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* [llvm-exegesis][NFC] internal changesGuillaume Chatelet2019-12-181-14/+42
| | | | | | | | | | | | | | Summary: BitVectors are now cached to lower memory utilization. Instructions have reference semantics. Reviewers: courbet Subscribers: sdardis, tschuett, jrtc27, atanasyan, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D71653
* [llvm-exegesis][NFC] Remove extra `llvm::` qualifications.Clement Courbet2019-10-091-26/+26
| | | | | | | | | | | | | | 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] Refactor how forbidden registers are computed.Clement Courbet2019-09-271-2/+4
| | | | | | | | | | | | | | | | | | | | 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][NFC] Remove dead code.Clement Courbet2019-09-261-4/+0
| | | | | | | | | | | | | | Summary: `hasAliasingImplicitRegistersThrough()` is no longer used. Reviewers: gchatelet Subscribers: tschuett, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D68078 llvm-svn: 372968
* 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] Implements a cache of Instruction objects.Guillaume Chatelet2018-10-241-2/+19
| | | | llvm-svn: 345130
* [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-exegeis] Computing Latency configuration upfront so we can generate ↵Guillaume Chatelet2018-10-171-3/+5
| | | | | | | | | | | | | | | | many CodeTemplates at once. Summary: LatencyGenerator now computes all possible mode of serial execution for an Instruction upfront and generates CodeTemplate for the ones that give the best results (e.g. no need to generate a two instructions snippet when repeating a single one would do). The next step is to generate even more configurations for cases (e.g. for XOR we should generate "XOR EAX, EAX, EAX" and "XOR EAX, EAX, EBX") Reviewers: courbet Reviewed By: courbet Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D53320 llvm-svn: 344689
* [llvm-exegesis] Fix always true assertGuillaume Chatelet2018-10-101-1/+1
| | | | llvm-svn: 344151
* [llvm-exegesis][NFC] Pass Instruction instead of bare OpcodeGuillaume Chatelet2018-10-101-0/+1
| | | | llvm-svn: 344145
* [llvm-exegesis][NFC] Code simplificationGuillaume Chatelet2018-10-101-2/+2
| | | | | | | | | | | | Summary: Simplify code by having LLVMState hold the RegisterAliasingTrackerCache. Reviewers: courbet Subscribers: tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D53078 llvm-svn: 344143
* [llvm-exegesis] Remove unused variable, add more semantic to Instruction.Guillaume Chatelet2018-10-101-9/+16
| | | | | | | | | | Reviewers: courbet Subscribers: tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D53062 llvm-svn: 344127
* Fix function case.Guillaume Chatelet2018-10-091-1/+1
| | | | llvm-svn: 344051
* [llvm-exegesis] Fix invalid return type and add a Dump function.Guillaume Chatelet2018-10-091-3/+7
| | | | | | | | | | Reviewers: courbet Subscribers: tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D53020 llvm-svn: 344050
* [llvm-exegesis] Fix wrong index type.Guillaume Chatelet2018-10-091-1/+1
| | | | llvm-svn: 344032
* [llvm-exegesis][NFC] Use accessors for Operand.Guillaume Chatelet2018-10-091-7/+52
| | | | | | | | | | | | Summary: This moves checking logic into the accessors and makes the structure smaller. It will also help when/if Operand are generated from the TD files. Subscribers: tschuett, courbet, llvm-commits Differential Revision: https://reviews.llvm.org/D52982 llvm-svn: 344028
* [llvm-exegesis][NFC] moving code around.Guillaume Chatelet2018-09-271-43/+0
| | | | | | | | | | | | Summary: Renaming InstructionBuilder into InstructionTemplate and moving code generation tools from MCInstrDescView to CodeTemplate. Reviewers: courbet Subscribers: tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D52592 llvm-svn: 343188
* [llvm-exegesis][NFC] Move CodeTemplate to it's own file.Guillaume Chatelet2018-09-261-21/+0
| | | | | | | | | | | | | | Summary: This is is preparation of exploring value ranges. Reviewers: courbet Reviewed By: courbet Subscribers: mgorny, tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D52542 llvm-svn: 343098
* [llvm-exegesis] Renaming classes and functions.Guillaume Chatelet2018-08-031-25/+25
| | | | | | | | | | | | Summary: Functional No Op. Reviewers: gchatelet Subscribers: tschuett, courbet, llvm-commits Differential Revision: https://reviews.llvm.org/D50231 llvm-svn: 338836
* [llvm-exegesis] Rename InstructionInstance into InstructionBuilder.Guillaume Chatelet2018-08-021-11/+11
| | | | | | | | | | Summary: Non functional change. Subscribers: tschuett, courbet, llvm-commits Differential Revision: https://reviews.llvm.org/D50176 llvm-svn: 338701
* [llvm-exegesis] Provide a way to handle memory instructions.Guillaume Chatelet2018-08-011-6/+10
| | | | | | | | | | | | | | | | | 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] Generate snippet setup code.Clement Courbet2018-06-251-3/+8
| | | | | | | | | | | | | | | Summary: This ensures that the snippet always sees the same values for registers, making measurements reproducible. This will also allow exploring different values. Reviewers: gchatelet Subscribers: tschuett, llvm-commits Differential Revision: https://reviews.llvm.org/D48542 llvm-svn: 335465
* [llvm-exegesis][NFC] Fix `Operand` class comments.Clement Courbet2018-06-251-2/+2
| | | | llvm-svn: 335450
* [llvm-exegesis] Remove noexcept in r335105.Clement Courbet2018-06-201-4/+4
| | | | | | gcc checks for transitivity (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53903) llvm-svn: 335109
* [llvm-exegesis] Use a Prototype to defer picking a value for free vars.Guillaume Chatelet2018-06-201-3/+33
| | | | | | | | | | | | 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 Chatelet2018-06-131-22/+33
| | | | | | | | | | | | 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
* reland r332579: [llvm-exegesis] Update to cover latency through another opcode.Clement Courbet2018-05-171-0/+150
| | | | | | | | | | | | | | 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 Courbet2018-05-171-150/+0
| | | | | | The revision failed to update the ARM tests. llvm-svn: 332580
* [llvm-exegesis] Update to cover latency through another opcode.Clement Courbet2018-05-171-0/+150
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
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