Michael Kuperstein 5e343e6fd0 [X86] Improve a dag-combine that handles a vector extract -> zext sequence. ... The current DAG combine turns a sequence of extracts from <4 x i32> followed by zexts into a store followed by scalar loads. According to measurements by Martin Krastev (see PR 21269) for x86-64, a sequence of an extract, movs and shifts gives better performance. However, for 32-bit x86, the previous sequence still seems better. Differential Revision: http://reviews.llvm.org/D6501 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223360 91177308-0d34-0410-b5e6-96231b3b80d8		2014-12-04 13:49:51 +00:00
..
Analysis	Masked Load / Store Intrinsics - the CodeGen part.	2014-12-04 09:40:44 +00:00
AsmParser	Prologue support	2014-12-03 02:08:38 +00:00
Bitcode	Ask the module for its the identified types.	2014-12-03 07:18:23 +00:00
CodeGen	Use DomTree in MachineSink to sink over diamonds.	2014-12-04 10:36:42 +00:00
DebugInfo	Make DWARFAcceleratorTable::dump() const.	2014-11-20 16:21:11 +00:00
ExecutionEngine	[MCJIT] Unique-ptrify the RTDyldMemoryManager member of MCJIT. NFC.	2014-12-03 00:51:19 +00:00
IR	Masked Load / Store Intrinsics - the CodeGen part.	2014-12-04 09:40:44 +00:00
IRReader	Remove unused variable. NFC.	2014-11-06 23:16:57 +00:00
LineEditor
Linker	Split the set of identified struct types into opaque and non-opaque ones.	2014-12-03 22:36:37 +00:00
LTO	Remove StringMap::GetOrCreateValue in favor of StringMap::insert	2014-11-19 05:49:42 +00:00
MC	clang-formatted ranged loops and assignment, NFC.	2014-12-04 08:30:39 +00:00
Object	Add mach-o LC_RPATH support to llvm-objdump	2014-12-04 07:37:02 +00:00
Option	Add an overload of getLastArgNoClaim taking two OptSpecifiers.	2014-09-12 19:42:53 +00:00
ProfileData	llvm-cov: Sink some reporting logic into CoverageMapping	2014-11-14 01:50:32 +00:00
Support	Triple: Add AMDHSA operating system type	2014-12-02 16:45:47 +00:00
TableGen	Revert r222957 "Replace std::map<K, V*> with std::map<K, V> to handle ownership and deletion of the values."	2014-11-30 01:20:17 +00:00
Target	[X86] Improve a dag-combine that handles a vector extract -> zext sequence.	2014-12-04 13:49:51 +00:00
Transforms	[InstCombine] Minor optimization for bswap with binary ops	2014-12-04 09:44:01 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile