Michael Kuperstein 493cb3070b [X86] Improve shift combining ... This folds (ashr (shl a, [56,48,32,24,16]), SarConst) into (shl, (sext (a), [56,48,32,24,16] - SarConst)) or into (lshr, (sext (a), SarConst - [56,48,32,24,16])) depending on sign of (SarConst - [56,48,32,24,16]) sexts in X86 are MOVs. The MOVs have the same code size as above SHIFTs (only SHIFT by 1 has lower code size). However the MOVs have 2 advantages to SHIFTs on x86: 1. MOVs can write to a register that differs from source. 2. MOVs accept memory operands. This fixes PR24373. Patch by: evgeny.v.stupachenko@intel.com Differential Revision: http://reviews.llvm.org/D13161 llvm-svn: 255761		2015-12-16 11:22:37 +00:00
..
Analysis	[X86][SSE] Update the cost table for integer-integer conversions on SSE2/SSE4.1.	2015-12-11 00:31:39 +00:00
Assembler	[ConstantFold] Fix bitcast to gep constant folding transform.	2015-12-14 19:30:32 +00:00
Bindings
Bitcode	add fast-math-flags to 'call' instructions (PR21290)	2015-12-14 21:59:03 +00:00
BugPoint
CodeGen	[X86] Improve shift combining	2015-12-16 11:22:37 +00:00
DebugInfo	Recommit LiveDebugValues pass after fixing a couple of minor issues.	2015-12-16 11:09:48 +00:00
Examples
ExecutionEngine	Un-XFAIL JIT EH tests under [am]san.	2015-12-15 23:46:21 +00:00
Feature	[MergeFunctions] Use II instead of CI for InvokeInst; NFC	2015-12-14 19:11:45 +00:00
FileCheck
Instrumentation	[PGO] make profile prefix even shorter and more readable	2015-12-15 00:32:56 +00:00
Integer
JitListener
LibDriver
Linker	Use diagnostic handler in the LLVMContext	2015-12-14 23:17:03 +00:00
LTO
MC	[X86] Add relaxtion logic for SBB instructions.	2015-12-15 00:09:23 +00:00
Object	Stabilize llvm/test/Object/archive-update.test a bit.	2015-12-07 23:15:57 +00:00
Other	[llc/opt] Add an option to run all passes twice	2015-12-04 21:56:46 +00:00
SymbolRewriter
TableGen	Add new vector types for 512-, 1024- and 2048-bit vectors	2015-11-24 13:07:35 +00:00
tools	[sancov] blacklist support.	2015-12-16 00:31:48 +00:00
Transforms	[EarlyCSE] DSE of stores which write back loaded values	2015-12-16 01:01:30 +00:00
Unit
Verifier	[IR] Add support for floating pointer atomic loads and stores	2015-12-16 00:49:36 +00:00
YAMLParser
.clang-format
CMakeLists.txt	[llvm-dwp] Add missing dependency from llvm tests on the llvm-dwp tool	2015-12-01 00:57:05 +00:00
lit.cfg	check-llvm: Introduce the new feature "tls".	2015-12-01 01:14:58 +00:00
lit.site.cfg.in
Makefile
Makefile.tests
TestRunner.sh