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* [llvm-exegesis][NFC] Remove extra `llvm::` qualifications.Clement Courbet2019-10-091-2/+2
| | | | | | | | | | | | | | Summary: Second patch: in the lib. Reviewers: gchatelet Subscribers: nemanjai, tschuett, MaskRay, mgrang, jsji, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D68692 llvm-svn: 374158
* [llvm-exegesis] Add options to SnippetGenerator.Clement Courbet2019-10-081-1/+1
| | | | | | | | | | | | | | | | Summary: This adds a `-max-configs-per-opcode` option to limit the number of configs per opcode. Reviewers: gchatelet Subscribers: tschuett, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D68642 llvm-svn: 374054
* [llvm-exegesis][NFC] Move BenchmarkFailure to own file.Clement Courbet2019-09-301-0/+1
| | | | | | | | | | | | | | Summary: And rename to exegesis::Failure, as it's used everytwhere. Reviewers: gchatelet Subscribers: tschuett, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D68217 llvm-svn: 373209
* [llvm-exegesis] Refactor how forbidden registers are computed.Clement Courbet2019-09-271-1/+2
| | | | | | | | | | | | | | | | | | | | Summary: Right now latency generation can incorrectly select the scratch register as a dependency-carrying register. - Move the logic for preventing register selection from Uops implementation to common SnippetGenerator class. - Aliasing detection now takes a set of forbidden registers just like random register assignment does. Reviewers: gchatelet Subscribers: tschuett, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D68084 llvm-svn: 373048
* [llvm-exegesis] Add throughput mode.Clement Courbet2019-01-301-2/+2
| | | | | | | | | | | | | | | | Summary: This just uses the latency benchmark runner on the parallel uops snippet generator. Fixes PR37698. Reviewers: gchatelet Subscribers: tschuett, RKSimon, llvm-commits Differential Revision: https://reviews.llvm.org/D57000 llvm-svn: 352632
* Update the file headers across all of the LLVM projects in the monorepoChandler Carruth2019-01-191-4/+3
| | | | | | | | | | | | | | | | | 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
* [llvm-exegesis][NFC] Add a way to declare the default counter binding for ↵Clement Courbet2018-11-091-2/+0
| | | | | | | | | | | | | | | | unbound CPUs for a target. Summary: This simplifies the code and moves everything to tablegen for consistency. This also prepares the ground for adding issue counters. Reviewers: gchatelet, john.brawn, jsji Subscribers: nemanjai, mgorny, javed.absar, kbarton, tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D54297 llvm-svn: 346489
* [llvm-exegesis] Move namespace exegesis inside llvm::Fangrui Song2018-10-221-0/+2
| | | | | | | | | | | | | | | | Summary: This allows simplifying references of llvm::foo with foo when the needs come in the future. Reviewers: courbet, gchatelet Reviewed By: gchatelet Subscribers: javed.absar, tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D53455 llvm-svn: 344922
* [llvm-exegesis] Allow measuring several instructions in a single run.Clement Courbet2018-10-171-3/+2
| | | | | | | | | | | | | | | | Summary: We try to recover gracefully on instructions that would crash the program. This includes some refactoring of runMeasurement() implementations. Reviewers: gchatelet Subscribers: tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D53371 llvm-svn: 344695
* [llvm-exegesis][NFC] Return many CodeTemplates instead of one.Guillaume Chatelet2018-10-151-6/+2
| | | | | | | | | | | | Summary: This is part one of the change where I simply changed the signature of the functions. More work need to be done to actually produce more than one CodeTemplate per instruction. Reviewers: courbet Subscribers: tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D53209 llvm-svn: 344493
* [llvm-exegesis][NFC] Pass Instruction instead of bare OpcodeGuillaume Chatelet2018-10-101-1/+1
| | | | llvm-svn: 344145
* [llvm-exegesis][NFC] Simplify code now that Instruction has more semanticGuillaume Chatelet2018-10-101-2/+0
| | | | | | | | | | Reviewers: courbet Subscribers: tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D53065 llvm-svn: 344130
* [llvm-exegesis] Output the unscaled value as well as the scaled one.Clement Courbet2018-09-261-2/+2
| | | | | | | | | | | | Summary: See PR38936 for context. Reviewers: gchatelet Subscribers: tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D52500 llvm-svn: 343081
* [llvm-exegesis][NFC] Split BenchmarkRunner classClement Courbet2018-09-131-5/+12
| | | | | | | | | | | | | | | Summary: The snippet-generation part goes to the SnippetGenerator class. This will allow benchmarking arbitrary code (see PR38437). Reviewers: gchatelet Subscribers: mgorny, tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D51979 llvm-svn: 342117
* [llvm-exegesis] Renaming classes and functions.Guillaume Chatelet2018-08-031-4/+4
