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6 years ago[MachineOutliner][NFC] Sink some candidate logic into OutlinedFunction
Jessica Paquette [Tue, 24 Jul 2018 17:36:13 +0000 (17:36 +0000)]
[MachineOutliner][NFC] Sink some candidate logic into OutlinedFunction

Just some simple gardening to improve clarity.

Before, we had something along the lines of

1) Create a std::vector of Candidates
2) Create an OutlinedFunction
3) Create a std::vector of pointers to Candidates
4) Copy those over to the OutlinedFunction and the Candidate list

Now, OutlinedFunctions create the Candidate pointers. They're still copied
over to the main list of Candidates, but it makes it a bit clearer what's
going on.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337838 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoUse SCEV to avoid inserting some bounds checks.
Joel Galenson [Tue, 24 Jul 2018 15:21:54 +0000 (15:21 +0000)]
Use SCEV to avoid inserting some bounds checks.

This patch uses SCEV to avoid inserting some bounds checks when they are not needed.  This slightly improves the performance of code compiled with the bounds check sanitizer.

Differential Revision: https://reviews.llvm.org/D49602

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337830 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[PredicateInfo] Use custom mangling to support ssa_copy with unnamed types.
Florian Hahn [Tue, 24 Jul 2018 14:49:52 +0000 (14:49 +0000)]
[PredicateInfo] Use custom mangling to support ssa_copy with unnamed types.

This is a workaround and it would be better to fix this generally, but
doing it generally is quite tricky. See D48541 and PR38117.

Doing it in PredicateInfo directly allows us to use the type address to
differentiate different unnamed types, because neither the created
declarations nor the ssa_copy calls should be visible after
PredicateInfo got destroyed.

Reviewers: efriedma, davide

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D49126

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337828 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[mips] Fix local dynamic TLS with Sym64
Simon Atanasyan [Tue, 24 Jul 2018 13:47:52 +0000 (13:47 +0000)]
[mips] Fix local dynamic TLS with Sym64

For the final DTPREL addition, rather than a lui/daddiu/daddu triple,
LLVM was erronously emitting a daddiu/daddiu pair, treating the %dtprel_hi
as if it were a %dtprel_lo, since Mips::Hi expands unshifted for Sym64.
Instead, use a new TlsHi node and, although unnecessary due to the exact
structure of the nodes emitted, use TlsHi for local exec too to prevent
future bugs. Also garbage-collect the unused TprelLo and TlsGd nodes,
and TprelHi since its functionality is provided by the new common TlsHi node.

Patch by James Clarke.

Differential revision: https://reviews.llvm.org/D49259

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337827 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[x86/SLH] Extract the core register hardening logic to a low-level
Chandler Carruth [Tue, 24 Jul 2018 12:44:00 +0000 (12:44 +0000)]
[x86/SLH] Extract the core register hardening logic to a low-level
helper and restructure the post-load hardening to use this.

This isn't as trivial as I would have liked because the post-load
hardening used a trick that only works for it where it swapped in
a temporary register to the load rather than replacing anything.
However, there is a simple way to do this without that trick that allows
this to easily reuse a friendly API for hardening a value in a register.
That API will in turn be usable in subsequent patcehs.

This also techincally changes the position at which we insert the subreg
extraction for the predicate state, but that never resulted in an actual
instruction and so tests don't change at all.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337825 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[x86/SLH] Tidy up a comment, using doxygen structure and wording it to
Chandler Carruth [Tue, 24 Jul 2018 12:19:01 +0000 (12:19 +0000)]
[x86/SLH] Tidy up a comment, using doxygen structure and wording it to
be more accurate and understandable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337822 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[ARM] Disable ARMCodeGenPrepare by default
Sam Parker [Tue, 24 Jul 2018 12:04:23 +0000 (12:04 +0000)]
[ARM] Disable ARMCodeGenPrepare by default

ARM Stage 2 builders have been suspiciously broken since the pass was
committed. Disabling to hopefully fix the bots and give me time to
debug.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337821 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoADT: Shrink SmallVector size 0 to 16B on 64-bit platforms
Duncan P. N. Exon Smith [Tue, 24 Jul 2018 11:32:13 +0000 (11:32 +0000)]
ADT: Shrink SmallVector size 0 to 16B on 64-bit platforms

SmallVectorTemplateCommon wants to know the address of the first element
so it can detect whether it's in "small size" mode.

The old implementation split the small array, creating the storage for
the first element in SmallVectorTemplateCommon, and pulling the rest
into SmallVectorStorage where we know the size of the array.  This
bloats SmallVector size 0 by the larger of sizeof(void*) and sizeof(T),
and we're not even using the storage.

The new implementation leaves the full small storage to
SmallVectorStorage.  To calculate the offset of the first element in
SmallVectorTemplateCommon, we just need to know how far to jump, which
we can calculate out-of-band.  One subtlety is that we need
SmallVectorStorage to be properly aligned even when the size is 0, to be
sure that (for large alignments) we actually have the padding and it's
well defined to do the pointer math.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337820 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoRecommit r334887: [SmallSet] Add SmallSetIterator.
Florian Hahn [Tue, 24 Jul 2018 10:32:54 +0000 (10:32 +0000)]
Recommit r334887: [SmallSet] Add SmallSetIterator.

Updated to make sure we properly construct/destroy SetIter if it has a
non-trivial ctors/dtors, like in MSVC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337818 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoRevert "[DebugInfo] Generate DWARF debug information for labels."
Shiva Chen [Tue, 24 Jul 2018 06:17:45 +0000 (06:17 +0000)]
Revert "[DebugInfo] Generate DWARF debug information for labels."

This reverts commit b454fa1b4079b6c0a5b1565982d16516385838d7.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337812 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[x86] Clean up and convert test to use generated CHECK lines.
Chandler Carruth [Tue, 24 Jul 2018 03:18:08 +0000 (03:18 +0000)]
[x86] Clean up and convert test to use generated CHECK lines.

This test was already checking microscopic behavior of tail call under
specific conditions. This just makes the CHECK lines much more
consistent, clear, and easily updated when intentional changes are made.

I've also switched the test to consistently name the entry block and to
order the helper declarations and comments for specific tests in the
more usual locations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337806 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[x86] Update the CHECK lines of this test to use the latest patterns
Chandler Carruth [Tue, 24 Jul 2018 03:07:07 +0000 (03:07 +0000)]
[x86] Update the CHECK lines of this test to use the latest patterns
from the script. This minimizes the diff in subsequent changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337805 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[DebugInfo] Generate DWARF debug information for labels.
Shiva Chen [Tue, 24 Jul 2018 02:22:55 +0000 (02:22 +0000)]
[DebugInfo] Generate DWARF debug information for labels.

