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5 years ago[HotColdSplit] Calculate BFI lazily to reduce compile-time, NFC
Vedant Kumar [Tue, 22 Jan 2019 22:49:22 +0000 (22:49 +0000)]
[HotColdSplit] Calculate BFI lazily to reduce compile-time, NFC

The splitting pass does not need BFI unless the Module actually has a profile
summary. Do not calcualte BFI unless the summary is present.

For the sqlite3 amalgamation, this reduces time spent in the splitting pass
from 0.4% of the total to under 0.1%.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351894 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[Chrono] Remove ATTRIBUTE_ALWAYS inline from Chrono.h.
Davide Italiano [Tue, 22 Jan 2019 22:49:19 +0000 (22:49 +0000)]
[Chrono] Remove ATTRIBUTE_ALWAYS inline from Chrono.h.

I discussed this with Pavel, who told me there was no real
thought behind this, and had no objection to remove the
attributes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351893 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[HotColdSplit] Calculate domtrees lazily to reduce compile-time, NFC
Vedant Kumar [Tue, 22 Jan 2019 22:49:08 +0000 (22:49 +0000)]
[HotColdSplit] Calculate domtrees lazily to reduce compile-time, NFC

The splitting pass does not need (post)domtrees until after it's found a
cold block. Defer domtree calculation until a cold block is found.

For the sqlite3 amalgamation, this reduces time spent in the splitting
pass from 0.8% of the total to 0.4%.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351892 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[ADT] Move away from __attribute__((always_inline)).
Davide Italiano [Tue, 22 Jan 2019 22:40:35 +0000 (22:40 +0000)]
[ADT] Move away from __attribute__((always_inline)).

Some member functions of StringRef/SmallVector/StringSwitch
are marked with the `always_inline` attribute. The result
is that  the body of these functions is not emitted, hence the
debugger can't evaluate them (a typical example is
StringRef::size()), even if the code is built with `-O0`.

The main driver behind this was that of getting faster turnaround
when running `check-llvm`. A previous commit clarifies how to
get good performance when running the testsuite, so we can
get rid of the attribute here.

An alternative approach considered was that of using attribute `used`,
but in the end we preferred to not slap yet another attribute on
these functions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351891 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[LegalizeTypes] Add debug prints to the top of PromoteFloatOperand and PromoteFloatRe...
Craig Topper [Tue, 22 Jan 2019 22:33:55 +0000 (22:33 +0000)]
[LegalizeTypes] Add debug prints to the top of PromoteFloatOperand and PromoteFloatResult.

Also add debug prints in the default case of the switches in these routines.

Most if not all of the type legalization handlers already do this so this makes promoting floats consistent

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351890 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoAMDGPU/GlobalISel: Start selectively legalizing 16-bit operations
Matt Arsenault [Tue, 22 Jan 2019 22:00:19 +0000 (22:00 +0000)]
AMDGPU/GlobalISel: Start selectively legalizing 16-bit operations

It might be a bit nicer to use the fancy .legalIf and co. predicates,
but this was requiring more boilerplate and disables the coverage
assertions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351886 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[Docs] Add a note clarifying how to get good test performances.
Davide Italiano [Tue, 22 Jan 2019 21:52:50 +0000 (21:52 +0000)]
[Docs] Add a note clarifying how to get good test performances.

Differential Revision:  https://reviews.llvm.org/D56337

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351885 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoAMDGPU/GlobalISel: Handle legality/regbanks for 32/64-bit shifts
Matt Arsenault [Tue, 22 Jan 2019 21:51:38 +0000 (21:51 +0000)]
AMDGPU/GlobalISel: Handle legality/regbanks for 32/64-bit shifts

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351884 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoFileOutputBuffer: handle mmap(2) failure
Rui Ueyama [Tue, 22 Jan 2019 21:49:56 +0000 (21:49 +0000)]
FileOutputBuffer: handle mmap(2) failure

If the underlying filesystem does not support mmap system call,
FileOutputBuffer may fail when it attempts to mmap an output temporary
file. This patch handles such situation.

Unfortunately, it looks like it is very hard to test this functionality
without a filesystem that doesn't support mmap using llvm-lit. I tested
this locally by passing an invalid parameter to mmap so that it fails and
falls back to the in-memory buffer. Maybe that's all what we can do.
I believe it is reasonable to submit this without a test.

Differential Revision: https://reviews.llvm.org/D56949

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351883 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoGlobalISel: Allow shift amount to be a different type
Matt Arsenault [Tue, 22 Jan 2019 21:42:11 +0000 (21:42 +0000)]
GlobalISel: Allow shift amount to be a different type

For AMDGPU the shift amount is never 64-bit, and
this needs to use a 32-bit shift.

X86 uses i8, but seemed to be hacking around this before.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351882 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[FileCheck] Suppress old -v/-vv diags if dumping input
Joel E. Denny [Tue, 22 Jan 2019 21:41:42 +0000 (21:41 +0000)]
[FileCheck] Suppress old -v/-vv diags if dumping input

The old diagnostic form of the trace produced by -v and -vv looks
like:

```
check1:1:8: remark: CHECK: expected string found in input
CHECK: abc
       ^
<stdin>:1:3: note: found here
; abc def
  ^~~
```

When dumping annotated input is requested (via -dump-input), I find
that this old trace is not useful and is sometimes harmful:

1. The old trace is mostly redundant because the same basic
   information also appears in the input dump's annotations.

2. The old trace buries any error diagnostic between it and the input
   dump, but I find it useful to see any error diagnostic up front.

3. FILECHECK_OPTS=-dump-input=fail requests annotated input dumps only
   for failed FileCheck calls.  However, I have to also add -v or -vv
   to get a full set of annotations, and that can produce massive
   output from all FileCheck calls in all tests.  That's a real
   problem when I run this in the IDE I use, which grinds to a halt as
   it tries to capture all that output.

When -dump-input=fail|always, this patch suppresses the old trace from
-v or -vv.  Error diagnostics still print as usual.  If you want the
old trace, perhaps to see variable expansions, you can set
-dump-input=none (the default).

