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7 years agoAdd test case for computing known bits of substraction operations. NFC
Amaury Sechet [Tue, 28 Feb 2017 00:15:13 +0000 (00:15 +0000)]
Add test case for computing known bits of substraction operations. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296417 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[CGP] Split some critical edges coming out of indirect branches
Michael Kuperstein [Tue, 28 Feb 2017 00:11:34 +0000 (00:11 +0000)]
[CGP] Split some critical edges coming out of indirect branches

Splitting critical edges when one of the source edges is an indirectbr
is hard in general (because it requires changing the memory the indirectbr
reads). But if a block only has a single indirectbr predecessor (which is
the common case), we can simulate splitting that edge by splitting
the destination block, and retargeting the *direct* branches.

This is motivated by the use of computed gotos in python 2.7: PyEval_EvalFrame()
ends up using an indirect branch with ~100 successors, and passing a constant to
each of those. Since MachineSink can't break indirect critical edges on demand
(and doing this in MIR doesn't look feasible), this causes us to emit about ~100
defs of registers containing constants, which we in the predecessor block, where
only one of those constants is used in each successor. So, at each computed goto,
we needlessly spill about a 100 constants to stack. The end result is that a
clang-compiled python interpreter can be about ~2.5x slower on a simple python
reduction loop than a gcc-compiled interpreter.

Differential Revision: https://reviews.llvm.org/D29916

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296416 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[PDB] Make streams carry their own endianness.
Zachary Turner [Tue, 28 Feb 2017 00:04:07 +0000 (00:04 +0000)]
[PDB] Make streams carry their own endianness.

Before the endianness was specified on each call to read
or write of the StreamReader / StreamWriter, but in practice
it's extremely rare for streams to have data encoded in
multiple different endiannesses, so we should optimize for the
99% use case.

This makes the code cleaner and more general, but otherwise
has NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296415 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[DebugInfo] Fix some Clang-tidy modernize and Include What You Use warnings; other...
Eugene Zelenko [Mon, 27 Feb 2017 23:43:14 +0000 (23:43 +0000)]
[DebugInfo] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296413 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SLP] Load sorting should not try to sort things that aren't loads.
Michael Kuperstein [Mon, 27 Feb 2017 23:18:11 +0000 (23:18 +0000)]
[SLP] Load sorting should not try to sort things that aren't loads.

We may get a VL where the first element is a load, but the others
aren't. Trying to sort such VLs can only lead to sorrow.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296411 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[MC] Implement the COFF directives in MCNullStreamer.
Dan Gohman [Mon, 27 Feb 2017 23:10:18 +0000 (23:10 +0000)]
[MC] Implement the COFF directives in MCNullStreamer.

This fixes -filetype=null errors introduced in r296403.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296410 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAMDGPU: Basic folds for fmed3 intrinsic
Matt Arsenault [Mon, 27 Feb 2017 23:08:49 +0000 (23:08 +0000)]
AMDGPU: Basic folds for fmed3 intrinsic

Constant fold, canonicalize constants to RHS,
reduce to minnum/maxnum when inputs are nan/undef.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296409 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoRemove some code accidentally left in.
Zachary Turner [Mon, 27 Feb 2017 22:57:32 +0000 (22:57 +0000)]
Remove some code accidentally left in.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296407 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AddressSanitizer] Put shadow at 0 for Fuchsia
Petr Hosek [Mon, 27 Feb 2017 22:49:37 +0000 (22:49 +0000)]
[AddressSanitizer] Put shadow at 0 for Fuchsia

The Fuchsia ASan runtime reserves the low part of the address space.

Patch by Roland McGrath

Differential Revision: https://reviews.llvm.org/D30426

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296405 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[CodeGen] Fix some Clang-tidy modernize and Include What You Use warnings; other...
Eugene Zelenko [Mon, 27 Feb 2017 22:45:06 +0000 (22:45 +0000)]
[CodeGen] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296404 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[MC] Factor out non-COFF handling of COFF-specific directives.
Dan Gohman [Mon, 27 Feb 2017 22:44:37 +0000 (22:44 +0000)]
[MC] Factor out non-COFF handling of COFF-specific directives.

Instead of requiring every non-COFF MCObjectStreamer to implement the
COFF hooks just to do an llvm_unreachable to say that they're not
supported, do the llvm_unreachable in the default implementation, as
suggested by rnk in https://reviews.llvm.org/D26722.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296403 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[WebAssembly] Add some comments and tidy up whitespace.
Dan Gohman [Mon, 27 Feb 2017 22:41:39 +0000 (22:41 +0000)]
[WebAssembly] Add some comments and tidy up whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296402 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAMDGPU: Use v_med3_{f16|i16|u16}
Matt Arsenault [Mon, 27 Feb 2017 22:40:39 +0000 (22:40 +0000)]
AMDGPU: Use v_med3_{f16|i16|u16}

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296401 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[WebAssembly] Split CFG-sorting into its own pass. NFC.
Dan Gohman [Mon, 27 Feb 2017 22:38:58 +0000 (22:38 +0000)]
[WebAssembly] Split CFG-sorting into its own pass. NFC.

