llvm-capstone

mirror of https://github.com/capstone-engine/llvm-capstone.git synced 2024-12-16 04:20:59 +00:00

History

Chandler Carruth 9f4d9fa54e [x86] Teach the new vector shuffle lowering how to lower 128-bit shuffles using AVX and AVX2 instructions. This fixes PR21138, one of the few remaining regressions impacting benchmarks from the new vector shuffle lowering. You may note that it "regresses" many of the vperm2x128 test cases -- these were actually "improved" by the naive lowering that the new shuffle lowering previously did. This regression gave me fits. I had this patch ready-to-go about an hour after flipping the switch but wasn't sure how to have the best of both worlds here and thought the correct solution might be a completely different approach to lowering these vector shuffles. I'm now convinced this is the correct lowering and the missed optimizations shown in vperm2x128 are actually due to missing target-independent DAG combines. I've even written most of the needed DAG combine and will submit it shortly, but this part is ready and should help some real-world benchmarks out. llvm-svn: 219079		2014-10-05 11:41:36 +00:00
..
autoconf	Remove unused ALL_BINDINGS configuration variable.	2014-10-03 23:03:01 +00:00
bindings	Reinstate "Nuke the old JIT."	2014-09-02 22:28:02 +00:00
cmake	Add LLVM_ENABLE_MODULES flag to CMake to enable building with C++ modules.	2014-09-26 22:40:15 +00:00
docs	DI: Fixup global syntax in example	2014-10-04 15:44:01 +00:00
examples	Add doInitialization/doFinalization to DataLayoutPass.	2014-09-10 21:27:43 +00:00
include	Make AAMDNodes ctor and operator bool (!!!) explicit, mop up bugs and weirdness exposed by it.	2014-10-04 22:44:29 +00:00
lib	[x86] Teach the new vector shuffle lowering how to lower 128-bit	2014-10-05 11:41:36 +00:00
projects
test	[x86] Teach the new vector shuffle lowering how to lower 128-bit	2014-10-05 11:41:36 +00:00
tools	llvm-readobj: print out the fields of the COFF delay-import table	2014-10-03 18:07:18 +00:00
unittests	[CMake] HexagonTests: Update LINK_COMPONENTS.	2014-10-05 04:54:41 +00:00
utils	PR21101: tablegen's FastISel emitter should filter out unused functions.	2014-10-01 22:44:01 +00:00
.arcconfig
.clang-format
.clang-tidy	Add .clang-tidy configuration file to provide LLVM-optimized defaults for	2014-09-08 13:30:00 +00:00
.gitignore
CMakeLists.txt	Add LLVM_ENABLE_MODULES flag to CMake to enable building with C++ modules.	2014-09-26 22:40:15 +00:00
CODE_OWNERS.TXT	Add Tom Stellard's role as 3.5 release manager.	2014-09-12 08:07:31 +00:00
configure	Remove unused ALL_BINDINGS configuration variable.	2014-10-03 23:03:01 +00:00
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in	Remove unused ALL_BINDINGS configuration variable.	2014-10-03 23:03:01 +00:00
Makefile.rules	Revert my earlier change to add "all" as a dependency to check. In	2014-09-19 18:44:27 +00:00
README.txt

README.txt

Low Level Virtual Machine (LLVM)
================================

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