Reviewed By: probinson

Differential Revision: https://reviews.llvm.org/D55825

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351881 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoGlobalISel: Make buildConstant handle vectors
Matt Arsenault [Tue, 22 Jan 2019 21:31:02 +0000 (21:31 +0000)]
GlobalISel: Make buildConstant handle vectors

Produce a splat build_vector similar to how
SelectionDAG::getConstant does.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351880 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86][AVX512F_SCALAR]: Adding full coverage of MC encoding for the AVX512F_SCALAR...
Craig Topper [Tue, 22 Jan 2019 20:48:24 +0000 (20:48 +0000)]
[X86][AVX512F_SCALAR]: Adding full coverage of MC encoding for the AVX512F_SCALAR isa sets. NFC

Adding MC regressions tests to cover the AVX512F_SCALAR isa sets.
This patch is part of a larger task to cover MC encoding of all X86 isa sets started in revision: https://reviews.llvm.org/D39952

Differential Revision: https://reviews.llvm.org/D41174

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351874 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoGlobalISel: Implement widen for extract_vector_elt elt type
Matt Arsenault [Tue, 22 Jan 2019 20:38:15 +0000 (20:38 +0000)]
GlobalISel: Implement widen for extract_vector_elt elt type

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351871 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoGlobalISel: Implement fewerElementsVector for basic FP ops
Matt Arsenault [Tue, 22 Jan 2019 20:14:29 +0000 (20:14 +0000)]
GlobalISel: Implement fewerElementsVector for basic FP ops

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351866 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoAdd missing include (cstdlib) to Demangle.h
Konstantin Zhuravlyov [Tue, 22 Jan 2019 19:18:18 +0000 (19:18 +0000)]
Add missing include (cstdlib) to Demangle.h

Differential Revision: https://reviews.llvm.org/D57035

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351861 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoAMDGPU/GlobalISel: Remove vectors from legal constant types
Matt Arsenault [Tue, 22 Jan 2019 19:04:51 +0000 (19:04 +0000)]
AMDGPU/GlobalISel: Remove vectors from legal constant types

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351859 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoGlobalISel: Support narrowing zextload/sextload
Matt Arsenault [Tue, 22 Jan 2019 19:02:10 +0000 (19:02 +0000)]
GlobalISel: Support narrowing zextload/sextload

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351856 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[SelectionDAGBuilder] Defer C_Register Assignments to be in line with
Nirav Dave [Tue, 22 Jan 2019 18:57:49 +0000 (18:57 +0000)]
[SelectionDAGBuilder] Defer C_Register Assignments to be in line with
those of C_RegisterClass. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351854 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoGlobalISel: Disallow vectors for G_CONSTANT/G_FCONSTANT
Matt Arsenault [Tue, 22 Jan 2019 18:53:41 +0000 (18:53 +0000)]
GlobalISel: Disallow vectors for G_CONSTANT/G_FCONSTANT

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351853 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoFileOutputBuffer: Handle "-" as stdout.
Rui Ueyama [Tue, 22 Jan 2019 18:44:04 +0000 (18:44 +0000)]
FileOutputBuffer: Handle "-" as stdout.

I was honestly a bit surprised that we didn't do this before. This
patch is to handle "-" as the stdout so that if you pass `-o -` to
lld, for example, it writes an output to stdout instead of file `-`.

I thought that we might want to handle this at a higher level than
FileOutputBuffer, because if we land this patch, we can no longer
create a file whose name is `-` (there's a workaround though; you can
pass `./-` instead of `-`). However, because raw_fd_ostream already
handles `-` as a special file name, I think it's okay and actually
consistent to handle `-` as a special name in FileOutputBuffer.

Differential Revision: https://reviews.llvm.org/D56940

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351852 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoCodegen support for atomicrmw fadd/fsub
Matt Arsenault [Tue, 22 Jan 2019 18:36:06 +0000 (18:36 +0000)]
Codegen support for atomicrmw fadd/fsub

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351851 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoReapply "IR: Add fp operations to atomicrmw"
Matt Arsenault [Tue, 22 Jan 2019 18:18:02 +0000 (18:18 +0000)]
Reapply "IR: Add fp operations to atomicrmw"

This reapplies commits r351778 and r351782 with
RISCV test fixes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351850 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[llvm-mca][X86] Tidyup avx512 placeholder tests
Simon Pilgrim [Tue, 22 Jan 2019 17:52:15 +0000 (17:52 +0000)]
[llvm-mca][X86] Tidyup avx512 placeholder tests

Ensure we keep avx512f/bw/dq + vl versions separate, add example broadcast tests - this should allow us to better the test coverage of test\CodeGen\X86\avx512-schedule.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351848 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[DEBUGINFO, NVPTX] Enable support for the debug info on NVPTX target.
Alexey Bataev [Tue, 22 Jan 2019 17:43:37 +0000 (17:43 +0000)]
[DEBUGINFO, NVPTX] Enable support for the debug info on NVPTX target.

Summary: Enable full support for the debug info.

Reviewers: echristo

Subscribers: jholewinski, aprantl, JDevlieghere, llvm-commits

Differential Revision: https://reviews.llvm.org/D46189

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351846 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoRevert r351520, "Re-enable terminator folding in LoopSimplifyCFG"
Jordan Rupprecht [Tue, 22 Jan 2019 17:39:02 +0000 (17:39 +0000)]
Revert r351520, "Re-enable terminator folding in LoopSimplifyCFG"

This is still causing compilation crashes in some targets. Will follow up shortly with a repro.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351845 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[DEBUG_INFO, NVPTX] Fix relocation info.
Alexey Bataev [Tue, 22 Jan 2019 17:24:16 +0000 (17:24 +0000)]
[DEBUG_INFO, NVPTX] Fix relocation info.

Summary: Initial function labels must follow the debug location for the correct relocation info generation.

