Use true/false instead of 1/0 (NFC)

Identified by modernize-use-bool-literals.

[OpaquePtrs] Remove some uses of type-less CreateLoad APIs (NFC)

Explicitly pass loaded type when creating loads, in preparation
for the deprecation of these APIs.

There are still a couple of uses

[OpaquePtrs] Remove some uses of type-less CreateLoad APIs (NFC)

Explicitly pass loaded type when creating loads, in preparation
for the deprecation of these APIs.

There are still a couple of uses left.

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[Polly] Replace use of std::stringstream. NFC.

Use of std::-style (io)streams is discouraged in the LLVM coding style
(https://llvm.org/docs/CodingStandards.html#include-iostream-is-forbidden).
Repl

[Polly] Replace use of std::stringstream. NFC.

Use of std::-style (io)streams is discouraged in the LLVM coding style
(https://llvm.org/docs/CodingStandards.html#include-iostream-is-forbidden).
Replace with a use of llvm::Twine (which uses llvm::raw_ostream behind
the scenes).

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[IR] Include target specific intrinsic headers

After D71320, target-specific intrinsic headers should be included.

Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the ne

Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636

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[PerfMonitor] Fix rdtscp callsites

Summary:
Update all rdtscp callsites in PerfMonitor so that they conform with the signature changes introduced in r341698.

Reviewers: grosser, bollu

Subscribers:

[PerfMonitor] Fix rdtscp callsites

Summary:
Update all rdtscp callsites in PerfMonitor so that they conform with the signature changes introduced in r341698.

Reviewers: grosser, bollu

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D51928

llvm-svn: 341946

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Fix a lot of typos. NFC.

llvm-svn: 304974

[CodeGen] Remove extra ';'. NFC.

Fix compiler warning:

polly/lib/CodeGen/PerfMonitor.cpp:81:2: warning: extra ‘;’ [-Wpedantic]
};
^

llvm-svn: 304802

[CodeGen] Track trip counts per-scop for performance measurement.

- Add a counter that is incremented once on exit from a scop.

- Test cases got split into two: one to test the cycles, and another

[CodeGen] Track trip counts per-scop for performance measurement.

- Add a counter that is incremented once on exit from a scop.

- Test cases got split into two: one to test the cycles, and another one
to test trip counts.

- Sample output:
```name=sample-output.txt
scop function, entry block name, exit block name, total time, trip count
warmup, %entry.split, %polly.merge_new_and_old, 5180, 1
f, %entry.split, %polly.merge_new_and_old, 409944, 500
g, %entry.split, %polly.merge_new_and_old, 1226, 1
```

Differential Revision: https://reviews.llvm.org/D33822

llvm-svn: 304543

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[CodeGen] Print performance counter information in CSV.

This ensures that tools can parse performance information which Polly
generates easily.

- Sample output:
```name=out.csv
scop function, entry

[CodeGen] Print performance counter information in CSV.

This ensures that tools can parse performance information which Polly
generates easily.

- Sample output:
```name=out.csv
scop function, entry block name, exit block name, total time
warmup, %entry.split, %polly.merge_new_and_old, 1960
f, %entry.split, %polly.merge_new_and_old, 1238
g, %entry.split, %polly.merge_new_and_old, 1218
```

- Example code to parse output:
```lang=python, name=example-parse.py
import asciitable
import sys

table = asciitable.read('out.csv', delimiter=',')
asciitable.write(table, sys.stdout, delimiter=',')
```

llvm-svn: 304533

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[NFC] [CodeGen] Bail out of per-scop performance reporting if not supported.

We should bail out if performance monitoring is not supported, since
we would have no information to print per-scop, and

[NFC] [CodeGen] Bail out of per-scop performance reporting if not supported.

We should bail out if performance monitoring is not supported, since
we would have no information to print per-scop, and `FinalStartBB`,
`ReturnFromFinal` would be `nullptr`.

Assert that these are not `nullptr` if performance monitoring is supported.

llvm-svn: 304529

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[CodeGen] Extend Performance Counter to track per-scop information.

Previously, we would generate one performance counter for all scops.
Now, we generate both the old information, as well as a per-s

[CodeGen] Extend Performance Counter to track per-scop information.

Previously, we would generate one performance counter for all scops.
Now, we generate both the old information, as well as a per-scop
performance counter to generate finer grained information.

This patch needed a way to generate a unique name for a `Scop`.
The start region, end region, and function name combined provides a
unique `Scop` name. So, `Scop` has a new public API to provide its start
and end region names.

Differential Revision: https://reviews.llvm.org/D33723

llvm-svn: 304528

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Fix formatting in Polly

llvm-svn: 302620

Update Polly for LLVM API change r302571 that removed varargs functions
with a nullptr sentinel in favor of nicely typed variadic templates.

llvm-svn: 302618

[PerfMonitor] Use Intrinsics::getDeclaration

Instead of creating the declaration ourselves, we obtain it directly from the
LLVM intrinsic definitions. This addresses a post-review comment for r29935

[PerfMonitor] Use Intrinsics::getDeclaration

Instead of creating the declaration ourselves, we obtain it directly from the
LLVM intrinsic definitions. This addresses a post-review comment for r299359.

Suggested-by: Hongzing Zheng <[email protected]>
llvm-svn: 299360

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[CodeGen] Add Performance Monitor

Add support for -polly-codegen-perf-monitoring. When performance monitoring
is enabled, we emit performance monitoring code during code generation that
prints after

[CodeGen] Add Performance Monitor

Add support for -polly-codegen-perf-monitoring. When performance monitoring
is enabled, we emit performance monitoring code during code generation that
prints after program exit statistics about the total number of cycles executed
as well as the number of cycles spent in scops. This gives an estimate on how
useful polyhedral optimizations might be for a given program.

Example output:

Polly runtime information
-------------------------
Total: 783110081637
Scops: 663718949365

In the future, we might also add functionality to measure how much time is spent
in optimized scops and how many cycles are spent in the fallback code.

Reviewers: bollu,sebpop

Tags: #polly

Differential Revision: https://reviews.llvm.org/D31599

llvm-svn: 299359

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