calls on NVPTX.
An important thing about library functions - they must be defined within
the current module. This basically should guarantee that we produce a
valid PTX assembly (without calls to not defined functions). The one who
wants to use the libcalls is probably will have to link against
compiler-rt or any other implementation.
Currently, it's completely impossible to make library calls because of
error LLVM ERROR: Cannot select: i32 = ExternalSymbol '...'. But we can
lower ExternalSymbol to TargetExternalSymbol and verify if the function
definition is available.
Also, there was an issue with a DAG during legalisation. When we expand
instruction into libcall, the inner call-chain isn't being "integrated"
into outer chain. Since the last "data-flow" (call retval load) node is
located in call-chain earlier than CALLSEQ_END node, the latter becomes
a leaf and therefore a dead node (and is being removed quite fast).
Proposed here solution relies on another data-flow pseudo nodes
(ProxyReg) which purpose is only to keep CALLSEQ_END at legalisation and
instruction selection phases - we remove the pseudo instructions before
register scheduling phase.
Patch by Denys Zariaiev!
Differential Revision: https://reviews.llvm.org/D34708
llvm-svn: 350069
Summary:
This moves it up from IgnoreParenImpCasts to IgnoreParens, so that more
helpers ignore it. For most clients, this ensures that these helpers
behave the same with and without C++17 enabled, which is what appears to
introduce these new expression nodes.
Fixes PR39881
Reviewers: void, rsmith
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D55853
llvm-svn: 350068
Not all %itanium_abi_triple values support TLS. Makes
OpenMP/declare_reduction_codegen.cpp, OpenMP/parallel_copyin_codegen.cpp for
%itanium_abi_triples without TLS support.
Alternatively we could pass -fnoopenmp-use-tls and tweak some of the CHECK
lines, but this seems a bit simpler.
Fixes PR40156.
Differential Revision: https://reviews.llvm.org/D56086
llvm-svn: 350067
Max Kazantsev