CFG sorting was already an independent algorithm from block/loop insertion;
this change makes it more convenient to debug.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296399 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoRevert r296366 "[InlineFunction] add nonnull assumptions based on argument attributes"
Hans Wennborg [Mon, 27 Feb 2017 22:33:02 +0000 (22:33 +0000)]
Revert r296366 "[InlineFunction] add nonnull assumptions based on argument attributes"

It causes miscompiles e.g. during self-host of Clang (PR32082).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296398 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAdd missing namespace qualifier.
Zachary Turner [Mon, 27 Feb 2017 22:17:50 +0000 (22:17 +0000)]
Add missing namespace qualifier.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296397 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAMDGPU: Support v2i16/v2f16 packed operations
Matt Arsenault [Mon, 27 Feb 2017 22:15:25 +0000 (22:15 +0000)]
AMDGPU: Support v2i16/v2f16 packed operations

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296396 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoISel: We need to notify FastIS of the IMPLICIT_DEF we created in createSwiftErrorEntr...
Arnold Schwaighofer [Mon, 27 Feb 2017 22:12:06 +0000 (22:12 +0000)]
ISel: We need to notify FastIS of the IMPLICIT_DEF we created in createSwiftErrorEntriesInEntryBlock

Otherwise, it will insert instructions before it.

rdar://30536186

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296395 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[PDB] Partial resubmit of r296215, which improved PDB Stream Library.
Zachary Turner [Mon, 27 Feb 2017 22:11:43 +0000 (22:11 +0000)]
[PDB] Partial resubmit of r296215, which improved PDB Stream Library.

This was reverted because it was breaking some builds, and
because of incorrect error code usage.  Since the CL was
large and contained many different things, I'm resubmitting
it in pieces.

This portion is NFC, and consists of:

1) Renaming classes to follow a consistent naming convention.
2) Fixing the const-ness of the interface methods.
3) Adding detailed doxygen comments.
4) Fixing a few instances of passing `const BinaryStream& X`.  These
   are now passed as `BinaryStreamRef X`.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296394 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoRevert "DAG: Check if extract_vector_elt is legal or custom"
Matt Arsenault [Mon, 27 Feb 2017 21:59:07 +0000 (21:59 +0000)]
Revert "DAG: Check if extract_vector_elt is legal or custom"

This reverts r295782. This could potentially result in some
legalization loops and I avoided the need for this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296393 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoEmpty line. NFCI
Xin Tong [Mon, 27 Feb 2017 21:51:48 +0000 (21:51 +0000)]
Empty line. NFCI

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296392 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[PGO] Fix a bug in reading text format value profile.
Rong Xu [Mon, 27 Feb 2017 21:42:39 +0000 (21:42 +0000)]
[PGO] Fix a bug in reading text format value profile.

Summary: Should use the Valuekind read from the profile.

Reviewers: davidxl

Reviewed By: davidxl

Subscribers: llvm-commits, xur

Differential Revision: https://reviews.llvm.org/D30420

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296391 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[ARM] don't transform an add(ext Cond), C to select unless there's a setcc of the...
Sanjay Patel [Mon, 27 Feb 2017 21:30:54 +0000 (21:30 +0000)]
[ARM] don't transform an add(ext Cond), C to select unless there's a setcc of the condition

The transform in question claims to be doing:

// fold (add (select cc, 0, c), x) -> (select cc, x, (add, x, c))

...starting in PerformADDCombineWithOperands(), but it wasn't actually checking for a setcc node
for the sext/zext patterns.

This is exactly the opposite of a transform I'd like to add to DAGCombiner's foldSelectOfConstants(),
so I was seeing infinite loops with my draft of a patch applied.

The changes in select_const.ll look positive (less instructions). The change in arm-and-tst-peephole.ll
is unrelated. We're changing the input IR in that test to preserve the intent of the test, but that's
not affected by this code change.

Differential Revision:
https://reviews.llvm.org/D30355

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296389 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[Support][Error] Add a 'cantFail' utility function for known-safe calls to
Lang Hames [Mon, 27 Feb 2017 21:09:47 +0000 (21:09 +0000)]
[Support][Error] Add a 'cantFail' utility function for known-safe calls to
fallible functions.

Some fallible functions (those returning Error or Expected<T>) may only fail
for a subset of their inputs. For example, a "safe" square root function will
succeed for all finite positive inputs:

  Expected<double> safeSqrt(double d) {
    if (d < 0 && !isnan(d) && !isinf(d))
      return make_error<...>("Cannot sqrt -ve values, nans or infs");
    return sqrt(d);
  }

At a safe callsite for such a function, checking the error return value is
redundant:

  if (auto ValOrErr = safeSqrt(42.0)) {
    // use *ValOrErr.
  } else
    llvm_unreachable("safeSqrt should always succeed for +ve values");

The cantFail function wraps this check and extracts the contained value,
simplifying control flow:

  double Result = cantFail(safeSqrt(42.0));

This function should be used with care: it is a programmatic error to wrap a
call with cantFail if it can in fact fail. For debug builds this will
result in llvm_unreachable being called. For release builds the behavior is
undefined.

Use of this function is likely to be rare in library code, but more common
for tool and unit-test code where inputs and mock functions may be known to be
safe.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296384 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAMDGPU: Add some of the new gfx9 VOP3 instructions
Matt Arsenault [Mon, 27 Feb 2017 21:04:41 +0000 (21:04 +0000)]
AMDGPU: Add some of the new gfx9 VOP3 instructions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296382 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86][SSE] Attempt to extract vector elements through target shuffles
Simon Pilgrim [Mon, 27 Feb 2017 21:01:57 +0000 (21:01 +0000)]
[X86][SSE] Attempt to extract vector elements through target shuffles

DAGCombiner already supports peeking thorough shuffles to improve vector element extraction, but legalization often leaves us in situations where we need to extract vector elements after shuffles have already been lowered.

