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Craig Topper a63f955255 [X86] Attempt to more accurately model the cost of a bool reduction of wide vector type. 
Previously we multiplied the cost for the table entries by the number of splits needed. But that implies that each split goes through a reduction to scalar independently. I think what really happens is that the we AND/OR the split pieces until we're down to a single value with a legal type and then do special reduction sequence on that.

So to model that this patch takes the number of splits minus one multiplied by the cost of a AND/OR at the legal element count and adds that on top of the table lookup.

Differential Revision: https://reviews.llvm.org/D76400
2020-03-19 09:31:05 -07:00
benchmarks
bindings Add an SDK attribute to DICompileUnit 2020-03-11 14:14:06 -07:00
cmake [ValueTypes] Add EVT::isFixedLengthVector 2020-03-19 10:08:17 +00:00
docs [VP,Integer,#1] Vector-predicated integer intrinsics 2020-03-19 10:51:47 +01:00
examples Fix warning: extra ‘;’ (NFC) 2020-03-18 14:22:10 +00:00
include [Support] Improve Windows widenPath and add support for long UNC paths 2020-03-19 13:00:21 +00:00
lib [X86] Attempt to more accurately model the cost of a bool reduction of wide vector type. 2020-03-19 09:31:05 -07:00
projects Add few docs and implementation of strcpy and strcat. 2019-10-04 17:30:54 +00:00
resources
runtimes [runtimes] When COMPILER_RT is enabled, consider SANITIZER prefixes 2020-03-11 14:22:20 -07:00
test [X86] Attempt to more accurately model the cost of a bool reduction of wide vector type. 2020-03-19 09:31:05 -07:00
tools [obj2yaml] - SHT_DYNAMIC and SHT_REL* sections: stop dumping sh_entsize field when it has the default value. 2020-03-19 17:25:53 +03:00
unittests [Support] Improve Windows widenPath and add support for long UNC paths 2020-03-19 13:00:21 +00:00
utils [gn build] Port 733b3199487 2020-03-19 09:52:27 +00:00
.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 [ValueTypes] Add EVT::isFixedLengthVector 2020-03-19 10:08:17 +00:00
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. 2020-03-14 18:08:26 -07:00
RELEASE_TESTERS.TXT Update the list of platforms & archs 2018-12-16 14:47:16 +00:00

README.txt 

The LLVM Compiler Infrastructure
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