Michal Gorny [Sun, 2 Dec 2018 16:49:23 +0000 (16:49 +0000)]
[test] Fix BugPoint/compile-custom.ll to use detected python exec
Spawn the custom compile command in BugPoint/compile-custom.ll via
%python rather than relying on implicit 'env python' shebang, in order
to fix it on systems that don't have 'python' executable such as NetBSD.
Differential Revision: https://reviews.llvm.org/D55161
llvm-svn: 348095
Stephen Kelly [Sun, 2 Dec 2018 16:42:34 +0000 (16:42 +0000)]
Fix whitespace
llvm-svn: 348094
Stephen Kelly [Sun, 2 Dec 2018 16:36:23 +0000 (16:36 +0000)]
Add dump tests for ArrayInitLoopExpr and ArrayInitIndexExpr
llvm-svn: 348093
Nikita Popov [Sun, 2 Dec 2018 14:14:11 +0000 (14:14 +0000)]
[ValueTracking] Support funnel shifts in computeKnownBits()
If the shift amount is known, we can determine the known bits of the
output based on the known bits of two inputs.
This is essentially the same functionality as implemented in D54869,
but for ValueTracking rather than InstCombine SimplifyDemandedBits.
Differential Revision: https://reviews.llvm.org/D55140
llvm-svn: 348091
Sanjay Patel [Sun, 2 Dec 2018 13:48:42 +0000 (13:48 +0000)]
[SelectionDAG] fold constant with undef vector per element
This makes the SDAG behavior consistent with the way we do this in IR.
It's possible that we were getting the wrong answer before. For example,
'xor undef, undef --> 0' but 'xor undef, C' --> undef.
But the most practical improvement is likely as shown in the tests here -
for FP, we were overconstraining undef lanes to NaN, and that can prevent
vector simplifications/narrowing (see D51553).
llvm-svn: 348090
Sanjay Patel [Sun, 2 Dec 2018 13:33:56 +0000 (13:33 +0000)]
[DAGCombiner] guard against an oversized shift crash
This change prevents the crash noted in the post-commit comments
for rL347478 :
http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-
20181119/605166.html
We can't guarantee that an oversized shift amount is folded away,
so we have to check for it.
Note that I committed an incomplete fix for that crash with:
rL347502
But as discussed here:
http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-
20181126/605679.html
...we have to try harder.
So I'm not sure how to expose the bug now (and apparently no fuzzers have found
a way yet either).
On the plus side, we have discovered that we're missing real optimizations by
not simplifying nodes sooner, so the earlier fix still has value, and there's
likely more value in extending that so we can simplify more opcodes and simplify
when doing RAUW and/or putting nodes on the combiner worklist.
Differential Revision: https://reviews.llvm.org/D54954
llvm-svn: 348089
Sanjay Patel [Sun, 2 Dec 2018 13:26:03 +0000 (13:26 +0000)]
[ValueTracking] add helper function for testing implied condition; NFCI
We were duplicating code around the existing isImpliedCondition() that
checks for a predecessor block/dominating condition, so make that a
wrapper call.
llvm-svn: 348088
Craig Topper [Sun, 2 Dec 2018 07:52:39 +0000 (07:52 +0000)]
[X86] Simplify LowerBITCAST code for v2i32/v4i16/v8i8/i64->mmx/i64/f64 bitcast.
Previously this code generated its own extracts and build_vector. But we can use a simpler concat_vectors or scalar_to_vector operation and let type legalization do additional legalization of those operations.
llvm-svn: 348087
Craig Topper [Sun, 2 Dec 2018 05:46:50 +0000 (05:46 +0000)]
[X86] Add custom type legalization for v2i32/v4i16/v8i8->mmx bitcasts to avoid a store/load to/from the stack.
Widen the input to a 128 bit vector by padding with undef elements. Then use a movdq2q to convert from xmm register to mmx register.
llvm-svn: 348086
Craig Topper [Sun, 2 Dec 2018 05:46:48 +0000 (05:46 +0000)]
[X86] Custom type legalize v2i32/v4i16/v8i8->i64 bitcasts in 64-bit mode similar to what's done when the destination is f64.
The generic legalizer will fall back to a stack spill that uses a truncating store. That store will get expanded into a shuffle and non-truncating store on pre-avx512 targets. Once that happens the stack store/load pair will be combined away leaving behind the shuffle and bitcasts. On avx512 targets the truncating store is legal so doesn't get folded away.
By custom legalizing it we can avoid this churn and maybe produce better code.
llvm-svn: 348085
Matt Arsenault [Sat, 1 Dec 2018 22:16:27 +0000 (22:16 +0000)]
OpenCL: Improve vector printf warnings
The vector modifier is considered separate, so
don't treat it as a conversion specifier.
This is still not warning on some cases, like
using a type that isn't a valid vector element.
Fixes bug 39652
llvm-svn: 348084
Matt Arsenault [Sat, 1 Dec 2018 21:56:10 +0000 (21:56 +0000)]
OpenCL: Extend argument promotion rules to vector types
The spec is ambiguous on whether vector types are allowed to be
implicitly converted. The only legal context I think this can
be used for OpenCL is printf, where it seems necessary.
llvm-svn: 348083
Craig Topper [Sat, 1 Dec 2018 21:53:08 +0000 (21:53 +0000)]
[X86] Add vXi8 division/remainder by non-splat constant test cases to prepare for an upcoming patch.
llvm-svn: 348082
Jessica Paquette [Sat, 1 Dec 2018 21:24:06 +0000 (21:24 +0000)]
[MachineOutliner][AArch64] Improve checks for stack instructions
If we know that we'll definitely save LR to a register, there's no reason to
pre-check whether or not a stack instruction is unsafe to fix up.
This makes it so that we check for that condition before mapping instructions.
This allows us to outline more, since we don't pessimise as many instructions.