Reviewers: tra, jlebar, echristo

Subscribers: jholewinski, llvm-commits

Differential Revision: https://reviews.llvm.org/D45784

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351843 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[llvm-mca][X86] Add VPOPCNTDQ tests
Simon Pilgrim [Tue, 22 Jan 2019 17:19:44 +0000 (17:19 +0000)]
[llvm-mca][X86] Add VPOPCNTDQ tests

Matches test coverage of test\CodeGen\X86\avx512vpopcntdq-schedule.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351842 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[x86] add partial undef 'and' test; NFC
Sanjay Patel [Tue, 22 Jan 2019 17:01:06 +0000 (17:01 +0000)]
[x86] add partial undef 'and' test; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351840 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[docs] Scudo: document error messages & their potential cause
Kostya Kortchinsky [Tue, 22 Jan 2019 16:43:45 +0000 (16:43 +0000)]
[docs] Scudo: document error messages & their potential cause

Summary:
A couple of changes in the Scudo documentation:
- tag the shell code blocks as `console`;
- document error messages that are displayed in some termination conditions,
  the reason they triggered, and potential causes.

Reviewers: eugenis, enh

Reviewed By: eugenis

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D56857

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351838 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoAdd DIGlobalVariableExpression to LangRef
Adrian Prantl [Tue, 22 Jan 2019 16:40:18 +0000 (16:40 +0000)]
Add DIGlobalVariableExpression to LangRef

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351837 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[llvm-mca][X86] Add missing CLWB/CLZERO/FSGSBASE/LWP/MWAITX/RDPID/SHA tests
Simon Pilgrim [Tue, 22 Jan 2019 16:39:28 +0000 (16:39 +0000)]
[llvm-mca][X86] Add missing CLWB/CLZERO/FSGSBASE/LWP/MWAITX/RDPID/SHA tests

We're getting pretty close to matching/exceeding test coverage of the test\CodeGen\X86\*-schedule.ll files, which should allow us to get rid of -print-schedule and fix PR37160

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351836 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[llvm-mca][X86] Add missing enter/leave, invlpg/invlpga, rdmsr/wrmsr, rdpmc and rdtsc...
Simon Pilgrim [Tue, 22 Jan 2019 16:29:26 +0000 (16:29 +0000)]
[llvm-mca][X86] Add missing enter/leave, invlpg/invlpga, rdmsr/wrmsr, rdpmc and rdtsc/rdtscp tests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351835 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[x86] add another partial undef vector binop test; NFC
Sanjay Patel [Tue, 22 Jan 2019 16:26:09 +0000 (16:26 +0000)]
[x86] add another partial undef vector binop test; NFC

The existing test unintentionally shows that we have prematurely
optimized the shuffle into a vector concat and lost the undef info,
so it is not affected by a basic improvement to
SimplifyDemandedVectorElts.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351834 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoUse response file when generating LLVM-C.dll
Serge Guelton [Tue, 22 Jan 2019 16:25:17 +0000 (16:25 +0000)]
Use response file when generating LLVM-C.dll

As discovered in D56774 the command line gets to long, so use a response file to give the script the libs. This change has been tested and is confirmed working for me.

Commited on behalf of Jakob Bornecrantz

Differential Revision: https://reviews.llvm.org/D56781

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351833 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[llvm-mca][X86] Add missing mfence/pinsrw tests
Simon Pilgrim [Tue, 22 Jan 2019 16:01:08 +0000 (16:01 +0000)]
[llvm-mca][X86] Add missing mfence/pinsrw tests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351831 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[llvm-mca][X86] Add missing monitor/mwait tests
Simon Pilgrim [Tue, 22 Jan 2019 15:48:16 +0000 (15:48 +0000)]
[llvm-mca][X86] Add missing monitor/mwait tests

These technically should be under a MONITOR cpuid bit, but we tag them as SSE3 so I've done that here as well.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351829 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[llvm-mca][X86] Add missing vperm2i128 tests
Simon Pilgrim [Tue, 22 Jan 2019 14:54:24 +0000 (14:54 +0000)]
[llvm-mca][X86] Add missing vperm2i128 tests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351828 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[llvm-mca][X86] Add missing tzcntw tests
Simon Pilgrim [Tue, 22 Jan 2019 14:53:52 +0000 (14:53 +0000)]
[llvm-mca][X86] Add missing tzcntw tests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351827 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[DAGCombiner] narrow vector binop with 2 insert subvector operands
Sanjay Patel [Tue, 22 Jan 2019 14:24:13 +0000 (14:24 +0000)]
[DAGCombiner] narrow vector binop with 2 insert subvector operands

vecbo (insertsubv undef, X, Z), (insertsubv undef, Y, Z) --> insertsubv VecC, (vecbo X, Y), Z

This is another step in generic vector narrowing. It's also a step towards more horizontal op
formation specifically for x86 (although we still failed to match those in the affected tests).

The scalarization cases are also not optimal (we should be scalarizing those), but it's still
an improvement to use a narrower vector op when we know part of the result must be constant
because both inputs are undef in some vector lanes.

I think a similar match but checking for a constant operand might help some of the cases in
D51553.

Differential Revision: https://reviews.llvm.org/D56875

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351825 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[llvm-objdump] - Introduce getRelocsMap() helper. NFCI.
George Rimar [Tue, 22 Jan 2019 14:09:37 +0000 (14:09 +0000)]
[llvm-objdump] - Introduce getRelocsMap() helper. NFCI.

Currently disassembleObject() is a ~550 lines length function.
This patch extracts the code that creates a section->their relocation
mapping into a new helper function to simplify/reduce it a bit.

