platform/upstream/llvm.git
4 years ago[gn build] Port 00255f41929
LLVM GN Syncbot [Fri, 23 Oct 2020 16:19:55 +0000 (16:19 +0000)]
[gn build] Port 00255f41929

4 years ago[AMDGPU] Fix access beyond the end of the basic block in execMayBeModifiedBeforeAnyUse.
vpykhtin [Wed, 14 Oct 2020 11:47:18 +0000 (14:47 +0300)]
[AMDGPU] Fix access beyond the end of the basic block in execMayBeModifiedBeforeAnyUse.

I was wrong in thinking that MRI.use_instructions return unique instructions and mislead Jay in his previous patch D64393.

First loop counted more instructions than it was in reality and the second loop went beyond the basic block with that counter.

I used Jay's previous code that relied on MRI.use_operands to constrain the number of instructions to check among.
modifiesRegister is inlined to reduce the number of passes over instruction operands and added assert on BB end boundary.

Differential Revision: https://reviews.llvm.org/D89386

4 years ago[clangd] Fix remote-server build and add it to check-clangd
Kadir Cetinkaya [Fri, 23 Oct 2020 14:36:52 +0000 (16:36 +0200)]
[clangd] Fix remote-server build and add it to check-clangd

Differential Revision: https://reviews.llvm.org/D90047

4 years ago[WebAssembly] Implementation of (most) table instructions
Paulo Matos [Fri, 23 Oct 2020 15:36:06 +0000 (08:36 -0700)]
[WebAssembly] Implementation of (most) table instructions

Implementation of instructions table.get, table.set, table.grow,
table.size, table.fill, table.copy.

Missing instructions are table.init and elem.drop as they deal with
element sections which are not yet implemented.

Added more tests to tables.s

Differential Revision: https://reviews.llvm.org/D89797

4 years ago[flang][OpenMP] Upstream lowering of OpenMP `Flush` construct
Sourabh Singh Tomar [Fri, 23 Oct 2020 14:59:12 +0000 (20:29 +0530)]
[flang][OpenMP] Upstream lowering of OpenMP `Flush` construct

Note: This patch reflects the work that can be upstreamed from PR's(merged):

- https://github.com/flang-compiler/f18-llvm-project/pull/476

Reviewed By: kiranchandramohan, clementval

Differential Revision: https://reviews.llvm.org/D90048

4 years ago[DebugInstrRef] Handle DBG_INSTR_REFs use-before-defs in LiveDebugValues
Jeremy Morse [Fri, 23 Oct 2020 13:53:15 +0000 (14:53 +0100)]
[DebugInstrRef] Handle DBG_INSTR_REFs use-before-defs in LiveDebugValues

Deciding where to place debugging instructions when normal instructions
sink between blocks is difficult -- see PR44117. Dealing with this with
instruction-referencing variable locations is simple: we just tolerate
DBG_INSTR_REFs referring to values that haven't been computed yet. This
patch adds support into InstrRefBasedLDV to record when a variable value
appears in the middle of a block, and should have a DBG_VALUE added when it
appears (a debug use before def).

While described simply, this relies heavily on the value-propagation
algorithm in InstrRefBasedLDV. The implementation doesn't attempt to verify
the location of a value unless something non-trivial occurs to merge
variable values in vlocJoin. This means that a variable with a value that
has no location can retain it across all control flow (including loops).
It's only when another debug instruction specifies a different variable
value that we have to check, and find there's no location.

This property means that if a machine value is defined in a block dominated
by a DBG_INSTR_REF that refers to it, all the successor blocks can
automatically find a location for that value (if it's not clobbered). Thus
in a sense, InstrRefBasedLDV is already supporting and implementing
use-before-defs. This patch allows us to specify a variable location in the
block where it's defined.

When loading live-in variable locations, TransferTracker currently discards
those where it can't find a location for the variable value. However, we
can tell from the machine value number whether the value is defined in this
block. If it is, add it to a set of use-before-def records. Then, once the
relevant instruction has been processed, emit a DBG_VALUE immediately after
it.

Differential Revision: https://reviews.llvm.org/D85775

4 years ago[AMDGPU] Add simplification/combines for llvm.amdgcn.fma.legacy
Jay Foad [Fri, 23 Oct 2020 11:52:14 +0000 (12:52 +0100)]
[AMDGPU] Add simplification/combines for llvm.amdgcn.fma.legacy

This follows on from D89558 which added the new intrinsic and D88955
which added similar combines for llvm.amdgcn.fmul.legacy.

Differential Revision: https://reviews.llvm.org/D90028

4 years agoRevert "[Statepoints] Allow deopt GC pointer on VReg if gc-live bundle is empty."
Denis Antrushin [Fri, 23 Oct 2020 14:55:06 +0000 (21:55 +0700)]
Revert "[Statepoints] Allow deopt GC pointer on VReg if gc-live bundle is empty."

Downstream testing revealed some problems with this patch.
Reverting while investigating.
This reverts commit 2b96dcebfae65485859d956954f10f409abaae79.

4 years agoCfgInterface: rename interface() to getInterface()
Nicolai Hähnle [Fri, 23 Oct 2020 14:49:34 +0000 (16:49 +0200)]
CfgInterface: rename interface() to getInterface()

Apparently there are some Microsoft headers which
`#define interface struct`. This method is only used
in pending changes so far.

Change-Id: Ic68fe8e1958ec9b015f817ee218431f4146b888a

4 years ago[flang][OpenMP] Upstream lowering of `ParallelOp` clauses
Sourabh Singh Tomar [Tue, 20 Oct 2020 06:38:27 +0000 (12:08 +0530)]
[flang][OpenMP] Upstream lowering of `ParallelOp` clauses

Note: This patch reflects the work that can be upstreamed from PR's(merged):

1. https://github.com/flang-compiler/f18-llvm-project/pull/456
2. https://github.com/flang-compiler/f18-llvm-project/pull/485

Also replaced TODO with new TODO.

Reviewed By: kiranchandramohan

Differential Revision: https://reviews.llvm.org/D89769

4 years ago[InstCombine] Add i8 bitreverse by multiplication test patterns
Simon Pilgrim [Fri, 23 Oct 2020 14:39:37 +0000 (15:39 +0100)]
[InstCombine] Add i8 bitreverse by multiplication test patterns

Pulled from bit twiddling hacks webpage

4 years ago[InstCombine] Add 8/16/32/64 bitreverse test coverage
Simon Pilgrim [Fri, 23 Oct 2020 14:29:41 +0000 (15:29 +0100)]
[InstCombine] Add 8/16/32/64 bitreverse test coverage

Use typical codegen for the traditional pairwise lgN bitreverse algorithm

4 years ago[InstCombine] Add initial bitreverse test coverage
Simon Pilgrim [Fri, 23 Oct 2020 13:31:18 +0000 (14:31 +0100)]
[InstCombine] Add initial bitreverse test coverage

4 years ago[TableGen] Change !getop and !setop to !getdagop and !setdagop.
Paul C. Anagnostopoulos [Tue, 20 Oct 2020 17:50:49 +0000 (13:50 -0400)]
[TableGen] Change !getop and !setop to !getdagop and !setdagop.