Also update some tests, since we outline more.
llvm-svn: 348081
Jessica Paquette [Sat, 1 Dec 2018 21:23:58 +0000 (21:23 +0000)]
Replace w16/w17 in machine-outliner.mir with w11/w12
These registers should not be used here, since they are interprocedural
scratch registers in AArch64.
llvm-svn: 348080
Craig Topper [Sat, 1 Dec 2018 19:26:31 +0000 (19:26 +0000)]
[X86] Don't use zero_extend_vector_inreg for mulhu lowering with sse 4.1
Summary: With sse4.1 we use two zero_extend_vector_inreg and a pshufd to expand the v16i8 input into two v8i16 vectors for the multiply. That's 3 shuffles to extend one operand. The other operand is usually constant as this is mostly used by division by constant optimization. Pre sse4.1 we use a punpckhbw and a punpcklbw with a zero vector. That's two shuffles and an xor and a copy due to tied register constraints. That seems maybe better than the 3 shuffles. With AVX we avoid the copy so that's obviously better.
Reviewers: spatel, RKSimon
Reviewed By: RKSimon
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D55138
llvm-svn: 348079
Dan Liew [Sat, 1 Dec 2018 15:45:42 +0000 (15:45 +0000)]
Introduce a way to allow the ASan dylib on Darwin platforms to be loaded via `dlopen()`.
Summary:
The purpose of this option is provide a way for the ASan dylib
to be loaded via `dlopen()` without triggering most initialization
steps (e.g. shadow memory set up) that normally occur when the
ASan dylib is loaded.
This new functionality is exposed by
- A `SANITIZER_SUPPORTS_INIT_FOR_DLOPEN` macro which indicates if the
feature is supported. This only true for Darwin currently.
- A `HandleDlopenInit()` function which should return true if the library
is being loaded via `dlopen()` and
`SANITIZER_SUPPORTS_INIT_FOR_DLOPEN` is supported. Platforms that
support this may perform any initialization they wish inside this
function.
Although disabling initialization is something that could potentially
apply to other sanitizers it appears to be unnecessary for other
sanitizers so this patch only makes the change for ASan.
rdar://problem/
45284065
Reviewers: kubamracek, george.karpenkov, kcc, eugenis, krytarowski
Subscribers: #sanitizers, llvm-commits
Differential Revision: https://reviews.llvm.org/D54469
llvm-svn: 348078
Simon Pilgrim [Sat, 1 Dec 2018 14:18:31 +0000 (14:18 +0000)]
[TTI] Reduction costs only need to include a single extract element cost (REAPPLIED)
We were adding the entire scalarization extraction cost for reductions, which returns the total cost of extracting every element of a vector type.
For reductions we don't need to do this - we just need to extract the 0'th element after the reduction pattern has completed.
Fixes PR37731
Rebased and reapplied after being reverted in rL347541 due to PR39774 - which was fixed by D54955/rL347759 and D55017/rL347997
Differential Revision: https://reviews.llvm.org/D54585
llvm-svn: 348076
Graham Sellers [Sat, 1 Dec 2018 12:27:53 +0000 (12:27 +0000)]
[AMDGPU] Split 64-Bit XNOR to 64-Bit NOT/XOR
The identity ~(x ^ y) == (~x ^ y) == (x ^ ~y) allows XNOR (XOR/NOT) to turn into NOT/XOR. Handling this case with its own split means we can make the NOT remain in the scalar unit. Previously, we split 64-bit XNOR into two 32-bit XNOR, then lowered. Now, we get three instructions (s_not, v_xor, v_xor) rather than four in the case where either of the sources is a scalar 64-bit.
Add test cases to xnor.ll to attempt XNOR Vx, Sy and XNOR Sx, Vy. Also adding test that uses the opposite identity such that (~x ^ y) on the scalar unit (or vector for gfx906) can generate XNOR. This already worked, but I didn't see a test for it.
Differential: https://reviews.llvm.org/D55071
llvm-svn: 348075
Xing GUO [Sat, 1 Dec 2018 12:27:24 +0000 (12:27 +0000)]
[llvm-readobj] Improve dynamic section iteration NFC.
llvm-svn: 348074
Simon Pilgrim [Sat, 1 Dec 2018 12:08:55 +0000 (12:08 +0000)]
[SelectionDAG] Improve SimplifyDemandedBits to SimplifyDemandedVectorElts simplification
D52935 introduced the ability for SimplifyDemandedBits to call SimplifyDemandedVectorElts through BITCASTs if the demanded bit mask entirely covered the sub element.
This patch relaxes this to demanding an element if we need any bit from it.
Differential Revision: https://reviews.llvm.org/D54761
llvm-svn: 348073
Nikita Popov [Sat, 1 Dec 2018 10:58:34 +0000 (10:58 +0000)]
[InstCombine] Support ssub.sat canonicalization for non-splats
Extend ssub.sat(X, C) -> sadd.sat(X, -C) canonicalization to also
support non-splat vector constants. This is done by generalizing
the implementation of the isNotMinSignedValue() helper to return
true for constants that are non-splat, but don't contain any
signed min elements.
Differential Revision: https://reviews.llvm.org/D55011
llvm-svn: 348072
Bill Wendling [Sat, 1 Dec 2018 09:06:26 +0000 (09:06 +0000)]
Correct indentation.
llvm-svn: 348071
Bill Wendling [Sat, 1 Dec 2018 08:29:36 +0000 (08:29 +0000)]
Specify constant context in constant emitter
The constant emitter may need to evaluate the expression in a constant context.
For exasmple, global initializer lists.
llvm-svn: 348070
Craig Topper [Sat, 1 Dec 2018 07:45:36 +0000 (07:45 +0000)]
[X86] Remove stale FIXME from test case. NFC
This was fixed in r346581. I just forgot to remove it.
llvm-svn: 348069
Teresa Johnson [Sat, 1 Dec 2018 05:11:46 +0000 (05:11 +0000)]
[ThinLTO] Allow importing of functions with var args
Summary:
Follow up to D54270, which allowed importing of var args functions
unless they called va_start. As pointed out in the post-commit comments
on that patch, the inliner can handle functions that call va_start in
certain situations as well. Go ahead and enable importing of all var
args functions. Measurements on a large binary show that this increases
imports and binary size by an insignificant amount.
Reviewers: davidxl
Subscribers: mehdi_amini, inglorion, eraman, steven_wu, dexonsmith, llvm-commits
Differential Revision: https://reviews.llvm.org/D54607
llvm-svn: 348068
Alex Bradbury [Sat, 1 Dec 2018 05:00:00 +0000 (05:00 +0000)]
[RISCV] Remove RV64I SLLW/SRLW/SRAW patterns and add new test cases
As noted by Eli Friedman <https://reviews.llvm.org/D52977?id=168629#1315291>,
the RV64I shift patterns for SLLW/SRLW/SRAW make some incorrect assumptions.
