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Craig Topper [Wed, 15 Feb 2017 06:58:47 +0000 (06:58 +0000)]
[X86] Don't create VBROADCAST nodes with 256-bit or 512-bit input types
Summary:
We don't seem to have great rules on what a valid VBROADCAST node looks like. And as a consequence we end up with a lot of patterns to try to catch everything. We have patterns with scalar inputs, 128-bit vector inputs, 256-bit vector inputs, and 512-bit vector inputs.
As you can see from the things improved here we are currently missing patterns for 128-bit loads being extended to 256-bit before the vbroadcast.
I'd like to propose that VBROADCAST should always take a 128-bit vector type as input. As a first step towards that this patch adds an EXTRACT_SUBVECTOR in front of VBROADCAST when the input is 256 or 512-bits. In the future I would like to add scalar_to_vector around all the scalar operations. And maybe we should consider adding a VBROADCAST+load node to avoid separating loads from the broadcasting operation when the load itself isn't foldable.
This requires an additional change in target shuffle combining to look for the extract subvector and look through it to find the original operand. I'm sure this change isn't perfect but was enough to fix a few test failures that were being caused.
Another interesting thing I noticed is that the changes in masked_gather_scatter.ll show cases were we don't remove a useless insert into element 1 before broadcasting element 0.
Reviewers: delena, RKSimon, zvi
Reviewed By: zvi
Subscribers: igorb, llvm-commits
Differential Revision: https://reviews.llvm.org/D28747
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295155
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Craig Topper [Wed, 15 Feb 2017 06:51:39 +0000 (06:51 +0000)]
[AVX-512] Add PACKSS/PACKUS instructions to load folding tables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295154
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Craig Topper [Wed, 15 Feb 2017 05:57:16 +0000 (05:57 +0000)]
[SelectionDAGBuilder] Simplify creation of shufflevector DAG nodes where inputs are larger than the mask
Summary:
The current code loops over all elements to calculate a used range. Then a second short loop looks at the ranges and determines if they can be used in a extract and creates a properly aligned start index for the extract.
This range finding is unnecessary, we can just calculate a properly aligned start index for an extract for each input during the first loop. If we don't find the same start index for each indice we can't use an extract.
Reviewers: zvi, RKSimon
Reviewed By: zvi
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D29926
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295152
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Lang Hames [Wed, 15 Feb 2017 05:39:35 +0000 (05:39 +0000)]
[Orc][RPC] Add a AsyncHandlerTraits specialization for non-value-type response
handler args.
The specialization just inherits from the std::decay'd response handler type.
This allows member functions (via MemberFunctionWrapper) to be used as async
handlers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295151
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Peter Collingbourne [Wed, 15 Feb 2017 03:50:01 +0000 (03:50 +0000)]
AssumptionCache: Update documentation comment.
The comment was somewhat misleading in that it implied that passes were not
responsible for adding new assumptions to the assumption cache. This new
wording now explicitly mentions that they are required to do so.
Differential Revision: https://reviews.llvm.org/D29977
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295148
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Peter Collingbourne [Wed, 15 Feb 2017 03:01:11 +0000 (03:01 +0000)]
SimplifyCFG: Register cloned assume intrinsics with assumption cache when creating critical edge.
Differential Revision: https://reviews.llvm.org/D29976
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295145
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Peter Collingbourne [Wed, 15 Feb 2017 02:13:08 +0000 (02:13 +0000)]
WholeProgramDevirt: Separate the code that applies optzns from the code that decides whether to apply them. NFCI.
The idea is that the apply* functions will also be called when importing
devirt optimizations.
Differential Revision: https://reviews.llvm.org/D29745
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295144
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Rui Ueyama [Wed, 15 Feb 2017 01:48:33 +0000 (01:48 +0000)]
Revert r295138: Instead of a series of string operations, use snprintf().
This broke buildbots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295142
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Rui Ueyama [Wed, 15 Feb 2017 01:09:40 +0000 (01:09 +0000)]
Instead of a series of string operations, use snprintf().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295138
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Rui Ueyama [Wed, 15 Feb 2017 01:09:20 +0000 (01:09 +0000)]
Return early. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295137
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Rui Ueyama [Wed, 15 Feb 2017 01:09:01 +0000 (01:09 +0000)]
Use LLVM-style naming scheme.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295136
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Stanislav Mekhanoshin [Wed, 15 Feb 2017 01:03:59 +0000 (01:03 +0000)]
[AMDGPU] Fix MaxWorkGroupsPerCU for large workgroups
This patch corrects the maximum workgroups per CU if we have big
workgroups (more than 128). This calculation contributes to the
occupancy calculation in respect to LDS size.
Differential Revision: https://reviews.llvm.org/D29974
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295134
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Rui Ueyama [Wed, 15 Feb 2017 00:28:48 +0000 (00:28 +0000)]
Use LLVM-style naming scheme.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295132
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Rui Ueyama [Wed, 15 Feb 2017 00:28:26 +0000 (00:28 +0000)]
Remove useless local variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295131
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Rui Ueyama [Wed, 15 Feb 2017 00:15:54 +0000 (00:15 +0000)]
Split WinCOFFObjectWriter::defineSection. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295128
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Rui Ueyama [Tue, 14 Feb 2017 23:58:19 +0000 (23:58 +0000)]
Simplify WinCOFFObjectWriter by removing a template member function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295126
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Rui Ueyama [Tue, 14 Feb 2017 23:47:34 +0000 (23:47 +0000)]
Do not lookup a DenseMap twice using the same key.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295124
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Rui Ueyama [Tue, 14 Feb 2017 23:28:19 +0000 (23:28 +0000)]
Use endian::write32le instead of endian::write.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295120
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Rui Ueyama [Tue, 14 Feb 2017 23:28:01 +0000 (23:28 +0000)]
Use zero-initialization instead of memset.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295119
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Kostya Serebryany [Tue, 14 Feb 2017 23:02:37 +0000 (23:02 +0000)]
[libFuzzer] increase the size of FixedWord from 27 to 64, see PR31950
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295117
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Dimitry Andric [Tue, 14 Feb 2017 22:49:49 +0000 (22:49 +0000)]
Disable wrapping llvm-xray YAML output
Summary:
The YAML output produced by llvm-xray is supposed to be wrapped at the
arbitrary default of 70 columns set by `yaml:Output`. Unfortunately,
the wrapping is rather unpredictable, and can easily go past the set
number of columns, depending on the execution environment.