There are two forms for label debug information in DWARF format.

1. Labels in a non-inlined function:

DW_TAG_label
  DW_AT_name
  DW_AT_decl_file
  DW_AT_decl_line
  DW_AT_low_pc

2. Labels in an inlined function:

DW_TAG_label
  DW_AT_abstract_origin
  DW_AT_low_pc

We will collect label information from DBG_LABEL. Before every DBG_LABEL,
we will generate a temporary symbol to denote the location of the label.
The symbol could be used to get DW_AT_low_pc afterwards. So, we create a
mapping between 'inlined label' and DBG_LABEL MachineInstr in DebugHandlerBase.
The DBG_LABEL in the mapping is used to query the symbol before it.

The AbstractLabels in DwarfCompileUnit is used to process labels in inlined
functions.

We also keep a mapping between scope and labels in DwarfFile to help to
generate correct tree structure of DIEs.

Differential Revision: https://reviews.llvm.org/D45556

Patch by Hsiangkai Wang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337799 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAMDGPU/GlobalISel: Legalize G_INSERT
Tom Stellard [Tue, 24 Jul 2018 02:19:20 +0000 (02:19 +0000)]
AMDGPU/GlobalISel: Legalize G_INSERT

Reviewers: arsenm

Subscribers: kzhuravl, wdng, nhaehnle, yaxunl, rovka, kristof.beyls, dstuttard, tpr, t-tye, llvm-commits

Differential Revision: https://reviews.llvm.org/D49601

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337798 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agollvm-xray: Broken chrome trace event format output
Dean Michael Berris [Tue, 24 Jul 2018 01:45:34 +0000 (01:45 +0000)]
llvm-xray: Broken chrome trace event format output

Summary:
Missing comma separator for EXIT and TAIL_EXIT RecordTypes emit invalid
JSON output for Chrome Trace Event Format.

Reviewers: dberris

Reviewed By: dberris

Subscribers: sammccall, kpw, llvm-commits

Differential Revision: https://reviews.llvm.org/D49687

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337795 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAMDGPU/GlobalISel: Remove unnecessary legality constraint for G_EXTRACT
Tom Stellard [Tue, 24 Jul 2018 01:43:49 +0000 (01:43 +0000)]
AMDGPU/GlobalISel: Remove unnecessary legality constraint for G_EXTRACT

Summary:
We were marking G_EXTRACT operations unsupported if the output type
was larger than the input type.  I don't see how this could ever actually
happen, so I dropped the constraint.  Doing this makes it possible to
reuse the same legality code for G_INSERT.

Reviewers: arsenm

Reviewed By: arsenm

Subscribers: kzhuravl, wdng, nhaehnle, yaxunl, rovka, kristof.beyls, dstuttard, tpr, t-tye, llvm-commits

Differential Revision: https://reviews.llvm.org/D49600

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337794 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAdd PerfJITEventListener for perf profiling support.
Andres Freund [Tue, 24 Jul 2018 00:54:06 +0000 (00:54 +0000)]
Add PerfJITEventListener for perf profiling support.

This new JIT event listener supports generating profiling data for
the linux 'perf' profiling tool, allowing it to generate function and
instruction level profiles.

Currently this functionality is not enabled by default, but must be
enabled with LLVM_USE_PERF=yes.  Given that the listener has no
dependencies, it might be sensible to enable by default once the
initial issues have been shaken out.

I followed existing precedent in registering the listener by default
in lli. Should there be a decision to enable this by default on linux,
that should probably be changed.

Please note that until https://reviews.llvm.org/D47343 is resolved,
using this functionality with mcjit rather than orcjit will not
reliably work.

Disregarding the previous comment, here's an example:

$ cat /tmp/expensive_loop.c

bool stupid_isprime(uint64_t num)
{
        if (num == 2)
                return true;
        if (num < 1 || num % 2 == 0)
                return false;
        for(uint64_t i = 3; i < num / 2; i+= 2) {
                if (num % i == 0)
                        return false;
        }
        return true;
}

int main(int argc, char **argv)
{
        int numprimes = 0;

        for (uint64_t num = argc; num < 100000; num++)
        {
                if (stupid_isprime(num))
                        numprimes++;
        }

        return numprimes;
}

$ clang -ggdb -S -c -emit-llvm /tmp/expensive_loop.c -o
/tmp/expensive_loop.ll

$ perf record -o perf.data -g -k 1 ./bin/lli -jit-kind=mcjit /tmp/expensive_loop.ll 1

$ perf inject --jit -i perf.data -o perf.jit.data

$ perf report -i perf.jit.data
-   92.59%  lli      jitted-5881-2.so                   [.] stupid_isprime
     stupid_isprime
     main
     llvm::MCJIT::runFunction
     llvm::ExecutionEngine::runFunctionAsMain
     main
     __libc_start_main
     0x4bf6258d4c544155
+    0.85%  lli      ld-2.27.so                         [.] do_lookup_x

And line-level annotations also work:
       │              for(uint64_t i = 3; i < num / 2; i+= 2) {
       │1 30:   movq   $0x3,-0x18(%rbp)
  0.03 │1 38:   mov    -0x18(%rbp),%rax
  0.03 │        mov    -0x10(%rbp),%rcx
       │        shr    $0x1,%rcx
  3.63 │     ┌──cmp    %rcx,%rax
       │     ├──jae    6f
       │     │                if (num % i == 0)
  0.03 │     │  mov    -0x10(%rbp),%rax
       │     │  xor    %edx,%edx
 89.00 │     │  divq   -0x18(%rbp)
       │     │  cmp    $0x0,%rdx
  0.22 │     │↓ jne    5f
       │     │                        return false;
       │     │  movb   $0x0,-0x1(%rbp)
       │     │↓ jmp    73
       │     │        }
  3.22 │1 5f:│↓ jmp    61
       │     │        for(uint64_t i = 3; i < num / 2; i+= 2) {

Subscribers: mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D44892

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337789 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[Debugify] Export per-pass debug info loss statistics
Vedant Kumar [Tue, 24 Jul 2018 00:41:29 +0000 (00:41 +0000)]
[Debugify] Export per-pass debug info loss statistics

Add a -debugify-export option to opt. This exports per-pass `debugify`
loss statistics to a file in CSV format.