SRAW assumed that (sext_inreg foo, i32) could only be produced when
sign-extended an i32. However, it can be produced by input such as:
define i64 @tricky_ashr(i64 %a, i64 %b) {
%1 = shl i64 %a, 32
%2 = ashr i64 %1, 32
%3 = ashr i64 %2, %b
ret i64 %3
}
It's important not to select sraw in the above case, because sraw only uses
bits lower 5 bits from the shift, while a shift of 32-63 would be valid.
Similarly, the patterns for srlw assumed (and foo, 0xffffffff) would only be
produced when zero-extending a value that was originally i32 in LLVM IR. This
is obviously incorrect.
This patch removes the SLLW/SRLW/SRAW shift patterns for the time being and
adds test cases that would demonstrate a miscompile if the incorrect patterns
were re-added.
llvm-svn: 348067
Fangrui Song [Sat, 1 Dec 2018 01:57:15 +0000 (01:57 +0000)]
[clangd] Recommit the "AnyScope" changes in requests.json by rCTE347753 (reverted by rCTE347792)
This fixes IndexBenchmark tests.
llvm-svn: 348066
Fangrui Song [Sat, 1 Dec 2018 01:43:05 +0000 (01:43 +0000)]
[Basic] Move DiagnosticsEngine::dump from .h to .cpp
The two LLVM_DUMP_METHOD methods have a undefined reference on clang::DiagnosticsEngine::DiagStateMap::dump.
tools/clang/tools/extra/clangd/benchmarks/IndexBenchmark links in
clangDaemon but does not link in clangBasic explicitly, which causes a
linker error "undefined symbol" in !NDEBUG + -DBUILD_SHARED_LIBS=on builds.
Move LLVM_DUMP_METHOD methods to .cpp to fix IndexBenchmark. They should
be unconditionally defined as they are also used by non-dump-method #pragma clang __debug diag_mapping
llvm-svn: 348065
Shoaib Meenai [Sat, 1 Dec 2018 01:41:27 +0000 (01:41 +0000)]
[projects] Use add_llvm_external_project for implicit projects
This allows disabling implicit projects via the LLVM_TOOL_*_BUILD
variables, similar to how implicit tools can be disabled. They'll still
be enabled by default, since add_llvm_external_project defaults the
LLVM_TOOL_*_BUILD variables to ON for in-tree implciit projects.
Differential Revision: https://reviews.llvm.org/D55105
llvm-svn: 348064
Craig Topper [Sat, 1 Dec 2018 01:38:44 +0000 (01:38 +0000)]
[X86][LoopVectorize] Replace -mcpu=skylake-avx512 with -mattr=avx512f in some tests that failed when experimenting with defaulting to -mprefer-vector-width=256 for skylake-avx512.
llvm-svn: 348063
Adrian Prantl [Sat, 1 Dec 2018 01:30:00 +0000 (01:30 +0000)]
Relax test to also work on Windows.
llvm-svn: 348062
Vitaly Buka [Sat, 1 Dec 2018 01:24:29 +0000 (01:24 +0000)]
[compiler-rt] Use "ColumnLimit: 0" instead of "clang-format off" in tests
Reviewers: eugenis, jfb
Subscribers: kubamracek, dberris, llvm-commits
Differential Revision: https://reviews.llvm.org/D55152
llvm-svn: 348061
Adrian Prantl [Sat, 1 Dec 2018 00:24:27 +0000 (00:24 +0000)]
Honor -fdebug-prefix-map when creating function names for the debug info.
This adds a callback to PrintingPolicy to allow CGDebugInfo to remap
file paths according to -fdebug-prefix-map. Otherwise the debug info
(particularly function names for C++ lambdas) may contain paths that
should have been remapped in the debug info.
<rdar://problem/
46128056>
Differential Revision: https://reviews.llvm.org/D55137
llvm-svn: 348060
Zachary Turner [Sat, 1 Dec 2018 00:22:39 +0000 (00:22 +0000)]
Use RequireNullTerminator=false in identify_magic.
identify_magic does not need the file to be null terminated. Passing
true here causes the file reading code to decide not to use mmap in
some rare cases (which happen to be true 100% of the time in PDB files)
which can lead to very large files failing to load. Since it was
probably just an accident that we were passing true here (since it is
the default function parameter), this should be strictly an improvement.
llvm-svn: 348059
Zachary Turner [Sat, 1 Dec 2018 00:22:21 +0000 (00:22 +0000)]
[lit] Add a generic build script with a lit substitution.
This adds a script called build.py as well as a lit substitution
called %build that we can use to invoke it. The idea is that
this allows a lit test to build test inferiors without having
to worry about architecture / platform specific differences,
command line syntax, finding / configurationg a proper toolchain,
and other issues. They can simply write something like:
%build --arch=32 -o %t.exe %p/Inputs/foo.cpp
and it will just work. This paves the way for being able to
run lit tests with multiple configurations, platforms, and
compilers with a single test.
Differential Revision: https://reviews.llvm.org/D54914
llvm-svn: 348058
Artem Belevich [Sat, 1 Dec 2018 00:21:52 +0000 (00:21 +0000)]
[NVPTX] Add lowering of i128 numbers as struct fields
Addition to D34555 - override VTs computation with ComputePTXValueVTs
for struct fields.
Author: Denys Zariaiev<denys.zariaiev@gmail.com>
Differential Revision: https://reviews.llvm.org/D55144
llvm-svn: 348057
Craig Topper [Sat, 1 Dec 2018 00:21:49 +0000 (00:21 +0000)]
[X86] Replace '-mcpu=skx' with -mattr=avx512f or -mattr=avx512bw in interleave/strided load/store cost model tests.
llvm-svn: 348056
Stella Stamenova [Sat, 1 Dec 2018 00:18:19 +0000 (00:18 +0000)]
[windows] Fix two minor bugs on Windows
1. In ProcessWindows if we fail to allocate memory, we need to return LLDB_INVALID_ADDRESS rather than 0 or nullptr as that is the invalid address that LLDB looks for
2. In RegisterContextWindows in ReadAllRegisterValues, always create a new buffer. This is what the other platforms do and data_sp is always null in all tested scenarios on Windows as well
llvm-svn: 348055
Nico Weber [Sat, 1 Dec 2018 00:02:39 +0000 (00:02 +0000)]
[gn build] Add action to generate VCSRevision.h and use it to add llvm/lib/Object/BUILD.gn
Differential Revision: https://reviews.llvm.org/D55090
llvm-svn: 348054
Fangrui Song [Fri, 30 Nov 2018 23:41:18 +0000 (23:41 +0000)]
Revert "Revert r347417 "Re-Reinstate 347294 with a fix for the failures.""