Differential revision: https://reviews.llvm.org/D57019

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351824 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[RISCV][NFC] Change naming scheme for RISC-V specific DAG nodes
Alex Bradbury [Tue, 22 Jan 2019 14:05:11 +0000 (14:05 +0000)]
[RISCV][NFC] Change naming scheme for RISC-V specific DAG nodes

Previously we had names like 'Call' or 'Tail'. This potentially clashes with
the naming scheme used elsewhere in RISCVInstrInfo.td. Many other backends
would use names like AArch64call or PPCtail. I prefer the SystemZ approach,
which uses prefixed all-lowercase names. This matches the naming scheme used
for target-independent SelectionDAG nodes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351823 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[MCA] Add tests for int-to-fpu transfer delays. NFC
Andrea Di Biagio [Tue, 22 Jan 2019 13:59:08 +0000 (13:59 +0000)]
[MCA] Add tests for int-to-fpu transfer delays. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351822 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoSlight fix for r351820
Serge Guelton [Tue, 22 Jan 2019 13:57:29 +0000 (13:57 +0000)]
Slight fix for r351820

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351821 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoFix llvm::is_trivially_copyable portability issues
Serge Guelton [Tue, 22 Jan 2019 13:48:55 +0000 (13:48 +0000)]
Fix llvm::is_trivially_copyable portability issues

llvm::is_trivially_copyable portability is verified at compile time using
std::is_trivially_copyable as the reference implementation.

Unfortunately, the latter is not available on all platforms, so introduce
a proper configure check to detect if it is available on the target platform.

In a similar manner, std::is_copy_assignable is not fully supported for gcc4.9.
Provide a portable (?) implementation instead.

Differential Revision: https://reviews.llvm.org/D57018

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351820 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86][SSE] Canonicalize OR(AND(X,C),AND(Y,~C)) -> OR(AND(X,C),ANDNP(C,Y))
Simon Pilgrim [Tue, 22 Jan 2019 13:44:49 +0000 (13:44 +0000)]
[X86][SSE] Canonicalize OR(AND(X,C),AND(Y,~C)) -> OR(AND(X,C),ANDNP(C,Y))

For constant bit select patterns, replace one AND with a ANDNP, allowing us to reuse the constant mask. Only do this if the mask has multiple uses (to avoid losing load folding) or if we have XOP as its VPCMOV can handle most folding commutations.

This also requires computeKnownBitsForTargetNode support for X86ISD::ANDNP and X86ISD::FOR to prevent regressions in fabs/fcopysign patterns.

Differential Revision: https://reviews.llvm.org/D55935

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351819 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86][BtVer2] SSE2 vector shifts has local forwarding disabled
Simon Pilgrim [Tue, 22 Jan 2019 13:27:18 +0000 (13:27 +0000)]
[X86][BtVer2] SSE2 vector shifts has local forwarding disabled

Similar to horizontal ops on D56777, the sse2 (but not mmx) bit shift ops has local forwarding disabled, adding +1cy to the use latency for the result.

Differential Revision: https://reviews.llvm.org/D57026

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351817 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoFix "comparison of unsigned expression >= 0 is always true" warning. NFCI.
Simon Pilgrim [Tue, 22 Jan 2019 13:18:26 +0000 (13:18 +0000)]
Fix "comparison of unsigned expression >= 0 is always true" warning. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351816 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86][BtVer2] X86ISD::VPERMILPV has local forwarding disabled
Simon Pilgrim [Tue, 22 Jan 2019 13:13:57 +0000 (13:13 +0000)]
[X86][BtVer2] X86ISD::VPERMILPV has local forwarding disabled

Similar to horizontal ops on D56777, the vpermilpd/vpermilps variable mask ops has local forwarding disabled, adding +1cy to the use latency for the result.

Differential Revision: https://reviews.llvm.org/D57022

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351815 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoRevert "[llvm-objcopy] [COFF] Implement --add-gnu-debuglink"
Martin Storsjo [Tue, 22 Jan 2019 12:35:34 +0000 (12:35 +0000)]
Revert "[llvm-objcopy] [COFF] Implement --add-gnu-debuglink"

This reverts commit r351801, as it caused errors on (so far)
ppc64be and aarch64 buildbots - the reason is yet unknown.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351811 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[CostModel][X86] Add ICMP Predicate specific costs
Simon Pilgrim [Tue, 22 Jan 2019 12:29:38 +0000 (12:29 +0000)]
[CostModel][X86] Add ICMP Predicate specific costs

First step towards PR40376, this patch adds support for getCmpSelInstrCost to use the (optional) Instruction CmpInst predicate to indicate the type of integer comparison we're performing and alter the costs accordingly.

Differential Revision: https://reviews.llvm.org/D57013

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351810 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86][SSE] Add selective commutation support for insertps (PR40340)
Simon Pilgrim [Tue, 22 Jan 2019 12:17:48 +0000 (12:17 +0000)]
[X86][SSE] Add selective commutation support for insertps (PR40340)

When we are inserting 1 "inline" element, and zeroing 2 of the other elements then we can safely commute the insertps source inputs to improve memory folding.

Differential Revision: https://reviews.llvm.org/D56843

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351807 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[RISCV] Quick fix for PR40333
Alex Bradbury [Tue, 22 Jan 2019 12:11:53 +0000 (12:11 +0000)]
[RISCV] Quick fix for PR40333

Avoid the infinite loop caused by the target DAG combine converting ANYEXT to
SIGNEXT and the target-independent DAG combine logic converting back to
ANYEXT. Do this by not adding the new node to the worklist.

Committing directly as this definitely doesn't make the problem any worse, and
I intend to follow-up with a patch that avoids this custom combiner logic
altogether and just lowers the i32 operations to a target-specific
SelectionDAG node. This should be easier to reason about and improve codegen
quality in some cases (though may miss out on some later DAG combines).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351806 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[LoopPredication] Support guards expressed as branches by widenable condition
Max Kazantsev [Tue, 22 Jan 2019 11:49:06 +0000 (11:49 +0000)]
[LoopPredication] Support guards expressed as branches by widenable condition

This patch adds support of guards expressed as branches by widenable
conditions in Loop Predication.