This patch adds support for VECTOR_EXTRACT_ELEMENT/PEXTRW/PEXTRB instructions to attempt to handle target shuffles as well. I've covered some basic scenarios including handling shuffle mask scaling and the implicit zero-extension of PEXTRW/PEXTRB, there is more that could be done here (that I've mentioned in TODOs) but I haven't found many cases where its worth it.

Differential Revision: https://reviews.llvm.org/D30176

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296381 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAMDGPU: Support inlineasm for packed instructions
Matt Arsenault [Mon, 27 Feb 2017 20:52:10 +0000 (20:52 +0000)]
AMDGPU: Support inlineasm for packed instructions

Add packed types as legal so they may be used with inlineasm.
Keep all operations expanded for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296379 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SLP] Use different flags in tests for reduction ops and extra args.
Alexey Bataev [Mon, 27 Feb 2017 20:22:44 +0000 (20:22 +0000)]
[SLP] Use different flags in tests for reduction ops and extra args.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296376 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAMDGPU: Don't fold immediate if clamp/omod are set
Matt Arsenault [Mon, 27 Feb 2017 20:21:31 +0000 (20:21 +0000)]
AMDGPU: Don't fold immediate if clamp/omod are set

Doesn't fix any practical problems because clamp/omod
are currently folded after peephole optimizer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296375 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAMDGPU: Fold omod into instructions
Matt Arsenault [Mon, 27 Feb 2017 19:35:42 +0000 (19:35 +0000)]
AMDGPU: Fold omod into instructions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296372 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[TailDuplicator] Maintain DebugLoc for branch instructions
Taewook Oh [Mon, 27 Feb 2017 19:30:01 +0000 (19:30 +0000)]
[TailDuplicator] Maintain DebugLoc for branch instructions

Summary: Existing implementation of duplicateSimpleBB function drops DebugLoc metadata of branch instructions during the transformation. This patch addresses this issue by making newly created branch instructions to keep the metadata of replaced branch instructions.

Reviewers: qcolombet, craig.topper, aprantl, MatzeB, sanjoy, dblaikie

Reviewed By: dblaikie

Subscribers: dblaikie, llvm-commits

Differential Revision: https://reviews.llvm.org/D30026

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296371 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAMDGPU: Add f16 to shader calling conventions
Matt Arsenault [Mon, 27 Feb 2017 19:24:47 +0000 (19:24 +0000)]
AMDGPU: Add f16 to shader calling conventions

Mostly useful for writing tests for f16 features.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296370 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SLP] Modify test to check IR flags propagation for extra args.
Alexey Bataev [Mon, 27 Feb 2017 19:16:09 +0000 (19:16 +0000)]
[SLP] Modify test to check IR flags propagation for extra args.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296369 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAMDGPU: Add VOP3P instruction format
Matt Arsenault [Mon, 27 Feb 2017 18:49:11 +0000 (18:49 +0000)]
AMDGPU: Add VOP3P instruction format

Add a few non-VOP3P but instructions related to packed.

Includes hack with dummy operands for the benefit of the assembler

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296368 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoRefactor xaluo.ll and xmulo.ll tests. NFC
Amaury Sechet [Mon, 27 Feb 2017 18:32:54 +0000 (18:32 +0000)]
Refactor xaluo.ll and xmulo.ll tests. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296367 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[InlineFunction] add nonnull assumptions based on argument attributes
Sanjay Patel [Mon, 27 Feb 2017 18:13:48 +0000 (18:13 +0000)]
[InlineFunction] add nonnull assumptions based on argument attributes

This was suggested in D27855: have the inliner add assumptions, so we don't
lose nonnull info provided by argument attributes.

This still doesn't solve PR28430 (dyn_cast), but this gets us closer.

https://reviews.llvm.org/D29999

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296366 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[Hexagon] Defs and clobbers can overlap
Krzysztof Parzyszek [Mon, 27 Feb 2017 18:03:35 +0000 (18:03 +0000)]
[Hexagon] Defs and clobbers can overlap

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296365 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoFix a bug when unswitching on partial LIV for SwitchInst
Xin Tong [Mon, 27 Feb 2017 18:00:13 +0000 (18:00 +0000)]
Fix a bug when unswitching on partial LIV for SwitchInst

Summary: Fix a bug when unswitching on partial LIV for SwitchInst.

Reviewers: hfinkel, efriedma, sanjoy

Reviewed By: sanjoy

Subscribers: david2050, mzolotukhin, llvm-commits

Differential Revision: https://reviews.llvm.org/D29107

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296363 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoFix comments. NFC.
Rong Xu [Mon, 27 Feb 2017 17:59:01 +0000 (17:59 +0000)]
Fix comments. NFC.

Change "Thin-LTO" to "ThinLTO" in the comments for consistency.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296362 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoFix LLVM module build
Steven Wu [Mon, 27 Feb 2017 16:56:37 +0000 (16:56 +0000)]
Fix LLVM module build

Add WasmRelocs/WebAssembly.def to textual include header.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296356 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Use APInt instead of SmallBitVector tracking undef elements from getTargetConst...
Craig Topper [Mon, 27 Feb 2017 16:15:32 +0000 (16:15 +0000)]
[X86] Use APInt instead of SmallBitVector tracking undef elements from getTargetConstantBitsFromNode and getConstVector.

