llvm-svn: 277503

llvm-svn: 277502

Attempt 2: Retryign after Tsan.mman test fix.

Attempt 1: Recommitting after fixing test.

When parsing assembly where the line comment syntax is not hash, the
lexer cannot distinguish between hash's that start a hash line comment
and one that is part of an assembly statement and must be distinguished
during parsing. Previously, this was incompletely handled by not checking
for EndOfStatement at the end of statements and interpreting hash
prefixed statements as comments.

Change EndOfStatement Parsing to check for Hash comments and reintroduce
Hash statement parsing to catch previously handled cases.

Reviewers: rnk, majnemer

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D23017

llvm-svn: 277501

Summary:
There are cases where uniform branch conditions are computed in VGPRs, and
we didn't correctly mark those as WQM.

The stray change in basic-branch.ll is because invoking the LiveIntervals
analysis leads to the detection of a dead register that would otherwise not
be seen at -O0.

This is a candidate for the 3.9 branch, as it fixes a possible hang.

Reviewers: arsenm, tstellarAMD, mareko

Subscribers: arsenm, llvm-commits, kzhuravl

Differential Revision: https://reviews.llvm.org/D22673

llvm-svn: 277500

I forgot the REQUIRES once (see r277486).
Let's prevent it from happening again.

llvm-svn: 277499

llvm-svn: 277498

Identify patterns where the address is aligned to an 8-byte boundary,
but both the base address and the constant offset are both proper
multiples of 4. In such cases, extract Base+4 into a separate instruc-
tion, and use S2_storerd_io, instead of using S4_storerd_rr.

llvm-svn: 277497

llvm-svn: 277496

llvm-svn: 277495

- Implement getOptimalMemOpType.
- Check BaseOffset in isLegalAddressingMode.

llvm-svn: 277494

This reverts commit r277487.

Removing the probe predicate was a red herring. It results in more symbols being placed in the final order file, but they are symbols from outside the clang image.

llvm-svn: 277492

llvm-svn: 277491

Update clang tests in light of r277489.

llvm-svn: 277490

Recommitting after fixing overaggressive fastpath return in parsing.

Fix intel syntax special case identifier operands that refer to a constant
(e.g. .set <ID> n) to be interpreted as immediate not memory in parsing.

Associated commit to fix clang test commited shortly.

Reviewers: rnk

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D22585

llvm-svn: 277489

Reviewers: kcc, eugenis

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D22992

llvm-svn: 277488

Having the dtrace predicate setup to only show probes in clang filters out static initializers executed by dyld, which we do want included in the order files.

llvm-svn: 277487

I thought the directory had a lit.local.cfg, but it doesn't.
I'll add one, but for now, add the REQUIRES line. While there,
move the triple into the IR and add a datalayout.

llvm-svn: 277486

and leave a FIXME.

llvm-svn: 277485

None of GlobalISel requires the property, but this lets us use the
verifier instead of rolling our own "all instructions selected" check.

llvm-svn: 277484

After instruction selection, there should be no pre-isel generic
instructions remaining, nor should generic virtual registers be
used. Verify that.

llvm-svn: 277483

Selected: the InstructionSelect pass ran and all pre-isel generic
instructions have been eliminated; i.e., all instructions are now
target-specific or non-pre-isel generic instructions (e.g., COPY).

Since only pre-isel generic instructions can have generic virtual register
operands, this also means that all generic virtual registers have been
constrained to virtual registers (assigned to register classes) and that
all sizes attached to them have been eliminated.

This lets us enforce certain invariants across passes.
This property is GlobalISel-specific, but is always available.

llvm-svn: 277482

Fixes PR28670

Summary:
Rewrite the use optimizer to be less memory intensive and 50% faster.
Fixes PR28670

The new use optimizer works like a standard SSA renaming pass, storing
all possible versions a MemorySSA use could get in a stack, and just
tracking indexes into the stack.
This uses much less memory than caching N^2 alias query results.
It's also a lot faster.

The current version defers phi node walking to the normal walker.

Reviewers: george.burgess.iv

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D23032

llvm-svn: 277480

This is a preparatory refactoring to support conditions other than ICmpInst.

llvm-svn: 277479

Summary:
On Windows 10, this gets called after TLS has been torn down from NTDLL,
and we crash attempting to return fake_tsd. This interceptor isn't
needed after r242948 anyway, so let's remove it. The ASan runtime can
now tolerate unregistered threads calling __asan_handle_no_return.

Reviewers: vitalybuka, etienneb

Subscribers: kubabrecka, llvm-commits

Differential Revision: https://reviews.llvm.org/D23044

llvm-svn: 277478

The InstructionSelect pass assumes that RegBankSelect ran; set the
property on all tests (thereby verifying the test inputs) and require
it in the pass.

llvm-svn: 277477

RegBankSelected functions shouldn't have any generic virtual
register not assigned to a bank. Verify that.

llvm-svn: 277476

RegBankSelected: the RegBankSelect pass ran and all generic virtual
registers have been assigned to a register bank.

This lets us enforce certain invariants across passes.
This property is GlobalISel-specific, but is always available.

llvm-svn: 277475

This patch enables the vectorizer to generate both scalar and vector versions
of an integer induction variable for a given loop. Previously, we only
generated a scalar induction variable if we knew all its users were going to be
scalar. Otherwise, we generated a vector induction variable. In the case of a
loop with both scalar and vector users of the induction variable, we would
generate the vector induction variable and extract scalar values from it for
the scalar users. With this patch, we now generate both versions of the
induction variable when there are both scalar and vector users and select which
version to use based on whether the user is scalar or vector.

Differential Revision: https://reviews.llvm.org/D22869

llvm-svn: 277474

If a target triple is not specified, the default host triple is used,
which is not good for compiling inline assembler code.

Patch by Raphael Isemann!

llvm-svn: 277473

RegBankSelect and InstructionSelect run after the legalizer and
require a Legalized function: check that all instructions are legal.

Note that this should be in the MachineVerifier, but it can't use the
MachineLegalizer as it's currently in the separate GlobalISel library.
Note that the RegBankSelect verifier checks have the same layering
problem, but we only use inline methods so end up not needing to link
against the GlobalISel library.

llvm-svn: 277472

We currently use and test these, and select most of them. Mark them
as legal even though we don't go through the full ir->asm flow yet.

This doesn't currently have standalone tests, but the verifier will
soon learn to check that the regbankselect/select tests are legal.

llvm-svn: 277471

Legalized: The MachineLegalizer ran; all pre-isel generic instructions
have been legalized, i.e., all instructions are now one of:
  - generic and always legal (e.g., COPY)
  - target-specific
  - legal pre-isel generic instructions.

This lets us enforce certain invariants across passes.
This property is GlobalISel-specific, but is always available.

llvm-svn: 277470

Clang-rename Emacs integration script sometimes doesn't work correctly.

llvm-svn: 277469

Causes TSan failure on PPC64

This reverts commit r277459.

llvm-svn: 277468

llvm-svn: 277467

llvm-svn: 277466

This is only used for debug prints, but the previous hardcoded ", "
caused it to be printed unnecessarily when OnlySet, and is annoying
when adding new properties.

llvm-svn: 277465

The GISel passes don't make sense on non-SSA functions.
All GISel tests already set isSSA. Enforce that.

llvm-svn: 277464

llvm-svn: 277463

The system implementation of OSAtomicTestAndClear returns the original bit, but the TSan interceptor has a bug which always returns zero from the function. This patch fixes this and adds a test.

Differential Revision: https://reviews.llvm.org/D23061

llvm-svn: 277461