Differential Revision: https://reviews.llvm.org/D89814

4 years agoAMDGPU: Don't query for TII in TII
Matt Arsenault [Thu, 22 Oct 2020 22:20:19 +0000 (18:20 -0400)]
AMDGPU: Don't query for TII in TII

4 years agoAMDGPU: Increase branch size estimate with offset bug
Matt Arsenault [Fri, 23 Oct 2020 00:08:59 +0000 (20:08 -0400)]
AMDGPU: Increase branch size estimate with offset bug

This will be relaxed to insert a nop if the offset hits the bad value,
so over estimate branch instruction sizes.

4 years ago[flang][openacc] Fix semantic check for wait and atomic directives
Valentin Clement [Fri, 23 Oct 2020 14:31:33 +0000 (10:31 -0400)]
[flang][openacc] Fix semantic check for wait and atomic directives

wait and atomic directives are represented by OpenACCWaitConstruct, OpenACCAtmicConstruct in the parser. Those contrsuct were
not taken into account in the semantic check so far.

Reviewed By: kiranchandramohan

Differential Revision: https://reviews.llvm.org/D88628

4 years agoExport TemplateArgumentMatcher so clients defining custom matchers don't need to...
David Van Cleve [Fri, 23 Oct 2020 14:01:58 +0000 (16:01 +0200)]
Export TemplateArgumentMatcher so clients defining custom matchers don't need to use the internal namespace

This change adds another export, `using TemplateArgumentMatcher = internal::Matcher<TemplateArgument>;`, to the collection of exports that put instantiations of the `clang::ast_matchers::internal::Matcher` into the `clang::ast_matchers` namespace. This makes it possible to define custom TemplateArgument matchers without reaching into the `internal` namespace.

Reviewed By: klimek

Differential Revision: https://reviews.llvm.org/D89920

4 years ago[MLIR] Fix bad merge with buffer alias analysis.
Frederik Gossen [Fri, 23 Oct 2020 14:10:10 +0000 (14:10 +0000)]
[MLIR] Fix bad merge with buffer alias analysis.

4 years ago[llvm-mca] Extend cortex-a57 memory instructions test
Evgeny Leviant [Fri, 23 Oct 2020 14:02:20 +0000 (17:02 +0300)]
[llvm-mca] Extend cortex-a57 memory instructions test

Patch adds few/load store instructions which have custom sched
classes in cortex-a57 model.

4 years ago[DebugInstrRef] Convert DBG_INSTR_REFs into variable locations
Jeremy Morse [Fri, 23 Oct 2020 13:06:39 +0000 (14:06 +0100)]
[DebugInstrRef] Convert DBG_INSTR_REFs into variable locations

Handle DBG_INSTR_REF instructions in LiveDebugValues, to determine and
propagate variable locations. The logic is fairly straight forwards:
Collect a map of debug-instruction-number to the machine value numbers
generated in the first walk through the function. When building the
variable value transfer function and we see a DBG_INSTR_REF, look up the
instruction it refers to, and pick the machine value number it generates,
That's it; the rest of LiveDebugValues continues as normal.

Awkwardly, there are two kinds of instruction numbering happening here: the
offset into the block (which is how machine value numbers are determined),
and the numbers that we label instructions with when generating
DBG_INSTR_REFs.

I've also restructured the TransferTracker redefVar code a little, to
separate some DBG_VALUE specific operations into its own method. The
changes around redefVar should be largely NFC, while allowing
DBG_INSTR_REFs to specify a value number rather than just a location.

Differential Revision: https://reviews.llvm.org/D85771

4 years ago[gn build] port 48e4b0f (__config_site revert)
Nico Weber [Fri, 23 Oct 2020 13:44:56 +0000 (09:44 -0400)]
[gn build] port 48e4b0f (__config_site revert)

This reverts commit b3ca53e14274642274be8fe7db8b43dc3c146366.
This reverts commit 8b7dac81d378c339d3e55f6f51cd0c42803903ad.
This reverts commit 37c030f81a9fdd7a7e1b6fa5407b277c1ab1afa1.

4 years ago[runtimes] Revert the libc++ __config_site change
Louis Dionne [Fri, 23 Oct 2020 13:32:50 +0000 (09:32 -0400)]
[runtimes] Revert the libc++ __config_site change

This is a massive revert of the following commits (from most revent to oldest):

2b9b7b5775a1d8fcd7aa5abaa8fc0bc303434f1a.
529ac33197f6408952ae995075ac5e2dc5287e81
28270234f1478047e35879f4ba8838b47edfcc14
69c2087283cf7b17ca75f69daebf4ffc158b754a
b5aa67446e01bd277727b05710a42e69ac41e74b
5d796645d6c8cadeb003715c33e231a8ba05b6de

After checking-in the __config_site change, a lot of things started breaking
due to widespread reliance on various aspects of libc++'s build, notably the
fact that we can include the headers from the source tree, but also reliance
on various "internal" CMake variables used by the runtimes build and compiler-rt.

These were unintended consequences of the change, and after two days, we
still haven't restored all the bots to being green. Instead, now that I
understand what specific areas this will blow up in, I should be able to
chop up the patch into smaller ones that are easier to digest.

See https://reviews.llvm.org/D89041 for more details on this adventure.

4 years ago[LSR] ignore profitable chain when reg num is not major cost.
Chen Zheng [Wed, 21 Oct 2020 03:25:27 +0000 (23:25 -0400)]
[LSR] ignore profitable chain when reg num is not major cost.

Reviewed By: samparker

Differential Revision: https://reviews.llvm.org/D89665

4 years ago[clangd] Drop version from remote index proto names, fix clangd-index-server
Sam McCall [Fri, 23 Oct 2020 13:26:24 +0000 (15:26 +0200)]
[clangd] Drop version from remote index proto names, fix clangd-index-server

We only need to version these messages if they actually diverge.
Unlike the service, the namespace name isn't part of the wire format.

clangd-index-server was broken by 81e5f298c431555d809f898c196945ca879c1150
as the namespace names weren't updated there, this fixes it (by adding
them for the service, and not requiring them elsewhere).