Differential Revision: https://reviews.llvm.org/D56081
Reviewed By: reames

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351805 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Add test for matchAddressRecursively's MUL handling
Simon Pilgrim [Tue, 22 Jan 2019 11:39:21 +0000 (11:39 +0000)]
[X86] Add test for matchAddressRecursively's MUL handling

Noticed in code coverage tests that this isn't tested.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351804 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[NFC] Add function to parse widenable conditional branches
Max Kazantsev [Tue, 22 Jan 2019 11:21:32 +0000 (11:21 +0000)]
[NFC] Add function to parse widenable conditional branches

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351803 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[llvm-objcopy] [COFF] Implement --add-gnu-debuglink
Martin Storsjo [Tue, 22 Jan 2019 10:58:18 +0000 (10:58 +0000)]
[llvm-objcopy] [COFF] Implement --add-gnu-debuglink

Differential Revision: https://reviews.llvm.org/D57007

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351801 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[llvm-objcopy] [COFF] Update symbol indices in weak externals
Martin Storsjo [Tue, 22 Jan 2019 10:58:09 +0000 (10:58 +0000)]
[llvm-objcopy] [COFF] Update symbol indices in weak externals

Differential Revision: https://reviews.llvm.org/D57006

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351800 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[llvm-objcopy] Consistently use createStringError instead of make_error<StringError>
Martin Storsjo [Tue, 22 Jan 2019 10:57:59 +0000 (10:57 +0000)]
[llvm-objcopy] Consistently use createStringError instead of make_error<StringError>

This was requested in the review of D57006.

Also add missing quotes around symbol names in error messages.

Differential Revision: https://reviews.llvm.org/D57014

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351799 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[NFC][llvm-readobj]Normalise --/- inconsistency in test options
James Henderson [Tue, 22 Jan 2019 10:57:21 +0000 (10:57 +0000)]
[NFC][llvm-readobj]Normalise --/- inconsistency in test options

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351798 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] HADDPS/HADDPD scalar lowering was added at rL350421
Simon Pilgrim [Tue, 22 Jan 2019 10:49:41 +0000 (10:49 +0000)]
[X86] HADDPS/HADDPD scalar lowering was added at rL350421

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351797 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoRevert r351778: IR: Add fp operations to atomicrmw
Chandler Carruth [Tue, 22 Jan 2019 10:29:58 +0000 (10:29 +0000)]
Revert r351778: IR: Add fp operations to atomicrmw

This broke the RISCV build, and even with that fixed, one of the RISCV
tests behaves surprisingly differently with asserts than without,
leaving there no clear test pattern to use. Generally it seems bad for
hte IR to differ substantially due to asserts (as in, an alloca is used
with asserts that isn't needed without!) and nothing I did simply would
fix it so I'm reverting back to green.

This also required reverting the RISCV build fix in r351782.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351796 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[llvm-symbolizer] Add support for --basenames/-s
James Henderson [Tue, 22 Jan 2019 10:24:32 +0000 (10:24 +0000)]
[llvm-symbolizer] Add support for --basenames/-s

This fixes https://bugs.llvm.org/show_bug.cgi?id=40068.

--basenames is a GNU addr2line switch which strips the directory names
from the file path in the output.

Reviewed by: ruiu

Differential Revision: https://reviews.llvm.org/D56919

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351795 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[NFC] Factor out some reusable logic
Max Kazantsev [Tue, 22 Jan 2019 10:13:36 +0000 (10:13 +0000)]
[NFC] Factor out some reusable logic

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351794 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[NFC] Add detector for guards expressed as branch by widenable conditions
Max Kazantsev [Tue, 22 Jan 2019 09:36:22 +0000 (09:36 +0000)]
[NFC] Add detector for guards expressed as branch by widenable conditions

This patch adds a function to detect guards expressed in explicit control
flow form as branch by `and` with widenable condition intrinsic call:

    %wc = call i1 @llvm.experimental.widenable.condition()
    %guard_cond = and i1, %some_cond, %wc
    br i1 %guard_cond, label %guarded, label %deopt

  deopt:
    <maybe some non-side-effecting instructions>
    deoptimize()

This form can be used as alternative to implicit control flow guard
representation expressed by `experimental_guard` intrinsic.

Differential Revision: https://reviews.llvm.org/D56074
Reviewed By: reames

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351791 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[llvm-readelf]Revert --dyn-symbols behaviour to make it GNU compatible, and add new...
James Henderson [Tue, 22 Jan 2019 09:35:35 +0000 (09:35 +0000)]
[llvm-readelf]Revert --dyn-symbols behaviour to make it GNU compatible, and add new --hash-symbols switch for old behaviour

In r287786, the behaviour of --dyn-symbols in llvm-readelf (but not
llvm-readobj) was changed to print the dynamic symbols as derived from
the hash table, rather than to print the dynamic symbol table contents
directly. The original change was initially submitted without review,
and some comments were made on the commit mailing list implying that the
new behavious is GNU compatible. I argue that it is not:

  1) It does not include a null symbol.
  2) It prints the symbols based on an order derived from the hash
     table.
  3) It prints an extra column indicating which bucket it came from.
     This could break parsers that expect a fixed number of columns,
     with the first column being the symbol index.
  4) If the input happens to have both .hash and .gnu.hash section, it
     prints interpretations of them both, resulting in most symbols
     being printed twice.
  5) There is no way of just printing the raw dynamic symbol table,
     because --symbols also prints the static symbol table.

This patch reverts the --dyn-symbols behaviour back to its old behaviour
of just printing the contents of the dynamic symbol table, similar to
what is printed by --symbols. As the hashed interpretation is still
desirable to validate the hash table, it puts it under a new switch
"--hash-symbols". This is a no-op on all output forms except for GNU
output style for ELF. If there is no hash table, it does nothing,
unlike the previous behaviour which printed the raw dynamic symbol
table, since the raw dynsym is available under --dyn-symbols.

The yaml input for the test is based on that in
test/tools/llvm-readobj/demangle.test, but stripped down to the bare
minimum to provide a valid dynamic symbol.

Note: some LLD tests needed updating. I will commit a separate patch for
those.

