Commit Graph

375244 Commits

Author SHA1 Message Date
Roman Lebedev 5cce4aff18
[SimplifyCFG] TryToSimplifyUncondBranchFromEmptyBlock() already knows how to preserve DomTree
... so just ensure that we pass DomTreeUpdater it into it.

Fixes DomTree preservation for a large number of tests,
all of which are marked as such so that they do not regress.
2020-12-17 01:03:49 +03:00
Roman Lebedev 49dac4aca0
[SimplifyCFG] MergeBlockIntoPredecessor() already knows how to preserve DomTree
... so just ensure that we pass DomTreeUpdater it into it.

Fixes DomTree preservation for a large number of tests,
all of which are marked as such so that they do not regress.
2020-12-17 01:03:49 +03:00
Roman Lebedev 4fc169f664
[SimplifyCFG] removeUnreachableBlocks() already knows how to preserve DomTree
... so just ensure that we pass DomTreeUpdater it into it.

Apparently, there were no dedicated tests just for that functionality,
so i'm adding one here.
2020-12-17 01:03:49 +03:00
Roman Lebedev aa2009fe78
[NFCI][SimplifyCFG] Mark all the SimplifyCFG tests that already don't invalidate DomTree as such
First step after e113317958,
in these tests, DomTree is valid afterwards, so mark them as such,
so that they don't regress.

In further steps, SimplifyCFG transforms shall taught to preserve DomTree,
in as small steps as possible.
2020-12-17 01:03:49 +03:00
Fangrui Song 1bd928e50b [AArch64InstPrinter] Use * 4096 instead of << 12
Left shirting a negative integer is undefined before C++20.
2020-12-16 14:02:25 -08:00
Louis Dionne 46ae360452 [libc++] Fix CI Dockerfile
Installing clang-format-11 doesn't seem to work if it's done before
we've installed LLVM. I must admit I didn't try to get to the bottom
of the issue, since installing it after seems to work.
2020-12-16 17:01:21 -05:00
Reid Kleckner b7905e81fc Fix split-debug.c test on Windows 2020-12-16 13:48:57 -08:00
Rong Xu 0abd744597 [PGO] Use the sum of profile counts to fix the function entry count
Raw profile count values for each BB are not kept after profile
annotation. We record function entry count and branch weights
and use them to compute the count when needed.  This mechanism
works well in a perfect world, but often breaks in real programs,
because of number prevision, inconsistent profile, or bugs in
BFI). This patch uses sum of profile count values to fix
function entry count to make the BFI count close to real profile
counts.

Differential Revision: https://reviews.llvm.org/D61540
2020-12-16 13:37:43 -08:00
Marek Kurdej d69fc6629d [libc++] Install git-clang-format on CI nodes.
Two problems fixed:
* an old version of clang-format get installed by default (6.0).
* git-clang-format is not present, only git-clang-format-<version> (e.g. git-clang-format-6.0).

Solution:
* install clang-format-11 with explicit version
* make symlink git-clang-format to the latest version of git-clang-format-<version>

Differential Revision: https://reviews.llvm.org/D93201
2020-12-16 16:36:34 -05:00
Reid Kleckner 15ca54525d Fix XCore test on Windows, the register order is reversed, for reasons unknown 2020-12-16 13:33:24 -08:00
Sanjay Patel 46c331bf26 [VectorCombine] adjust test alignments for better coverage; NFC 2020-12-16 16:30:45 -05:00
Fangrui Song ef74f0fdc3 [libc++abi] Remove redundant null pointer check in operator delete
Similar to D52401. Normally operator delete is defined in libc++abi
(LIBCPP_DISABLE_NEW_DELETE_DEFINITIONS is off by default).

C89 4.10.3.2 The free function
C99 7.20.3.2 The free function
C11 7.22.3.3 The free function

    If ptr is a null pointer, no action shall occur.

free on MSDN:

    If memblock is NULL, the pointer is ignored and free immediately returns.

Reviewed By: #libc_abi, ldionne

Differential Revision: https://reviews.llvm.org/D93339
2020-12-16 13:29:40 -08:00
Nikita Popov e728024808 [DSE] Pass MemoryLocation by const ref (NFC) 2020-12-16 21:47:46 +01:00
Mircea Trofin cd551f8564 [NFC] Remove unused prefixes in llvm/test/CodeGen/X86
Differential Revision: https://reviews.llvm.org/D92965
2020-12-16 12:41:49 -08:00
Sanjay Patel 38ebc1a13d [VectorCombine] optimize alignment for load transform
Here's another minimal step suggested by D93229 / D93397 .
(I'm trying to be extra careful in these changes because
load transforms are easy to get wrong.)

We can optimistically choose the greater alignment of a
load and its pointer operand. As the test diffs show, this
can improve what would have been unaligned vector loads
into aligned loads.