4 years ago[PowerPC][LLD] Support for PC Relative TLS for Local Dynamic
Stefan Pintilie [Fri, 23 Oct 2020 13:22:00 +0000 (08:22 -0500)]
[PowerPC][LLD] Support for PC Relative TLS for Local Dynamic

Add support to LLD for PC Relative Thread Local Storage for Local Dynamic.
This patch adds support for two relocations: R_PPC64_GOT_TLSLD_PCREL34 and
R_PPC64_DTPREL34.

The Local Dynamic code is:
```
pla r3, x@got@tlsld@pcrel        R_PPC64_GOT_TLSLD_PCREL34
bl __tls_get_addr@notoc(x@tlsld) R_PPC64_TLSLD
                                 R_PPC64_REL24_NOTOC
...
paddi r9, r3, x@dtprel           R_PPC64_DTPREL34
```

After relaxation to Local Exec:
```
paddi r3, r13, 0x1000
nop
...
paddi r9, r3, x@dtprel          R_PPC64_DTPREL34
```

Reviewed By: NeHuang, sfertile

Differential Revision: https://reviews.llvm.org/D87504

4 years ago[MLIR] Extract buffer alias analysis for reuse
Frederik Gossen [Fri, 23 Oct 2020 13:20:31 +0000 (13:20 +0000)]
[MLIR] Extract buffer alias analysis for reuse

Extract buffer alias analysis from buffer placement.

Differential Revision: https://reviews.llvm.org/D89902

4 years ago[clang] Split remote index service definition into a separate file.
Sam McCall [Fri, 23 Oct 2020 12:20:57 +0000 (14:20 +0200)]
[clang] Split remote index service definition into a separate file.

This allows it to have a separate namespace (grpc versioned service) without
putting versioning info on all of the other protos (before we need it).

clang-index-server is still broken (from 81e5f298c431555).

Differential Revision: https://reviews.llvm.org/D90031

4 years ago[ValueTracking] add range limits for cttz
Sanjay Patel [Fri, 23 Oct 2020 12:32:58 +0000 (08:32 -0400)]
[ValueTracking] add range limits for cttz

As discussed in D89952,
instcombine can sometimes find a way to reduce similar patterns,
but it is incomplete.
InstSimplify uses the computeConstantRange() ValueTracking analysis
via simplifyICmpWithConstant(), so we just need to fill in the max
value of cttz to process any "icmp pred cttz(X), C" pattern (the
min value is initialized to zero automatically).

https://alive2.llvm.org/ce/z/Z_SLWZ

Follow-up to D89976.

4 years ago[ValueTracking] add range limits for ctlz
Sanjay Patel [Fri, 23 Oct 2020 12:29:27 +0000 (08:29 -0400)]
[ValueTracking] add range limits for ctlz

As discussed in D89952,
instcombine can sometimes find a way to reduce similar patterns,
but it is incomplete.
InstSimplify uses the computeConstantRange() ValueTracking analysis
via simplifyICmpWithConstant(), so we just need to fill in the max
value of ctlz to process any "icmp pred ctlz(X), C" pattern (the
min value is initialized to zero automatically).

Follow-up to D89976.

4 years ago[InstSimplify] add tests for cttz constant range; NFC
Sanjay Patel [Fri, 23 Oct 2020 12:24:17 +0000 (08:24 -0400)]
[InstSimplify] add tests for cttz constant range; NFC

This is a search-and-replace of f6cb7f3

4 years ago[InstSimplify] add tests for ctlz constant range; NFC
Sanjay Patel [Fri, 23 Oct 2020 12:21:55 +0000 (08:21 -0400)]
[InstSimplify] add tests for ctlz constant range; NFC

This is a search-and-replace of f6cb7f3.

4 years ago[clangd] NFC: Add using directives to avoid spelling out llvm::sys::path
Kirill Bobyrev [Fri, 23 Oct 2020 12:37:46 +0000 (14:37 +0200)]
[clangd] NFC: Add using directives to avoid spelling out llvm::sys::path

`llvm::sys::path` is used a lot in the remote index marshalling code. We can save space by avoiding spelling it out explicitly for most functions and times.

Reviewed By: kadircet

Differential Revision: https://reviews.llvm.org/D90016

4 years ago[CMake] Fix hardcoding of protobuf output basename. NFC
Sam McCall [Fri, 23 Oct 2020 12:06:45 +0000 (14:06 +0200)]
[CMake] Fix hardcoding of protobuf output basename. NFC

Differential Revision: https://reviews.llvm.org/D90030

4 years ago[CMake] generate_grpc_protos -> generate_protos(... GRPC). NFC
Sam McCall [Fri, 23 Oct 2020 11:50:31 +0000 (13:50 +0200)]
[CMake] generate_grpc_protos -> generate_protos(... GRPC). NFC

Differential Revision: https://reviews.llvm.org/D90027

4 years ago[clangd] Migrate to proto2 syntax
Kirill Bobyrev [Fri, 23 Oct 2020 12:26:49 +0000 (14:26 +0200)]
[clangd] Migrate to proto2 syntax

This allows us to check whether enum field is actually sent over the wire or missing.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D89882

4 years ago[clang-tidy] Fix redefinition of module in the same module.modulemap file
Dmitry Polukhin [Wed, 21 Oct 2020 10:25:49 +0000 (11:25 +0100)]
[clang-tidy] Fix redefinition of module in the same module.modulemap file

In memory VFS cannot handle aceesssing the same file with different paths.
This diff just stops using VFS for modulemap files.

Fixes PR47839

Differential Revision: https://reviews.llvm.org/D89886

4 years ago[ValueTracking] add range limits for ctpop
Sanjay Patel [Fri, 23 Oct 2020 12:16:36 +0000 (08:16 -0400)]
[ValueTracking] add range limits for ctpop

As discussed in D89952,
instcombine can sometimes find a way to reduce similar patterns,
but it is incomplete.
InstSimplify uses the computeConstantRange() ValueTracking analysis
via simplifyICmpWithConstant(), so we just need to fill in the max
value of ctpop to process any "icmp pred ctpop(X), C" pattern (the
min value is initialized to zero automatically).

Differential Revision: https://reviews.llvm.org/D89976

4 years ago[mlir] Expose affine expression to C API
zhanghb97 [Wed, 21 Oct 2020 07:32:01 +0000 (15:32 +0800)]
[mlir] Expose affine expression to C API

This patch provides C API for MLIR affine expression.
- Implement C API for methods of AffineExpr class.
- Implement C API for methods of derived classes (AffineBinaryOpExpr, AffineDimExpr, AffineSymbolExpr, and AffineConstantExpr).

Differential Revision: https://reviews.llvm.org/D89856

4 years ago[InstCombine] matchBSwapOrBitReverse - expose bswap/bitreverse matching flags.
Simon Pilgrim [Fri, 23 Oct 2020 11:32:32 +0000 (12:32 +0100)]
[InstCombine] matchBSwapOrBitReverse - expose bswap/bitreverse matching flags.

matchBSwapOrBitReverse was hardcoded to just match bswaps - we're going to need to expose the ability to match bitreverse as well, so make this part of the function call.