For some interesting numbers on debug value loss during an -O2 build
of the sqlite3 amalgamation, see the review thread.

Differential Revision: https://reviews.llvm.org/D49003

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337787 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[Debugify] Move interface definitions to a header, NFC
Vedant Kumar [Tue, 24 Jul 2018 00:41:28 +0000 (00:41 +0000)]
[Debugify] Move interface definitions to a header, NFC

This is a minor cleanup in preparation for a change to export DI
statistics from -check-debugify. To do that, it would be cleaner to have
a dedicated header for the debugify interface.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337786 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[x86/SLH] Simplify the code for hardening a loaded value. NFC.
Chandler Carruth [Tue, 24 Jul 2018 00:35:36 +0000 (00:35 +0000)]
[x86/SLH] Simplify the code for hardening a loaded value. NFC.

This is in preparation for extracting this into a re-usable utility in
this code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337785 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[x86/SLH] Remove complex SHRX-based post-load hardening.
Chandler Carruth [Tue, 24 Jul 2018 00:21:59 +0000 (00:21 +0000)]
[x86/SLH] Remove complex SHRX-based post-load hardening.

This code was really nasty, had several bugs in it originally, and
wasn't carrying its weight. While on Zen we have all 4 ports available
for SHRX, on all of the Intel parts with Agner's tables, SHRX can only
execute on 2 ports, giving it 1/2 the throughput of OR.

Worse, all too often this pattern required two SHRX instructions in
a chain, hurting the critical path by a lot.

Even if we end up needing to safe/restore EFLAGS, that is no longer so
bad. We pay for a uop to save the flag, but we very likely get fusion
when it is used by forming a test/jCC pair or something similar. In
practice, I don't expect the SHRX to be a significant savings here, so
I'd like to avoid the complex code required. We can always resurrect
this if/when someone has a specific performance issue addressed by it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337781 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[DWARF] Use deque in place of SmallVector to fix use-after-free issue
Fangrui Song [Mon, 23 Jul 2018 23:27:45 +0000 (23:27 +0000)]
[DWARF] Use deque in place of SmallVector to fix use-after-free issue

Summary: SmallVector's elements are moved when resizing and cause use-after-free.

Reviewers: probinson, dblaikie

Subscribers: JDevlieghere, llvm-commits

Differential Revision: https://reviews.llvm.org/D49702

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337772 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoFix typo in test/CodeGen/Mips/dins.ll
Thomas Anderson [Mon, 23 Jul 2018 23:19:53 +0000 (23:19 +0000)]
Fix typo in test/CodeGen/Mips/dins.ll

Differential Revision: https://reviews.llvm.org/D49704

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337771 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoEmbed a template specialization in a namespace to work around a gcc bug.
Wolfgang Pieb [Mon, 23 Jul 2018 23:14:23 +0000 (23:14 +0000)]
Embed a template specialization in a namespace to work around a gcc bug.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337770 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[DWARF v5] Refactor range lists dumping by using a more generic way of handling table...
Wolfgang Pieb [Mon, 23 Jul 2018 22:37:17 +0000 (22:37 +0000)]
[DWARF v5] Refactor range lists dumping by using a more generic way of handling tables of lists.
The intent is to use it for location list tables as well. Change is almost NFC with the exception
of the spelling of some strings used during dumping (all lowercase now).

Reviewer: JDevlieghere

Differential Revision: https://reviews.llvm.org/D49500

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337763 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[LTO] Handle __imp_ (dllimport) symbols consistently with lld
Teresa Johnson [Mon, 23 Jul 2018 22:33:57 +0000 (22:33 +0000)]
[LTO] Handle __imp_ (dllimport) symbols consistently with lld

Summary:
Similar to what lld already does for dllimport symbols which are
prefaced with __imp_ (see lld patch r240620), strip off the __imp_
prefix in LTO. Otherwise we can get 2 separate GlobalResolution for
a single symbol, the dllimport declaration, and the definition, which
leads to incorrect LTO handling.

Fixes PR38105.

Reviewers: pcc

Subscribers: mehdi_amini, inglorion, steven_wu, dexonsmith, llvm-commits

Differential Revision: https://reviews.llvm.org/D49138

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337762 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[demangler] call terminate() if allocation failed
Erik Pilkington [Mon, 23 Jul 2018 22:23:04 +0000 (22:23 +0000)]
[demangler] call terminate() if allocation failed

We really should set *status to memory_alloc_failure, but we need to refactor
the demangler a bit to properly propagate the failure up the stack. Until then,
its better to explicitly terminate then rely on a null dereference crash.

rdar://31240372

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337759 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[MC] Add a separate flag for skipping comdat constant sections for MinGW. NFC.
Martin Storsjo [Mon, 23 Jul 2018 22:15:25 +0000 (22:15 +0000)]
[MC] Add a separate flag for skipping comdat constant sections for MinGW. NFC.

This actually has nothing to do with the associative comdat sections
that aren't supported by GNU binutils ld.

Clarify the comments from SVN r335918 and use a separate flag for it.

Differential Revision: https://reviews.llvm.org/D49645

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337757 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[COFF] Fix assembly output of comdat sections without an attached symbol
Martin Storsjo [Mon, 23 Jul 2018 22:15:19 +0000 (22:15 +0000)]
[COFF] Fix assembly output of comdat sections without an attached symbol

Since SVN r335286, the .xdata sections are produced without an attached
symbol, which requires using a different syntax when printing assembly
output.

Instead of the usual syntax of '.section <name>,"dr",discard,<symbol>',
use '.section <name>,"dr"' + '.linkonce discard' (which is what GCC
uses for all assembly output).

This fixes PR38254.

Differential Revision: https://reviews.llvm.org/D49651

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337756 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[AArch64] Use MCAsmInfoMicrosoft and MCAsmInfoGNUCOFF as base classes
Martin Storsjo [Mon, 23 Jul 2018 22:15:14 +0000 (22:15 +0000)]
[AArch64] Use MCAsmInfoMicrosoft and MCAsmInfoGNUCOFF as base classes

This matches the structure used on X86 and ARM. This requires
a little bit of duplication of the parts that are equal in both
AArch64 COFF variants though.

Before SVN r335286, these classes didn't add anything that MCAsmInfoCOFF
didn't, but now they do.

This makes AArch64 match X86 in how comdat is used for float constants
for MinGW.