It seems the two failing tests can be simply fixed after r348037
Fix 3 cases in Analysis/builtin-functions.cpp
Delete the bad CodeGen/builtin-constant-p.c for now
llvm-svn: 348053
Reid Kleckner [Fri, 30 Nov 2018 23:32:11 +0000 (23:32 +0000)]
[codeview] Remove dead macros for codeview record serialization, NFC
These weren't needed when we went to the yaml IO style of serialization,
which has "mapOptional".
llvm-svn: 348052
Nicolai Haehnle [Fri, 30 Nov 2018 23:07:49 +0000 (23:07 +0000)]
LegacyDivergenceAnalysis: fix uninitialized value
Change-Id: I014502e431a68f7beddf169f6a3d19dac5dd2c26
llvm-svn: 348051
Nicolai Haehnle [Fri, 30 Nov 2018 22:55:38 +0000 (22:55 +0000)]
AMDGPU: Divergence-driven selection of scalar buffer load intrinsics
Summary:
Moving SMRD to VMEM in SIFixSGPRCopies is rather bad for performance if
the load is really uniform. So select the scalar load intrinsics directly
to either VMEM or SMRD buffer loads based on divergence analysis.
If an offset happens to end up in a VGPR -- either because a floating
point calculation was involved, or due to other remaining deficiencies
in SIFixSGPRCopies -- we use v_readfirstlane.
There is some unrelated churn in tests since we now select MUBUF offsets
in a unified way with non-scalar buffer loads.
Change-Id: I170e6816323beb1348677b358c9d380865cd1a19
Reviewers: arsenm, alex-t, rampitec, tpr
Subscribers: kzhuravl, jvesely, wdng, yaxunl, dstuttard, t-tye, llvm-commits
Differential Revision: https://reviews.llvm.org/D53283
llvm-svn: 348050
Nicolai Haehnle [Fri, 30 Nov 2018 22:55:29 +0000 (22:55 +0000)]
AMDGPU: Fix various issues around the VirtReg2Value mapping
Summary:
The VirtReg2Value mapping is crucial for getting consistently
reliable divergence information into the SelectionDAG. This
patch fixes a bunch of issues that lead to incorrect divergence
info and introduces tight assertions to ensure we don't regress:
1. VirtReg2Value is generated lazily; there were some cases where
a lookup was performed before all relevant virtual registers were
created, leading to an out-of-sync mapping. Those cases were:
- Complex code to lower formal arguments that generated CopyFromReg
nodes from live-in registers (fixed by never querying the mapping
for live-in registers).
- Code that generates CopyToReg for formal arguments that are used
outside the entry basic block (fixed by never querying the
mapping for Register nodes, which don't need the divergence info
anyway).
2. For complex values that are lowered to a sequence of registers,
all registers must be reflected in the VirtReg2Value mapping.
I am not adding any new tests, since I'm not actually aware of any
bugs that these problems are causing with trunk as-is. However,
I recently added a test case (in r346423) which fails when D53283 is
applied without this change. Also, the new assertions should provide
most of the effective test coverage.
There is one test change in sdwa-peephole.ll. The underlying issue
is that since the divergence info is now correct, the DAGISel will
select V_OR_B32 directly instead of S_OR_B32. This leads to an extra
COPY which affects the behavior of MachineLICM in a way that ends up
with the S_MOV_B32 with the constant in a different basic block than
the V_OR_B32, which is presumably what defeats the peephole.
Reviewers: alex-t, arsenm, rampitec
Subscribers: kzhuravl, jvesely, wdng, yaxunl, dstuttard, tpr, t-tye, llvm-commits
Differential Revision: https://reviews.llvm.org/D54340
llvm-svn: 348049
Nicolai Haehnle [Fri, 30 Nov 2018 22:55:20 +0000 (22:55 +0000)]
[DA] GPUDivergenceAnalysis for unstructured GPU kernels
Summary:
This is patch #3 of the new DivergenceAnalysis
<https://lists.llvm.org/pipermail/llvm-dev/2018-May/123606.html>
The GPUDivergenceAnalysis is intended to eventually supersede the existing
LegacyDivergenceAnalysis. The existing LegacyDivergenceAnalysis produces
incorrect results on unstructured Control-Flow Graphs:
<https://bugs.llvm.org/show_bug.cgi?id=37185>
This patch adds the option -use-gpu-divergence-analysis to the
LegacyDivergenceAnalysis to turn it into a transparent wrapper for the
GPUDivergenceAnalysis.
Reviewers: nhaehnle
Reviewed By: nhaehnle
Subscribers: jholewinski, jvesely, jfb, llvm-commits, alex-t, sameerds, arsenm, nhaehnle
Differential Revision: https://reviews.llvm.org/D53493
llvm-svn: 348048
Sanjay Patel [Fri, 30 Nov 2018 22:54:33 +0000 (22:54 +0000)]
[x86] add tests for undef + partial undef constant folding; NFC
Keep this file sync'd with the instsimplify version (rL348045).
llvm-svn: 348047
Craig Topper [Fri, 30 Nov 2018 22:53:21 +0000 (22:53 +0000)]
[X86] Split skylake-avx512 run lines in SLP vectorizer tests to cover -mprefer=vector-width=256 and -mprefer-vector-width=512.
This will make these tests immune if we ever change the default behavior of -march=skylake-avx512 to prefer 256 bit vectors.
llvm-svn: 348046
Sanjay Patel [Fri, 30 Nov 2018 22:51:34 +0000 (22:51 +0000)]
[InstSimplify] add tests for undef + partial undef constant folding; NFC
These tests should probably go under a separate test file because they
should fold with just -constprop, but they're similar to the scalar
tests already in here.
llvm-svn: 348045
Kristof Umann [Fri, 30 Nov 2018 22:32:17 +0000 (22:32 +0000)]
[analyzer] Deleting unnecessary test file
That I really should've done in rC348031.
llvm-svn: 348044
Nikita Popov [Fri, 30 Nov 2018 22:22:30 +0000 (22:22 +0000)]
[ValueTracking] Make unit tests easier to write; NFC
Generalize the existing MatchSelectPatternTest class to also work
with other types of tests. This reduces the amount of boilerplate
necessary to write ValueTracking tests in general, and computeKnownBits
tests in particular.