4 years ago[InstCombine] Rename InstCombinerImpl::matchBSwap to matchBSwapOrBitReverse. NFCI.
Simon Pilgrim [Fri, 23 Oct 2020 11:19:18 +0000 (12:19 +0100)]
[InstCombine] Rename InstCombinerImpl::matchBSwap to matchBSwapOrBitReverse. NFCI.

This matches bswap and bitreverse intrinsics, so we should make that clear in the function name.

4 years ago[X86] lowerShuffleWithPERMV - use MVT::changeTypeToInteger helper. NFCI.
Simon Pilgrim [Fri, 23 Oct 2020 11:14:19 +0000 (12:14 +0100)]
[X86] lowerShuffleWithPERMV - use MVT::changeTypeToInteger helper. NFCI.

4 years ago[ARM][SchedModels] Convert IsR1P0AndLaterPred to MCSchedPredicate. NFC
Evgeny Leviant [Fri, 23 Oct 2020 11:27:49 +0000 (14:27 +0300)]
[ARM][SchedModels] Convert IsR1P0AndLaterPred to MCSchedPredicate. NFC

Differential revision: https://reviews.llvm.org/D90017

4 years ago[AArch64] Implement getIntrinsicInstrCost, handle min/max intrinsics.
Florian Hahn [Fri, 23 Oct 2020 08:00:20 +0000 (09:00 +0100)]
[AArch64] Implement getIntrinsicInstrCost, handle min/max intrinsics.

This patch adds a specialized implementation of getIntrinsicInstrCost
and add initial cost-modeling for min/max vector intrinsics.

AArch64 NEON support umin/smin/umax/smax for vectors
<8 x i8>, <16 x i8>, <4 x i16>, <8 x i16>, <2 x i32> and <4 x i32>.
Notably, it does not support vectors with i64 elements.

This change by itself should have very little impact on codegen, but in
follow-up patches I plan to teach the vectorizers to consider using
those intrinsics on platforms where it is profitable, e.g. because there
is no general 'select'-like instruction.

The current cost returned should be better for throughput, latency and size.

Reviewed By: dmgreen

Differential Revision: https://reviews.llvm.org/D89953

4 years ago[lldb] Split out NetBSD/x86 watchpoint impl for unification
Michał Górny [Thu, 22 Oct 2020 12:18:36 +0000 (14:18 +0200)]
[lldb] Split out NetBSD/x86 watchpoint impl for unification

Split the current NetBSD watchpoint implementation for x86 into Utility,
and revamp it to improve readability.  This code is meant to be used
as a common class for all x86 watchpoint implementation, particularly
these on FreeBSD and Linux.

The code uses global watchpoint enable bits, as required by the NetBSD
kernel.  If it ever becomes necessary for any platform to use local
enable bits instead, this can be trivially abstracted out.

The code also postpones clearing DR6 until a new different watchpoint
is being set in place of the old one.  This is necessary since LLDB
repeatedly reenables watchpoints on all threads, by clearing
and restoring them.  When DR6 is cleared as a part of that, then pending
events on other threads can no longer be associated with watchpoints
correctly.

Differential Revision: https://reviews.llvm.org/D89874

4 years ago[DebugInstrRef] NFC: Separate collection of machine/variable values
Jeremy Morse [Fri, 23 Oct 2020 10:06:51 +0000 (11:06 +0100)]
[DebugInstrRef] NFC: Separate collection of machine/variable values

This patch adjusts _when_ something happens in LiveDebugValues /
InstrRefBasedLDV, to make it more amenable to dealing with DBG_INSTR_REF
instructions. There's no functional change.

In the current InstrRefBasedLDV implementation, we collect the machine
value-number transfer function for blocks at the same time as the
variable-value transfer function. After solving machine value numbers, the
variable-value transfer function is updated so that DBG_VALUEs of live-in
registers have the correct value. The same would need to be done for
DBG_INSTR_REFs, to connect instruction-references with machine value
numbers.

Rather than writing more code for that, this patch separates the two: we
collect the (machine-value-number) transfer function and solve for
machine value numbers, then step through the MachineInstrs again collecting
the variable value transfer function. This simplifies things for the new
few patches.

Differential Revision: https://reviews.llvm.org/D85760

4 years ago[MLIR] Added PromoteBuffersToStackPass to convert heap- to stack-based allocations.
Julian Gross [Mon, 19 Oct 2020 11:49:06 +0000 (13:49 +0200)]
[MLIR] Added PromoteBuffersToStackPass to convert heap- to stack-based allocations.

Added optimization pass to convert heap-based allocs to stack-based allocas in
buffer placement. Added the corresponding test file.

Differential Revision: https://reviews.llvm.org/D89688

4 years ago[mlir] Fix exiting OpPatternRewriteDriver::simplifyLocally after first iteration...
Christian Sigg [Fri, 23 Oct 2020 06:29:22 +0000 (08:29 +0200)]
[mlir] Fix exiting OpPatternRewriteDriver::simplifyLocally after first iteration that didn't change the op.

Before this change, we would run `maxIterations` if the first iteration changed the op.
After this change, we exit the loop as soon as an iteration hasn't changed the op.
Assuming that we have reached a fixed point when an iteration doesn't change the op, this doesn't affect correctness.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D89981

4 years ago[mem2reg] Remove dbg.values describing contents of dead allocas
OCHyams [Fri, 23 Oct 2020 04:44:13 +0000 (04:44 +0000)]
[mem2reg] Remove dbg.values describing contents of dead allocas

This patch copies @vsk's fix to instcombine from D85555 over to mem2reg. The
motivation and rationale are exactly the same: When mem2reg removes an alloca,
it erases the dbg.{addr,declare} instructions which refer to the alloca. It
would be better to instead remove all debug intrinsics which describe the
contents of the dead alloca, namely all dbg.value(<dead alloca>, ...,
DW_OP_deref)'s.

As far as I can tell, prior to D80264 these `dbg.value+deref`s would have been
silently dropped instead of being made `undef`, so we're just returning to
previous behaviour with these patches.

Testing:
`llvm-lit llvm/test` and `ninja check-clang` gave no unexpected failures. Added
3 tests, each of which covers a dbg.value deletion path in mem2reg:
  mem2reg-promote-alloca-1.ll
  mem2reg-promote-alloca-2.ll
  mem2reg-promote-alloca-3.ll
The first is based on the dexter test inlining.c from D89543. This patch also
improves the debugging experience for loop.c from D89543, which suffers
similarly after arg promotion instead of inlining.

