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Craig Topper ceef866b00 [X86] Don't avoid folding multiple use sign extended 8-bit immediate into instructions under optsize. 
Under optsize we try to avoid folding immediates into instructions under optsize. But if the immediate is 16-bits or 32 bits, but can be encoded as an 8-bit immediate we don't save enough from disabling the folding unless the immediate has enough uses to make up for the size of the move which is either 3 bytes or 5 bytes since there are no sign extended 8-bit moves. We would also save something if the immediate was a live out of the basic block and thus a move was unavoidable, but that would require a more advanced heuristic than just counting uses.

Note we only avoid folding multiple use immediates into the patterns that use X86ISD::ADD/SUB/XOR/OR/AND/CMP/ADC/SBB nodes and not the more common ISD::ADD/SUB/XOR/OR/AND nodes.

Differential Revision: https://reviews.llvm.org/D59522

llvm-svn: 356688
2019-03-21 17:38:58 +00:00
benchmarks Pull google/benchmark library to the LLVM tree 2018-08-28 09:42:41 +00:00
bindings [bindings/go] Fix building on 32-bit systems (ARM etc.) 2019-02-16 22:33:10 +00:00
cmake Remove HAVE_REALPATH from config.h 2019-03-20 17:26:11 +00:00
docs [DebugInfo] Introduce DW_OP_LLVM_convert 2019-03-19 13:16:28 +00:00
examples [Kaleidoscope] Fix symbol resolver to search in reverse order. 2019-02-21 16:53:04 +00:00
include [ScalarizeMaskedMemIntrin] Add support for scalarizing expandload and compressstore intrinsics. 2019-03-21 17:38:52 +00:00
lib [X86] Don't avoid folding multiple use sign extended 8-bit immediate into instructions under optsize. 2019-03-21 17:38:58 +00:00
projects Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
runtimes [runtime] Use --strip-all rather than --strip-sections 2019-03-10 04:26:54 +00:00
test [X86] Don't avoid folding multiple use sign extended 8-bit immediate into instructions under optsize. 2019-03-21 17:38:58 +00:00
tools [llvm-readobj] Format codes. NFC. 2019-03-21 13:42:06 +00:00
unittests Fix two more issues with r356652 2019-03-21 10:21:55 +00:00
utils Remove HAVE_REALPATH from config.h 2019-03-20 17:26:11 +00:00
.arcconfig [llvm] Set up .arcconfig to point to Diffusion L repository 2018-01-12 15:37:41 +00:00
.clang-format
.clang-tidy Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
.gitattributes [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
.gitignore [clangd] Store index in '.clangd/index' instead of '.clangd-index' 2019-02-20 19:08:06 +00:00
CMakeLists.txt Use response file when generating LLVM-C.dll 2019-03-19 09:14:09 +00:00
CODE_OWNERS.TXT [llvm-mca] Move llvm-mca library to llvm/lib/MCA. 2018-12-17 08:08:31 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT [NFC] Add to contributor list. 2019-02-26 05:46:45 +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 Testing commit access 2019-02-19 20:38:51 +00:00
RELEASE_TESTERS.TXT Update the list of platforms & archs 2018-12-16 14:47:16 +00:00

README.txt 

The LLVM Compiler Infrastructure
================================

This directory and its subdirectories contain source code for LLVM,
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Please see the documentation provided in docs/ for further
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If you are writing a package for LLVM, see docs/Packaging.rst for our
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