The inherited convention is that the function must be @test and the
tested instruction %A.
Differential Revision: https://reviews.llvm.org/D55141
llvm-svn: 348043
Saleem Abdulrasool [Fri, 30 Nov 2018 22:13:42 +0000 (22:13 +0000)]
Support: use std::is_trivially_copyable on MSVC
MSVC 2015 and newer have std::is_trivially_copyable available for use.
We should prefer that over the std::is_class to get this check be
correct.
llvm-svn: 348042
Brad Smith [Fri, 30 Nov 2018 21:42:34 +0000 (21:42 +0000)]
Add myself as code owner for OpenBSD driver
llvm-svn: 348041
Jason Molenda [Fri, 30 Nov 2018 21:33:00 +0000 (21:33 +0000)]
Add a test to verify that lldb can load a kext binary.
<rdar://problem/
46356062>
llvm-svn: 348040
Fangrui Song [Fri, 30 Nov 2018 21:26:09 +0000 (21:26 +0000)]
Revert r347417 "Re-Reinstate 347294 with a fix for the failures."
Kept the "indirect_builtin_constant_p" test case in test/SemaCXX/constant-expression-cxx1y.cpp
while we are investigating why the following snippet fails:
extern char extern_var;
struct { int a; } a = {__builtin_constant_p(extern_var)};
llvm-svn: 348039
Kristof Umann [Fri, 30 Nov 2018 21:24:31 +0000 (21:24 +0000)]
[analyzer] Emit an error for invalid -analyzer-config inputs
Differential Revision: https://reviews.llvm.org/D53280
llvm-svn: 348038
Fangrui Song [Fri, 30 Nov 2018 21:15:41 +0000 (21:15 +0000)]
[ExprConstant] Try fixing __builtin_constant_p after D54355 (rC347417)
Summary:
Reinstate the original behavior (Success(false, E)) before D54355 when this branch is
taken. This fixes spurious error of the following snippet:
extern char extern_var;
struct { int a; } a = {__builtin_constant_p(extern_var)};
llvm-svn: 348037
Jessica Paquette [Fri, 30 Nov 2018 21:14:58 +0000 (21:14 +0000)]
[MachineOutliner] Outline both register save calls + no LR save calls together
Instead of treating the outlined functions for these as distinct frames, they
should be combined into one case. Neither allows for stack fixups, and both
generate the same frame. Thus, they ought to be considered one case.
This makes the code far easier to understand, for one thing. It also offers
some small code size improvements. It's fairly rare to see a class of outlined
functions that doesn't fall entirely into one variant (on CTMark anyway). It
does happen from time to time though.
This mostly offers some serious simplification.
Also update the test to show the added functionality.
llvm-svn: 348036
Peter Collingbourne [Fri, 30 Nov 2018 21:04:25 +0000 (21:04 +0000)]
AArch64: Don't emit CFI for SCS register in nounwind functions.
All that you can legitimately do with the CFI for a nounwind function
is get a backtrace, and adjusting the SCS register is not (currently)
required for this purpose.
Differential Revision: https://reviews.llvm.org/D54988
llvm-svn: 348035
Evandro Menezes [Fri, 30 Nov 2018 21:03:24 +0000 (21:03 +0000)]
[TableGen] Fix negation of simple predicates
Simple predicates, such as those defined by `CheckRegOperandSimple` or
`CheckImmOperandSimple`, were not being negated when used with `CheckNot`.
This change fixes this issue by defining the previously declared methods to
handle simple predicates.
Differential revision: https://reviews.llvm.org/D55089
llvm-svn: 348034
Aaron Ballman [Fri, 30 Nov 2018 20:55:26 +0000 (20:55 +0000)]
Adding tests for -ast-dump; NFC.
This adds tests for struct and union declarations in C. It also points out a bug when dumping anonymous record types -- they are sometimes reported as being contained by something of the wrong tag type. e.g., an anonymous struct inside of a union named X reports the anonymous struct as being inside of 'struct X' rather than 'union X'.
llvm-svn: 348033
Bill Wendling [Fri, 30 Nov 2018 20:44:11 +0000 (20:44 +0000)]
Revert r348029. I was git-ing and jumped the gun.
llvm-svn: 348032
Kristof Umann [Fri, 30 Nov 2018 20:44:00 +0000 (20:44 +0000)]
[analyzer] Evaluate all non-checker config options before analysis
In earlier patches regarding AnalyzerOptions, a lot of effort went into
gathering all config options, and changing the interface so that potential
misuse can be eliminited.
Up until this point, AnalyzerOptions only evaluated an option when it was
querried. For example, if we had a "-no-false-positives" flag, AnalyzerOptions
would store an Optional field for it that would be None up until somewhere in
the code until the flag's getter function is called.
However, now that we're confident that we've gathered all configs, we can
evaluate off of them before analysis, so we can emit a error on invalid input
even if that prticular flag will not matter in that particular run of the
analyzer. Another very big benefit of this is that debug.ConfigDumper will now
show the value of all configs every single time.
Also, almost all options related class have a similar interface, so uniformity
is also a benefit.
The implementation for errors on invalid input will be commited shorty.
Differential Revision: https://reviews.llvm.org/D53692
llvm-svn: 348031
George Karpenkov [Fri, 30 Nov 2018 20:43:42 +0000 (20:43 +0000)]
Revert "Reverting r347949-r347951 because they broke the test bots."
This reverts commit
5bad6129c012fbf186eb055be49344e790448ecc.
Hopefully fixing the issue which was breaking the bots.
llvm-svn: 348030
Bill Wendling [Fri, 30 Nov 2018 20:40:06 +0000 (20:40 +0000)]
We're in a constant context in the ConstantEmitter.
llvm-svn: 348029
Matthew Voss [Fri, 30 Nov 2018 19:52:50 +0000 (19:52 +0000)]
Expect mixed path separators in FileManagerTest when resolving paths on Win32
llvm-svn: 348028
Kamil Rytarowski [Fri, 30 Nov 2018 19:43:53 +0000 (19:43 +0000)]
Add a new interceptor for getvfsstat(2) from NetBSD
Summary:
getvfsstat - gets list of all mounted file systems.