To make the YAML output environment-independent, disable wrapping
instead.
Reviewers: dberris
Reviewed By: dberris
Subscribers: fhahn, llvm-commits
Differential Revision: https://reviews.llvm.org/D29962
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295116
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Easwaran Raman [Tue, 14 Feb 2017 22:49:28 +0000 (22:49 +0000)]
Fix a bug in caller's BFI update code after inlining.
Multiple blocks in the callee can be mapped to a single cloned block
since we prune the callee as we clone it. The existing code
iterates over the value map and clones the block frequency (and
eventually scales the frequencies of the cloned blocks). Value map's
iteration is not deterministic and so the cloned block might get the
frequency of any of the original blocks. The fix is to set the max of
the original frequencies to the cloned block. The first block in the
sequence must have this max frequency and, in the call context,
subsequent blocks must have its frequency.
Differential Revision: https://reviews.llvm.org/D29696
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295115
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Kostya Serebryany [Tue, 14 Feb 2017 22:14:36 +0000 (22:14 +0000)]
Use "%zd" format specifier for printing number of testcases executed.
Summary:
This helps to avoid signed integer overflow after running a fast fuzz target for several hours, e.g.:
<...>
Done -
1097903291 runs in 54001 second(s)
Reviewers: kcc
Reviewed By: kcc
Differential Revision: https://reviews.llvm.org/D29941
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295112
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Michael Kuperstein [Tue, 14 Feb 2017 22:14:01 +0000 (22:14 +0000)]
[LV] Rename Induction to PrimaryInduction. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295111
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Peter Collingbourne [Tue, 14 Feb 2017 22:12:23 +0000 (22:12 +0000)]
WholeProgramDevirt: Change internal vcall data structures to match summary.
Group calls into constant and non-constant arguments up front, and use uint64_t
instead of ConstantInt to represent constant arguments. The goal is to allow
the information from the summary to fit naturally into this data structure in
a future change (specifically, it will be added to CallSiteInfo).
This has two side effects:
- We disallow VCP for constant integer arguments of width >64 bits.
- We remove the restriction that the bitwidth of a vcall's argument and return
types must match those of the vfunc definitions.
I don't expect either of these to matter in practice. The first case is
uncommon, and the second one will lead to UB (so we can do anything we like).
Differential Revision: https://reviews.llvm.org/D29744
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295110
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Simon Dardis [Tue, 14 Feb 2017 21:53:23 +0000 (21:53 +0000)]
[mips] Correct mips16 return instructions definitions
Correct the definition of MIPS16 instructions that act as return instructions
so that isReturn = 1 as expected.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295109
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Taewook Oh [Tue, 14 Feb 2017 21:10:40 +0000 (21:10 +0000)]
[BasicBlockUtils] Use getFirstNonPHIOrDbg to set debugloc for instructions created in SplitBlockPredecessors
Summary:
When setting debugloc for instructions created in SplitBlockPredecessors, current implementation copies debugloc from the first-non-phi instruction of the original basic block. However, if the first-non-phi instruction is a call for @llvm.dbg.value, the debugloc of the instruction may point the location outside of the block itself. For the example code of
```
1 typedef struct _node_t {
2 struct _node_t *next;
3 } node_t;
4
5 extern node_t *root;
6
7 int foo() {
8 node_t *node, *tmp;
9 int ret = 0;
10
11 node = tmp = root->next;
12 while (node != root) {
13 while (node) {
14 tmp = node;
15 node = node->next;
16 ret++;
17 }
18 }
19
20 return ret;
21 }
```
, below is the basicblock corresponding to line 12 after Reassociate expressions pass:
```
while.cond: ; preds = %while.cond2, %entry
%node.0 = phi %struct._node_t* [ %1, %entry ], [ null, %while.cond2 ]
%ret.0 = phi i32 [ 0, %entry ], [ %ret.1, %while.cond2 ]
tail call void @llvm.dbg.value(metadata i32 %ret.0, i64 0, metadata !19, metadata !20), !dbg !21
tail call void @llvm.dbg.value(metadata %struct._node_t* %node.0, i64 0, metadata !11, metadata !20), !dbg !31
%cmp = icmp eq %struct._node_t* %node.0, %0, !dbg !33
br i1 %cmp, label %while.end5, label %while.cond2, !dbg !35
```
As you can see, the first-non-phi instruction is a call for @llvm.dbg.value, and the debugloc is
```
!21 = !DILocation(line: 9, column: 7, scope: !6)
```
, which is a definition of 'ret' variable and outside of the scope of the basicblock itself. However, current implementation picks up this debugloc for the instructions created in SplitBlockPredecessors. This patch addresses this problem by picking up debugloc from the first-non-phi-non-dbg instruction.