When we enhance with gep offsets, we will need to adjust
the alignment calculation to include that offset.

Differential Revision: https://reviews.llvm.org/D93406
2020-12-16 15:25:45 -05:00
Shivanshu Goyal e53b9f733a Print source location in the error message when parens are missing around sizeof typename and the expression is inside macro expansion
Given the following code:

```
void Foo(int);

void Baz()
{
	Bar(sizeof int);
}
```

The error message which is printed today is this:
```
error: expected parentheses around type name in sizeof expression
```

There is no source location printed whatsoever, so fixing a compile break like this becomes extremely hard in a large codebase.

My change improves the error message. But it doesn't output a FixItHint because I wasn't able to figure out how to get the locations for left and right parens. So any tips would be appreciated.

```
<source>:7:6: error: expected parentheses around type name in sizeof expression
        Bar(sizeof int);
            ^
```

Reviewed By: rsmith

Differential Revision: https://reviews.llvm.org/D91129
2020-12-16 12:03:31 -08:00
Richard Smith 735ab86b81 PR47474: Add test for Clang's current behavior.
Our current behavior rejects the example, following the current language
rules, but it's likely the rules will be revised to allow this example.
2020-12-16 12:01:00 -08:00
Mitch Phillips 30d292ddbb [sanitizer-common] Pickup llvm-symbolizer from $OUT/bin IFF exists.
Fix-forward for D93352.

Slight rework of the same idea, pickup the external symbolizer from the
binary directory iff it exists.
2020-12-16 11:59:10 -08:00
Yaxun (Sam) Liu b9fb063e63 [clang-offload-bundler] Add option -allow-missing-bundles
There are out-of-tree tools using clang-offload-bundler to extract
bundles from bundled files. When a bundle is not in the bundled
file, clang-offload-bundler is expected to emit an error message
and return non-zero value. However currently clang-offload-bundler
silently generates empty file for the missing bundles.

Since OpenMP/HIP toolchains expect the current behavior, an option
-allow-missing-bundles is added to let clang-offload-bundler
create empty file when a bundle is missing when unbundling.
The unbundling job action is updated to use this option by
default.

clang-offload-bundler itself will emit error when a bundle
is missing when unbundling by default.

Changes are also made to check duplicate targets in -targets
option and emit error.

Differential Revision: https://reviews.llvm.org/D93068
2020-12-16 14:52:39 -05:00
Emma Blink 7685d818ef Mark implicit coroutine variables as being implicit
This prevents the clang-tidy readability-identifier-naming check from
triggering on implicit __coro_gro and __promise variables in coroutines.
2020-12-16 14:42:07 -05:00
Eugene Zhulenev 900d71a851 [mlir] Async: re-enable tests after fixing fkakines
Test flakiness was fixed by: 9edcedf7f2

Runs these tests to verify that all parts of the lowering work correctly.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D93384
2020-12-16 11:07:03 -08:00
Eugene Zhulenev 11f1027b4d [mlir] AsyncRuntime: mode runtime declarations to mlir::runtime namespace
Define Async runtime related typedefs in the `mlir::runtime` namespace.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D93391
2020-12-16 11:05:21 -08:00
Peter Steinfeld 4e90cad6a6 [flang] Handle undeclared names in EQUIVALENCE statements
Names in EQUIVALENCE statements are only allowed to indicate local
objects as per 19.5.1.4, paragraph 2, item (10).  Thus, a name appearing
in an EQUIVALENCE statement with no corresponding declaration in the
same scope is an implicit declaration of the name.  If that scope
contains an IMPLICIT NONE, it's an error.

I implemented this by adding a state variable to ScopeHandler to
indicate if we're resolving the names in an EQUIVALENCE statement and
then checked this state when resolving names.  I also added a test to
the existing tests for EQUIVALENCE statements.

Differential Revision: https://reviews.llvm.org/D93345
2020-12-16 11:04:27 -08:00
Jordan Rupprecht 869f8363c4 [lldb][NFC] Apply performance-faster-string-find (`str.find("X")` -> `str.find('x')`) 2020-12-16 10:53:18 -08:00
Florian Hahn 70bd75426e [SimplifyCFG] Precommit test for preserving !annotation. 2020-12-16 18:47:45 +00:00
Fangrui Song 0f10a26dd4 [Go] Fix bindings/go/llvm/IRBindings.cpp 2020-12-16 10:09:58 -08:00
Christian Sigg a79b26db0e [mlir] Fix for gpu-async-region pass.
- the !gpu.async.token is the second result of 'gpu.alloc async', not the first.
- async.execute construction takes operand types not yet wrapped in !async.value.
- fix typo

Reviewed By: herhut

Differential Revision: https://reviews.llvm.org/D93156
2020-12-16 19:08:10 +01:00
LLVM GN Syncbot d5700fdf10 [gn build] Port 6eff12788e 2020-12-16 17:38:06 +00:00
Bardia Mahjour 6eff12788e [DDG] Data Dependence Graph - DOT printer - recommit
This is being recommitted to try and address the MSVC complaint.