Add a dedicated test.
Reviewers: vitalybuka, joerg
Reviewed By: vitalybuka
Subscribers: kubamracek, llvm-commits, mgorny, #sanitizers
Tags: #sanitizers
Differential Revision: https://reviews.llvm.org/D55014
llvm-svn: 348027
Aaron Ballman [Fri, 30 Nov 2018 19:32:35 +0000 (19:32 +0000)]
Revert an inadvertent change from r348020.
llvm-svn: 348026
Kristof Umann [Fri, 30 Nov 2018 19:21:35 +0000 (19:21 +0000)]
[analyzer][PlistMacroExpansion] Part 5.: Support for # and ##
From what I can see, this should be the last patch needed to replicate macro
argument expansions.
Differential Revision: https://reviews.llvm.org/D52988
llvm-svn: 348025
Joseph Tremoulet [Fri, 30 Nov 2018 19:20:02 +0000 (19:20 +0000)]
[Mem2Reg] Fix nondeterministic corner case
Summary:
When mem2reg inserts phi nodes in blocks with unreachable predecessors,
it adds undef operands for those incoming edges. When there are
multiple such predecessors, the order is currently based on the address
of the BasicBlocks. This change fixes that by using the BBNumbers in
the sort/search predicates, as is done elsewhere in mem2reg to ensure
determinism.
Also adds a testcase with a bunch of unreachable preds, which
(nodeterministically) fails without the fix.
Reviewers: majnemer
Reviewed By: majnemer
Subscribers: mgrang, llvm-commits
Differential Revision: https://reviews.llvm.org/D55077
llvm-svn: 348024
Aaron Ballman [Fri, 30 Nov 2018 19:15:07 +0000 (19:15 +0000)]
Updating this test, which changed after the reverts from r348020.
llvm-svn: 348023
Scott Linder [Fri, 30 Nov 2018 19:13:38 +0000 (19:13 +0000)]
[DWARFv5] Verify all-or-nothing constraint on DIFile source
Update IR verifier to check the constraint that DIFile source is present on all
files or no files.
Differential Revision: https://reviews.llvm.org/D54953
llvm-svn: 348022
Jonas Devlieghere [Fri, 30 Nov 2018 18:56:10 +0000 (18:56 +0000)]
[dsymutil] Gather global and local symbol addresses in the main executable.
Usually local symbols will have their address described in the debug
map. Global symbols have to have their address looked up in the symbol
table of the main executable. By playing with 'ld -r' and export lists,
you can get a symbol described as global by the debug map while actually
being a local symbol as far as the link in concerned. By gathering the
address of local symbols, we fix this issue.
Also, we prefer a global symbol in case of a name collision to preserve
the previous behavior.
Note that using the 'ld -r' tricks, people can actually cause symbol
names collisions that dsymutil has no way to figure out. This fixes the
simple case where there is only one symbol of a given name.
rdar://problem/
32826621
Differential revision: https://reviews.llvm.org/D54922
llvm-svn: 348021
Aaron Ballman [Fri, 30 Nov 2018 18:52:51 +0000 (18:52 +0000)]
Reverting r347949-r347951 because they broke the test bots.
http://lab.llvm.org:8011/builders/clang-cmake-armv8-lld/builds/440/steps/ninja%20check%202/logs/FAIL%3A%20Clang%3A%3Aosobject-retain-release.cpp
llvm-svn: 348020
Craig Topper [Fri, 30 Nov 2018 18:43:18 +0000 (18:43 +0000)]
[X86] Change vXi8 MULHU lowering to unpack high and low half of lanes instead of extracting and concating low and high half registers.
This reduces the number of shuffle operations that need to be done. The splitting strategy requires the shuffle unit for the extraction and the extension. With the unpack strategy the unpacks accomplish a splitting and extending in one operation.
llvm-svn: 348019
Craig Topper [Fri, 30 Nov 2018 18:43:15 +0000 (18:43 +0000)]
[X86] Prefer lowerVectorShuffleAsBitMask over using a avx512 masked operation when avx512bw/avx512vl is enabled.
This does require a constant pool load instead of loading an immediate into a gpr, moving to a k register and masking. But its less instructions and more consistent with previous ISAs. It probably opens up more combine opportunities as one of the test cases demonstrates.
llvm-svn: 348018
Aaron Ballman [Fri, 30 Nov 2018 18:43:02 +0000 (18:43 +0000)]
Move AST tests into their own test directory; NFC.
This moves everything primarily testing the functionality of -ast-dump and -ast-print into their own directory, rather than leaving the tests spread around the testing directory.
llvm-svn: 348017
Sanjay Patel [Fri, 30 Nov 2018 18:38:52 +0000 (18:38 +0000)]
[SelectionDAG] fold FP binops with 2 undef operands to undef
llvm-svn: 348016
Kadir Cetinkaya [Fri, 30 Nov 2018 18:36:31 +0000 (18:36 +0000)]
[clang] Fix rL348006 for windows
llvm-svn: 348015
Ron Lieberman [Fri, 30 Nov 2018 18:29:17 +0000 (18:29 +0000)]
[AMDGPU] Disable SReg Global LD/ST, perf regression
Differential Revision: https://reviews.llvm.org/D55093
llvm-svn: 348014
Rui Ueyama [Fri, 30 Nov 2018 18:19:15 +0000 (18:19 +0000)]
Inline a function template that is used only once. NFC.
llvm-svn: 348013
Jonas Devlieghere [Fri, 30 Nov 2018 17:31:20 +0000 (17:31 +0000)]
Skip TestRequireHWBreakpoints on Windows
The test assumes that HW breakpoints are not implemented by the debug
server. Windows doesn't use these and might actually support HW
breakpoints so these tests are expected fail because they don't raise
the expected error.
llvm-svn: 348010
Stella Stamenova [Fri, 30 Nov 2018 17:29:54 +0000 (17:29 +0000)]
Revert "[PDB] Support PDB-backed expressions evaluation"
This reverts commit
dec87759523b2f22fcff3325bc2cd543e4cda0e7.
This commit caused the tests on Windows to run forever rather than complete.