Reviewers: dblaikie, samsonov, eugenis
Reviewed By: eugenis
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D29867
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295106
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Reid Kleckner [Tue, 14 Feb 2017 21:02:24 +0000 (21:02 +0000)]
[BranchFolding] Tail common all identical unreachable blocks
Summary:
Blocks ending in unreachable are typically cold because they end the
program or throw an exception, so merging them with other identical
blocks is usually profitable because it reduces the size of cold code.
MachineBlockPlacement generally does not arrange to fall through to such
blocks, so commoning these blocks will not introduce additional
unconditional branches.
Reviewers: hans, iteratee, haicheng
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D29153
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295105
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Tim Northover [Tue, 14 Feb 2017 20:56:29 +0000 (20:56 +0000)]
GlobalISel: deal with new G_PTR_MASK instruction on AArch64.
It's just an AND-immediate instruction for us, surprisingly simple to select.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295104
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Tim Northover [Tue, 14 Feb 2017 20:56:18 +0000 (20:56 +0000)]
GlobalISel: introduce G_PTR_MASK to simplify alloca handling.
This instruction clears the low bits of a pointer without requiring (possibly
dodgy if pointers aren't ints) conversions to and from an integer. Since (as
far as I'm aware) all masks are statically known, the instruction takes an
immediate operand rather than a register to specify the mask.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295103
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Vedant Kumar [Tue, 14 Feb 2017 20:03:48 +0000 (20:03 +0000)]
Re-apply "[profiling] Remove dead profile name vars after emitting name data"
This reverts 295092 (re-applies 295084), with a fix for dangling
references from the array of coverage names passed down from frontends.
I missed this in my initial testing because I only checked test/Profile,
and not test/CoverageMapping as well.
Original commit message:
The profile name variables passed to counter increment intrinsics are dead
after we emit the finalized name data in __llvm_prf_nm. However, we neglect to
erase these name variables. This causes huge size increases in the
__TEXT,__const section as well as slowdowns when linker dead stripping is
disabled. Some affected projects are so massive that they fail to link on
Darwin, because only the small code model is supported.
Fix the issue by throwing away the name constants as soon as we're done with
them.
Differential Revision: https://reviews.llvm.org/D29921
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295099
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Eric Christopher [Tue, 14 Feb 2017 19:43:50 +0000 (19:43 +0000)]
Reformat slightly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295096
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Wolfgang Pieb [Tue, 14 Feb 2017 19:08:45 +0000 (19:08 +0000)]
Reapply r294532, reverted in r294787.
Store instructions can have more than one memory operand as a result
of optimizations that fold different stores into one.
When we identify spill instructions to generate DBG_VALUE instructions
to record the spilling of a variable, we disregard stores with
multiple memory operands for now. We may miss some relevant spills but
the handling is a bit more complex, so we'll do it in a different patch.
This fixes PR31935.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295093
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Vedant Kumar [Tue, 14 Feb 2017 19:08:39 +0000 (19:08 +0000)]
Revert "[profiling] Remove dead profile name vars after emitting name data"
This reverts commit r295084. There is a test failure on:
http://lab.llvm.org:8011/builders/clang-atom-d525-fedora-rel/builds/2620/
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295092
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Bob Wilson [Tue, 14 Feb 2017 19:06:43 +0000 (19:06 +0000)]
allow migrating away from cmake option for LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING
In r288754, Mehdi added a cmake option to disable enforcement of the ABI
breaking checks in the "abi-breaking.h" header. We used that when building
Swift and it works, but I think it will be better to control this with a
preprocessor macro instead of a cmake option. That will let us opt out of
the enforcement more selectively.
This change allows skipping the cmake setting if the existing preprocessor
macro is already defined. My intention here is to make this change and get
Swift to use it, and then after a few weeks, we can remove the cmake option.
I want to stage it like that to be less disruptive. I'm not aware of anyone
else using that cmake option.
Mehdi had some initial concern about the impact of using a preprocessor
macro when building with modules enabled. I don't think that will be a
problem if we set the macro on the command line with a -D option in those
contexts where we need to disable the enforcement of the checks.
https://reviews.llvm.org/D29919
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295090
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Zachary Turner [Tue, 14 Feb 2017 19:06:37 +0000 (19:06 +0000)]
[Support] Add StringRef::getAsDouble.
Differential Revision: https://reviews.llvm.org/D29918
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295089
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Vedant Kumar [Tue, 14 Feb 2017 18:48:48 +0000 (18:48 +0000)]
[profiling] Remove dead profile name vars after emitting name data
The profile name variables passed to counter increment intrinsics are
dead after we emit the finalized name data in __llvm_prf_nm. However, we
neglect to erase these name variables. This causes huge size increases
in the __TEXT,__const section as well as slowdowns when linker dead
stripping is disabled. Some affected projects are so massive that they
fail to link on Darwin, because only the small code model is supported.
Fix the issue by throwing away the name constants as soon as we're done
with them.