Summary:
SmallBitVector uses a malloc for more than 58 bits on a 64-bit target and more than 27 bits on a 32-bit target. Some of the vector types we deal with here use more than those number of elements and therefore cause a malloc.

APInt on the other hand supports up to 64 bits without a malloc. That's the maximum number of bits we need here so we can avoid a malloc for all cases by using APInt.

Reviewers: RKSimon

Reviewed By: RKSimon

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D30392

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296355 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Use APInt instead of SmallBitVector for tracking Zeroable elements in shuffle...
Craig Topper [Mon, 27 Feb 2017 16:15:30 +0000 (16:15 +0000)]
[X86] Use APInt instead of SmallBitVector for tracking Zeroable elements in shuffle lowering

Summary:
SmallBitVector uses a malloc for more than 58 bits on a 64-bit target and more than 27 bits on a 32-bit target. Some of the vector types we deal with here use more than those number of elements and therefore cause a malloc.

APInt on the other hand supports up to 64 bits without a malloc. That's the maximum number of bits we need here so we can avoid a malloc for all cases by using APInt.

Reviewers: RKSimon

Reviewed By: RKSimon

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D30390

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296354 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Fix SmallVector sizes in constant pool shuffle decoding to avoid heap allocation
Craig Topper [Mon, 27 Feb 2017 16:15:27 +0000 (16:15 +0000)]
[X86] Fix SmallVector sizes in constant pool shuffle decoding to avoid heap allocation

Some of the vectors are under sized to avoid heap allocation. In one case the vector was oversized.

Differential Revision: https://reviews.llvm.org/D30387

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296353 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Use APInt instead of SmallBitVector for tracking undef elements in constant...
Craig Topper [Mon, 27 Feb 2017 16:15:25 +0000 (16:15 +0000)]
[X86] Use APInt instead of SmallBitVector for tracking undef elements in constant pool shuffle decoding

Summary:
SmallBitVector uses a malloc for more than 58 bits on a 64-bit target and more than 27 bits on a 32-bit target. Some of the vector types we deal with here use more than those number of elements and therefore cause a malloc.

APInt on the other hand supports up to 64 bits without a malloc. That's the maximum number of bits we need here so we can avoid a malloc for all cases by using APInt. This will incur a minor increase in stack usage due to APInt storing the bit count separately from the data bits unlike SmallBitVector, but that should be ok.

Reviewers: RKSimon

Reviewed By: RKSimon

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D30386

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296352 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoRemove an empty line in icmp-illegal.ll . NFC
Amaury Sechet [Mon, 27 Feb 2017 16:09:44 +0000 (16:09 +0000)]
Remove an empty line in icmp-illegal.ll . NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296350 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SLP] A test for a fix of PR32038.
Alexey Bataev [Mon, 27 Feb 2017 16:07:10 +0000 (16:07 +0000)]
[SLP] A test for a fix of PR32038.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296349 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoLoop predication expand both sides of the widened condition
Artur Pilipenko [Mon, 27 Feb 2017 15:44:49 +0000 (15:44 +0000)]
Loop predication expand both sides of the widened condition

This is a fix for a loop predication bug which resulted in malformed IR generation.

Loop invariant side of the widened condition is not guaranteed to be available in the preheader as is, so we need to expand it as well. See added unsigned_loop_0_to_n_hoist_length test for example.

Reviewed By: sanjoy, mkazantsev

Differential Revision: https://reviews.llvm.org/D30099

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296345 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAArch64InstPrinter: rewrite of printSysAlias
Sjoerd Meijer [Mon, 27 Feb 2017 14:45:34 +0000 (14:45 +0000)]
AArch64InstPrinter: rewrite of printSysAlias

This is a cleanup/rewrite of the printSysAlias function. This was not using the
tablegen instruction descriptions, but was "manually" decoding the
instructions. This has been replaced with calls to lookup_XYZ_ByEncoding
tablegen calls.

This revealed several problems. First, instruction IVAU had the wrong encoding.
This was cancelled out by the parser that incorrectly matched the wrong
encoding. Second, instruction CVAP was missing from the SystemOperands tablegen
descriptions, so this has been added. And third, the required target features
were not captured in the tablegen descriptions, so support for this has also
been added.

Differential Revision: https://reviews.llvm.org/D30329

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296343 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[ARM] LSL #0 is an alias of MOV
John Brawn [Mon, 27 Feb 2017 14:40:51 +0000 (14:40 +0000)]
[ARM] LSL #0 is an alias of MOV

Currently we handle this correctly in arm, but in thumb we don't which leads to
an unpredictable instruction being emitted for LSL #0 in an IT block and SP not
being permitted in some cases when it should be.

For the thumb2 LSL we can handle this by making LSL #0 an alias of MOV in the
.td file, but for thumb1 we need to handle it in checkTargetMatchPredicate to
get the IT handling right. We also need to adjust the handling of
MOV rd, rn, LSL #0 to avoid generating the 16-bit encoding in an IT block. We
should also adjust it to allow SP in the same way that it is allowed in
MOV rd, rn, but I haven't done that here because it looks like it would take
quite a lot of work to get right.