| | | | | | | | | | | | Summary: Functional No Op. Reviewers: gchatelet Subscribers: tschuett, courbet, llvm-commits Differential Revision: https://reviews.llvm.org/D50231 llvm-svn: 338836
* [llvm-exegesis] Provide a way to handle memory instructions.Guillaume Chatelet2018-08-011-1/+1
| | | | | | | | | | | | | | | | | Summary: And implement memory instructions on X86. This fixes PR36906. Reviewers: gchatelet Reviewed By: gchatelet Subscribers: lebedev.ri, filcab, mgorny, tschuett, RKSimon, llvm-commits Differential Revision: https://reviews.llvm.org/D48935 llvm-svn: 338567
* [llvm-exegesis] Delegate the decision of cycle counter name to the targetJohn Brawn2018-07-021-0/+2
| | | | | | | | | | | Currently the cycle counter is taken from the subtarget schedule model, which isn't any use if the subtarget doesn't have one. Delegate the decision to the target benchmark runner, as it may know better what to do in that case, with the default being the current behaviour. Differential Revision: https://reviews.llvm.org/D48779 llvm-svn: 336099
* [llvm-exegesis] Add partial X87 support.Clement Courbet2018-06-281-6/+1
| | | | | | | | | | | | | | Summary: This enables the X86-specific X86FloatingPointStackifierPass, and allow llvm-exegesis to generate and measure X87 latency/uops for some FP ops. Reviewers: gchatelet Subscribers: tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D48592 llvm-svn: 335815
* [llvm-exegesis] Get the BenchmarkRunner from the ExegesisTarget.Clement Courbet2018-06-261-3/+2
| | | | | | | | | | | | | | | Summary: This allows targets to override code generation for some instructions. As an example of override, this also moves ad-hoc instruction filtering for X86 into the X86 ExegesisTarget. Reviewers: gchatelet Subscribers: mgorny, tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D48587 llvm-svn: 335582
* [llvm-exegesis] Use a Prototype to defer picking a value for free vars.Guillaume Chatelet2018-06-201-7/+4
| | | | | | | | | | | | Summary: Introducing a Prototype object to capture Variables that must be set but keeps degrees of freedom as Invalid. This allows exploring non constraint variables later on. Reviewers: courbet Subscribers: tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D48316 llvm-svn: 335105
* [llvm-exegesis] Cleaner design without mutable data.Guillaume Chatelet2018-06-131-2/+15
| | | | | | | | | | | | Summary: Previous design was relying on the 'mutate' keyword and was quite confusing. This version separate mutable from immutable data and makes it clearer what changes and what doesn't. Reviewers: courbet Subscribers: tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D48020 llvm-svn: 334596
* [llvm-exegesis] Make BenchmarkRunner handle multiple configurations.Guillaume Chatelet2018-06-071-3/+3
| | | | | | | | | | | | Summary: BenchmarkRunner subclasses can now create many configurations - although this patch still generates one. Reviewers: courbet Subscribers: tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D47877 llvm-svn: 334197
* [llvm-exegesis] Add a Configuration object for Benchmark.Guillaume Chatelet2018-06-071-3/+3
| | | | | | | | | | | | Summary: This is the first step to have the BenchmarkRunner create and measure many different configurations (different initial values for instance). Reviewers: courbet Subscribers: tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D47826 llvm-svn: 334169
* [llvm-exegesis] move Mode from Key to BenchmarResult.Clement Courbet2018-06-061-1/+1
| | | | | | | | | | | | | | | | | | 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
* [llvm-exegesis][NFC] Use an enum instead of a string for benchmark mode.Clement Courbet2018-06-041-1/+1
| | | | | | | | | | | | Summary: YAML encoding is backwards-compatible. Reviewers: gchatelet Subscribers: tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D47705 llvm-svn: 333886
* reland r332579: [llvm-exegesis] Update to cover latency through another opcode.Clement Courbet2018-05-171-5/+5
| | | | | | | | | | | | | | 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
* Revert r332579 "[llvm-exegesis] Update to cover latency through another opcode."Clement Courbet2018-05-171-5/+5
| | | | | | The revision failed to update the ARM tests. llvm-svn: 332580
* [llvm-exegesis] Update to cover latency through another opcode.Clement Courbet2018-05-171-5/+5
| | | | | | | | | | | | 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
* Re-land r329156 "Add llvm-exegesis tool."Clement Courbet2018-04-041-0/+41
| | | | | | Fixed to depend on and initialize the native target instead of X86. llvm-svn: 329169
* Revert r329156 "Add llvm-exegesis tool."Clement Courbet2018-04-041-41/+0
| | | | | | Breaks a bunch of bots. llvm-svn: 329157
* Add llvm-exegesis tool.Clement Courbet2018-04-041-0/+41
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
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