Differential Revision: https://reviews.llvm.org/D29921
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295084
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Aditya Nandakumar [Tue, 14 Feb 2017 18:32:41 +0000 (18:32 +0000)]
[Tablegen] Instrumenting table gen DAGGenISelDAG
To help assist in debugging ISEL or to prioritize GlobalISel backend
work, this patch adds two more tables to <Target>GenISelDAGISel.inc -
one which contains the patterns that are used during selection and the
other containing include source location of the patterns
Enabled through CMake varialbe LLVM_ENABLE_DAGISEL_COV
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295081
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Adam Nemet [Tue, 14 Feb 2017 18:18:58 +0000 (18:18 +0000)]
[opt-viewer] For single-process, fall back on map instead of Pool.map
This allows for nicer backtrace and debugging when -j1 is passed:
$ opt-viewer.py CMakeFiles/LLVMScalarOpts.dir/LoopVersioningLICM.cpp.opt.yaml html
Traceback (most recent call last):
File "/org/llvm/utils/opt-viewer/opt-viewer.py", line 405, in <module>
generate_report(pmap, all_remarks, file_remarks, args.source_dir, args.output_dir)
File "/org/llvm/utils/opt-viewer/opt-viewer.py", line 362, in generate_report
pmap(_render_file_bound, file_remarks.items())
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/multiprocessing/pool.py", line 251, in map
return self.map_async(func, iterable, chunksize).get()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/multiprocessing/pool.py", line 567, in get
raise self._value
Exception: blah
$ opt-viewer.py -j 1 CMakeFiles/LLVMScalarOpts.dir/LoopVersioningLICM.cpp.opt.yaml html
Traceback (most recent call last):
File "/org/llvm/utils/opt-viewer/opt-viewer.py", line 405, in <module>
generate_report(pmap, all_remarks, file_remarks, args.source_dir, args.output_dir)
File "/org/llvm/utils/opt-viewer/opt-viewer.py", line 362, in generate_report
pmap(_render_file_bound, file_remarks.items())
File "/org/llvm/utils/opt-viewer/opt-viewer.py", line 317, in _render_file
SourceFileRenderer(source_dir, output_dir, filename).render(remarks)
File "/org/llvm/utils/opt-viewer/opt-viewer.py", line 168, in __init__
raise Exception("blah")
Exception: blah
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295080
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Krzysztof Parzyszek [Tue, 14 Feb 2017 17:37:44 +0000 (17:37 +0000)]
[Hexagon] Remove leftover debugging code
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295078
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Taewook Oh [Tue, 14 Feb 2017 17:30:05 +0000 (17:30 +0000)]
Do not apply redundant LastCallToStaticBonus
Summary:
As written in the comments above, LastCallToStaticBonus is already applied to
the cost if Caller has only one user, so it is redundant to reapply the bonus
here.
If the only user is not a caller, TotalSecondaryCost will not be adjusted
anyway because callerWillBeRemoved is false. If there's no caller at all, we
don't need to care about TotalSecondaryCost because
inliningPreventsSomeOuterInline is false.
Reviewers: chandlerc, eraman
Reviewed By: eraman
Subscribers: haicheng, davidxl, davide, llvm-commits, mehdi_amini
Differential Revision: https://reviews.llvm.org/D29169
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295075
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Adam Nemet [Tue, 14 Feb 2017 17:21:12 +0000 (17:21 +0000)]
[LazyBFI] Fix typos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295073
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Adam Nemet [Tue, 14 Feb 2017 17:21:09 +0000 (17:21 +0000)]
Add new pass LazyMachineBlockFrequencyInfo
And use it in MachineOptimizationRemarkEmitter. A test will follow on top of
Justin's changes to enable MachineORE in AsmPrinter.
The approach is similar to the IR-level pass. It's a bit simpler because BPI
is immutable at the Machine level so we don't need to make that lazy.
Because of this, a new function mapping is introduced (BPIPassTrait::getBPI).
This function extracts BPI from the pass. In case of the lazy pass, this is
when the calculation of the BFI occurs. For Machine-level, this is the
identity function.
Differential Revision: https://reviews.llvm.org/D29836
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295072
91177308-0d34-0410-b5e6-
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Adam Nemet [Tue, 14 Feb 2017 17:21:04 +0000 (17:21 +0000)]
[LazyBFI] Split out and templatize LazyBlockFrequencyInfo, NFC
This will be used by the LazyMachineBFI pass.
Differential Revision: https://reviews.llvm.org/D29834
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295071
91177308-0d34-0410-b5e6-
96231b3b80d8
Sanjay Patel [Tue, 14 Feb 2017 16:43:49 +0000 (16:43 +0000)]
fix documentation comments for Argument; NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295068
91177308-0d34-0410-b5e6-
96231b3b80d8
Brian Cain [Tue, 14 Feb 2017 16:41:10 +0000 (16:41 +0000)]
Correct a typo, s/hosting/hoisting/
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295066
91177308-0d34-0410-b5e6-
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Diego Novillo [Tue, 14 Feb 2017 16:39:54 +0000 (16:39 +0000)]
Remove unused variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295065
91177308-0d34-0410-b5e6-
96231b3b80d8
Pavel Labath [Tue, 14 Feb 2017 16:35:56 +0000 (16:35 +0000)]
[Support] Add formatv support for StringLiteral
Summary:
This is achieved by generalizing the expression selecting the StringRef
format_provider. Now, anything that can be converted to a StringRef will
use it's formatter.
Reviewers: zturner
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D29898
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295064
91177308-0d34-0410-b5e6-
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Matthew Simpson [Tue, 14 Feb 2017 16:28:32 +0000 (16:28 +0000)]
Reapply "[LV] Extend trunc optimization to all IVs with constant integer steps"
This reapplies commit r294967 with a fix for the execution time regressions
caught by the clang-cmake-aarch64-quick bot. We now extend the truncate
optimization to non-primary induction variables only if the truncate isn't
already free.