4 years ago[lld][ELF][test] Add additional test coverage for LTO
James Henderson [Tue, 20 Oct 2020 09:07:27 +0000 (10:07 +0100)]
[lld][ELF][test] Add additional test coverage for LTO

These are all inspired by existing test coverage we have in an internal
testsuite.

Reviewed by: grimar, MaskRay

Differential Revision: https://reviews.llvm.org/D89775

4 years ago[AMDGPU] Add simplification/combines for llvm.amdgcn.fmul.legacy
Jay Foad [Tue, 6 Oct 2020 14:49:04 +0000 (15:49 +0100)]
[AMDGPU] Add simplification/combines for llvm.amdgcn.fmul.legacy

Differential Revision: https://reviews.llvm.org/D88955

4 years ago[SVE]Clarify TypeSize comparisons in llvm/lib/Transforms
Caroline Concatto [Fri, 16 Oct 2020 08:21:28 +0000 (09:21 +0100)]
[SVE]Clarify TypeSize comparisons in llvm/lib/Transforms

Use isKnownXY comparators when one of the operands can be with
scalable vectors or getFixedSize() for all the other cases.

This patch also does bug fixes for getPrimitiveSizeInBits by using
getFixedSize() near the places with the TypeSize comparison.

Differential Revision: https://reviews.llvm.org/D89703

4 years ago[llvm-mca] Add test for cortex-a57 NEON instructions
Evgeny Leviant [Fri, 23 Oct 2020 07:55:54 +0000 (10:55 +0300)]
[llvm-mca] Add test for cortex-a57 NEON instructions

4 years ago[ARM][SchedModels] Let ldm* instruction scheduling use MCSchedPredicate
Evgeny Leviant [Fri, 23 Oct 2020 07:33:20 +0000 (10:33 +0300)]
[ARM][SchedModels] Let ldm* instruction scheduling use MCSchedPredicate

Differential revision: https://reviews.llvm.org/D89957

4 years ago[DebugInfo] Clear subreg in setDebugValueUndef()
David Stenberg [Thu, 22 Oct 2020 15:24:30 +0000 (17:24 +0200)]
[DebugInfo] Clear subreg in setDebugValueUndef()

When switching the register debug operands to $noreg in
setupDebugValueUndef() also clear the sub-register indices for virtual
registers. This is done when marking DBG_VALUEs undef in other cases,
e.g. in LiveDebugVariables. I have not found any cases where leaving the
sub-register index causes any issues, and the indices would eventually
get dropped when LiveDebugVariables reinserted the undef DBG_VALUEs
after register scheduling, but if nothing else it looked a bit weird in
printouts to have sub-register indices on $noreg, and I don't think the
sub-register index holds any meaningful information at that point.

I have not been able to find any source-level reproducer for this with
an upstream target, so I have just added an instrumented machine-sink
test.

Reviewed By: djtodoro, jmorse

Differential Revision: https://reviews.llvm.org/D89941

4 years ago[llvm-objcopy][NFC] Extract arg parsing logic into a helper function
Keith Smiley [Fri, 23 Oct 2020 06:13:49 +0000 (23:13 -0700)]
[llvm-objcopy][NFC] Extract arg parsing logic into a helper function

This diff refactors the code which determines the tool type based on
how llvm-objcopy is invoked (objcopy vs strip vs bitcode-strip vs install-name-tool).
NFC.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D89713

4 years agoRevert "[JITLink][ELF] Add support for ELF::R_X86_64_REX_GOTPCRELX relocation."
Lang Hames [Fri, 23 Oct 2020 06:21:29 +0000 (23:21 -0700)]
Revert "[JITLink][ELF] Add support for ELF::R_X86_64_REX_GOTPCRELX relocation."

This reverts commit e2fceec2fd15b7b74617816ddd87f456c42bbc45.

This commit broke one of the bots. Reverting while I investigate.

4 years ago[JITLink][ELF] Add support for ELF::R_X86_64_REX_GOTPCRELX relocation.
Lang Hames [Fri, 23 Oct 2020 05:42:03 +0000 (22:42 -0700)]
[JITLink][ELF] Add support for ELF::R_X86_64_REX_GOTPCRELX relocation.

No support for relaxation yet -- this will always use the GOT entry.

4 years ago[SCEV][NFC] Cache symbolic max exit count
Max Kazantsev [Fri, 23 Oct 2020 05:05:37 +0000 (12:05 +0700)]
[SCEV][NFC] Cache symbolic max exit count

We want to have a caching version of symbolic BE exit count
rather than recompute it every time we need it.

Differential Revision: https://reviews.llvm.org/D89954
Reviewed By: nikic, efriedma

4 years ago[lldb] Fix bug instroduced by a00acbab45b0
Jonas Devlieghere [Fri, 23 Oct 2020 05:15:58 +0000 (22:15 -0700)]
[lldb] Fix bug instroduced by a00acbab45b0

g_expression_prefix, as the name implies, must be perfixed, not
suffixed.

4 years ago[runtimes] Do not set XXX_STANDALONE_BUILD for libc++/abi/unwind
Louis Dionne [Fri, 23 Oct 2020 02:09:43 +0000 (22:09 -0400)]
[runtimes] Do not set XXX_STANDALONE_BUILD for libc++/abi/unwind

The runtimes build was lying to the various runtimes builds by setting
XXX_STANDALONE_BUILD=ON when they are really not being built standalone.
Only COMPILER_RT_STANDALONE_BUILD appears to be necessary, but setting it
for the other runtimes actually breaks everything.

Differential Revision: https://reviews.llvm.org/D90005

4 years ago[lldb] Fix missing initialization in UtilityFunction ctor (NFC)
Jonas Devlieghere [Fri, 23 Oct 2020 04:10:33 +0000 (21:10 -0700)]
[lldb] Fix missing initialization in UtilityFunction ctor (NFC)

The UtilityFunction ctor was dropping the text argument. Probably for
that reason ClangUtilityFunction was setting the parent's member
directly instead of deferring to the parent ctor. Also change the
signatures to take strings which are std::moved in place.

4 years ago[IR] Merge metadata manipulation code into Value
Serge Pavlov [Fri, 13 Sep 2019 17:21:24 +0000 (00:21 +0700)]
[IR] Merge metadata manipulation code into Value

Now there are two main classes in Value hierarchy, which support metadata,
these are Instruction and GlobalObject. They implement different APIs for
metadata manipulation, which however overlap. This change moves metadata
manipulation code into Value, so descendant classes can use this code for
their operations on metadata.

No functional changes intended.