Additionally correct the selection of the 16-bit shift instructions in
processInstruction, where it was checking if the two registers were equal when
it should have been checking if they were low. It appears that previously this
code was never executed and the 16-bit encoding was selected by default, but
the other changes I've done here have somehow made it start being used.

Differential Revision: https://reviews.llvm.org/D30294

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296342 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[DAGCombine] Fix for a load combine bug with non-zero offset patterns on BE targets
Artur Pilipenko [Mon, 27 Feb 2017 13:04:23 +0000 (13:04 +0000)]
[DAGCombine] Fix for a load combine bug with non-zero offset patterns on BE targets

This pattern is essentially a i16 load from p+1 address:

  %p1.i16 = bitcast i8* %p to i16*
  %p2.i8 = getelementptr i8, i8* %p, i64 2
  %v1 = load i16, i16* %p1.i16
  %v2.i8 = load i8, i8* %p2.i8
  %v2 = zext i8 %v2.i8 to i16
  %v1.shl = shl i16 %v1, 8
  %res = or i16 %v1.shl, %v2

Current implementation would identify %v1 load as the first byte load and would mistakenly emit a i16 load from %p1.i16 address. This patch adds a check that the first byte is loaded from a non-zero offset of the first load address. This way this address can be used as the base address for the combined value. Otherwise just give up combining.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296336 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[DAGCombine] NFC. MatchLoadCombine extract MemoryByteOffset lambda helper
Artur Pilipenko [Mon, 27 Feb 2017 11:42:54 +0000 (11:42 +0000)]
[DAGCombine] NFC. MatchLoadCombine extract MemoryByteOffset lambda helper

This refactoring will simplify the upcoming change to fix the bug in folding patterns with non-zero offsets on BE targets.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296332 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[DAGCombine] NFC. MatchLoadCombine remember the first byte provider, not the load...
Artur Pilipenko [Mon, 27 Feb 2017 11:40:14 +0000 (11:40 +0000)]
[DAGCombine] NFC. MatchLoadCombine remember the first byte provider, not the load node

This refactoring will simplify the upcoming change to fix a bug in folding patterns with non-zero offsets on BE targets.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296331 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAArch64AsmParser: don't try to parse “[1]” for non-vector register operands
Sjoerd Meijer [Mon, 27 Feb 2017 10:51:11 +0000 (10:51 +0000)]
AArch64AsmParser: don't try to parse “[1]” for non-vector register operands

There are no instructions that have "[1]" as part of the assembly string;
FMOVXDhighr is out of date. This removes dead code.

Differential Revision: https://reviews.llvm.org/D30165

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296327 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AMDGPU] Runtime metadata fixes:
Konstantin Zhuravlyov [Mon, 27 Feb 2017 07:55:17 +0000 (07:55 +0000)]
[AMDGPU] Runtime metadata fixes:
  - Verify that runtime metadata is actually valid runtime metadata when assembling, otherwise we could accept the following when assembling, but ocl runtime will reject it:
    .amdgpu_runtime_metadata
    { amd.MDVersion: [ 2, 1 ], amd.RandomUnknownKey, amd.IsaInfo: ...
  - Make IsaInfo optional, and always emit it.

Differential Revision: https://reviews.llvm.org/D30349

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296324 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agollvm-mc-fuzzer: add support for assembly
Brian Cain [Mon, 27 Feb 2017 06:22:17 +0000 (06:22 +0000)]
llvm-mc-fuzzer: add support for assembly

This creates an llvm-mc-disassemble-fuzzer from the existing llvm-mc-fuzzer
and finishing the assemble support in llvm-mc-assemble-fuzzer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296323 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[APInt] Use UINT64_MAX instead of ~integerPart(0). NFC
Craig Topper [Mon, 27 Feb 2017 06:05:33 +0000 (06:05 +0000)]
[APInt] Use UINT64_MAX instead of ~integerPart(0). NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296322 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Check for less than 0 rather than explicit compare with -1. NFC
Craig Topper [Mon, 27 Feb 2017 06:05:30 +0000 (06:05 +0000)]
[X86] Check for less than 0 rather than explicit compare with -1. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296321 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoDo full codegen for various tests. NFC
Amaury Sechet [Mon, 27 Feb 2017 01:15:57 +0000 (01:15 +0000)]
Do full codegen for various tests. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296305 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[APInt] Use UINT64_MAX instead of ~uint64_t(0ULL). NFC
Craig Topper [Sun, 26 Feb 2017 21:15:18 +0000 (21:15 +0000)]
[APInt] Use UINT64_MAX instead of ~uint64_t(0ULL). NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296301 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[APInt] Use UINT64_MAX instead of ~0ULL. NFC
Craig Topper [Sun, 26 Feb 2017 19:28:48 +0000 (19:28 +0000)]
[APInt] Use UINT64_MAX instead of ~0ULL. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296300 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[APInt] Remove unnecessary early out from getLowBitsSet. The same case is handled...
Craig Topper [Sun, 26 Feb 2017 19:28:45 +0000 (19:28 +0000)]
[APInt] Remove unnecessary early out from getLowBitsSet. The same case is handled equally well by the next check.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296299 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoUpdate comments. NFCI
Xin Tong [Sun, 26 Feb 2017 19:08:44 +0000 (19:08 +0000)]
Update comments. NFCI