Differential Revision: https://reviews.llvm.org/D29847
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295063
91177308-0d34-0410-b5e6-
96231b3b80d8
Simon Pilgrim [Tue, 14 Feb 2017 16:22:04 +0000 (16:22 +0000)]
[X86][SSE] Allow matchVectorShuffleWithUNPCK to recognise UNDEF inputs
Add support for specifying an UNPCK input as UNDEF
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295061
91177308-0d34-0410-b5e6-
96231b3b80d8
Igor Laevsky [Tue, 14 Feb 2017 15:53:12 +0000 (15:53 +0000)]
[SCEV] Cache results during GetMinTrailingZeros query
Differential Revision: https://reviews.llvm.org/D29759
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295060
91177308-0d34-0410-b5e6-
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Simon Pilgrim [Tue, 14 Feb 2017 15:49:37 +0000 (15:49 +0000)]
[X86][SSE] Add shuffle combine tests showing missed opportunities to use UNPCK
Not correctly using UNDEF or ZERO inputs to combine to UNPCK shuffles
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295059
91177308-0d34-0410-b5e6-
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Simon Pilgrim [Tue, 14 Feb 2017 15:29:50 +0000 (15:29 +0000)]
[X86][SSE] Regenerate intrinsic upgrade tests
Remove excess semicolons
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295058
91177308-0d34-0410-b5e6-
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Alexey Bataev [Tue, 14 Feb 2017 15:20:48 +0000 (15:20 +0000)]
[SLP] Fix for PR31879: vectorize repeated scalar ops that don't get put
back into a vector
Previously the cost of the existing ExtractElement/ExtractValue
instructions was considered as a dead cost only if it was detected that
they have only one use. But these instructions may be considered
dead also if users of the instructions are also going to be vectorized,
like:
```
%x0 = extractelement <2 x float> %x, i32 0
%x1 = extractelement <2 x float> %x, i32 1
%x0x0 = fmul float %x0, %x0
%x1x1 = fmul float %x1, %x1
%add = fadd float %x0x0, %x1x1
```
This can be transformed to
```
%1 = fmul <2 x float> %x, %x
%2 = extractelement <2 x float> %1, i32 0
%3 = extractelement <2 x float> %1, i32 1
%add = fadd float %2, %3
```
because though `%x0` and `%x1` have 2 users each other, these users are
part of the vectorized tree and we can consider these `extractelement`
instructions as dead.
Differential Revision: https://reviews.llvm.org/D29900
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295056
91177308-0d34-0410-b5e6-
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Artyom Skrobov [Tue, 14 Feb 2017 14:44:01 +0000 (14:44 +0000)]
Removing a redundant assignment
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295055
91177308-0d34-0410-b5e6-
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Alexander Timofeev [Tue, 14 Feb 2017 14:29:05 +0000 (14:29 +0000)]
Revert "[AMDGPU] Fix for SIMachineScheduler crash. SI Scheduler should track"
This reverts commit
ce06d9cb99298eb844b66e117f5108a06747c907.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295054
91177308-0d34-0410-b5e6-
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Simon Pilgrim [Tue, 14 Feb 2017 13:47:17 +0000 (13:47 +0000)]
[X86][SSE] Move unary inputs handling inside matchVectorShuffleWithUNPCK.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295053
91177308-0d34-0410-b5e6-
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Simon Pilgrim [Tue, 14 Feb 2017 12:54:39 +0000 (12:54 +0000)]
[X86][SSE] Tidyup matchVectorShuffleWithUNPCK helper function call.
Don't bother setting the V1/V2 operands again for unary shuffles.
Don't bother legalizing the value type unless the match succeeds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295051
91177308-0d34-0410-b5e6-
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Alexey Bataev [Tue, 14 Feb 2017 12:52:05 +0000 (12:52 +0000)]
[SLP] Additional tests for extractelement cost fix.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295050
91177308-0d34-0410-b5e6-
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Simon Pilgrim [Tue, 14 Feb 2017 11:20:11 +0000 (11:20 +0000)]
[X86][SSE] Test case showing missed PSHUFB target shuffle constant fold opportunity.
It also shows an unnecessary pshufb/broadcast being used - the original pshufb mask only requested the lowest byte.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295046
91177308-0d34-0410-b5e6-
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Karl-Johan Karlsson [Tue, 14 Feb 2017 10:06:16 +0000 (10:06 +0000)]
Revert "[LoopVectorize] Added address space check when analysing interleaved accesses"
This reverts r295038. The buildbot clang-with-thin-lto-ubuntu failed.
I'm reverting to investigate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295042
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Karl-Johan Karlsson [Tue, 14 Feb 2017 08:14:06 +0000 (08:14 +0000)]
[LoopVectorize] Added address space check when analysing interleaved accesses
Prevent memory objects of different address spaces to be part of
the same load/store groups when analysing interleaved accesses.
This is fixing pr31900.
Reviewers: HaoLiu, mssimpso, mkuper
Reviewed By: mssimpso, mkuper
Subscribers: llvm-commits, efriedma, mzolotukhin
Differential Revision: https://reviews.llvm.org/D29717
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295038
91177308-0d34-0410-b5e6-
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Karl-Johan Karlsson [Tue, 14 Feb 2017 07:31:36 +0000 (07:31 +0000)]
Test commit permission
Removing whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295037
91177308-0d34-0410-b5e6-
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Daniel Jasper [Tue, 14 Feb 2017 07:10:03 +0000 (07:10 +0000)]
Add initializer that was missed in r295009.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295036
91177308-0d34-0410-b5e6-
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Craig Topper [Tue, 14 Feb 2017 06:54:57 +0000 (06:54 +0000)]
[AVX-512] Add PAVGB/PAVGW to load folding tables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295035
91177308-0d34-0410-b5e6-
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Mikael Holmen [Tue, 14 Feb 2017 06:37:42 +0000 (06:37 +0000)]
[LSR] Pointers with different address spaces are considered incompatible.