Reverting until the commit can be fixed to not stall.
llvm-svn: 348009
Aaron Ballman [Fri, 30 Nov 2018 17:19:06 +0000 (17:19 +0000)]
Adding tests for -ast-dump; NFC.
This adds tests for GenericSelectionExpr; note that it points out a minor whitespace bug for selection expression cases.
llvm-svn: 348008
Andrea Di Biagio [Fri, 30 Nov 2018 17:15:52 +0000 (17:15 +0000)]
[llvm-mca] Speedup the default resource selection strategy.
This patch removes a (potentially) slow while loop in
DefaultResourceStrategy::select(). A better (and faster) approach is to do some
bit manipulation in order to shrink the range of candidate resources.
On a release build, this change gives an average speedup of ~10%.
llvm-svn: 348007
Kadir Cetinkaya [Fri, 30 Nov 2018 17:10:11 +0000 (17:10 +0000)]
[clang] Fill RealPathName for virtual files.
Summary:
Absolute path information for virtual files were missing even if we
have already stat'd the files. This patch puts that information for virtual
files that can succesffully be stat'd.
Reviewers: ilya-biryukov
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D55054
llvm-svn: 348006
Kadir Cetinkaya [Fri, 30 Nov 2018 16:59:00 +0000 (16:59 +0000)]
[clangd] Populate include graph during static indexing action.
Summary:
This is the second part for introducing include hierarchy into index
files produced by clangd. You can see the base patch that introduces structures
and discusses the future of the patches in D54817
Reviewers: ilya-biryukov
Subscribers: mgorny, ioeric, MaskRay, jkorous, arphaman, cfe-commits
Differential Revision: https://reviews.llvm.org/D54999
llvm-svn: 348005
Yonghong Song [Fri, 30 Nov 2018 16:54:43 +0000 (16:54 +0000)]
Revert "[BTF] Add BTF DebugInfo"
This reverts commit
9c6b970db8bc63b28ce58a129bb1580a6a3c6caf.
llvm-svn: 348004
Alexey Bataev [Fri, 30 Nov 2018 16:52:38 +0000 (16:52 +0000)]
[OPENMP][NVPTX]Make runtime compatible with the original runtime.
Summary:
Reworked runtime to make it compatible with the requirements of the
original runtime library. Also, simplified some code to reduce number of
function calls.
Reviewers: gtbercea, kkwli0
Subscribers: guansong, jfb, caomhin, openmp-commits
Differential Revision: https://reviews.llvm.org/D55130
llvm-svn: 348003
Sanjay Patel [Fri, 30 Nov 2018 16:50:08 +0000 (16:50 +0000)]
[x86] add tests for fake vector FP ops; NFC
llvm-svn: 348002
Alexandre Ganea [Fri, 30 Nov 2018 16:36:40 +0000 (16:36 +0000)]
[PDB] Quote linker arguments containing spaces (mimic MSVC)
Initial patch by Will Wilson (@lantictac)
Differential Revision: https://reviews.llvm.org/D55074
llvm-svn: 348001
Rui Ueyama [Fri, 30 Nov 2018 16:34:56 +0000 (16:34 +0000)]
Do not assume .idata is zero-initialized.
We initialize .text section with 0xcc (INT3 instruction), so we need to
explicitly write data even if it is zero if it can be in a .text section.
If you specify /merge:.rdata=.text, .rdata (which contains .idata) is put
to .text, so we need to do this.
Fixes https://bugs.llvm.org/show_bug.cgi?id=39826
Differential Revision: https://reviews.llvm.org/D55098
llvm-svn: 348000
Yonghong Song [Fri, 30 Nov 2018 16:22:59 +0000 (16:22 +0000)]
[BTF] Add BTF DebugInfo
This patch adds BPF Debug Format (BTF) as a standalone
LLVM debuginfo. The BTF related sections are directly
generated from IR. The BTF debuginfo is generated
only when the compilation target is BPF.
What is BTF?
============
First, the BPF is a linux kernel virtual machine
and widely used for tracing, networking and security.
https://www.kernel.org/doc/Documentation/networking/filter.txt
https://cilium.readthedocs.io/en/v1.2/bpf/
BTF is the debug info format for BPF, introduced in the below
linux patch
https://github.com/torvalds/linux/commit/
69b693f0aefa0ed521e8bd02260523b5ae446ad7#diff-
06fb1c8825f653d7e539058b72c83332
in the patch set mentioned in the below lwn article.
https://lwn.net/Articles/752047/
The BTF format is specified in the above github commit.
In summary, its layout looks like
struct btf_header
type subsection (a list of types)
string subsection (a list of strings)
With such information, the kernel and the user space is able to
pretty print a particular bpf map key/value. One possible example below:
Withtout BTF:
key: [ 0x01, 0x01, 0x00, 0x00 ]
With BTF:
key: struct t { a : 1; b : 1; c : 0}
where struct is defined as
struct t { char a; char b; short c; };
How BTF is generated?
=====================
Currently, the BTF is generated through pahole.
https://git.kernel.org/pub/scm/devel/pahole/pahole.git/commit/?id=
68645f7facc2eb69d0aeb2dd7d2f0cac0feb4d69
and available in pahole v1.12
https://git.kernel.org/pub/scm/devel/pahole/pahole.git/commit/?id=
4a21c5c8db0fcd2a279d067ecfb731596de822d4
Basically, the bpf program needs to be compiled with -g with
dwarf sections generated. The pahole is enhanced such that
a .BTF section can be generated based on dwarf. This format
of the .BTF section matches the format expected by
the kernel, so a bpf loader can just take the .BTF section
and load it into the kernel.
https://github.com/torvalds/linux/commit/
8a138aed4a807ceb143882fb23a423d524dcdb35
The .BTF section layout is also specified in this patch:
with file include/llvm/BinaryFormat/BTF.h.
What use cases this patch tries to address?
===========================================
Currently, only the bpf instruction stream is required to
pass to the kernel. The kernel verifies it, jits it if configured
to do so, attaches it to a particular kernel attachment point,
and later executes when a particular event happens.
This patch tries to expand BTF to support two more use cases below:
(1). BPF supports subroutine calls.
During performance analysis, it would be good to
differentiate which call is hot instead of just
providing a virtual address. This would require to
pass a unique identifier for each subroutine to
the kernel, the subroutine name is a natual choice.