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296298 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoRevert "[CGP] Split some critical edges coming out of indirect branches"
Daniel Jasper [Sun, 26 Feb 2017 11:09:12 +0000 (11:09 +0000)]
Revert "[CGP] Split some critical edges coming out of indirect branches"

This reverts commit r296149 as it leads to crashes when compiling for
PPC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296295 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[LoopDeletion] Modernize and simplify a bit. NFCI.
Davide Italiano [Sun, 26 Feb 2017 07:08:20 +0000 (07:08 +0000)]
[LoopDeletion] Modernize and simplify a bit. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296294 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Fix execution domain for cmpss/sd instructions.
Craig Topper [Sun, 26 Feb 2017 06:45:59 +0000 (06:45 +0000)]
[X86] Fix execution domain for cmpss/sd instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296293 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Fix execution domain for scalar commutable min/max instructions.
Craig Topper [Sun, 26 Feb 2017 06:45:56 +0000 (06:45 +0000)]
[AVX-512] Fix execution domain for scalar commutable min/max instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296292 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Fix execution domain for vmovhpd/lpd/hps/lps.
Craig Topper [Sun, 26 Feb 2017 06:45:54 +0000 (06:45 +0000)]
[AVX-512] Fix execution domain for vmovhpd/lpd/hps/lps.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296291 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Fix the execution domain for AVX-512 integer broadcasts.
Craig Topper [Sun, 26 Feb 2017 06:45:51 +0000 (06:45 +0000)]
[AVX-512] Fix the execution domain for AVX-512 integer broadcasts.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296290 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Disable the redundant patterns in the VPBROADCASTBr_Alt and VPBROADCASTWr_A...
Craig Topper [Sun, 26 Feb 2017 06:45:48 +0000 (06:45 +0000)]
[AVX-512] Disable the redundant patterns in the VPBROADCASTBr_Alt and VPBROADCASTWr_Alt instructions. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296289 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Fix execution domain for VPMADD52 instructions.
Craig Topper [Sun, 26 Feb 2017 06:45:45 +0000 (06:45 +0000)]
[AVX-512] Fix execution domain for VPMADD52 instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296288 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Use update_llc_test_checks.py to regenerate a test.
Craig Topper [Sun, 26 Feb 2017 06:45:43 +0000 (06:45 +0000)]
[AVX-512] Use update_llc_test_checks.py to regenerate a test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296287 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Fix the execution domain for VSCALEF instructions.
Craig Topper [Sun, 26 Feb 2017 06:45:40 +0000 (06:45 +0000)]
[AVX-512] Fix the execution domain for VSCALEF instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296286 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Fix execution domain of scalar VRANGE/REDUCE/GETMANT with sae.
Craig Topper [Sun, 26 Feb 2017 06:45:37 +0000 (06:45 +0000)]
[AVX-512] Fix execution domain of scalar VRANGE/REDUCE/GETMANT with sae.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296285 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Fix the execution domain for scalar SQRT intrinsic instruction.
Craig Topper [Sun, 26 Feb 2017 06:45:35 +0000 (06:45 +0000)]
[X86] Fix the execution domain for scalar SQRT intrinsic instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296284 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Add an additional CHECK prefix to a test. Some of the cases used it, but it...
Craig Topper [Sun, 26 Feb 2017 06:45:32 +0000 (06:45 +0000)]
[X86] Add an additional CHECK prefix to a test. Some of the cases used it, but it wasn't on the FileCheck command lines.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296283 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SCCP] Remove manual folding of terminator instructions.
Xin Tong [Sun, 26 Feb 2017 02:11:24 +0000 (02:11 +0000)]
[SCCP] Remove manual folding of terminator instructions.

Summary:
BranchInst, SwitchInst (with non-default case) with Undef as input is not
possible at this point. As we always default-fold terminator to one target in
ResolvedUndefsIn and set the input accordingly.

So we should only have constantint/blockaddress here.

If ConstantFoldTerminator fails, that could mean 2 things.

1. ConstantFoldTerminator is doing something unexpected, i.e. not folding on constantint
or blockaddress and not making blocks that should be dead dead.
2. This is not a terminator on constantint or blockaddress. Its on a constant or
overdefined, then this block should not be dead.

In both cases, we should assert.

Reviewers: davide, efriedma, sanjoy

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D30381

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296281 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Clean up test/CodeGen/X86/2006-03-02-InstrSchedBug.ll
David L. Jones [Sun, 26 Feb 2017 01:32:35 +0000 (01:32 +0000)]
[X86] Clean up test/CodeGen/X86/2006-03-02-InstrSchedBug.ll

Summary:
Migrated from grep to FileCheck.
Re-indented code, removed boilerplate comments.
Added 'entry' label at beginning of basic block.

Patch by Jorge Gorbe!

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D30320

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296280 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoRevert "In visitSTORE, always use FindBetterChain, rather than only when UseAA is...
Nirav Dave [Sun, 26 Feb 2017 01:27:32 +0000 (01:27 +0000)]
Revert "In visitSTORE, always use FindBetterChain, rather than only when UseAA is enabled."