Summary:
Function isCompatibleIVType is already used as a guard before the call to
SE.getMinusSCEV(OperExpr, PrevExpr);
in LSRInstance::ChainInstruction. getMinusSCEV requires the expressions
to be of the same type, so we now consider two pointers with different
address spaces to be incompatible, since it is possible that the pointers
in fact have different sizes.
Reviewers: qcolombet, eli.friedman
Reviewed By: qcolombet
Subscribers: nhaehnle, Ka-Ka, llvm-commits, mzolotukhin
Differential Revision: https://reviews.llvm.org/D29885
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295033
91177308-0d34-0410-b5e6-
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Lang Hames [Tue, 14 Feb 2017 05:40:01 +0000 (05:40 +0000)]
[Orc][RPC] Remove lanch policies in favor of async handlers.
Launch policies provided a mechanism for running RPC handlers on a background
thread (unblocking the main RPC receiver thread). Async handlers generalize
this by passing the responder function (the function that sends the RPC return
value) as an argument to the handler. The handler can optionally do its work on
a background thread (the same way launch policies do), but can also (a) can
inspect the call arguments before deciding to run the work on a different
thread, or (b) can use the responder in a subsequent RPC call (e.g. in the
handler of a callAsync), allowing the handler to call back to the originator (or
to a 3rd party) without blocking the listener thread, and without launching a
new thread.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295030
91177308-0d34-0410-b5e6-
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Alex Bradbury [Tue, 14 Feb 2017 05:20:20 +0000 (05:20 +0000)]
[RISCV] Fix RV32 datalayout string and ensure initAsmInfo is called
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295028
91177308-0d34-0410-b5e6-
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Alex Bradbury [Tue, 14 Feb 2017 05:17:23 +0000 (05:17 +0000)]
[RISCV] Pseudo instructions are isCodeGenOnly, have blank asmstr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295027
91177308-0d34-0410-b5e6-
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Alex Bradbury [Tue, 14 Feb 2017 05:15:24 +0000 (05:15 +0000)]
[RISCV] Fix unused variable in RISCVMCTargetDesc. NFC
Also, for better uniformity use TargetRegistry::RegisterMCAsmInfo rather than
RegisterMCAsmInfoFn. Again, no functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295026
91177308-0d34-0410-b5e6-
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Peter Collingbourne [Tue, 14 Feb 2017 03:42:38 +0000 (03:42 +0000)]
ThinLTOBitcodeWriter: Write available_externally copies of VCP eligible functions to merged module.
Differential Revision: https://reviews.llvm.org/D29701
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295021
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Mehdi Amini [Tue, 14 Feb 2017 02:20:51 +0000 (02:20 +0000)]
[ThinLTO] Make a copy of buffer identifier in ThinLTOCodeGenerator
We can't assume that the `const char *` provided through libLTO has a
lifetime that expands beyond the codegenerator itself.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295018
91177308-0d34-0410-b5e6-
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Philip Reames [Tue, 14 Feb 2017 01:38:31 +0000 (01:38 +0000)]
[LICM] Make store promotion work in the face of unordered atomics
Extend our store promotion code to deal with unordered atomic accesses. Ordered atomics continue to be unhandled.
Most of the change is straight-forward, the only complicated bit is in the reasoning around mixing of atomic and non-atomic memory access. Rather than trying to reason about the complex semantics in these cases, I simply disallowed promotion when both atomic and non-atomic accesses are present. This is conservatively correct.
It seems really tempting to just promote all access to atomics, but the original accesses might have been conditional. Since we can't lower an arbitrary atomic type, it might not be safe to promote all access to atomic. Consider a loop like the following:
while(b) {
load i128 ...
if (can lower i128 atomic)
store atomic i128 ...
else
store i128
}
It could be there's no race on the location and thus the code is perfectly well defined even if we can't lower a i128 atomically.
It's not clear we need to be this conservative - arguably the program above is brocken since it can't be lowered unless the branch is folded - but I didn't want to have to fix any fallout which might result.
Differential Revision: https://reviews.llvm.org/D15592
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295015
91177308-0d34-0410-b5e6-
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Reid Kleckner [Tue, 14 Feb 2017 01:38:14 +0000 (01:38 +0000)]
Undef MemoryFence, which is defined to _mm_mfence by winnt.h
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295014
91177308-0d34-0410-b5e6-
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Reid Kleckner [Tue, 14 Feb 2017 01:21:39 +0000 (01:21 +0000)]
Use std::call_once on Windows
Previously we could not use it because std::once_flag's default
constructor was not constexpr. Today, all supported versions of VS
correctly mark it constexpr. I confirmed that MSVC 2015 does not emit
any problematic racy dynamic initialization code, so we should be safe
to use this now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295013
91177308-0d34-0410-b5e6-
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Eugene Zelenko [Tue, 14 Feb 2017 00:33:36 +0000 (00:33 +0000)]
[MC] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC).
Same changes in files affected by reduced MC headers dependencies.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295009
91177308-0d34-0410-b5e6-
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Peter Collingbourne [Tue, 14 Feb 2017 00:28:13 +0000 (00:28 +0000)]
FunctionAttrs: Factor out a function for querying memory access of a specific copy of a function. NFC.
This will later be used by ThinLTOBitcodeWriter to add copies of readnone
functions to the regular LTO module.
Differential Revision: https://reviews.llvm.org/D29695
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295008
91177308-0d34-0410-b5e6-
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Michael Kuperstein [Mon, 13 Feb 2017 23:42:27 +0000 (23:42 +0000)]
Silence redundant semicolon warnings. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295005
91177308-0d34-0410-b5e6-
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Andrew Kaylor [Mon, 13 Feb 2017 23:38:52 +0000 (23:38 +0000)]
[X86] Add MXCSR register
This adds MXCSR to the set of recognized registers for X86 targets and updates the instructions that read or write it. I do not intend for all of the various floating point instructions that implicitly use the control bits or update the status bits of this register to ever have that usage modeled by default. However, when constrained floating point modes (such as strict FP exception status modeling or dynamic rounding modes) are enabled, implicit use/def information for MXCSR will be added to those instructions.
