llvm-project.git/llvm/test/Transforms/FunctionSpecialization/function-specialization.ll, branch users/nico/python-2

[FuncSpec] Adjust the names of specializations and promoted stack values

2023-09-19T13:40:31+00:00

Currently the naming scheme is a bit funky; the specializations are named
after the original function followed by an arbitrary decimal number. This
makes it hard to debug inlined specializations of recursive functions.
With this patch I am adding ".specialized." in between of the original
name and the suffix, which is now a single increment counter.

Revert "[FuncSpec] Replace LoopInfo with BlockFrequencyInfo"

2023-05-30T12:49:03+00:00

As reported on https://reviews.llvm.org/D150375#4367861 and
following, this change causes PDT invalidation issues. Revert
it and dependent commits.

This reverts commit 0524534d5220da5ecb2cd424a46520184d2be366.
This reverts commit ced90d1ff64a89a13479a37a3b17a411a3259f9f.
This reverts commit 9f992cc9350a7f7072a6dbf018ea07142ea7a7ed.
This reverts commit 1b1232047e83b69561fd64b9547cb0a0d374473a.

[FuncSpec] Enable specialization of literal constants.

2023-05-25T08:55:46+00:00

To do so we have to tweak the cost model such that specialization
does not trigger excessively.

Differential Revision: https://reviews.llvm.org/D150649

[FuncSpec][NFC] Command line option renaming.

2023-03-15T18:03:44+00:00

Standardize all options with 'funcspec' prefix and shorter abreviations.

Differential Revision: https://reviews.llvm.org/D145378

[IPSCCP] Create a Pass parameter to control specialization of functions.

2022-12-23T16:54:45+00:00

Required for D140210 in order to disable FuncSpec at {Os, Oz}
optimization levels.

Differential Revision: https://reviews.llvm.org/D140564

[FuncSpec] Make the Function Specializer part of the IPSCCP pass.

2022-12-10T14:39:49+00:00

Reland 877a9f9abec61f06e39f1cd872e37b828139c2d1 since D138654 (parent)
has been fixed with 9ebaf4fef4aac89d4eff08e48185d61bc893f14e and with
8f1e11c5a7d70f96943a72649daa69f152d73e90.

Differential Revision: https://reviews.llvm.org/D126455

Revert "[FuncSpec] Make the Function Specializer part of the IPSCCP pass."

2022-12-08T12:41:43+00:00

This reverts commit 877a9f9abec61f06e39f1cd872e37b828139c2d1.

It depends on the parent revision 42c2dc401742266da3e0251b6c1ca491f4779963
which needs to be reverted as it broke some buildbots, so reverting both.

[FuncSpec] Make the Function Specializer part of the IPSCCP pass.

2022-12-08T12:14:27+00:00

The aim of this patch is to minimize the compilation time overhead of
running Function Specialization. It is about 40% slower to run as a
standalone pass (IPSCCP + FuncSpec vs IPSCCP with FuncSpec) according
to my measurements. I compiled the llvm testsuite with NewPM-O3 + LTO
and measured single threaded [user + system] time of IPSCCP and FuncSpec
by passing the '-time-passes' option to lld. Then I compared the two
configurations in terms of Instruction Count of the total compilation
(not of the individual passes) as in https://llvm-compile-time-tracker.com.
Geomean for non-LTO builds is -0.25% and LTO is -0.5% approximately.

You can find more info below:

https://discourse.llvm.org/t/rfc-should-we-enable-function-specialization/61518

Differential Revision: https://reviews.llvm.org/D126455

[NFC] Port all FunctionSpecialization tests to `-passes=` syntax

2022-12-07T23:38:43+00:00

FunctionSpecialization: Convert tests to opaque pointers

2022-11-28T14:35:48+00:00