This reverts commit r296252 until 256-bit operations are more efficiently generated in X86.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296279 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agovec perm can go down either pipeline on P8.
Eric Christopher [Sun, 26 Feb 2017 00:11:58 +0000 (00:11 +0000)]
vec perm can go down either pipeline on P8.
No observable changes, spotted while looking at the scheduling description.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296277 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoFix signed-unsigned comparison warning
Sanjoy Das [Sat, 25 Feb 2017 22:25:48 +0000 (22:25 +0000)]
Fix signed-unsigned comparison warning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296274 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[ValueTracking] Don't do an unchecked shift in ComputeNumSignBits
Sanjoy Das [Sat, 25 Feb 2017 20:30:45 +0000 (20:30 +0000)]
[ValueTracking] Don't do an unchecked shift in ComputeNumSignBits

Summary:
Previously we used to return a bogus result, 0, for IR like `ashr %val,
-1`.

I've also added an assert checking that `ComputeNumSignBits` at least
returns 1.  That assert found an already checked in test case where we
were returning a bad result for `ashr %val, -1`.

Fixes PR32045.

Reviewers: spatel, majnemer

Reviewed By: spatel, majnemer

Subscribers: efriedma, mcrosier, llvm-commits

Differential Revision: https://reviews.llvm.org/D30311

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296273 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[APInt] Add APInt::extractBits() method to extract APInt subrange (reapplied)
Simon Pilgrim [Sat, 25 Feb 2017 20:01:58 +0000 (20:01 +0000)]
[APInt] Add APInt::extractBits() method to extract APInt subrange (reapplied)

The current pattern for extract bits in range is typically:

Mask.lshr(BitOffset).trunc(SubSizeInBits);

Which can be particularly slow for large APInts (MaskSizeInBits > 64) as they require the allocation of memory for the temporary variable.

This is another of the compile time issues identified in PR32037 (see also D30265).

This patch adds the APInt::extractBits() helper method which avoids the temporary memory allocation.

Differential Revision: https://reviews.llvm.org/D30336

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296272 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Fix the execution domain for scalar FMA instructions.
Craig Topper [Sat, 25 Feb 2017 19:36:28 +0000 (19:36 +0000)]
[AVX-512] Fix the execution domain for scalar FMA instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296271 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Fix the execution domain on some instructions.
Craig Topper [Sat, 25 Feb 2017 19:18:11 +0000 (19:18 +0000)]
[AVX-512] Fix the execution domain on some instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296270 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Add an additional test case to show the execution domain for vrqsrtsd is...
Craig Topper [Sat, 25 Feb 2017 19:18:08 +0000 (19:18 +0000)]
[AVX-512] Add an additional test case to show the execution domain for vrqsrtsd is wrong.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296269 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Use update_llc_test_checks.py to regenerate the avx512er intrinsic test.
Craig Topper [Sat, 25 Feb 2017 19:18:04 +0000 (19:18 +0000)]
[AVX-512] Use update_llc_test_checks.py to regenerate the avx512er intrinsic test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296268 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoreenable accidentally disabled test NFC.
Nirav Dave [Sat, 25 Feb 2017 19:11:53 +0000 (19:11 +0000)]
reenable accidentally disabled test NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296266 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Remove unnecessary masked versions of VCVTSS2SD and VCVTSD2SS using the...
Craig Topper [Sat, 25 Feb 2017 18:43:42 +0000 (18:43 +0000)]
[AVX-512] Remove unnecessary masked versions of VCVTSS2SD and VCVTSD2SS using the scalar register class. We only have patterns for the masked intrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296264 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[ExecutionDepsFix] Don't make copies of LiveReg objects when collecting operands...
Craig Topper [Sat, 25 Feb 2017 18:12:25 +0000 (18:12 +0000)]
[ExecutionDepsFix] Don't make copies of LiveReg objects when collecting operands for soft instructions

Summary:
While collecting operands we make copies of the LiveReg objects which are stored in the LiveRegs array. If the instruction uses the same register multiple times we end up with multiple copies. Later we iterate through the collected list of LiveReg objects and merge DomainValues. In the process of doing this the merge function can change the contents of the original LiveReg object in the LiveRegs array, but not the copies that have been made. So when we get to the second usage of the register we end up seeing a stale copy of the LiveReg object.

To fix this I've stopped copying and now just store a pointer to the original LiveReg object. Another option might be to avoid adding the same register to the Regs array twice, but this approach seemed simpler.

The included test case exposes this bug due to an AVX-512 masked OR instruction using the same register for the passthru operand and one of the inputs to the OR operation.

Fixes PR30284.

Reviewers: RKSimon, stoklund, MatzeB, spatel, myatsina

Reviewed By: RKSimon

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D30242

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296260 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoNo need to copy the variable [NFC]
Artyom Skrobov [Sat, 25 Feb 2017 17:18:09 +0000 (17:18 +0000)]
No need to copy the variable [NFC]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296259 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoRevert r296215, "[PDB] General improvements to Stream library." and followings.
NAKAMURA Takumi [Sat, 25 Feb 2017 17:04:23 +0000 (17:04 +0000)]
Revert r296215, "[PDB] General improvements to Stream library." and followings.

r296215, "[PDB] General improvements to Stream library."
r296217, "Disable BinaryStreamTest.StreamReaderObject temporarily."
r296220, "Re-enable BinaryStreamTest.StreamReaderObject."
r296244, "[PDB] Disable some tests that are breaking bots."
r296249, "Add static_cast to silence -Wc++11-narrowing."

std::errc::no_buffer_space should be used for OS-oriented errors for socket transmission.
(Seek discussions around llvm/xray.)

