Commit Graph

33 Commits

Author SHA1 Message Date
Roman Lebedev
1d1330c546 [NFC][llvm-exegesis] Refactor ResolvedSchedClass & friends
Summary:
`ResolvedSchedClass` will need to be used outside of `Analysis`
(before `InstructionBenchmarkClustering` even), therefore promote
it into a non-private top-level class, and while there also
move all of the functions that are only called by `ResolvedSchedClass`
into that same new file.

Reviewers: courbet, gchatelet

Reviewed By: courbet

Subscribers: mgorny, tschuett, mgrang, jdoerfert, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59993

llvm-svn: 357259
2019-03-29 14:24:27 +00:00
Jinsong Ji
5fd3e75478 [PowerPC][llvm-exegesis] Add a PowerPC target
This is patch to add PowerPC target to llvm-exegesis.
The target does just enough to be able to run llvm-exegesis in latency mode for at least some opcodes.

Differential Revision: https://reviews.llvm.org/D54185

llvm-svn: 346411
2018-11-08 16:51:42 +00:00
Clement Courbet
0d79aaf1a7 Revert "[llvm-exegesis] Add a snippet generator to generate snippets to compute ROB sizes."
This reverts accidental commit rL346394.

llvm-svn: 346398
2018-11-08 12:09:45 +00:00
Clement Courbet
c0950ae990 [llvm-exegesis] Add a snippet generator to generate snippets to compute ROB sizes.
llvm-svn: 346394
2018-11-08 11:45:14 +00:00
Guillaume Chatelet
7f8d310b76 [llvm-exegesis][NFC] Move CodeTemplate to it's own file.
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
2018-09-26 11:57:24 +00:00
Clement Courbet
1e8fdbe3c3 [llvm-exegesis] Fix PR39021.
Summary:
The `set` statements was incorrectly reading the value of the local variable and
setting the value of the parent variable.

Reviewers: tycho, gchatelet, john.brawn

Subscribers: mgorny, tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D52343

llvm-svn: 342865
2018-09-24 08:39:48 +00:00
Guillaume Chatelet
cd488efe7e [llvm-exegesis] Add predefined floating point values so we can test impact of special values on latency.
Summary: This will be useful to generate many configurations and test instruction regimes (NaN, Inf, subnormal, normal).

Reviewers: courbet

Subscribers: mgorny, tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D51858

llvm-svn: 342369
2018-09-17 11:09:32 +00:00
Nico Weber
b09a8c9bd9 Revert r342148 (and follow-on fix attempts r342154, r342180, r342182, r342193)
Many bots buildling with make have been broken for several days, e.g.
http://lab.llvm.org:8011/builders/lld-x86_64-darwin13

llvm-svn: 342336
2018-09-15 19:04:27 +00:00
Richard Diamond
f29b36c76d [cmake] Fix missing DEPENDS.
Not sure how I didn't catch this.

llvm-svn: 342154
2018-09-13 17:10:44 +00:00
Richard Diamond
f3063baa6e Renovate CMake files in the llvm-(cfi-verify|exegesis|mca) tools.
llvm-svn: 342148
2018-09-13 16:15:03 +00:00
Clement Courbet
d939f6d013 [llvm-exegesis][NFC] Split BenchmarkRunner class
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
2018-09-13 07:40:53 +00:00
John Brawn
c4ed60042f [llvm-exegesis] Add an AArch64 target
The target does just enough to be able to run llvm-exegesis in latency mode for
at least some opcodes.

Differential Revision: https://reviews.llvm.org/D48780

llvm-svn: 336187
2018-07-03 10:10:29 +00:00
John Brawn
346856dc6c [llvm-exegesis] Change how the native architecture is determined
Currently the llvm-exegesis native architecture is determined by comparing the
llvm native architecture with X86, so to add a new target would mean adding a
new check. Change this to building up a list of the targets llvm-exegesis
supports then using that, as this means that when adding a new target you just
add the target to the list of supported targets.

Differential Revision: https://reviews.llvm.org/D48778

llvm-svn: 336105
2018-07-02 13:53:46 +00:00
Clement Courbet
4860b98443 [llvm-exegesis] Get the BenchmarkRunner from the ExegesisTarget.
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
2018-06-26 08:49:30 +00:00
Clement Courbet
44b4c54e26 Re-land r335038 "[llvm-exegesis] A mechanism to add target-specific functionality.""
Fix typo: LLVM_NATIVE_ARCH -> LLVM_EXEGESIS_NATIVE_ARCH.

llvm-svn: 335041
2018-06-19 11:28:59 +00:00
Clement Courbet
46751785ee Revert r335038 "[llvm-exegesis] A mechanism to add target-specific functionality."
Breaks buildbots.

llvm-svn: 335040
2018-06-19 10:54:12 +00:00
Clement Courbet
6780b5f97d [llvm-exegesis] A mechanism to add target-specific functionality.
Summary: This is a step towards implementing memory operands and X87.

Reviewers: gchatelet

Subscribers: mgorny, tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D48210

llvm-svn: 335038
2018-06-19 10:39:50 +00:00
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
Guillaume Chatelet
0782881161 [llvm-exegesis] Move libpfm linking to LLVMExegesis.
Summary: This patch moves linking of libpfm from different places to a single one.

Reviewers: courbet

Subscribers: mgorny, tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D48075

llvm-svn: 334499
2018-06-12 13:07:16 +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
37f0ca0328 [llvm-exegesis] Add an analysis mode.
Summary:
The analysis mode gives the user a clustered view of the measurement results.
Next steps are (requires the split ok AsmTemplate.Name into {mnemonic, mode}):
 - Show the sched class.
 - Highlight any inconsistencies with the checked-in data.

Reviewers: gchatelet

Subscribers: mgorny, llvm-commits, tschuett

Differential Revision: https://reviews.llvm.org/D46865

llvm-svn: 332344
2018-05-15 12:08:00 +00:00
Clement Courbet
559d1e34df [llvm-exegesis] InMemoryAssembler: handle return-less targets (e.g. arm).
Summary: Arm does not have a ret code per se.

Reviewers: gchatelet

Subscribers: mgorny, javed.absar, kristof.beyls, tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D45672

llvm-svn: 332331
2018-05-15 07:40:21 +00:00
Clement Courbet
dffc4ca4f2 [llvm-exegesis] Revert accidentally commited code.
llvm-svn: 332231
2018-05-14 11:35:37 +00:00
Clement Courbet
3d479fe81c [llvm-exegesis] Add an analysis mode.
The analysis mode gives the user a clustered view of the measurement results and
highlights any inconsistencies with the checked-in data.

llvm-svn: 332229
2018-05-14 11:30:56 +00:00
Clement Courbet
967154148d Re-land r331622 "[llvm-exegesis] Add a library to cluster benchmark results."
Add missing move.

llvm-svn: 331624
2018-05-07 09:09:48 +00:00
Clement Courbet
e9174bc2c8 Revert r331622 "[llvm-exegesis] Add a library to cluster benchmark results."
Breaks build over llvm::Error copy construction.

llvm-svn: 331623
2018-05-07 08:30:18 +00:00
Clement Courbet
a7fb139e9d [llvm-exegesis] Add a library to cluster benchmark results.
Reviewers: gchatelet

Subscribers: mgorny, tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D46432

llvm-svn: 331622
2018-05-07 08:20:00 +00:00
Clement Courbet
908dd38793 [llvm-exegesis] Add missing link libraries.
llvm-svn: 329185
2018-04-04 12:58:41 +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