Until those additional updates are made this should cause (almost?) no functional changes. Theoretically, this will prevent instructions like LDMXCSR and STMXCSR from being moved past one another, but that should be prevented anyway and I haven't found a case where it is happening now.
Differential Revision: https://reviews.llvm.org/D29903
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295004
91177308-0d34-0410-b5e6-
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Sanjoy Das [Mon, 13 Feb 2017 23:19:07 +0000 (23:19 +0000)]
[LangRef] Explicitly allow readnone and reaodnly functions to unwind
Summary:
This change edits the language reference to explicitly allow the
existence of readnone and readonly functions that can throw. Full
discussion at
http://lists.llvm.org/pipermail/llvm-dev/2017-January/108637.html
Reviewers: dberlin, chandlerc, hfinkel, majnemer
Reviewed By: majnemer
Subscribers: majnemer, mcrosier, llvm-commits
Differential Revision: https://reviews.llvm.org/D28740
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295000
91177308-0d34-0410-b5e6-
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Sanjoy Das [Mon, 13 Feb 2017 23:14:03 +0000 (23:14 +0000)]
[LangRef] Update the TBAA section
Summary:
Update the TBAA section to mention the struct path TBAA that LLVM
implements today. This is not a proposal or change in semantics -- it
is intended only to **document** what LLVM already does today.
This is related to https://reviews.llvm.org/D26438 where I've tried to
implement some of the constraints as verifier checks.
Reviewers: anna, reames, rsmith, chandlerc, hfinkel, rjmccall, mehdi_amini, dexonsmith, manmanren
Reviewed By: manmanren
Subscribers: dberlin, dberris, mcrosier, llvm-commits
Differential Revision: https://reviews.llvm.org/D26831
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294999
91177308-0d34-0410-b5e6-
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Sanjay Patel [Mon, 13 Feb 2017 23:10:51 +0000 (23:10 +0000)]
[FunctionAttrs] try to extend nonnull-ness of arguments from a callsite back to its parent function
As discussed here:
http://lists.llvm.org/pipermail/llvm-dev/2016-December/108182.html
...we should be able to propagate 'nonnull' info from a callsite back to its parent.
The original motivation for this patch is our botched optimization of "dyn_cast" (PR28430),
but this won't solve that problem.
The transform is currently disabled by default while we wait for clang to work-around
potential security problems:
http://lists.llvm.org/pipermail/cfe-dev/2017-January/052066.html
Differential Revision: https://reviews.llvm.org/D27855
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294998
91177308-0d34-0410-b5e6-
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Amaury Sechet [Mon, 13 Feb 2017 23:00:23 +0000 (23:00 +0000)]
Revert autogenerated check result for test/CodeGen/X86/atomic-minmax-i6432.ll as they don't regenerate cleanly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294996
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Tim Northover [Mon, 13 Feb 2017 22:14:16 +0000 (22:14 +0000)]
GlobalISel: represent atomic loads & stores via the MachineMemOperand.
Also make sure the AArch64 backend doesn't try to convert them into normal
loads and stores.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294993
91177308-0d34-0410-b5e6-
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Tim Northover [Mon, 13 Feb 2017 22:14:08 +0000 (22:14 +0000)]
MIR: parse & print the atomic parts of a MachineMemOperand.
We're going to need them very soon for GlobalISel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294992
91177308-0d34-0410-b5e6-
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Reid Kleckner [Mon, 13 Feb 2017 21:33:26 +0000 (21:33 +0000)]
[CodeGen] Use bitfields instead of manual masks in ArgFlagsTy, NFC
This revealed that we actually have 8 more unused flag bits, and byval
size doesn't need to be a bitfield at all.
This came up during code review here:
https://reviews.llvm.org/D29668#inline-258469
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294989
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Taewook Oh [Mon, 13 Feb 2017 21:12:27 +0000 (21:12 +0000)]
Address post-commit comments for https://reviews.llvm.org/D29596. NFCI.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294985
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Arnold Schwaighofer [Mon, 13 Feb 2017 19:58:28 +0000 (19:58 +0000)]
swiftcc: Don't emit tail calls from callers with swifterror parameters
Backends don't support this yet. They would have to move to the swifterror
register before the tail call to make sure it is live-in to the call.
rdar://
30495920
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294982
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Peter Collingbourne [Mon, 13 Feb 2017 19:26:18 +0000 (19:26 +0000)]
IR: Type ID summary extensions for WPD; thread summary into WPD pass.
Make the whole thing testable by adding YAML I/O support for the WPD
summary information and adding some negative tests that exercise the
YAML support.
