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llvm-svn: 304974
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Fix compiler warning:
polly/lib/CodeGen/PerfMonitor.cpp:81:2: warning: extra ‘;’ [-Wpedantic]
};
^
llvm-svn: 304802
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- 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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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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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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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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llvm-svn: 302620
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with a nullptr sentinel in favor of nicely typed variadic templates.
llvm-svn: 302618
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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 <etherzhhb@gmail.com>
llvm-svn: 299360
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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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