Reviewed by: grimar, rupprecht

Differential Revision: https://reviews.llvm.org/D56910

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351789 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoRevert "Remove static_assert(value == std::is_trivially_copyable<T>::value)"
Vitaly Buka [Tue, 22 Jan 2019 07:22:45 +0000 (07:22 +0000)]
Revert "Remove static_assert(value == std::is_trivially_copyable<T>::value)"

Upgraded the bot as workaround.

This reverts commit r351784.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351786 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[RISCV][NFC] Add break to case statement in RISCVDAGToDAGISel::Select
Alex Bradbury [Tue, 22 Jan 2019 07:22:00 +0000 (07:22 +0000)]
[RISCV][NFC] Add break to case statement in RISCVDAGToDAGISel::Select

The break isn't strictly needed yet as there is no subsequent entry in the
case. But adding to prevent mistakes further down the road.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351785 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoRemove static_assert(value == std::is_trivially_copyable<T>::value)
Vitaly Buka [Tue, 22 Jan 2019 06:26:50 +0000 (06:26 +0000)]
Remove static_assert(value == std::is_trivially_copyable<T>::value)

This fails to compile with clang ang libstdc++ 4.6

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351784 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[RISCV] Fix build after r351778
Alex Bradbury [Tue, 22 Jan 2019 05:06:57 +0000 (05:06 +0000)]
[RISCV] Fix build after r351778

Also add a comment to explain the expansion strategy for atomicrmw
{fadd,fsub}.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351782 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoIR: Add fp operations to atomicrmw
Matt Arsenault [Tue, 22 Jan 2019 03:32:36 +0000 (03:32 +0000)]
IR: Add fp operations to atomicrmw

Add just fadd/fsub for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351778 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[ARM] Combine ands+lsls to lsls+lsrs for Thumb1.
Eli Friedman [Tue, 22 Jan 2019 01:51:37 +0000 (01:51 +0000)]
[ARM] Combine ands+lsls to lsls+lsrs for Thumb1.

This patch may seem familiar... but my previous patch handled the
equivalent lsls+and, not this case.  Usually instcombine puts the
"and" after the shift, so this case doesn't come up. However, if the
shift comes out of a GEP, it won't get canonicalized by instcombine,
and DAGCombine doesn't have an equivalent transform.

This also modifies isDesirableToCommuteWithShift to suppress DAGCombine
transforms which would make the overall code worse.

I'm not really happy adding a bunch of code to handle this, but it would
probably be tricky to substantially improve the behavior of DAGCombine
here.

Differential Revision: https://reviews.llvm.org/D56032

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351776 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[CVP] Use LVI to constant fold deopt operands
Philip Reames [Tue, 22 Jan 2019 01:34:33 +0000 (01:34 +0000)]
[CVP] Use LVI to constant fold deopt operands

Deopt operands are generally intended to record information about a site in code with minimal perturbation of the surrounding code. Idiomatically, they also tend to appear down rare paths. Putting these together, we have an obvious case for extending CVP w/deopt operand constant folding. Arguably, we should be doing this for all operands on all instructions, but that's definitely a much larger and risky change.

Differential Revision: https://reviews.llvm.org/D55678

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351774 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[LangRef] Clarify semantics of volatile operations.
Eli Friedman [Tue, 22 Jan 2019 00:42:20 +0000 (00:42 +0000)]
[LangRef] Clarify semantics of volatile operations.

Specifically, clarify the following:

1. Volatile load and store may access addresses that are not memory.
2. Volatile load and store do not modify arbitrary memory.
3. Volatile load and store do not trap.

Prompted by recent volatile discussion on llvmdev.

Currently, there's sort of a split in the source code about whether
volatile operations are allowed to trap; this resolves that dispute in
favor of not allowing them to trap.

Differential Revision: https://reviews.llvm.org/D53184

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351772 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoGlobalISel: Fix out of bounds crashes in verifier
Matt Arsenault [Tue, 22 Jan 2019 00:29:37 +0000 (00:29 +0000)]
GlobalISel: Fix out of bounds crashes in verifier

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351769 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[AArch64] Add patterns for zext/sext of shift amount.
Eli Friedman [Tue, 22 Jan 2019 00:21:35 +0000 (00:21 +0000)]
[AArch64] Add patterns for zext/sext of shift amount.

Not sure this is the best fix, but it saves an instruction for certain
constructs involving variable shifts.

Differential Revision: https://reviews.llvm.org/D55572

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351768 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoAMDGPU/GlobalISel: Legalize more fp<->int conversions
Matt Arsenault [Tue, 22 Jan 2019 00:20:17 +0000 (00:20 +0000)]
AMDGPU/GlobalISel: Legalize more fp<->int conversions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351767 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoDocument toolchain update policy
JF Bastien [Mon, 21 Jan 2019 23:53:52 +0000 (23:53 +0000)]
Document toolchain update policy

Summary:
Capture the current agreed-upon toolchain update policy based on the following
discussions:

  - LLVM dev meeting 2018 BoF "Migrating to C++14, and beyond!"
    llvm.org/devmtg/2018-10/talk-abstracts.html#bof3
  - A Short Policy Proposal Regarding Host Compilers
    lists.llvm.org/pipermail/llvm-dev/2018-May/123238.html
  - Using C++14 code in LLVM (2018)
    lists.llvm.org/pipermail/llvm-dev/2018-May/123182.html
  - Using C++14 code in LLVM (2017)
    lists.llvm.org/pipermail/llvm-dev/2017-October/118673.html
  - Using C++14 code in LLVM (2016)
    lists.llvm.org/pipermail/llvm-dev/2016-October/105483.html
  - Document and Enforce new Host Compiler Policy
    llvm.org/D47073
  - Require GCC 5.1 and LLVM 3.5 at a minimum
    llvm.org/D46723

Subscribers: jkorous, dexonsmith, llvm-commits

Differential Revision: https://reviews.llvm.org/D56819

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351765 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[x86] add another test for xor with undefs; NFC
Sanjay Patel [Mon, 21 Jan 2019 22:12:35 +0000 (22:12 +0000)]
[x86] add another test for xor with undefs; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351764 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[x86] add tests for vector ops with undef lanes; NFC
Sanjay Patel [Mon, 21 Jan 2019 21:52:27 +0000 (21:52 +0000)]
[x86] add tests for vector ops with undef lanes; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351763 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Use X86ISD::VFPROUND instead of ISD::FP_ROUND for 256 and 512 bit cvtpd2ps...
Craig Topper [Mon, 21 Jan 2019 20:14:09 +0000 (20:14 +0000)]
[X86] Use X86ISD::VFPROUND instead of ISD::FP_ROUND for 256 and 512 bit cvtpd2ps intrinsics.