Differential Revision: https://reviews.llvm.org/D67626

4 years agoDebugInfo: Hash DIE referevences (DW_OP_convert) when computing Split DWARF signatures
David Blaikie [Fri, 23 Oct 2020 03:08:54 +0000 (20:08 -0700)]
DebugInfo: Hash DIE referevences (DW_OP_convert) when computing Split DWARF signatures

4 years ago[CGSCC] Detect devirtualization in more cases
Arthur Eubanks [Thu, 15 Oct 2020 00:56:38 +0000 (17:56 -0700)]
[CGSCC] Detect devirtualization in more cases

The devirtualization wrapper misses cases where if it wraps a pass
manager, an individual pass may devirtualize an indirect call created by
a previous pass. For example, inlining may create a new indirect call
which is devirtualized by instcombine. Currently the devirtualization
wrapper will not see that because it only checks cgscc edges at the very
beginning and end of the pass (manager) it wraps.

This fixes some tests testing this exact behavior in the legacy PM.

This piggybacks off of updateCGAndAnalysisManagerForPass()'s detection
of promoted ref to call edges.

This supercedes one of the previous mechanisms to detect
devirtualization by keeping track of potentially promoted call
instructions via WeakTrackingVHs.

There is one more existing way of detecting devirtualization, by
checking if the number of indirect calls has decreased and the number of
direct calls has increased in a function. It handles cases where calls
to functions without definitions are promoted, and some tests rely on
that. LazyCallGraph doesn't track edges to functions without
definitions so this part can't be removed in this change.

check-llvm and check-clang with -abort-on-max-devirt-iterations-reached
on by default doesn't show any failures outside of tests specifically
testing it so it doesn't needlessly rerun passes more than necessary.
(The NPM -O2/3 pipeline run the inliner/function simplification pipeline
under a devirtualization repeater pass up to 4 times by default).

Reviewed By: asbirlea

Differential Revision: https://reviews.llvm.org/D89587

4 years agoSourceManager: Remove a redundant nullptr check in getNonBuiltinFilenameForID, NFC
Duncan P. N. Exon Smith [Fri, 23 Oct 2020 01:41:26 +0000 (21:41 -0400)]
SourceManager: Remove a redundant nullptr check in getNonBuiltinFilenameForID, NFC

4 years agoSourceManager: getFileEntryRefForID => getNonBuiltinFilenameForID, NFC
Duncan P. N. Exon Smith [Thu, 15 Oct 2020 22:46:25 +0000 (18:46 -0400)]
SourceManager: getFileEntryRefForID => getNonBuiltinFilenameForID, NFC

`SourceManager::getFileEntryRefForID`'s remaining callers just want the
filename component, which is coming from the `FileInfo`. Replace the API
with `getNonBuiltinFilenameForID`, which also removes another use of
`FileEntryRef::FileEntryRef` outside of `FileManager`.

Both callers are collecting file dependencies, and one of them relied on
this API to filter out built-ins (as exposed by
clang/test/ClangScanDeps/modules-full.cpp). It seems nice to continue
providing that service.

Differential Revision: https://reviews.llvm.org/D89508

4 years ago[MC] Adjust StringTableBuilder for linked Mach-O binaries
Alexander Shaposhnikov [Fri, 23 Oct 2020 01:03:40 +0000 (18:03 -0700)]
[MC] Adjust StringTableBuilder for linked Mach-O binaries

LD64 emits string tables which start with a space and a zero byte.
This diff adjusts StringTableBuilder for linked Mach-O binaries to match LD64's behavior.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D89561

4 years agoDebugInfo: Tidy up test for more portability to MachO and Windows
David Blaikie [Fri, 23 Oct 2020 02:07:43 +0000 (19:07 -0700)]
DebugInfo: Tidy up test for more portability to MachO and Windows

*fingers crossed*

4 years ago[Inliner] Run always-inliner in inliner-wrapper
Arthur Eubanks [Tue, 1 Sep 2020 22:55:05 +0000 (15:55 -0700)]
[Inliner] Run always-inliner in inliner-wrapper

An alwaysinline function may not get inlined in inliner-wrapper due to
the inlining order.

Previously for the following, the inliner would first inline @a() into @b(),

```
define void @a() {
entry:
  call void @b()
  ret void
}

define void @b() alwaysinline {
entry:
  br label %for.cond

for.cond:
  call void @a()
  br label %for.cond
}
```

making @b() recursive and unable to be inlined into @a(), ending at

```
define void @a() {
entry:
  call void @b()
  ret void
}

define void @b() alwaysinline {
entry:
  br label %for.cond

for.cond:
  call void @b()
  br label %for.cond
}
```

Running always-inliner first makes sure that we respect alwaysinline in more cases.

Fixes https://bugs.llvm.org/show_bug.cgi?id=46945.

Reviewed By: davidxl, rnk

Differential Revision: https://reviews.llvm.org/D86988

4 years agoSourceManager: Change SourceManager::isMainFile to take a FileEntry, NFC
Duncan P. N. Exon Smith [Thu, 15 Oct 2020 22:32:34 +0000 (18:32 -0400)]
SourceManager: Change SourceManager::isMainFile to take a FileEntry, NFC

`SourceManager::isMainFile` does not use the filename, so it doesn't
need the full `FileEntryRef`; in fact, it's misleading to take the name
because that makes it look relevant. Simplify the API, and in the
process remove some calls to `FileEntryRef::FileEntryRef` in the unit
tests (which were blocking making that private to `SourceManager`).

Differential Revision: https://reviews.llvm.org/D89507

4 years agoSourceManager: Factor out helpers for common SLocEntry lookup pattern, NFC
Duncan P. N. Exon Smith [Thu, 15 Oct 2020 22:17:17 +0000 (18:17 -0400)]
SourceManager: Factor out helpers for common SLocEntry lookup pattern, NFC

Add helpers `getSLocEntryOrNull`, which handles the `Invalid` logic
around `getSLocEntry`, and `getSLocEntryForFile`, which also checks for
`SLocEntry::isFile`, and use them to reduce repeated code.

Differential Revision: https://reviews.llvm.org/D89503

4 years ago[OpenMP] Fixed a potential integer overflow
Shilei Tian [Fri, 23 Oct 2020 01:21:41 +0000 (21:21 -0400)]
[OpenMP] Fixed a potential integer overflow

`size_t` has different width on 32- and 64-bit architecture, but the
computation to floor to power of two assumed it is 64-bit, which can cause an
integer overflow. In this patch, architecture detection is added so that the
operation for 64-bit `size_t`. Thank Luke for reporting the issue.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D89878

4 years agoRevert "[MBP] Add whole chain to BlockFilterSet instead of individual BB"
Han Shen [Fri, 23 Oct 2020 00:26:01 +0000 (17:26 -0700)]
Revert "[MBP] Add whole chain to BlockFilterSet instead of individual BB"

This reverts commit adfb5415010fbbc009a4a6298cfda7a6ed4fa6d4.