Differential Revision: https://reviews.llvm.org/D49637

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337755 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[utils] Fix the llvm::Optional data formatter
Vedant Kumar [Mon, 23 Jul 2018 21:59:06 +0000 (21:59 +0000)]
[utils] Fix the llvm::Optional data formatter

The llvm::Optional data formatter needs to look through the `Storage`
container if it's present.

Before:

   220    if (Op && Op->getOp() != dwarf::DW_OP_LLVM_fragment)
-> 221      HasComplexExpression = true;
   222
   223    // If the register can only be described by a complex expression (i.e.,
   224    // multiple subregisters) it doesn't safely compose with another complex
Target 0: (llc) stopped.
(lldb) p Op
(llvm::Optional<llvm::DIExpression::ExprOperand>) $0 = None

After:

(lldb) p Op
(llvm::Optional<llvm::DIExpression::ExprOperand>) $0 =
(llvm::DIExpression::ExprOperand) storage = {
  Op = 0x000000010603d460
}

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337752 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[SelectionDAG] Reduce DanglingDebugInfo memory traffic, NFC
Vedant Kumar [Mon, 23 Jul 2018 21:59:04 +0000 (21:59 +0000)]
[SelectionDAG] Reduce DanglingDebugInfo memory traffic, NFC

This avoids approx. 2 x 10^5 DenseMap insertions in both non-debug and
debug -O2 builds of the sqlite3 amalgamation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337751 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[ThinLTO] Ensure the TargetLibraryInfo is constructed early enough
Teresa Johnson [Mon, 23 Jul 2018 21:58:19 +0000 (21:58 +0000)]
[ThinLTO] Ensure the TargetLibraryInfo is constructed early enough

Summary:
Without this change, the WholeProgramDevirt pass, which requires the
TargetLibraryInfo, will construct one from the default triple.

Fixes PR38139.

Reviewers: pcc

Subscribers: mehdi_amini, inglorion, steven_wu, dexonsmith, llvm-commits

Differential Revision: https://reviews.llvm.org/D49278

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337750 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[DebugCounters] Keep track of total counts
George Burgess IV [Mon, 23 Jul 2018 21:49:36 +0000 (21:49 +0000)]
[DebugCounters] Keep track of total counts

This patch makes debug counters keep track of the total number of times
we've called `shouldExecute` for each counter, so it's easier to build
automated tooling on top of these.

A patch to print these counts is coming soon.

Patch by Zhizhou Yang!

Differential Revision: https://reviews.llvm.org/D49560

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337748 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[gdb] Fix SmallVector pretty printer after r337514
Fangrui Song [Mon, 23 Jul 2018 21:33:51 +0000 (21:33 +0000)]
[gdb] Fix SmallVector pretty printer after r337514

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337747 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoConstantFolding: Avoid a crash.
Manoj Gupta [Mon, 23 Jul 2018 21:20:00 +0000 (21:20 +0000)]
ConstantFolding: Avoid a crash.

Summary:
Check if the parent basic block and caller exists
before calling CS.getCaller when constant folding
strip.invariant.group instrinsic.

This avoids a crash when the function containing the intrinsic
is being inlined. The instruction is checked for any simplifiction
but has not yet been added to a basic block.

Reviewers: Prazek, rsmith, efriedma

Reviewed By: efriedma

Subscribers: eraman, llvm-commits

Differential Revision: https://reviews.llvm.org/D49690

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337742 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoRe-land r335297 "[X86] Implement more of x86-64 large and medium PIC code models"
Reid Kleckner [Mon, 23 Jul 2018 21:14:35 +0000 (21:14 +0000)]
Re-land r335297 "[X86] Implement more of x86-64 large and medium PIC code models"

Don't try to generate large PIC code for non-ELF targets. Neither COFF
nor MachO have relocations for large position independent code, and
users have been using "large PIC" code models to JIT 64-bit code for a
while now. With this change, if they are generating ELF code, their
JITed code will truly be PIC, but if they target MachO or COFF, it will
contain 64-bit immediates that directly reference external symbols. For
a JIT, that's perfectly fine.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337740 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[llvm-mca][docs] Define IPC where it is first mentioned. NFC.
Matt Davis [Mon, 23 Jul 2018 21:10:50 +0000 (21:10 +0000)]
[llvm-mca][docs] Define IPC where it is first mentioned. NFC.

Expand the abbreviation where it is first used, and use IPC elsewhere.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337739 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoFix RegScavenger::unprocess
David Greene [Mon, 23 Jul 2018 20:23:50 +0000 (20:23 +0000)]
Fix RegScavenger::unprocess

RegScavenger::unprocess walks backward, so it should undo the effects
of defs before undoing effects of kills. Previously it did things in
the opposite order, leaving a register apparently unused (dead) in the
case where an instruction both used (killed) and defined a register.

Differential Revision: https://reviews.llvm.org/D42200

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337735 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAdd inline asm aliasing test.
Nirav Dave [Mon, 23 Jul 2018 20:19:10 +0000 (20:19 +0000)]
Add inline asm aliasing test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337734 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoRevert "[docs] Add support for Markdown documentation in Sphinx"
Michael J. Spencer [Mon, 23 Jul 2018 20:00:32 +0000 (20:00 +0000)]
Revert "[docs] Add support for Markdown documentation in Sphinx"

Looks like this bot hasn't been updated yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337731 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[docs] Add support for Markdown documentation in Sphinx
Michael J. Spencer [Mon, 23 Jul 2018 19:49:34 +0000 (19:49 +0000)]
[docs] Add support for Markdown documentation in Sphinx

Differential Revision: https://reviews.llvm.org/D44910

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337730 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[yaml2obj] Add default sh_entsize for dynamic sections
Paul Semel [Mon, 23 Jul 2018 18:49:04 +0000 (18:49 +0000)]
[yaml2obj] Add default sh_entsize for dynamic sections

Dynamic section holds a table, so the sh_entsize might be set. As the
dynamic section entry size never changes, we can default it to the size
of a dynamic entry.

