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* [llvm-mca] Move views and stats into a Views subdir. NFC.Matt Davis2018-08-241-171/+0
| | | | llvm-svn: 340645
* [llvm-mca] Simplify eventing by adding an onEvent templated method.Matt Davis2018-07-121-1/+1
| | | | | | | | | | | | | | | | | | | | Summary: This patch eliminates some redundancy in iterating across Listeners for the Instruction and Stall HWEvents, by introducing a template onEvent routine. This change was suggested by @courbet in https://reviews.llvm.org/D48576. I hope that this patch addresses that suggestion appropriately. I do like this change better than what we had previously. Reviewers: andreadb, courbet, RKSimon Reviewed By: andreadb, courbet Subscribers: javed.absar, tschuett, gbedwell, llvm-commits, courbet Differential Revision: https://reviews.llvm.org/D48672 llvm-svn: 336916
* [llvm-mca] use a formatted_raw_ostream to insert padding and get rid of ↵Andrea Di Biagio2018-05-151-42/+40
| | | | | | tabs. NFC llvm-svn: 332381
* [llvm-mca] Strip leading tabs and spaces from instruction strings before ↵Andrea Di Biagio2018-05-151-3/+14
| | | | | | printing. NFC llvm-svn: 332361
* [llvm-mca] Avoid exposing index values in the MCA interfaces.Matt Davis2018-05-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | Summary: This patch eliminates many places where we originally needed to pass index values to represent an instruction. The index is still used as a key, in various parts of MCA. I'm not comfortable eliminating the index just yet. By burying the index in the instruction, we can avoid exposing that value in many places. Eventually, we should consider removing the Instructions list in the Backend all together, it's only used to hold and reclaim the memory for the allocated Instruction instances. Instead we could pass around a smart pointer. But that's a separate discussion/patch. Reviewers: andreadb, courbet, RKSimon Reviewed By: andreadb Subscribers: javed.absar, tschuett, gbedwell, llvm-commits Differential Revision: https://reviews.llvm.org/D46367 llvm-svn: 331660
* [llvm-mca] minor tweak to the resource pressure printing functionality. NFC.Andrea Di Biagio2018-05-051-1/+1
| | | | llvm-svn: 331590
* [llvm-mca] Simplify code. NFCAndrea Di Biagio2018-04-101-30/+18
| | | | llvm-svn: 329711
* Reapply "[llvm-mca] Do not separate iterations with a newline in the ↵Andrea Di Biagio2018-04-101-1/+2
| | | | | | | | timeline view." This reapplies r329403 with a fix for the floating point rounding issue. llvm-svn: 329680
* [llvm-mca] run clang-format on all files.Andrea Di Biagio2018-03-241-1/+0
| | | | | | This also addresses Simon's review comment in D44839. llvm-svn: 328428
* [llvm-mca] update the ResourcePressureView after r328335. NFC.Andrea Di Biagio2018-03-231-7/+7
| | | | | | This should have been part of r328335. I forgot to svn add these files. llvm-svn: 328340
* [llvm-mca] Simplify code. NFCAndrea Di Biagio2018-03-221-13/+11
| | | | llvm-svn: 328187
* [llvm-mca] Refactor event listeners to make the backend agnostic to event types.Clement Courbet2018-03-131-4/+7
| | | | | | | | | | Summary: This is a first step towards making the pipeline configurable. Subscribers: llvm-commits, andreadb Differential Revision: https://reviews.llvm.org/D44309 llvm-svn: 327389
* [llvm-mca] Views are now independent from resource masks. NFCIAndrea Di Biagio2018-03-101-5/+2
| | | | | | | | | This change removes method Backend::getProcResourceMasks() and simplifies some logic in the Views. This effectively removes yet another dependency between the views and the Backend. No functional change intended. llvm-svn: 327214
* [llvm-mca] LLVM Machine Code Analyzer.Andrea Di Biagio2018-03-081-0/+176
llvm-mca is an LLVM based performance analysis tool that can be used to statically measure the performance of code, and to help triage potential problems with target scheduling models. llvm-mca uses information which is already available in LLVM (e.g. scheduling models) to statically measure the performance of machine code in a specific cpu. Performance is measured in terms of throughput as well as processor resource consumption. The tool currently works for processors with an out-of-order backend, for which there is a scheduling model available in LLVM. The main goal of this tool is not just to predict the performance of the code when run on the target, but also help with diagnosing potential performance issues. Given an assembly code sequence, llvm-mca estimates the IPC (instructions per cycle), as well as hardware resources pressure. The analysis and reporting style were mostly inspired by the IACA tool from Intel. This patch is related to the RFC on llvm-dev visible at this link: http://lists.llvm.org/pipermail/llvm-dev/2018-March/121490.html Differential Revision: https://reviews.llvm.org/D43951 llvm-svn: 326998
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