This is reverted because it caused an chrome error: https://crbug.com/1140168

4 years agoFix constant evaluation of zero-initialization of a union whose first
Richard Smith [Fri, 23 Oct 2020 00:02:28 +0000 (17:02 -0700)]
Fix constant evaluation of zero-initialization of a union whose first
FieldDecl is an unamed bitfield.

Unnamed bitfields aren't non-static data member, so such a bitfield
isn't actually the first non-static data member.

4 years agoBitCodeFormat: update doc on new byref and mustprogress attrs; NFC
Nick Desaulniers [Thu, 22 Oct 2020 23:29:17 +0000 (16:29 -0700)]
BitCodeFormat: update doc on new byref and mustprogress attrs; NFC

Forked from review of:
https://reviews.llvm.org/D87956

4 years ago[libc++abi] Fix the standalone build after the __config_site change
Louis Dionne [Thu, 22 Oct 2020 23:11:33 +0000 (19:11 -0400)]
[libc++abi] Fix the standalone build after the __config_site change

In 5d796645, we stopped looking at the LIBCXXABI_LIBCXX_INCLUDES variable,
which broke users of the Standalone build. This patch reinstates that
variable, however it must point to the *installed* path of the libc++
headers, not the libc++ headers in the source tree (which has always
been the case, but wasn't enforced before).

If LIBCXXABI_LIBCXX_INCLUDES points to the libc++ headers in the source
tree, the `__config_site` header will fail to be found.

4 years ago[NFC][SampleFDO] Move some common stuff from SampleProfileReaderExtBinary/WriterExtBinary
Wei Mi [Thu, 15 Oct 2020 22:17:28 +0000 (15:17 -0700)]
[NFC][SampleFDO] Move some common stuff from SampleProfileReaderExtBinary/WriterExtBinary
to their parent classes.

SampleProfileReaderExtBinary/SampleProfileWriterExtBinary specify the typical
section layout currently used by SampleFDO. Currently a lot of section
reader/writer stay in the two classes. However, as we expect to have more
types of SampleFDO profiles, we hope those new types of profiles can share
the common sections while configuring their own sections easily with minimal
change. That is why I move some common stuff from
SampleProfileReaderExtBinary/SampleProfileWriterExtBinary to
SampleProfileReaderExtBinaryBase/SampleProfileWriterExtBinaryBase so new
profiles class inheriting from the base class can reuse them.

Differential Revision: https://reviews.llvm.org/D89524

4 years agoDebugInfo: Use llc rather than %llc_dwarf when also hardcoding a target triple
David Blaikie [Thu, 22 Oct 2020 22:43:39 +0000 (15:43 -0700)]
DebugInfo: Use llc rather than %llc_dwarf when also hardcoding a target triple

4 years ago[AArch64][GlobalISel] Move imm adjustment for G_ICMP to post-legalizer lowering
Jessica Paquette [Tue, 20 Oct 2020 20:17:39 +0000 (13:17 -0700)]
[AArch64][GlobalISel] Move imm adjustment for G_ICMP to post-legalizer lowering

Move the code which adjusts the immediate/predicate on a G_ICMP to
AArch64PostLegalizerLowering.

This

- Reduces the number of places we need to test for optimized compares in the
selector. We know that the compare should have been simplified by the time it
hits the selector, so we can avoid testing this in selects, brconds, etc.

- Allows us to potentially fold more compares (previously, this optimization
was only done after calling `tryFoldCompare`, this may allow us to hit some more
TST cases)

- Simplifies the selection code in `emitIntegerCompare` significantly; we can
just use an emitSUBS function.

- Allows us to avoid checking that the predicate has been updated after
`emitIntegerCompare`.

Also add a utility header file for things that may be useful in the selector
and various combiners. No need for an implementation file at this point, since
it's just one constexpr function for now. I've run into a couple cases where
having one of these would be handy, so might as well add it here. There are
a couple functions in the selector that can probably be factored out into
here.

Differential Revision: https://reviews.llvm.org/D89823

4 years ago[ELF] --warn-backrefs: save the referenced InputFile *
Fangrui Song [Thu, 22 Oct 2020 22:26:52 +0000 (15:26 -0700)]
[ELF] --warn-backrefs: save the referenced InputFile *

For a diagnostic `A refers to B` where B refers to a bitcode file, if the
symbol gets optimized out, the user may see `A refers to <internal>`; if the
symbol is retained, the user may see `A refers to lto.tmp`.

Save the reference InputFile * in the DenseMap so that the original filename is
available in reportBackrefs().

4 years ago[gn build] (semi-manually) port 147b9497e79
Nico Weber [Thu, 22 Oct 2020 22:16:09 +0000 (18:16 -0400)]
[gn build] (semi-manually) port 147b9497e79

4 years ago[AArch64][GlobalISel] Split post-legalizer combiner to allow for lowering at -O0
Jessica Paquette [Mon, 19 Oct 2020 17:17:15 +0000 (10:17 -0700)]
[AArch64][GlobalISel] Split post-legalizer combiner to allow for lowering at -O0

There are a lot of combines in AArch64PostLegalizerCombiner which exist to
facilitate instruction matching in the selector. (E.g. matching for G_ZIP and
other shuffle vector pseudos)

It still makes sense to select these instructions at -O0.

Matching earlier in a combiner can reduce complexity in the selector
significantly. For example, a good portion of our selection code for compares
would be a lot easier to represent in a combine.

This patch moves matching combines into a "AArch64PostLegalizerLowering"
combiner which runs at all optimization levels.

Also, while we're here, improve the documentation for the
AArch64PostLegalizerCombiner, and fix up the filepath in its file comment.

And also add a 'r' which somehow got dropped from a bunch of function names.

https://reviews.llvm.org/D89820

4 years ago[libTooling] Add function to Transformer to create a no-op edit.
Yitzhak Mandelbaum [Thu, 22 Oct 2020 14:03:59 +0000 (14:03 +0000)]
[libTooling] Add function to Transformer to create a no-op edit.

This functionality is commonly needed in clang tidy checks (based on
transformer) that only print warnings, without suggesting any edits. The no-op
edit allows the user to associate a diagnostic message with a source location.

Differential Revision: https://reviews.llvm.org/D89961

4 years ago[SourceManager] Avoid copying SLocEntry in computeMacroArgsCache
Jan Korous [Thu, 22 Oct 2020 21:18:13 +0000 (14:18 -0700)]
[SourceManager] Avoid copying SLocEntry in computeMacroArgsCache

Follow-up to e7870223d8b5

Differential Revision: https://reviews.llvm.org/D86230

4 years ago[clang][Frontend] Add missing error handling
LemonBoy [Thu, 22 Oct 2020 21:13:07 +0000 (14:13 -0700)]
[clang][Frontend] Add missing error handling

Some early errors during the ASTUnit creation were not transferred to the `FailedParseDiagnostic` so when the code in `LoadFromCommandLine` swaps its content with the content of `StoredDiagnostics` they cannot be retrieved by the user in any way.