Differential Revision: https://reviews.llvm.org/D49619

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337725 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[Hexagon] Handle unnamed globals in HexagonConstExpr
Krzysztof Parzyszek [Mon, 23 Jul 2018 18:30:17 +0000 (18:30 +0000)]
[Hexagon] Handle unnamed globals in HexagonConstExpr

Instead of comparing names, compare positions in the parent module.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337723 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[Demangle] Attempt to fix arena memory leak
Reid Kleckner [Mon, 23 Jul 2018 18:21:43 +0000 (18:21 +0000)]
[Demangle] Attempt to fix arena memory leak

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337720 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoFixing a typo; NFC.
Aaron Ballman [Mon, 23 Jul 2018 18:09:43 +0000 (18:09 +0000)]
Fixing a typo; NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337719 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[lit] Move the shtest-xunit-output check lines into shtest-format
Justin Bogner [Mon, 23 Jul 2018 18:08:36 +0000 (18:08 +0000)]
[lit] Move the shtest-xunit-output check lines into shtest-format

These two tests are operating on the same test suite, which causes
them to be racy about writing temporary files and can cause spurious
failures. Merge them into one test to avoid the issue.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337718 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[ARM] Use unique_ptr to fix memory leak introduced in r337701
Fangrui Song [Mon, 23 Jul 2018 17:43:21 +0000 (17:43 +0000)]
[ARM] Use unique_ptr to fix memory leak introduced in r337701

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337714 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoOpChain has subclasses, so add a virtual destructor.
Jordan Rupprecht [Mon, 23 Jul 2018 17:38:05 +0000 (17:38 +0000)]
OpChain has subclasses, so add a virtual destructor.

Summary:
OpChain has subclasses, so add a virtual destructor.

This fixes an issue when deleting subclasses of OpChain (see MatchSMLAD() specifically) in r337701.

Reviewers: javed.absar

Subscribers: llvm-commits, SjoerdMeijer, samparker

Differential Revision: https://reviews.llvm.org/D49681

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337713 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[ARM] Follow-up to r337709.
Matt Morehouse [Mon, 23 Jul 2018 17:22:53 +0000 (17:22 +0000)]
[ARM] Follow-up to r337709.

Fix double-free.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337711 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[ARM] Add doFinalization() to ARMCodeGenPrepare pass.
Matt Morehouse [Mon, 23 Jul 2018 17:00:45 +0000 (17:00 +0000)]
[ARM] Add doFinalization() to ARMCodeGenPrepare pass.

Attempt to fix the leak introduced in r337687 and make sanitizer
buildbots green again.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337709 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[Legalize] Elide MERGE_VALUES created by scalarizeVectorLoad.
Nirav Dave [Mon, 23 Jul 2018 16:43:42 +0000 (16:43 +0000)]
[Legalize] Elide MERGE_VALUES created by scalarizeVectorLoad.

scalarizeVectorLoad creates MERGE_VALUES nodes which are immediately
decomposed in expandLoad. Elide the node in these cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337708 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[mips] Add more checks to the tls.ll test case. NFC
Simon Atanasyan [Mon, 23 Jul 2018 16:05:44 +0000 (16:05 +0000)]
[mips] Add more checks to the tls.ll test case. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337705 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[ARM][NFC] ParallelDSP reorganisation
Sam Parker [Mon, 23 Jul 2018 15:25:59 +0000 (15:25 +0000)]
[ARM][NFC] ParallelDSP reorganisation

In preparing to allow ARMParallelDSP pass to parallelise more than
smlads, I've restructed some elements:

- The ParallelMAC struct has been renamed to BinOpChain.
- The BinOpChain struct holds two value lists: LHS and RHS, as well
  as inheriting from the OpChain base class.
- The OpChain struct holds all the values of the represented chain
  and has had the memory locations functionality inserted into it.
- ParallelMACList becomes OpChainList and it now holds pointers
  instead of objects.

Differential Revision: https://reviews.llvm.org/D49020

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337701 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[SystemZ] Fix dumpSU() method in SystemZHazardRecognizer.
Jonas Paulsson [Mon, 23 Jul 2018 15:08:35 +0000 (15:08 +0000)]
[SystemZ]  Fix dumpSU() method in SystemZHazardRecognizer.

Two minor issues: The new MCD SchedWrite name does not contain "Unit" like
all the others, so a check is needed. Also, print "LSU" instead of "LS".

Review: Ulrich Weigand

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337700 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[FPEnv] Legalize double width StrictFP vector operations
Cameron McInally [Mon, 23 Jul 2018 14:40:17 +0000 (14:40 +0000)]
[FPEnv] Legalize double width StrictFP vector operations

Differential Revision: https://reviews.llvm.org/D48809

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337698 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[Docs] Fix LLVM_YAML_IS_DOCUMENT_LIST_VECTOR
Jonas Devlieghere [Mon, 23 Jul 2018 14:17:43 +0000 (14:17 +0000)]
[Docs] Fix LLVM_YAML_IS_DOCUMENT_LIST_VECTOR

The docs incorrectly said to repeat std::vector inside
LLVM_YAML_IS_DOCUMENT_LIST_VECTOR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337695 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[ARM] ARMCodeGenPrepare backend pass
Sam Parker [Mon, 23 Jul 2018 12:27:47 +0000 (12:27 +0000)]
[ARM] ARMCodeGenPrepare backend pass

Arm specific codegen prepare is implemented to perform type promotion
on icmp operands, which can enable the removal of uxtb and uxth
(unsigned extend) instructions. This is possible because performing
type promotion before ISel alleviates this duty from the DAG builder
which has to perform legalisation, but has a limited view on data
ranges.

The pass visits any instruction operand of an icmp and creates a
worklist to traverse the use-def tree to determine whether the values
can simply be promoted. Our concern is values in the registers
overflowing the narrow (i8, i16) data range, so instructions marked
with nuw can be promoted easily. For add and sub instructions, we are
able to use the parallel dsp instructions to operate on scalar data
types and avoid overflowing bits. Underflowing adds and subs are also
permitted when the result is only used by an unsigned icmp.

Differential Revision: https://reviews.llvm.org/D48832

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337687 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[GVN] Don't use the eliminated load as an available value in phi construction
John Brawn [Mon, 23 Jul 2018 12:14:45 +0000 (12:14 +0000)]
[GVN] Don't use the eliminated load as an available value in phi construction

In ConstructSSAForLoadSet if an available value is actually the load that we're
doing SSA construction to eliminate, then we can omit it as SSAUpdate will add
in the value for the phi that will be replacing it anyway. This can result in
simpler IR which can allow further optimisation.

Differential Revision: https://reviews.llvm.org/D44160

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337686 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[MemorySSAUpdater] Update Phi operands after trivial Phi elimination
Alexandros Lamprineas [Mon, 23 Jul 2018 10:56:30 +0000 (10:56 +0000)]
[MemorySSAUpdater] Update Phi operands after trivial Phi elimination

Bug fix for PR37445. The underlying problem and its fix are similar to PR37808.
The bug lies in MemorySSAUpdater::getPreviousDefRecursive(), where PhiOps is
computed before the call to tryRemoveTrivialPhi() and it ends up being out of
date, pointing to stale data. We have now turned each of the PhiOps into a
TrackingVH<MemoryAccess>.