(2). If a particular jitted instruction is hot, we want
user to know which source line this jitted instruction
belongs to. This would require the source information
is available to various profiling tools.
Note that in a single ELF file,
. there may be multiple loadable bpf programs,
. for a particular to-be-loaded bpf instruction stream,
its instructions may come from multiple PROGBITS sections,
the bpf loader needs to merge them together to a single
consecutive insn stream before loading to the kernel.
For example:
section .text: subroutines funcFoo
section _progA: calling funcFoo
section _progB: calling funcFoo
The bpf loader could construct two loadable bpf instruction
streams and load them into the kernel:
. _progA funcFoo
. _progB funcFoo
So per ELF section function offset and instruction offset
will need to be adjusted before passing to the kernel, and
the kernel essentially expect only one code section regardless
of how many in the ELF file.
What do we propose and Why?
===========================
To support the above two use cases, we propose to
add an additional section, .BTF.ext, to the ELF file
which is the input of the bpf loader. A different section
is preferred since loader may need to manipulate it before
loading part of its data to the kernel.
The .BTF.ext section has a similar header to the .BTF section
and it contains two subsections for func_info and line_info.
. the func_info maps the func insn byte offset to a func
type in the .BTF type subsection.
. the line_info maps the insn byte offset to a line info.
. both func_info and line_info subsections are organized
by ELF PROGBITS AX sections.
pahole is not a good place to implement .BTF.ext as
pahole is mostly for structure hole information and more
importantly, we want to pass the actual code to the kernel.
. bpf program typically is small so storage overhead
should be small.
. in bpf land, it is totally possible that
an application loads the bpf program into the
kernel and then that application quits, so
holding debug info by the user space application
is not practical as you may not even know who
loads this bpf program.
. having source codes directly kept by kernel
would ease deployment since the original source
code does not need ship on every hosts and
kernel-devel package does not need to be
deployed even if kernel headers are used.
LLVM is a good place to implement.
. The only reliable time to get the source code is
during compilation time. This will result in both more
accurate information and easier deployment as
stated in the above.
. Another consideration is for JIT. The project like bcc
(https://github.com/iovisor/bcc)
use MCJIT to compile a C program into bpf insns and
load them to the kernel. The llvm generated BTF sections
will be readily available for such cases as well.
Design and implementation of emiting .BTF/.BTF.ext sections
===========================================================
The BTF debuginfo format is defined. Both .BTF and .BTF.ext
sections are generated directly from IR when both
"-target bpf" and "-g" are specified. Note that
dwarf sections are still generated as dwarf is used
by user space tools like llvm-objdump etc. for BPF target.
This patch also contains tests to verify generated
.BTF and .BTF.ext sections for all supported types, func_info
and line_info subsections. The patch is also tested
against linux kernel bpf sample tests and selftests.
Signed-off-by: Yonghong Song <yhs@fb.com>
Differential Revision: https://reviews.llvm.org/D53736
llvm-svn: 347999
Than McIntosh [Fri, 30 Nov 2018 16:22:41 +0000 (16:22 +0000)]
[CodeGen] Prefer static frame index for STATEPOINT liveness args
Summary:
If a given liveness arg of STATEPOINT is at a fixed frame index
(e.g. a function argument passed on stack), prefer to use this
fixed location even the address is also in a register. If we use
the register it will generate a spill, which is not necessary
since the fixed frame index can be directly recorded in the stack
map.
Patch by Cherry Zhang <cherryyz@google.com>.
Reviewers: thanm, niravd, reames
Reviewed By: reames
Subscribers: cherryyz, reames, anna, arphaman, llvm-commits
Differential Revision: https://reviews.llvm.org/D53889
llvm-svn: 347998
Alexey Bataev [Fri, 30 Nov 2018 15:14:20 +0000 (15:14 +0000)]
[SLP]PR39774: Update references of the replaced external instructions.
Summary:
An additional fix for PR39774. Need to update the references for the
RedcutionRoot instruction when it is replaced during the vectorization
phase to avoid compiler crash on reduction vectorization.
Reviewers: RKSimon, spatel
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D55017
llvm-svn: 347997
Aaron Ballman [Fri, 30 Nov 2018 15:11:16 +0000 (15:11 +0000)]
Adding tests for -ast-dump; NFC.
This adds tests for DeclStmt and demonstrates that we don't create such an AST node for global declarations currently.
llvm-svn: 347996
Nico Weber [Fri, 30 Nov 2018 14:49:46 +0000 (14:49 +0000)]
[gn build] Add build files for llvm/lib/Bitcode/Reader and llvm/lib/MC/MCParser.
Differential Revision: https://reviews.llvm.org/D55087
llvm-svn: 347995
Aaron Ballman [Fri, 30 Nov 2018 14:43:21 +0000 (14:43 +0000)]
Adding tests for -ast-dump; NFC.
This adds tests for the majority of the functionality around FunctionDecl and CXXMethodDecl.
llvm-svn: 347994
Valery Pykhtin [Fri, 30 Nov 2018 14:21:56 +0000 (14:21 +0000)]
[AMDGPU] Combine DPP mov with use instructions (VOP1/2/3)
Introduces DPP pseudo instructions and the pass that combines DPP mov with subsequent uses.
Differential revision: https://reviews.llvm.org/D53762
llvm-svn: 347993
Nicolai Haehnle [Fri, 30 Nov 2018 14:15:13 +0000 (14:15 +0000)]
TableGen/ISel: Allow PatFrag predicate code to access captured operands
Summary:
This simplifies writing predicates for pattern fragments that are
automatically re-associated or commuted.
For example, a followup patch adds patterns for fragments of the form
(add (shl $x, $y), $z) to the AMDGPU backend. Such patterns are
automatically commuted to (add $z, (shl $x, $y)), which makes it basically
impossible to refer to $x, $y, and $z generically in the PredicateCode.
With this change, the PredicateCode can refer to $x, $y, and $z simply
as `Operands[i]`.
Test confirmed that there are no changes to any of the generated files
when building all (non-experimental) targets.
Change-Id: I61c00ace7eed42c1d4edc4c5351174b56b77a79c
Reviewers: arsenm, rampitec, RKSimon, craig.topper, hfinkel, uweigand
Subscribers: wdng, tpr, llvm-commits
Differential Revision: https://reviews.llvm.org/D51994
llvm-svn: 347992