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Roman Lebedev 16fb7a66c8 [SCEV] SCEVExpander::isHighCostExpansionHelper(): begin cost modelling - model cast cost 
Summary:
This is not a NFC, although it does not change any of the existing tests.
I'm not really sure if we should have specific tests for the cost modelling itself.

This is the first patch that actually makes `SCEVExpander::isHighCostExpansionHelper()`
account for the cost of the SCEV expression, and consider the budget available,
by modelling cast expressions.

I believe the logic itself is "pretty obviously correct" - from budget,
we need to subtract the cost of the cast expression from inner type `Op->getType()`
to the `S->getType()` type, and recurse into the expression we are casting.

Reviewers: reames, mkazantsev, wmi, sanjoy

Reviewed By: mkazantsev

Subscribers: xbolva00, hiraditya, javed.absar, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D73716
2020-02-25 23:05:57 +03:00
benchmarks
bindings [LLVM-C] Add bindings for addCoroutinePassesToExtensionPoints 2020-02-24 20:15:51 +01:00
cmake Add llvm-cov to LLVM_TOOLCHAIN_TOOLS 2020-02-25 10:59:55 +01:00
docs Allow "callbr" to return non-void values 2020-02-24 18:29:06 -08:00
examples [ORC][examples] Fix ThinLtoJIT example after changes in 85fb997659b. 2020-02-20 11:15:08 -08:00
include [SCEV] SCEVExpander::isHighCostExpansionHelper(): begin cost modelling - model cast cost 2020-02-25 23:05:57 +03:00
lib [SCEV] SCEVExpander::isHighCostExpansionHelper(): begin cost modelling - model cast cost 2020-02-25 23:05:57 +03:00
projects Add few docs and implementation of strcpy and strcat. 2019-10-04 17:30:54 +00:00
resources
runtimes [runtimes] Add umbrella targets for runtimes 2020-02-12 09:46:14 -08:00
test [PhaseOrdering] add tests for missed CSE; NFC 2020-02-25 14:30:59 -05:00
tools [ORC] Update LLJIT to automatically run specially named initializer functions. 2020-02-22 11:49:14 -08:00
unittests [NFC][SCEV] Piping to pass TTI into SCEVExpander::isHighCostExpansionHelper() 2020-02-25 23:05:56 +03:00
utils Fix DfaEmitter::visitDfaState() crash in MSVC x86 debug builds (PR44945) 2020-02-25 15:18:41 +01:00
.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 Fix the "git modified" issue on the preserve-comments-crlf.s. 2019-09-10 12:17:49 +00:00
.gitignore Continue removing llgo. 2020-02-10 10:33:58 -08:00
CMakeLists.txt [AIX] Improve 32/64-bit build configuration 2020-02-20 15:41:00 -05:00
CODE_OWNERS.TXT Remove myself from CODE_OWNERS. 2020-02-25 11:59:29 +00:00
configure
CREDITS.TXT Update email address. 2019-07-17 07:02:02 +00:00
LICENSE.TXT Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
llvm.spec.in Update structured references to the license to the new license. 2019-01-19 11:30:51 +00:00
LLVMBuild.txt Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
README.txt Test commit. 2019-10-03 14:57:49 +00:00
RELEASE_TESTERS.TXT

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