Differential Revision: https://reviews.llvm.org/D49425

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337680 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[Support] Add a UniqueStringSaver: like StringSaver, but deduplicating.
Sam McCall [Mon, 23 Jul 2018 10:44:40 +0000 (10:44 +0000)]
[Support] Add a UniqueStringSaver: like StringSaver, but deduplicating.

Summary: Clarify contract of StringSaver (it null-terminates, callers rely on it).

Reviewers: hokein

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D49596

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337677 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[NFC][MCA] ZnVer1: Update RegisterFile to identify false dependencies on partially...
Roman Lebedev [Mon, 23 Jul 2018 10:10:13 +0000 (10:10 +0000)]
[NFC][MCA] ZnVer1: Update RegisterFile to identify false dependencies on partially written registers.

Summary:
Pretty mechanical follow-up for D49196.

As microarchitecture.pdf notes, "20 AMD Ryzen pipeline",
"20.8 Register renaming and out-of-order schedulers":
  The integer register file has 168 physical registers of 64 bits each.
  The floating point register file has 160 registers of 128 bits each.
"20.14 Partial register access":
  The processor always keeps the different parts of an integer register together.
  ...
  An instruction that writes to part of a register will therefore have a false dependence
  on any previous write to the same register or any part of it.

Reviewers: andreadb, courbet, RKSimon, craig.topper, GGanesh

Reviewed By: GGanesh

Subscribers: gbedwell, llvm-commits

Differential Revision: https://reviews.llvm.org/D49393

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337676 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[NFC][MCA] ZnVer1: add partial-reg-update tests
Roman Lebedev [Mon, 23 Jul 2018 10:10:04 +0000 (10:10 +0000)]
[NFC][MCA] ZnVer1: add partial-reg-update tests

Reviewers: andreadb, courbet, RKSimon, craig.topper, GGanesh

Reviewed By: GGanesh

Subscribers: gbedwell, llvm-commits

Differential Revision: https://reviews.llvm.org/D49392

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337675 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[GVNHoist] safeToHoistLdSt allows illegal hoisting
Alexandros Lamprineas [Mon, 23 Jul 2018 09:42:35 +0000 (09:42 +0000)]
[GVNHoist] safeToHoistLdSt allows illegal hoisting

Bug fix for PR36787. When reasoning if it's safe to hoist a load we
want to make sure that the defining memory access dominates the new
insertion point of the hoisted instruction. safeToHoistLdSt calls
firstInBB(InsertionPoint,DefiningAccess) which returns false if
InsertionPoint == DefiningAccess, and therefore it falsely thinks
it's safe to hoist.

Differential Revision: https://reviews.llvm.org/D49555

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337674 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[x86/SLH] Fix a bug where we would harden tail calls twice -- once as
Chandler Carruth [Mon, 23 Jul 2018 07:56:15 +0000 (07:56 +0000)]
[x86/SLH] Fix a bug where we would harden tail calls twice -- once as
a call, and then again as a return.

Also added a comment to try and explain better why we would be doing
what we're doing when hardening the (non-call) returns.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337673 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[x86/SLH] Add a test covering indirect forms of control flow. NFC.
Chandler Carruth [Mon, 23 Jul 2018 07:51:51 +0000 (07:51 +0000)]
[x86/SLH] Add a test covering indirect forms of control flow. NFC.

This specifically covers different ways of making indirect calls and
jumps. There are some bugs in SLH that I will be fixing in subsequent
patches where the diff in the generated instructions makes the bug fix
much more clear, so just checking in a baseline of this test to start.

I'm also going to be adding direct mitigation for variant 1.2 which this
file very specifically tests in the various forms it can arise on x86.
Again, the diff to the generated instructions should make the change for
that much more clear, so having the test as a baseline seems useful.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337672 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[x86/SLH] Rename and comment the main hardening function. NFC.
Chandler Carruth [Mon, 23 Jul 2018 04:01:34 +0000 (04:01 +0000)]
[x86/SLH] Rename and comment the main hardening function. NFC.

This provides an overview of the algorithm used to harden specific
loads. It also brings this our terminology further in line with
hardening rather than checking.

Differential Revision: https://reviews.llvm.org/D49583

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337667 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoTest commit, fix a minor typo.
Jiading Gai [Sun, 22 Jul 2018 20:04:42 +0000 (20:04 +0000)]
Test commit, fix a minor typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337657 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Remove the max vector width restriction from combineLoopMAddPattern and rely...
Craig Topper [Sun, 22 Jul 2018 19:44:35 +0000 (19:44 +0000)]
[X86] Remove the max vector width restriction from combineLoopMAddPattern and rely splitOpsAndApply to handle splitting.

This seems to be a net improvement. There's still an issue under avx512f where we have a 512-bit vpaddd, but not vpmaddwd so we end up doing two 256-bit vpmaddwds and inserting the results before a 512-bit vpaddd. It might be better to do two 512-bits paddds with zeros in the upper half. Same number of instructions, but breaks a dependency.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337656 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[ORE] Move loop invariant ORE checks outside the PM loop.
Xin Tong [Sun, 22 Jul 2018 05:27:41 +0000 (05:27 +0000)]
[ORE] Move loop invariant ORE checks outside the PM loop.

Summary:
This takes 22ms out of ~20s compiling sqlite3.c because we call it
for every unit of compilation and every pass.

Reviewers: paquette, anemet

Subscribers: mehdi_amini, llvm-commits

Differential Revision: https://reviews.llvm.org/D49586

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337654 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[SelectionDAGBuilder] Use APInt::isZero instead of comparing APInt::getZExtValue...
Craig Topper [Sun, 22 Jul 2018 05:16:50 +0000 (05:16 +0000)]
[SelectionDAGBuilder] Use APInt::isZero instead of comparing APInt::getZExtValue to 0 in a place where we can't be sure contents of the APInt fit in a uint64_t.

This is used on an extract vector element index which is most cases is going to be an i32 or i64 and the element will be a valid element number. But it is possible to construct IR with a larger type and large out of range value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337652 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[SelectionDAGBuilder] Restrict vector reduction check to types with a power of 2...
Craig Topper [Sun, 22 Jul 2018 05:16:49 +0000 (05:16 +0000)]
[SelectionDAGBuilder] Restrict vector reduction check to types with a power of 2 number of elements.