This patch implements a DDG printer pass that generates a graph in
the DOT description language, providing a more visually appealing
representation of the DDG. Similar to the CFG DOT printer, this
functionality is provided under an option called -dot-ddg and can
be generated in a less verbose mode under -dot-ddg-only option.

Reviewed By: Meinersbur

Differential Revision: https://reviews.llvm.org/D90159
2020-12-16 12:37:36 -05:00
Mehdi Amini 4bd9e62422 Remove spurious MLIRLLVMConversionsIncGen dependency from LLVM Dialect (NFC)
Reviewed By: ftynse

Differential Revision: https://reviews.llvm.org/D93335
2020-12-16 17:32:49 +00:00
Sanjay Patel aaaf0ec72b [VectorCombine] loosen alignment constraint for load transform
As discussed in D93229, we only need a minimal alignment constraint
when querying whether a hypothetical vector load is safe. We still
pass/use the potentially stronger alignment attribute when checking
costs and creating the new load.

There's already a test that changes with the minimum code change,
so splitting this off as a preliminary commit independent of any
gep/offset enhancements.

Differential Revision: https://reviews.llvm.org/D93397
2020-12-16 12:25:18 -05:00
Fangrui Song 66bcbdbc9c [AArch64InstPrinter] Change printADRPLabel to print the target address in hexadecimal form
Similar to D77853. Change ADRP to print the target address in hex, instead of the raw immediate.
The behavior is similar to GNU objdump but we also include `0x`.

Note: GNU objdump is not consistent whether or not to emit `0x` for different architectures. We try emitting 0x consistently for all targets.

```
GNU objdump:       adrp x16, 10000000
Old llvm-objdump:  adrp x16, #0
New llvm-objdump:  adrp x16, 0x10000000
```

`adrp Xd, 0x...` assembles to a relocation referencing `*ABS*+0x10000` which is not intended. We need to use a linker or use yaml2obj.
The main test is `test/tools/llvm-objdump/ELF/AArch64/pcrel-address.yaml`

Differential Revision: https://reviews.llvm.org/D93241
2020-12-16 09:20:55 -08:00
Esme-Yi 2ea7210e39 Revert "[PowerPC] Extend folding RLWINM + RLWINM to post-RA."
This reverts commit 1c0941e152.
2020-12-16 17:12:24 +00:00
Whitney Tsang fa3693ad0b [LoopNest] Handle loop-nest passes in LoopPassManager
Per http://llvm.org/OpenProjects.html#llvm_loopnest, the goal of this
patch (and other following patches) is to create facilities that allow
implementing loop nest passes that run on top-level loop nests for the
New Pass Manager.

This patch extends the functionality of LoopPassManager to handle
loop-nest passes by specializing the definition of LoopPassManager that
accepts both kinds of passes in addPass.

Only loop passes are executed if L is not a top-level one, and both
kinds of passes are executed if L is top-level. Currently, loop nest
passes should have the following run method:

PreservedAnalyses run(LoopNest &, LoopAnalysisManager &,
LoopStandardAnalysisResults &, LPMUpdater &);

Reviewed By: Whitney, ychen
Differential Revision: https://reviews.llvm.org/D87045
2020-12-16 17:07:14 +00:00
Jon Chesterfield c0619d3b21 [NFC] Use regex for code object version in hip tests
[NFC] Use regex for code object version in hip tests

Extracted from D93258. Makes tests robust to changes in default
code object version.

Reviewed By: t-tye

Differential Revision: https://reviews.llvm.org/D93398
2020-12-16 17:00:19 +00:00
Fangrui Song 16cb7910f5 [ELF] --emit-relocs: fix a crash if .rela.dyn is an empty output section
Fix PR48357: If .rela.dyn appears as an output section description, its type may
be SHT_RELA (due to the empty synthetic .rela.plt) while there is no input
section. The empty .rela.dyn may be retained due to a reference in a linker
script. Don't crash.

Reviewed By: grimar

Differential Revision: https://reviews.llvm.org/D93367
2020-12-16 08:59:38 -08:00
Jon Chesterfield b607837c75 [libomptarget][nfc] Replace static const with enum
[libomptarget][nfc] Replace static const with enum

Semantically identical. Replaces 0xff... with ~0 to spare counting the f.
Has the advantage that the compiler doesn't need to prove the 4/8 byte
value dead before discarding it, and sidesteps the compilation question
associated with what static means for a single source language.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D93328
2020-12-16 16:40:37 +00:00
Jonas Hahnfeld 6e890ec7be [CMake] Avoid __FakeVCSRevision.h with no git repository
Set the return variable to "" in find_first_existing_vc_file to
say that there is a repository, but no file to depend on. This works
transparently for all other callers that handle undefinedness and
equality to an empty string the same way.