Reviewed By: andrewrk, dblaikie

Differential Revision: https://reviews.llvm.org/D78658

4 years ago[libc++] Allow running the tests in the experimental runtimes-only build
Louis Dionne [Thu, 22 Oct 2020 21:03:33 +0000 (17:03 -0400)]
[libc++] Allow running the tests in the experimental runtimes-only build

4 years ago[llvm-objcopy][MachO] Fix the calculation of the output size
Alexander Shaposhnikov [Thu, 22 Oct 2020 20:25:13 +0000 (13:25 -0700)]
[llvm-objcopy][MachO] Fix the calculation of the output size

Virtual sections do not contribute to the final output size.
This diff fixes the corresponding calculations in the method MachOWriter::totalSize.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D89661

4 years ago[GWP-ASan] Move random-related code in the allocator (redo)
Kostya Kortchinsky [Thu, 22 Oct 2020 20:40:12 +0000 (13:40 -0700)]
[GWP-ASan] Move random-related code in the allocator (redo)

This is a redo of D89908, which triggered some `-Werror=conversion`
errors with GCC due to assignments to the 31-bit variable.

This CL adds to the original one a 31-bit mask variable that is used
at every assignment to silence the warning.

Differential Revision: https://reviews.llvm.org/D89984

4 years ago[DomTree] Make assert more precise
Nikita Popov [Thu, 22 Oct 2020 20:40:06 +0000 (22:40 +0200)]
[DomTree] Make assert more precise

Per asbirlea's comment, assert that only instructions, constants
and arguments are passed to this API. Simplify returning true
would not be correct for special Value subclasses like MemoryAccess.

4 years ago[BasicAA] Only add visited phi blocks temporarily
Nikita Popov [Thu, 22 Oct 2020 19:50:18 +0000 (21:50 +0200)]
[BasicAA] Only add visited phi blocks temporarily

Visited phi blocks only need to be added for the duration of the
recursive alias queries, they should not leak into following code.

Once again, while this also improves analysis precision, this is
mainly intended to clarify the applicability scope of VisitedPhiBBs.

4 years ago[AIX] Emit error for -G option on AIX
Xiangling Liao [Wed, 21 Oct 2020 20:50:36 +0000 (16:50 -0400)]
[AIX] Emit error for -G option on AIX

1. Emit error for -G driver option on AIX
2. Adjust cmake file to use -Wl,-G instead of -G

On AIX, legacy XL compiler uses -G to produce a shared object enabled
for use with the run-time linker, which has different meanings from what
it is used for in Clang. And in Clang, other targets do not have -G map
to another functionality in their legacy compiler. So this error is more
important when we are on AIX.

Differential Revision: https://reviews.llvm.org/D89897

4 years ago[BasicAA] Don't track visited blocks for phi-phi alias query
Nikita Popov [Thu, 22 Oct 2020 19:44:09 +0000 (21:44 +0200)]
[BasicAA] Don't track visited blocks for phi-phi alias query

We only need the VisitedPhiBBs to disambiguate comparisons of
values from two different loop iterations. If we're comparing
two phis from the same basic block in lock-step, the compared
values will always be on the same iteration.

While this also increases precision, this is mainly intended
to clarify the scope of VisitedPhiBBs.

4 years agoInitial support for vectorization using Libmvec (GLIBC vector math library)
Venkataramanan Kumar [Thu, 22 Oct 2020 20:00:34 +0000 (16:00 -0400)]
Initial support for vectorization using Libmvec (GLIBC vector math library)

Differential Revision: https://reviews.llvm.org/D88154

4 years agoRevert "[GWP-ASan] Move random-related code in the allocator"
Nikita Popov [Thu, 22 Oct 2020 19:56:37 +0000 (21:56 +0200)]
Revert "[GWP-ASan] Move random-related code in the allocator"

This reverts commit 9903b0586cfb76ef2401c342501e61e1bd3daa0f.

Causes build failures (on GCC 10.2) with the following error:

In file included from /home/nikic/llvm-project/compiler-rt/lib/scudo/standalone/combined.h:29,
                 from /home/nikic/llvm-project/compiler-rt/lib/scudo/standalone/allocator_config.h:12,
                 from /home/nikic/llvm-project/compiler-rt/lib/scudo/standalone/wrappers_cpp.cpp:14:
/home/nikic/llvm-project/compiler-rt/lib/scudo/standalone/../../gwp_asan/guarded_pool_allocator.h: In member function ‘bool gwp_asan::GuardedPoolAllocator::shouldSample()’:
/home/nikic/llvm-project/compiler-rt/lib/scudo/standalone/../../gwp_asan/guarded_pool_allocator.h:82:69: error: conversion from ‘uint32_t’ {aka ‘unsigned int’} to ‘unsigned int:31’ may change value [-Werror=conversion]
   82 |           (getRandomUnsigned32() % (AdjustedSampleRatePlusOne - 1)) + 1;
      |           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~

4 years ago[BasicAA] Add additional phi tests (NFC)
Nikita Popov [Wed, 21 Oct 2020 07:32:17 +0000 (09:32 +0200)]
[BasicAA] Add additional phi tests (NFC)

4 years ago[clangd] Get rid of llvm::Optional in Remote- and LocalIndexRoot; NFC
Kirill Bobyrev [Thu, 22 Oct 2020 19:47:48 +0000 (21:47 +0200)]
[clangd] Get rid of llvm::Optional in Remote- and LocalIndexRoot; NFC

Reviewed By: kadircet

Differential Revision: https://reviews.llvm.org/D89852

4 years ago[SourceManager] Skip module maps when searching files for macro arguments
Jan Korous [Wed, 19 Aug 2020 05:34:37 +0000 (22:34 -0700)]
[SourceManager] Skip module maps when searching files for macro arguments

Differential Revision: https://reviews.llvm.org/D86230

4 years ago[clangd] Give the server information about client's remote index protocol version
Kirill Bobyrev [Thu, 22 Oct 2020 19:15:20 +0000 (21:15 +0200)]
[clangd] Give the server information about client's remote index protocol version

And also introduce Protobuf package versioning, it will help to deal
with breaking changes. Inroducing package version itself is a breaking
change, clients and servers need to be updated.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D89862

4 years ago[test] HotColdSplit: cover use of opaque pointer type
Vedant Kumar [Thu, 22 Oct 2020 19:24:15 +0000 (12:24 -0700)]
[test] HotColdSplit: cover use of opaque pointer type

Add a test to cover the case where an extracted block contains a
lifetime marker for a pointer with an opaque type.