Summary:
`llvm::AttributeList` and `llvm::AttributeSet` are immutable, and so methods
defined on these classes, such as `addAttribute`, return a new immutable
object with the attribute added. In https://reviews.llvm.org/D55217 I attempted
to annotate methods such as `addAttribute` with `LLVM_NODISCARD`, since
calling these methods has no side-effects, and so ignoring the result
that is returned is almost certainly a programmer error.
However, committing the change resulted in new warnings in the AMDGPU target.
The AMDGPU simplify libcalls pass added in https://reviews.llvm.org/D36436
attempts to add the readonly and nounwind attributes to simplified
library functions, but instead calls the `addAttribute` methods and
ignores the result.
Modify the simplify libcalls pass to actually add the nounwind and
readonly attributes. Also update the simplify libcalls test to assert
that these attributes are actually being set.
Reviewers: rampitec, vpykhtin, rnk
Reviewed By: rampitec
Subscribers: arsenm, kzhuravl, jvesely, wdng, nhaehnle, yaxunl, dstuttard, tpr, t-tye, llvm-commits
Differential Revision: https://reviews.llvm.org/D55435
llvm-svn: 348732
This trait is used by several AST visitor classes to control whether the AST is visiting const nodes or non-const nodes. These uses cannot be easily replaced with the STL traits directly due to use of an unspecialized templated when a type is expected (due to the template template parameter involved).
llvm-svn: 348729
Someday we'd like to remove old autoupgrade code so it helps to annotate how long its been there so we don't have to go digging through commit history.
llvm-svn: 348728
Previously we had to take the carry in and add -1 to it to set the carry flag so we could use it with ADC/SBB. But if we know its 0 then we don't need to bother.
This should go a long way towards fixing PR24545.
llvm-svn: 348727
Summary: This patch permits OpenMP to build and work (with both gcc and clang) on OpenBSD. It mostly follows what was done for FreeBSD and NetBSD, except OpenBSD does not have pthread_getattr_np support, so it follows OS X in that one instance.
Reviewers: #openmp, krytarowski
Reviewed By: krytarowski
Subscribers: guansong, jfb, emaste, mgorny, krytarowski, #openmp
Tags: #openmp
Differential Revision: https://reviews.llvm.org/D34280
llvm-svn: 348726
Summary:
Additions mostly follow FreeBSD and NetBSD and are not intrusive.
There is similar patch for OpenBSD: https://reviews.llvm.org/D34280
The -lm was being omitted due to -Wl,--as-needed in cmake rule, similar patch is in freebsd-ports/devel/llvm-devel port.
Simple OpenMP programs compile and work as expected:
$ clang-devel ~/omp_hello.c -fopenmp -I/usr/local/llvm-devel/include
$ LD_LIBRARY_PATH=/usr/local/llvm-devel/lib OMP_NUM_THREADS=100 ./a.out
The assertion in LLVMgold.so when -fopenmp was used together with -flto in 20170524 snapshot is no longer triggered on current svn-trunk and works fine as in llvm-4.0 with our local patches.
Reviewers: #openmp, krytarowski
Reviewed By: krytarowski
Subscribers: dexonsmith, jfb, krytarowski, guansong, gregrodgers, emaste, mgorny, mehdi_amini
Differential Revision: https://reviews.llvm.org/D35129
llvm-svn: 348725
The dependency was added in r213995 in response to r213986 which did make
X86/Utils depend on IR, but r256680 later removed that dependency again.
llvm-svn: 348724
The existing code tries to handle an undef operand while transforming an add to an LEA,
but it's incomplete because we will crash on the i16 test with the debug output shown below.
It's better to just give up instead. Really, GlobalIsel should have folded these before we
could get into trouble.
# Machine code for function add_undef_i16: NoPHIs, TracksLiveness, Legalized, RegBankSelected, Selected
bb.0 (%ir-block.0):
liveins: $edi
%1:gr32 = COPY killed $edi
%0:gr16 = COPY %1.sub_16bit:gr32
%5:gr64_nosp = IMPLICIT_DEF
%5.sub_16bit:gr64_nosp = COPY %0:gr16
%6:gr64_nosp = IMPLICIT_DEF
%6.sub_16bit:gr64_nosp = COPY %2:gr16
%4:gr32 = LEA64_32r killed %5:gr64_nosp, 1, killed %6:gr64_nosp, 0, $noreg
%3:gr16 = COPY killed %4.sub_16bit:gr32
$ax = COPY killed %3:gr16
RET 0, implicit killed $ax
# End machine code for function add_undef_i16.
*** Bad machine code: Reading virtual register without a def ***
- function: add_undef_i16
- basic block: %bb.0 (0x7fe6cd83d940)
- instruction: %6.sub_16bit:gr64_nosp = COPY %2:gr16
- operand 1: %2:gr16
LLVM ERROR: Found 1 machine code errors.