Differential Revision: https://reviews.llvm.org/D29782
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294981
91177308-0d34-0410-b5e6-
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Alexey Bataev [Mon, 13 Feb 2017 19:08:19 +0000 (19:08 +0000)]
[SLP] Test for extractelement cost fix.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294980
91177308-0d34-0410-b5e6-
96231b3b80d8
Taewook Oh [Mon, 13 Feb 2017 18:15:31 +0000 (18:15 +0000)]
Make MachineBasicBlock::updateTerminator to update DebugLoc as well
Summary:
Currently MachineBasicBlock::updateTerminator simply drops DebugLoc for newly created branch instructions, which may cause incorrect stepping and/or imprecise sample profile data. Below is an example:
```
1 extern int bar(int x);
2
3 int foo(int *begin, int *end) {
4 int *i;
5 int ret = 0;
6 for (
7 i = begin ;
8 i != end ;
9 i++)
10 {
11 ret += bar(*i);
12 }
13 return ret;
14 }
```
Below is a bitcode of 'foo' at the end of LLVM-IR level optimizations with -O3:
```
define i32 @foo(i32* readonly %begin, i32* readnone %end) !dbg !4 {
entry:
%cmp6 = icmp eq i32* %begin, %end, !dbg !9
br i1 %cmp6, label %for.end, label %for.body.preheader, !dbg !12
for.body.preheader: ; preds = %entry
br label %for.body, !dbg !13
for.body: ; preds = %for.body.preheader, %for.body
%ret.08 = phi i32 [ %add, %for.body ], [ 0, %for.body.preheader ]
%i.07 = phi i32* [ %incdec.ptr, %for.body ], [ %begin, %for.body.preheader ]
%0 = load i32, i32* %i.07, align 4, !dbg !13, !tbaa !15
%call = tail call i32 @bar(i32 %0), !dbg !19
%add = add nsw i32 %call, %ret.08, !dbg !20
%incdec.ptr = getelementptr inbounds i32, i32* %i.07, i64 1, !dbg !21
%cmp = icmp eq i32* %incdec.ptr, %end, !dbg !9
br i1 %cmp, label %for.end.loopexit, label %for.body, !dbg !12, !llvm.loop !22
for.end.loopexit: ; preds = %for.body
br label %for.end, !dbg !24
for.end: ; preds = %for.end.loopexit, %entry
%ret.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.end.loopexit ]
ret i32 %ret.0.lcssa, !dbg !24
}
```
where
```
!12 = !DILocation(line: 6, column: 3, scope: !11)
```
. As you can see, the terminator of 'entry' block, which is a loop control branch, has a DebugLoc of line 6, column 3. Howerver, after the execution of 'MachineBlock::updateTerminator' function, which is triggered by MachineSinking pass, the DebugLoc info is dropped as below (see there's no debug-location for JNE_1):
```
bb.0.entry:
successors: %bb.4(0x30000000), %bb.1.for.body.preheader(0x50000000)
liveins: %rdi, %rsi
%6 = COPY %rsi
%5 = COPY %rdi
%8 = SUB64rr %5, %6, implicit-def %eflags, debug-location !9
JNE_1 %bb.1.for.body.preheader, implicit %eflags
```
This patch addresses this issue and make newly created branch instructions to keep debug-location info.
Reviewers: aprantl, MatzeB, craig.topper, qcolombet
Reviewed By: qcolombet
Subscribers: qcolombet, llvm-commits
Differential Revision: https://reviews.llvm.org/D29596
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294976
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Matthew Simpson [Mon, 13 Feb 2017 18:02:35 +0000 (18:02 +0000)]
Revert "[LV] Extend trunc optimization to all IVs with constant integer steps"
This reverts commit r294967. This patch caused execution time slowdowns in a
few LLVM test-suite tests, as reported by the clang-cmake-aarch64-quick bot.
I'm reverting to investigate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294973
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Quentin Colombet [Mon, 13 Feb 2017 17:38:59 +0000 (17:38 +0000)]
[FastISel] Add a diagnostic to warm on fallback.
This is consistent with what we do for GlobalISel. That way, it is easy
to see whether or not FastISel is able to fully select a function.
At some point we may want to switch that to an optimization remark.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294970
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James Molloy [Mon, 13 Feb 2017 17:18:00 +0000 (17:18 +0000)]
[ARM] Fix crash caused by r294945
I'd missed a creator of FCMP nodes - duplicateCmp().
Kindly and promptly reported by Gabor Ballabas, due to his CSiBE test suite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294968
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Matthew Simpson [Mon, 13 Feb 2017 16:48:00 +0000 (16:48 +0000)]
[LV] Extend trunc optimization to all IVs with constant integer steps
This patch extends the optimization of truncations whose operand is an
induction variable with a constant integer step. Previously we were only
applying this optimization to the primary induction variable. However, the cost
model assumes the optimization is applied to the truncation of all integer
induction variables (even regardless of step type). The transformation is now
applied to the other induction variables, and I've updated the cost model to
ensure it is better in sync with the transformation we actually perform.
Differential Revision: https://reviews.llvm.org/D29847
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294967
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Simon Dardis [Mon, 13 Feb 2017 16:42:35 +0000 (16:42 +0000)]
[mips] Fix failing test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294966
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Sanjay Patel [Mon, 13 Feb 2017 16:17:29 +0000 (16:17 +0000)]
fix documentation comments; NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294964
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Davide Italiano [Mon, 13 Feb 2017 16:08:36 +0000 (16:08 +0000)]
[llvm-lto2] Fix typo spotted by Teresa (r294885 post-commit review).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294962
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Simon Dardis [Mon, 13 Feb 2017 16:06:48 +0000 (16:06 +0000)]
[mips] divide macro instruction cleanup.
Clean up the implementation of divide macro expansion by getting rid of a
FIXME regarding magic numbers and branch instructions. Match GAS' behaviour
for expansion of ddiv / div in the two and three operand cases. Add the two
operand alias for MIPSR6. Finally, optimize macro expansion cases where the
divisior is the $zero register.
Reviewers: slthakur
Differential Revision: https://reviews.llvm.org/D29887
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294960
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Simon Pilgrim [Mon, 13 Feb 2017 15:31:08 +0000 (15:31 +0000)]
Fix indentation. NFCI.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294959
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