The check for the shuffles usages probably isn't correct for non power of 2 vectors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337651 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Add more MADD recurrence test cases with larger and narrower vector widths.
Craig Topper [Sun, 22 Jul 2018 05:16:47 +0000 (05:16 +0000)]
[X86] Add more MADD recurrence test cases with larger and narrower vector widths.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337650 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[llvm-mca][docs] Add documentation for the statistic outputs from mca. NFC
Matt Davis [Sat, 21 Jul 2018 18:32:47 +0000 (18:32 +0000)]
[llvm-mca][docs] Add documentation for the statistic outputs from mca. NFC

Summary: The original text was lifted from the MCA README.  I re-ran the dot-product example and updated the output seen in the docs.  I also added a few paragraphs discussing the instruction issued and retired histograms, as well as discussing the register file stats.

Reviewers: andreadb, RKSimon, courbet, gbedwell, filcab

Reviewed By: andreadb

Subscribers: tschuett

Differential Revision: https://reviews.llvm.org/D49614

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337648 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[mips] Factor out register class selection for global base register. NFC
Simon Atanasyan [Sat, 21 Jul 2018 16:16:08 +0000 (16:16 +0000)]
[mips] Factor out register class selection for global base register. NFC

Factor out register class selection for global base register into a
separate function to escape long chain of ternary operators.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337647 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[mips] Move out the WrapperPat declaration from the NotInMicroMips predicate
Simon Atanasyan [Sat, 21 Jul 2018 16:16:03 +0000 (16:16 +0000)]
[mips] Move out the WrapperPat declaration from the NotInMicroMips predicate

This is a follow-up to the rL335185. Those commit adds some WrapperPat
patterns for microMIPS target. But declaration of the WrapperPat class
is under the NotInMicroMips predicate and microMIPS patterns cannot be
selected because predicate (Subtarget->inMicroMipsMode()) &&
(!Subtarget->inMicroMipsMode()) is always false.

This change move out the WrapperPat class declaration from the
NotInMicroMips predicate and enables microMIPS WrapperPat patterns.

Differential revision: https://reviews.llvm.org/D49533

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337646 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[llvm-undname] Flush output before demangling.
Zachary Turner [Sat, 21 Jul 2018 15:39:05 +0000 (15:39 +0000)]
[llvm-undname] Flush output before demangling.

If an error occurs and we write it to stderr, it could appear
before we wrote the mangled name which we're undecorating.
By flushing stdout first, we ensure that the messages are always
sequenced in the correct order.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337645 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoFix the MSVC Visualizers for SmallVector classes.
Zachary Turner [Sat, 21 Jul 2018 15:38:47 +0000 (15:38 +0000)]
Fix the MSVC Visualizers for SmallVector classes.

Recent changes to the internal structure of SmallVector<> broke
all of the MSVC visualizers.  This fixes them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337644 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoEarly exit with cheaper checks
Aditya Kumar [Sat, 21 Jul 2018 14:13:44 +0000 (14:13 +0000)]
Early exit with cheaper checks

Reviewers: sebpop,davide,fhahn,trentxintong
Differential Revision: https://reviews.llvm.org/D49617

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337643 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[InstrSimplify] fold sdiv if two operands are negated and non-overflow
Chen Zheng [Sat, 21 Jul 2018 12:27:54 +0000 (12:27 +0000)]
[InstrSimplify] fold sdiv if two operands are negated and non-overflow

Differential Revision: https://reviews.llvm.org/D49382

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337642 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[DebugInfo] Add a new DI flag to record if a C++ record is a trivial type
Aaron Smith [Sat, 21 Jul 2018 05:42:13 +0000 (05:42 +0000)]
[DebugInfo] Add a new DI flag to record if a C++ record is a trivial type

Summary:
This flag is used when emitting debug info and is needed to initialize subprogram and member function attributes (function options) for Codeview. These function options are used to create an accurate compiler type for UDT symbols (class/struct/union) from PDBs.

It is not easy to determine if a C++ record is trivial or not based on the current DICompositeType flags and other accessible debug information from Codeview. For example, without this flag the metadata for a non-trivial C++ record with user-defined ctor and a trivial one with a defaulted ctor are the same.

    struct S { S(); }
    struct S { S() = default; }

This change introduces a new DI flag and corresponding clang::CXXRecordDecl::isTrivial method to set the flag in the frontend.

Reviewers: rnk, zturner, llvm-commits, dblaikie, aleksandr.urakov, deadalnix

Reviewed By: rnk

Subscribers: asmith, probinson, aprantl, JDevlieghere

Differential Revision: https://reviews.llvm.org/D45122

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337641 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[ORC] Re-apply r336760 with fixes.
Lang Hames [Sat, 21 Jul 2018 00:12:05 +0000 (00:12 +0000)]
[ORC] Re-apply r336760 with fixes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337637 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoRe-apply r337595 with fix for LLVM_ENABLE_THREADS=Off.
Lang Hames [Fri, 20 Jul 2018 22:22:19 +0000 (22:22 +0000)]
Re-apply r337595 with fix for LLVM_ENABLE_THREADS=Off.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337626 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[ADT] Only run death tests in !NDEBUG
Benjamin Kramer [Fri, 20 Jul 2018 22:15:09 +0000 (22:15 +0000)]
[ADT] Only run death tests in !NDEBUG

These invoke undefined behavior.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337625 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[Hexagon] Disable packets in test to avoid ordering issues in checks
Krzysztof Parzyszek [Fri, 20 Jul 2018 21:55:55 +0000 (21:55 +0000)]
[Hexagon] Disable packets in test to avoid ordering issues in checks

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337624 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoChange the cap on the amount of padding for each vtable to 32-byte (previously it...
Peter Collingbourne [Fri, 20 Jul 2018 21:43:20 +0000 (21:43 +0000)]
Change the cap on the amount of padding for each vtable to 32-byte (previously it was 128-byte)

We tested different cap values with a recent commit of Chromium. Our results show that the 32-byte cap yields the smallest binary and all the caps yield similar performance.
Based on the results, we propose to change the cap value to 32-byte.

Patch by Zhaomo Yang!