I could substitute s/no_buffer_space/others/g, but I revert whole them ATM.

Could we define and use LLVM errors there?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296258 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoUpdate various test's codegen. NFC
Amaury Sechet [Sat, 25 Feb 2017 16:46:47 +0000 (16:46 +0000)]
Update various test's codegen. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296257 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAdd test for known bits in uaddo and saddo.
Amaury Sechet [Sat, 25 Feb 2017 15:58:34 +0000 (15:58 +0000)]
Add test for known bits in uaddo and saddo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296255 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoThe automatic CHECK: to CHECK-LABEL: conversion, back in 2013,
Artyom Skrobov [Sat, 25 Feb 2017 15:17:16 +0000 (15:17 +0000)]
The automatic CHECK: to CHECK-LABEL: conversion, back in 2013,
had missed most labels in this test because they didn't end
with a colon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296254 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[DebugInfo] Skip implicit_const attributes when dumping .debug_info. NFC.
Victor Leschuk [Sat, 25 Feb 2017 13:15:57 +0000 (13:15 +0000)]
[DebugInfo] Skip implicit_const attributes when dumping .debug_info. NFC.

When dumping .debug_info section we loop through all attributes mentioned in
.debug_abbrev section and dump values using DWARFFormValue::extractValue().
We need to skip implicit_const attributes here as their values are not
really located in .debug_info but directly in .debug_abbrev. This patch fixes
triggered assert() in DWARFFormValue::extractValue() caused by trying to
access implicit_const values from .debug_info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296253 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoIn visitSTORE, always use FindBetterChain, rather than only when UseAA is enabled.
Nirav Dave [Sat, 25 Feb 2017 11:43:58 +0000 (11:43 +0000)]
In visitSTORE, always use FindBetterChain, rather than only when UseAA is enabled.

    Recommiting after fixup of 32-bit aliasing sign offset bug in DAGCombiner.

    * Simplify Consecutive Merge Store Candidate Search

    Now that address aliasing is much less conservative, push through
    simplified store merging search and chain alias analysis which only
    checks for parallel stores through the chain subgraph. This is cleaner
    as the separation of non-interfering loads/stores from the
    store-merging logic.

    When merging stores search up the chain through a single load, and
    finds all possible stores by looking down from through a load and a
    TokenFactor to all stores visited.

    This improves the quality of the output SelectionDAG and the output
    Codegen (save perhaps for some ARM cases where we correctly constructs
    wider loads, but then promotes them to float operations which appear
    but requires more expensive constant generation).

    Some minor peephole optimizations to deal with improved SubDAG shapes (listed below)

    Additional Minor Changes:

      1. Finishes removing unused AliasLoad code

      2. Unifies the chain aggregation in the merged stores across code
         paths

      3. Re-add the Store node to the worklist after calling
         SimplifyDemandedBits.

      4. Increase GatherAllAliasesMaxDepth from 6 to 18. That number is
         arbitrary, but seems sufficient to not cause regressions in
         tests.

      5. Remove Chain dependencies of Memory operations on CopyfromReg
         nodes as these are captured by data dependence

      6. Forward loads-store values through tokenfactors containing
          {CopyToReg,CopyFromReg} Values.

      7. Peephole to convert buildvector of extract_vector_elt to
         extract_subvector if possible (see
         CodeGen/AArch64/store-merge.ll)

      8. Store merging for the ARM target is restricted to 32-bit as
         some in some contexts invalid 64-bit operations are being
         generated. This can be removed once appropriate checks are
         added.

    This finishes the change Matt Arsenault started in r246307 and
    jyknight's original patch.

    Many tests required some changes as memory operations are now
    reorderable, improving load-store forwarding. One test in
    particular is worth noting:

      CodeGen/PowerPC/ppc64-align-long-double.ll - Improved load-store
      forwarding converts a load-store pair into a parallel store and
      a memory-realized bitcast of the same value. However, because we
      lose the sharing of the explicit and implicit store values we
      must create another local store. A similar transformation
      happens before SelectionDAG as well.

    Reviewers: arsenm, hfinkel, tstellarAMD, jyknight, nhaehnle

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296252 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[Doc] Modernize programmers manual
Piotr Padlewski [Sat, 25 Feb 2017 10:33:37 +0000 (10:33 +0000)]
[Doc] Modernize programmers manual

Summary:
Fixed bunch of for loops to range based for loop
and bunch of rendundat types with auto.

Reviewers: echristo, silvas, chandlerc

Subscribers: mehdi_amini, llvm-commits

Differential Revision: https://reviews.llvm.org/D30338

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296251 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoEmpty line. NFCI
Xin Tong [Sat, 25 Feb 2017 08:10:28 +0000 (08:10 +0000)]
Empty line. NFCI

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296250 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAdd static_cast to silence -Wc++11-narrowing.
Daniel Jasper [Sat, 25 Feb 2017 07:53:36 +0000 (07:53 +0000)]
Add static_cast to silence -Wc++11-narrowing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296249 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[PDB] Disable some tests that are breaking bots.
Zachary Turner [Sat, 25 Feb 2017 05:57:57 +0000 (05:57 +0000)]
[PDB] Disable some tests that are breaking bots.

This has to do with big endian, but I can't fix it until
Monday.  The code itself is fine, just the tests are wrong.
Disabling 3 tests for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296244 91177308-0d34-0410-b5e6-96231b3b80d8