Summary:
Use X86ISD::VFPROUND in the instruction isel patterns. Add new patterns for ISD::FP_ROUND to maintain support for fptrunc in IR.

In the process I found a couple duplicate isel patterns which I also deleted in this patch.

Reviewers: RKSimon, spatel

Reviewed By: RKSimon

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D56991

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351762 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Change avx512 COMPRESS and EXPAND lowering to use a single masked node instead...
Craig Topper [Mon, 21 Jan 2019 20:02:28 +0000 (20:02 +0000)]
[X86] Change avx512 COMPRESS and EXPAND lowering to use a single masked node instead of expand/compress+select.

Summary:
For compress, a select node doesn't semantically reflect the behavior of the instruction. The mask would have holes in it, but the resulting write is to contiguous elements at the bottom of the vector.

Furthermore, as far as the compressing and expanding is concerned the behavior is depended on the mask. You can't just have an expand/compress node that only reads the input vector. That node would have no meaning by itself.

This all only works because we pattern match the compress/expand+select back to the instruction. But conceivably an optimization of the select could break the pattern and leave something meaningless.

This patch modifies the expand and compress node to take the mask and passthru as additional inputs and gets rid of the select all together.

Reviewers: RKSimon, spatel

Reviewed By: RKSimon

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D57002

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351761 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[AMDGPU] Fixed hazard recognizer to walk predecessors
Stanislav Mekhanoshin [Mon, 21 Jan 2019 19:11:26 +0000 (19:11 +0000)]
[AMDGPU] Fixed hazard recognizer to walk predecessors

Fixes two problems with GCNHazardRecognizer:
1. It only scans up to 5 instructions emitted earlier.
2. It does not take control flow into account. An earlier instruction
from the previous basic block is not necessarily a predecessor.
At the same time a real predecessor block is not scanned.

The patch provides a way to distinguish between scheduler and
hazard recognizer mode. It is OK to work with emitted instructions
in the scheduler because we do not really know what will be emitted
later and its order. However, when pass works as a hazard recognizer
the schedule is already finalized, and we have full access to the
instructions for the whole function, so we can properly traverse
predecessors and their instructions.

Differential Revision: https://reviews.llvm.org/D56923

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351759 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agogn build: Stop passing -DLLVM_LIBXML2_ENABLED to some targets
Nico Weber [Mon, 21 Jan 2019 18:59:11 +0000 (18:59 +0000)]
gn build: Stop passing -DLLVM_LIBXML2_ENABLED to some targets

This is a remnant from before the gn build had a working config.h.

Defining LLVM_LIBXML2_ENABLED only for targets that depend on build/libs/xml is
nice in that only some of the codebase needs to be rebuilt when
llvm_enable_libxml2 changes -- but config.h already defines it and defining it
there and then redundantly a second time for some targets is worse than having
it just in config.h.

No behavior change.

Differential Revision: https://reviews.llvm.org/D56908

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351758 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agogn build: Merge r351627, r351548, r351701
Nico Weber [Mon, 21 Jan 2019 18:56:39 +0000 (18:56 +0000)]
gn build: Merge r351627, r351548, r351701

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351757 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoFix compilation error with gcc 4.8
Pavel Labath [Mon, 21 Jan 2019 18:21:03 +0000 (18:21 +0000)]
Fix compilation error with gcc 4.8

This version of gcc seems to be having issues with raw literals inside macro
arguments. I change the string to use regular string literals instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351756 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86][BtVer2] Update latency of mmx horizontal operations
Simon Pilgrim [Mon, 21 Jan 2019 18:04:25 +0000 (18:04 +0000)]
[X86][BtVer2] Update latency of mmx horizontal operations

D56777 added +1cy local forwarding penalty for horizontal operations, but this penalty only affects sse2/xmm variants, the mmx variants don't suffer the penalty.

Confirmed with @andreadb

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351755 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[AArch64] add more tests for buildvec to shuffle transform; NFC
Sanjay Patel [Mon, 21 Jan 2019 17:46:35 +0000 (17:46 +0000)]
[AArch64] add more tests for buildvec to shuffle transform; NFC

These are copied from the sibling x86 file. I'm not sure which
of the current outputs (if any) is considered optimal, but
someone more familiar with AArch may want to take a look.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351754 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[DAGCombiner] fix crash when converting build vector to shuffle
Sanjay Patel [Mon, 21 Jan 2019 17:30:14 +0000 (17:30 +0000)]
[DAGCombiner] fix crash when converting build vector to shuffle

The regression test is reduced from the example shown in D56281.
This does raise a question as noted in the test file: do we want
to handle this pattern? I don't have a motivating example for
that on x86 yet, but it seems like we could have that pattern
there too, so we could avoid the back-and-forth using a shuffle.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351753 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86][BtVer2] Update the WriteLoad latency.
Andrea Di Biagio [Mon, 21 Jan 2019 12:04:10 +0000 (12:04 +0000)]
[X86][BtVer2] Update the WriteLoad latency.

r327630 introduced new write definitions for float/vector loads.
Before that revision, WriteLoad was used by both integer/float (scalar/vector)
load. So, WriteLoad had to conservatively declare a latency to 5cy. That is
because the load-to-use latency for float/vector load is 5cy.

Now that we have dedicated writes for float/vector loads, there is no reason why
we should keep the latency of WriteLoad to 5cy. At the moment, WriteLoad is only
used by scalar integer loads only; we can assume an optimstic 3cy latency for
them.
This patch changes that latency from 5cy to 3cy, and regenerates the affected
scheduling/mca tests.