Use the knowledge to avoid depending on __FakeVCSRevision.h if there
is no git repository at all (for example when building a release) as
there is no point in regenerating an empty VCSRevision.h.

Differential Revision: https://reviews.llvm.org/D92718
2020-12-16 17:33:20 +01:00
peter klausler 0775131058 [flang] Fix crash in folding (#48437)
Elemental intrinsic function folding was not taking the lower
bounds of constant array arguments into account; these lower bounds
can be distinct from 1 when named constants appear as arguments.

LLVM bugzilla #48437.

Differential Revision: https://reviews.llvm.org/D93321
2020-12-16 07:55:44 -08:00
Kai Nacke e2e86f4e77 [Doc][SystemZ] Add Linux/SystemZ to Getting Started guide.
The Linux/SystemZ platform is missing in the Getting Started guide
as platform on which LLVM is known to work.

Reviewed by: uweigand

Differential Revision: https://reviews.llvm.org/D93388
2020-12-16 10:46:05 -05:00
Florian Hahn 4a6a4e573f
[InstCombine] Precommit tests for !annotation metadata handling. 2020-12-16 15:43:30 +00:00
Matt Arsenault f3e0431b76 LangRef: Update byval/sret description for required types 2020-12-16 10:25:36 -05:00
Tim Keith 7082de56b7 [flang] Handle multiple names for same operator
Some operators have more than one name, e.g. operator(==), operator(.eq).
That was working correctly in generic definitions but they can also
appear in other contexts: USE statements and access statements, for
example.

This changes FindInScope to always look for each of the names for
a symbol. So an operator may be use-associated under one name but
declared private under another name and it will be the same symbol.
This replaces GenericSpecInfo::FindInScope which was only usable in
some cases.

Add a version of FindInScope() that looks in the current scope to
simplify many of the calls.

Differential Revision: https://reviews.llvm.org/D93344
2020-12-16 07:06:55 -08:00
Erik Pilkington 92d6e8001e NFC: balance a quote in AttrDocs.td
This was confusing my editor.
2020-12-16 10:01:24 -05:00
Erik Pilkington 95b2dab199 [Sema] Fix a miscompile by retaining array qualifiers when folding VLAs to constant arrays
rdar://72243125

Differential revision: https://reviews.llvm.org/D93247
2020-12-16 10:01:24 -05:00
Paul C. Anagnostopoulos d61ccda769 [TableGen] Slim down the data structures in xxxGenInstrInfo.inc, step 1 2020-12-16 09:57:43 -05:00
Simon Pilgrim e5039aad45 [X86] Regenerate bit extraction tests, cleaning up check-prefixes.
As noticed on D92965, we needed to simplify the prefixes to ensure all RUNs were properly covered.

We should never have a target with BMI2 without BMI1, so use that as the 'BMI level' and then check with/without TBM (all TBM targets have at least BMI1).
2020-12-16 14:48:21 +00:00
Simon Pilgrim 553808d456 [X86] Rename reduction combiners to make it clearer whats happening. NFCI.
Since these are all working on reduction patterns, actually use that term in the function name to make them easier to search for.

At some point we're likely to start working with the ISD::VECREDUCE_* opcodes directly in the x86 backend, but that is still some way off.
2020-12-16 14:48:21 +00:00
Mitch Phillips 66ee0d3d84 [sanitizer-common] Force pickup of llvm-symbolizer from new binaries.
It's possible currently that the sanitizer runtimes when testing grab
the path to the symbolizer through *SAN_SYMBOLIZER_PATH=...

This can be polluted by things like Android's setup script. This patch
forces external_symbolizer_path=$new_build_out_dir/llvm-symbolizer when
%env_tool_options is used.

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D93352
2020-12-16 06:36:26 -08:00
diggerlin a1e1dcabe4 [XCOFF][AIX] Emit EH information in traceback table
SUMMARY:

In order for the runtime on AIX to find the compact unwind section(EHInfo table),
we would need to set the following on the traceback table:

The 6th byte's longtbtable field to true to signal there is an Extended TB Table Flag.
The Extended TB Table Flag to be 0x08 to signal there is an exception handling info presents.
Emit the offset between ehinfo TC entry and TOC base after all other optional portions of traceback table.

The patch is authored by Jason Liu.

Reviewers: David Tenty, Digger Lin
Differential Revision: https://reviews.llvm.org/D92766
2020-12-16 09:34:59 -05:00