Differential Revision: https://reviews.llvm.org/D54710
llvm-svn: 348722
Extension to rL348617, turns out llvm-exegesis doesn't need to match the perf counter name against a scheduler model resource name - so I've added a few more counters that I could find in the libpfm4 source code (and fix a typo in the knl/knm retired_uops counter - which uses 'all' instead of 'any').
llvm-svn: 348721
There is a clang::TemplateDecl AST type, so a method called
VisitTemplateDecl looks like it should 'override' the method from the
base visitor, but it does not because of the extra parameters it takes.
In reality, these methods are utilities, so name them like utilities.
llvm-svn: 348720
If the label is present, it is added as a child, with the statement a
child of the label. This preserves behavior of the InitListExpr dump
output.
llvm-svn: 348717
Summary:
This causes no change in the output of ast-dump-stmt.cpp due to the way
child nodes are printed with a delay.
Reviewers: aaron.ballman
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D55398
llvm-svn: 348714
The test file shows a case where the avoid store forwarding block
pass misses to copy a range (-1..1) when the load displacement
changes sign.
Baseline test for D55485.
llvm-svn: 348712
PE/COFF sections can have section names truncated to 8 chars, in order to
have the name available at runtime. (The string table, where long untruncated
names are stored, isn't loaded at runtime.)
This allows various llvm tools to dump the .eh_frame section from such
executables.
Patch by Peiyuan Song!
Differential Revision: https://reviews.llvm.org/D55407
llvm-svn: 348708
This is effectively re-committing the changes from:
rL347917 (D54640)
rL348195 (D55126)
...which were effectively reverted here:
rL348604
...because the code had a bug that could induce infinite looping
or eventual out-of-memory compilation.
The bug was that this code did not guard against transforming
opaque constants. More details are in the post-commit mailing
list thread for r347917. A reduced test for that is included
in the x86 bool-math.ll file. (I wasn't able to reduce a PPC
backend test for this, but it was almost the same pattern.)
Original commit message for r347917:
The motivating case for this is shown in:
https://bugs.llvm.org/show_bug.cgi?id=32023
and the corresponding rot16.ll regression tests.
Because x86 scalar shift amounts are i8 values, we can end up with trunc-binop-trunc
sequences that don't get folded in IR.
As the TODO comments suggest, there will be regressions if we extend this (for x86,
we mostly seem to be missing LEA opportunities, but there are likely vector folds
missing too). I think those should be considered existing bugs because this is the
same transform that we do as an IR canonicalization in instcombine. We just need
more tests to make those visible independent of this patch.
llvm-svn: 348706
Summary:
WasmSignature used to use its `WasmSignature` member variable only for
function types, but now it also can be used for events as well.
Reviewers: sbc100
Subscribers: dschuff, jgravelle-google, sunfish, llvm-commits
Differential Revision: https://reviews.llvm.org/D55247
llvm-svn: 348702
Summary:
This anoymous function actually has same logic with `Obj->toMappedAddr`.
Besides, I have a question on resolving illegal value. `gnu-readelf`, `gnu-objdump` and `llvm-objdump` could parse the test file 'test/tools/llvm-objdump/Inputs/private-headers-x86_64.elf', but `llvm-readobj` will fail when parse `DT_RELR` segment. Because, the value is 0x87654321 which is illegal. So, shall we do this clean up rather then remove the checking statements inside anoymous function?
```
if (Delta >= Phdr.p_filesz)
return createError("Virtual address is not in any segment");
```
Reviewers: rupprecht, jhenderson
Reviewed By: jhenderson
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D55329
llvm-svn: 348701
It is faster to directly call the ObjC runtime for methods such as alloc/allocWithZone instead of sending a message to those functions.
This patch adds support for converting messages to alloc/allocWithZone to their equivalent runtime calls.
Tests included for the positive case of applying this transformation, negative tests that we ensure we only convert "alloc" to objc_alloc, not "alloc2", and also a driver test to ensure we enable this only for supported runtime versions.
Reviewed By: rjmccall
https://reviews.llvm.org/D55349
llvm-svn: 348687
Move enums from */*Diagnostic.h to Basic/Diagnostic*.h. Basic/AllDiagnostics.h
needs all the enums and moving the sources to Basic prevents a Basic->*->Basic
dependency loop. This also allows each Basic/Diagnostics*Kinds.td to have a
header at Basic/Diagnostic*.h (except for Common). The old headers are kept in place since other packages are still using them.
llvm-svn: 348685
Escaping to void * / uint64_t / others non-OSObject * should stop tracking,
as such functions can have heterogeneous semantics depending on context,
and can not always be annotated.
rdar://46439133
Differential Revision: https://reviews.llvm.org/D55465
llvm-svn: 348675
These nodes should have two results. A real VT and a Glue. But this code would have returned Undef which would only be a single result. But we're in the single result version of getNode so these opcodes should never be seen by this function anyway.
llvm-svn: 348670
- For the moment a subset of this api dealing with file descriptors permissions and ioctls.
Reviewers: vitalybuka, krytarowski
Reviewed By: vitalybuka
Differential Revision: https://reviews.llvm.org/D55368
llvm-svn: 348668
Brian Gesiak