Differential Revision: https://reviews.llvm.org/D49405

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337622 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAMDGPU: Use existing function to check for VGPRs
Matt Arsenault [Fri, 20 Jul 2018 21:20:36 +0000 (21:20 +0000)]
AMDGPU: Use existing function to check for VGPRs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337621 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoRevert "[X86][AVX] Convert X86ISD::VBROADCAST demanded elts combine to use SimplifyDe...
Benjamin Kramer [Fri, 20 Jul 2018 20:59:46 +0000 (20:59 +0000)]
Revert "[X86][AVX] Convert X86ISD::VBROADCAST demanded elts combine to use SimplifyDemandedVectorElts"

This reverts commit r337547. It triggers an infinite loop.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337617 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[llvm-undname] Remove a superfluous semicolon. NFC.
Martin Storsjo [Fri, 20 Jul 2018 20:48:36 +0000 (20:48 +0000)]
[llvm-undname] Remove a superfluous semicolon. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337615 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[COFF] Use symbolic constants instead of hardcoded numbers. NFCI.
Martin Storsjo [Fri, 20 Jul 2018 20:48:33 +0000 (20:48 +0000)]
[COFF] Use symbolic constants instead of hardcoded numbers. NFCI.

Patch by Martell Malone.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337614 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[COFF] Adjust how we flag weak externals
Martin Storsjo [Fri, 20 Jul 2018 20:48:29 +0000 (20:48 +0000)]
[COFF] Adjust how we flag weak externals

This fixes PR36096.

Originally based on a patch by Martell Malone.

Differential Revision: https://reviews.llvm.org/D44357

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337613 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[FileCheck] Provide an option for FileCheck to dump original input to stderr on failure
George Karpenkov [Fri, 20 Jul 2018 20:21:57 +0000 (20:21 +0000)]
[FileCheck] Provide an option for FileCheck to dump original input to stderr on failure

The option can be either set using environment variable (e.g. env
FILECHECK_DUMP_INPUT_ON_FAILURE=1 ninja check-fuzzer) or with a
FileCheck flag.

This can be extremely useful for debugging, cf.
https://groups.google.com/forum/#!topic/llvm-dev/kLrzg8OM_h8 for
discussion.

Differential Revision: https://reviews.llvm.org/D49328

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337609 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoRevert r337595 "[ORC] Add new symbol lookup methods to ExecutionSessionBase in prepar...
Reid Kleckner [Fri, 20 Jul 2018 20:20:45 +0000 (20:20 +0000)]
Revert r337595 "[ORC] Add new symbol lookup methods to ExecutionSessionBase in preparation for"

Breaks the build with LLVM_ENABLE_THREADS=OFF.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337608 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoReapply "[LSV] Refactoring + supporting bitcasts to a type of different size"
Roman Tereshin [Fri, 20 Jul 2018 20:10:04 +0000 (20:10 +0000)]
Reapply "[LSV] Refactoring + supporting bitcasts to a type of different size"

This reapplies commit r337489 reverted by r337541
Additionally, this commit contains a speculative fix to the issue reported in r337541
(the report does not contain an actionable reproducer, just a stack trace)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337606 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[FileCheck] Fix search ranges for DAG-NOT-DAG
Joel E. Denny [Fri, 20 Jul 2018 20:09:56 +0000 (20:09 +0000)]
[FileCheck] Fix search ranges for DAG-NOT-DAG

A DAG-NOT-DAG is a CHECK-DAG group, X, followed by a CHECK-NOT group,
N, followed by a CHECK-DAG group, Y.  Let y be the initial directive
of Y.  This patch makes the following changes to the behavior:

    1. Directives in N can no longer match within part of Y's match
       range just because y happens not to be the earliest match from
       Y.  Specifically, this patch withdraws N's search range end
       from y's match range start to Y's match range start.

    2. y can no longer match within X's match range, where a y match
       produced a reordering complaint, which is thus no longer
       possible.  Specifically, this patch withdraws y's search range
       start from X's permitted range start to X's match range end,
       which was already the search range start for other members of
       Y.

Both of these changes can only increase the number of test passes: #1
constrains the ability of CHECK-NOTs to match, and #2 expands the
ability of CHECK-DAGs to match without complaints.

These changes are based on discussions at:

   <http://lists.llvm.org/pipermail/llvm-dev/2018-May/123550.html>
   <https://reviews.llvm.org/D47106>

which conclude that:

    1. These changes simplify the FileCheck conceptual model.  First,
       it makes search ranges for DAG-NOT-DAG more consistent with
       other cases.  Second, it was confusing that y was treated
       differently from the rest of Y.

    2. These changes add theoretical use cases for DAG-NOT-DAG that
       had no obvious means to be expressed otherwise.  We can justify
       the first half of this assertion with the observation that
       these changes can only increase the number of test passes.

    3. Reordering detection for DAG-NOT-DAG had no obvious real
       benefit.

We don't have evidence from real uses cases to help us debate
conclusions #2 and #3, but #1 at least seems intuitive.

Reviewed By: probinson

Differential Revision: https://reviews.llvm.org/D48986

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337605 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[llvm-objcopy] Add basic support for --rename-section
Jordan Rupprecht [Fri, 20 Jul 2018 19:54:24 +0000 (19:54 +0000)]
[llvm-objcopy] Add basic support for --rename-section

Summary:
Add basic support for --rename-section=old=new to llvm-objcopy.

A full replacement for GNU objcopy requires also modifying flags (i.e. --rename-section=old=new,flag1,flag2); I'd like to keep that in a separate change to keep this simple.

Reviewers: jakehehrlich, alexshap

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D49576

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337604 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAnd add a lit substitution for llvm-undname, as the comment says to
Reid Kleckner [Fri, 20 Jul 2018 18:45:01 +0000 (18:45 +0000)]
And add a lit substitution for llvm-undname, as the comment says to

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337600 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoRemove a superfluous semicolon
Martin Storsjo [Fri, 20 Jul 2018 18:43:42 +0000 (18:43 +0000)]
Remove a superfluous semicolon

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337599 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoMake check-llvm depend on llvm-undname
Reid Kleckner [Fri, 20 Jul 2018 18:42:19 +0000 (18:42 +0000)]
Make check-llvm depend on llvm-undname

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337597 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[Demangler] Correctly factor in assignment when allocating.
Zachary Turner [Fri, 20 Jul 2018 18:35:06 +0000 (18:35 +0000)]
[Demangler] Correctly factor in assignment when allocating.

Incidentally all allocations that we currently perform were
properly aligned, but this was only an accident.

Thanks to Erik Pilkington for catching this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337596 91177308-0d34-0410-b5e6-96231b3b80d8