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Roman Lebedev 1a65a221d6 [LoopIdiom] 'left-shift until bittest' idiom: support rewriting loop as countable, allow extra cruft 
The current state of the transform is still not enough to support
my motivational pattern, because it has one more "induction variable".

I have delayed posting this patch, because originally even just rewriting
the loop as countable wasn't enough to nicely transform my motivational pattern,
because i expected that extra IV to be rewritten afterwards,
but it wasn't happening until i fixed that in D91800.

So, this patch allows the  'left-shift until bittest' loop idiom
as long as the inserted ops are cheap,
and lifts any and all extra use checks on the instructions.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D92754
2020-12-23 22:28:10 +03:00
benchmarks
bindings [Go] Fix bindings/go/llvm/IRBindings.cpp 2020-12-16 10:09:58 -08:00
cmake [CMake] Avoid __FakeVCSRevision.h with no git repository 2020-12-16 17:33:20 +01:00
docs [TableGen] Add the !substr() bang operator 2020-12-23 10:59:33 -05:00
examples [NFC] Reduce include files dependency and AA header cleanup (part 2). 2020-12-17 14:04:48 +03:00
include Revert more changes that landed on top of 741978d727 2020-12-23 14:20:21 -05:00
lib [LoopIdiom] 'left-shift until bittest' idiom: support rewriting loop as countable, allow extra cruft 2020-12-23 22:28:10 +03:00
projects llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
resources
runtimes [OpenMP] Fixed the issue that CMake variables for OpenMP were not passed through when building OpenMP with LLVM_ENABLE_RUNTIMES 2020-12-20 18:40:12 -05:00
test [LoopIdiom] 'left-shift until bittest' idiom: support rewriting loop as countable, allow extra cruft 2020-12-23 22:28:10 +03:00
tools [llvm-readobj] - Dump the ELF file type better. 2020-12-23 11:13:19 +03:00
unittests [ADT] Fix some tests after 5d10b8ad 2020-12-22 18:06:19 +00:00
utils clang: Build and run FrontendTests with CLANG_ENABLE_STATIC_ANALYZER=OFF too 2020-12-23 14:27:09 -05:00
.clang-format
.clang-tidy - Update .clang-tidy to ignore parameters of main like functions for naming violations in clang and llvm directory 2020-01-31 16:49:45 +00:00
.gitattributes
.gitignore [clangd] Store index in '.cache/clangd/index' instead of '.clangd/index' 2020-07-07 14:53:45 +02:00
CMakeLists.txt Remove Python2 fallback and only advertise Python3 in the doc 2020-12-17 15:40:16 +01:00
CODE_OWNERS.TXT [CODE_OWNERS.TXT] Update to include yours truly as the TableGen owner 2020-11-12 09:49:00 -05:00
configure
CREDITS.TXT [NFC] Add contributors names to CREDITS.TXT 2020-10-07 13:22:55 -04:00
LICENSE.TXT
llvm.spec.in
README.txt Test commit. 2020-03-14 18:08:26 -07:00
RELEASE_TESTERS.TXT

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