Commit Graph

17 Commits

Author SHA1 Message Date
Clement Courbet 4273e1e828 [llvm-exegesis] Print the whole snippet in analysis.
Summary:
On hover, the whole asm snippet is displayed, including operands.

This requires the actual assembly output instead of just the MCInsts:
This is because some pseudo-instructions get lowered to actual target
instructions during codegen (e.g. ABS_Fp32 -> SSE or X87).

Reviewers: gchatelet

Subscribers: mgorny, tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D48164

llvm-svn: 334805
2018-06-15 07:30:45 +00:00
Clement Courbet 49fad1cbf2 [llvm-exegesis] Use BenchmarkResult::Instructions instead of OpcodeName
Summary:
Get rid of OpcodeName.

To remove the opcode name from an old file:
```
cat old_file | sed '/opcode_name.*/d'
```

Reviewers: gchatelet

Subscribers: tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D48121

llvm-svn: 334691
2018-06-14 06:57:52 +00:00
Zachary Turner 1f67a3cba9 [FileSystem] Split up the OpenFlags enumeration.
This breaks the OpenFlags enumeration into two separate
enumerations: OpenFlags and CreationDisposition.  The first
controls the behavior of the API depending on whether or not
the target file already exists, and is not a flags-based
enum.  The second controls more flags-like values.

This yields a more easy to understand API, while also allowing
flags to be passed to the openForRead api, where most of the
values didn't make sense before.  This also makes the apis more
testable as it becomes easy to enumerate all the configurations
which make sense, so I've added many new tests to exercise all
the different values.

llvm-svn: 334221
2018-06-07 19:58:58 +00:00
Guillaume Chatelet 8c91d4cb04 [llvm-exegesis] Improve error reporting.
Summary: BenchmarkResult IO functions now return an Error or Expected so caller can deal take proper action.

Reviewers: courbet

Subscribers: tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D47868

llvm-svn: 334167
2018-06-07 07:51:16 +00:00
Guillaume Chatelet 083a0c1621 [llvm-exegesis] Serializes instruction's operand in BenchmarkResult's key.
Summary: Follow up patch to https://reviews.llvm.org/D47764.

Reviewers: courbet

Subscribers: tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D47785

llvm-svn: 334165
2018-06-07 07:40:40 +00:00
Clement Courbet 62b34fa89a [llvm-exegesis] move Mode from Key to BenchmarResult.
Moves the Mode field out of the Key. The existing yaml benchmark results can be fixed with the following script:

```
readonly FILE=$1
readonly MODE=latency # Change to uops to fix a uops benchmark.
cat $FILE | \
  sed "/^\ \+mode:\ \+$MODE$/d" | \
  sed "/^cpu_name.*$/i mode:            $MODE"
```

Differential Revision: https://reviews.llvm.org/D47813

Authored by: Guillaume Chatelet

llvm-svn: 334079
2018-06-06 09:42:36 +00:00
Clement Courbet 53d35d2dc4 [llvm-exegesis] Add instructions to BenchmarkResult Key.
We want llvm-exegesis to explore instructions (effect of initial register values, effect of operand selection). To enable this a BenchmarkResult muststore all the relevant data in its key. This patch starts adding such data. Here we simply allow to store the generated instructions, following patches will add operands and initial values for registers.

https://reviews.llvm.org/D47764

Authored by: Guilluame Chatelet

llvm-svn: 334008
2018-06-05 10:56:19 +00:00
Clement Courbet 2cb97b95a2 [llvm-exegesis][NFC] Use an enum instead of a string for benchmark mode.
Summary: YAML encoding is backwards-compatible.

Reviewers: gchatelet

Subscribers: tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D47705

llvm-svn: 333886
2018-06-04 11:43:40 +00:00
Clement Courbet ae8ae5dc78 [llvm-exegesis] Analysis: Show value extents.
Summary: Screenshot attached in phabricator.

Reviewers: gchatelet

Subscribers: tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D47318

llvm-svn: 333181
2018-05-24 12:41:02 +00:00
Clement Courbet 0e69e2d747 reland r332579: [llvm-exegesis] Update to cover latency through another opcode.
Restructuring the code to measure latency and uops.
The end goal is to have this program spawn another process to deal with SIGILL and other malformed programs. It is not yet the case in this redesign, it is still the main program that runs the code (and may crash).
It now uses BitVector instead of Graph for performance reasons.

https://reviews.llvm.org/D46821

(with fixed ARM tests)

Authored by Guillaume Chatelet

llvm-svn: 332592
2018-05-17 10:52:18 +00:00
Clement Courbet 295a554ce4 Revert r332579 "[llvm-exegesis] Update to cover latency through another opcode."
The revision failed to update the ARM tests.

llvm-svn: 332580
2018-05-17 08:12:29 +00:00
Clement Courbet ee110fb735 [llvm-exegesis] Update to cover latency through another opcode.
Restructuring the code to measure latency and uops.
    The end goal is to have this program spawn another process to deal with SIGILL and other malformed programs. It is not yet the case in this redesign, it is still the main program that runs the code (and may crash).
    It now uses BitVector instead of Graph for performance reasons.

    https://reviews.llvm.org/D46821

    Authored by Guillaume Chatelet

llvm-svn: 332579
2018-05-17 07:38:21 +00:00
Clement Courbet a66bfaa4c0 [llvm-exegesis] Split AsmTemplate.Name into components.
Summary:
AsmTemplate becomes IntructionBenchmarkKey, which has three components.
This allows retreiving the opcode for analysis.

Reviewers: gchatelet

Subscribers: tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D46873

llvm-svn: 332348
2018-05-15 13:07:05 +00:00
Clement Courbet 7b7c27afca [llvm-exegesis] Allow lists of BenchmarkResults to be parsed as std::vector<BenchmarkResult>.
llvm-svn: 332221
2018-05-14 09:01:22 +00:00
Clement Courbet ac74acdefe Re-land r329156 "Add llvm-exegesis tool."
Fixed to depend on and initialize the native target instead of X86.

llvm-svn: 329169
2018-04-04 11:37:06 +00:00
Clement Courbet 7949b3b1dc Revert r329156 "Add llvm-exegesis tool."
Breaks a bunch of bots.

llvm-svn: 329157
2018-04-04 08:22:54 +00:00
Clement Courbet 7287b2c1ec Add llvm-exegesis tool.
Summary:
[llvm-exegesis][RFC] Automatic Measurement of Instruction Latency/Uops

This is the code corresponding to the RFC "llvm-exegesis Automatic Measurement of Instruction Latency/Uops".

The RFC is available on the LLVM mailing lists as well as the following document
for easier reading:
https://docs.google.com/document/d/1QidaJMJUyQdRrFKD66vE1_N55whe0coQ3h1GpFzz27M/edit?usp=sharing

Subscribers: mgorny, gchatelet, orwant, llvm-commits

Differential Revision: https://reviews.llvm.org/D44519

llvm-svn: 329156
2018-04-04 08:13:32 +00:00