Differential Revision: https://reviews.llvm.org/D56922

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351742 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[CostModel][X86] Add XOP icmp cost tests (PR40376)
Simon Pilgrim [Mon, 21 Jan 2019 11:33:52 +0000 (11:33 +0000)]
[CostModel][X86] Add XOP icmp cost tests (PR40376)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351741 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[llvm-symbolizer] Add -no-demangle as alias for -demangle=false
Dmitry Venikov [Mon, 21 Jan 2019 10:00:57 +0000 (10:00 +0000)]
[llvm-symbolizer] Add -no-demangle as alias for -demangle=false

Summary: Provides -no-demangle as alias for -demangle=false. Motivation: https://bugs.llvm.org/show_bug.cgi?id=40075

Reviewers: jhenderson, ruiu

Reviewed By: jhenderson

Subscribers: erik.pilkington, rupprecht, llvm-commits

Differential Revision: https://reviews.llvm.org/D56773

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351735 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoFix typos throughout the license files that somehow I and my reviewers
Chandler Carruth [Mon, 21 Jan 2019 09:52:34 +0000 (09:52 +0000)]
Fix typos throughout the license files that somehow I and my reviewers
all missed!

Thanks to Alex Bradbury for pointing this out, and the fact that I never
added the intended `legacy` anchor to the developer policy. Add that
anchor too. With hope, this will cause the links to all resolve
successfully.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351731 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Remove and autoupgrade vpmovqd/vpmovwb intrinsics using trunc+select.
Craig Topper [Mon, 21 Jan 2019 08:16:59 +0000 (08:16 +0000)]
[X86] Remove and autoupgrade vpmovqd/vpmovwb intrinsics using trunc+select.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351729 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[NFC] Make getExpressionSize unsigned short
Max Kazantsev [Mon, 21 Jan 2019 07:36:55 +0000 (07:36 +0000)]
[NFC] Make getExpressionSize unsigned short

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351727 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[NFC] Fix warnings in unit test of r351725
Max Kazantsev [Mon, 21 Jan 2019 07:27:47 +0000 (07:27 +0000)]
[NFC] Fix warnings in unit test of r351725

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351726 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[SCEV][NFC] Introduces expression sizes estimation
Max Kazantsev [Mon, 21 Jan 2019 06:19:50 +0000 (06:19 +0000)]
[SCEV][NFC] Introduces expression sizes estimation

This patch introduces the field `ExpressionSize` in SCEV. This field is
calculated only once on SCEV creation, and it represents the complexity of
this SCEV from arithmetical point of view (not from the point of the number
of actual different SCEV nodes that are used in the expression). Roughly
saying, it is the number of operands and operations symbols when we print this
SCEV.

A formal definition is following: if SCEV `X` has operands
  `Op1`, `Op2`, ..., `OpN`,
then
  Size(X) = 1 + Size(Op1) + Size(Op2) + ... + Size(OpN).
Size of SCEVConstant and SCEVUnknown is one.

Expression size may be used as a universal way to limit SCEV transformations
for huge SCEVs. Currently, we have a bunch of options that represents various
limits (such as recursion depth limit) that may not make any sense from the
point of view of a LLVM users who is not familiar with SCEV internals, and all
these different options pursue one goal. A more general rule that may
potentially allow us to get rid of this redundancy in options is "do not make
transformations with SCEVs of huge size". It can apply to all SCEV traversals
and transformations that may need to visit a SCEV node more than once, hence
they are prone to combinatorial explosions.

This patch only introduces SCEV sizes calculation as NFC, its utilization will
be introduced in follow-up patches.

Differential Revision: https://reviews.llvm.org/D35989
Reviewed By: reames

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351725 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[RISCV] Add R_RISCV_RELAX relocation to all possible relax candidates.
Kito Cheng [Mon, 21 Jan 2019 05:27:09 +0000 (05:27 +0000)]
[RISCV] Add R_RISCV_RELAX relocation to all possible relax candidates.

Summary:
Add R_RISCV_RELAX relocation to all possible relax candidates and
update corresponding testcase.

Reviewers: asb, apazos

Differential Revision: https://reviews.llvm.org/D46677

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351723 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[AVR] Insert unconditional branch when inserting MBBs between blocks with fallthrough
Dylan McKay [Mon, 21 Jan 2019 04:32:02 +0000 (04:32 +0000)]
[AVR] Insert unconditional branch when inserting MBBs between blocks with fallthrough

This updates the AVR Select8/Select16 expansion code so that, when
inserting the two basic blocks for true and false conditions, any
existing fallthrough on the previous block is preserved.

Prior to this patch, if the block before the Select pseudo fell through
to the subsequent block, two new basic blocks would be inserted at the
prior fallthrough point, changing the fallthrough destination.

The predecessor or successor lists were not updated, causing the
BranchFolding pass at -O1 and above the rearrange basic blocks, causing
an infinite loop. Not to mention the unconditional fallthrough to the
true block is incorrect in of itself.

This patch modifies the Select8/16 expansion so that, if inserting true
and false basic blocks at a fallthrough point, the implicit branch is
preserved by means of an explicit, unconditional branch to the previous
fallthrough destination.

Thanks to Carl Peto for reporting this bug.

This fixes avr-rust bug https://github.com/avr-rust/rust/issues/123.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351721 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[AVR] Enable emission of debug information
Dylan McKay [Mon, 21 Jan 2019 04:27:08 +0000 (04:27 +0000)]
[AVR] Enable emission of debug information

Prior to this, the code was missing AVR-specific relocation logic in
RelocVisitor.h.

This patch teaches RelocVisitor about R_AVR_16 and R_AVR_32.

Debug information is emitted in the final object file, and understood by
'avr-readelf --debug-dump' from AVR-GCC.

llvm-dwarfdump is yet to understand how to dump AVR DWARF symbols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351720 91177308-0d34-0410-b5e6-96231b3b80d8