Tim Northover 44697f3fc1 X86 CodeGenPrep: sink shufflevectors before shifts ... On x86, shifting a vector by a scalar is significantly cheaper than shifting a vector by another fully general vector. Unfortunately, because SelectionDAG operates on just one basic block at a time, the shufflevector instruction that reveals whether the right-hand side of a shift *is* really a scalar is often not visible to CodeGen when it's needed. This adds another handler to CodeGenPrepare, to sink any useful shufflevector instructions down to the basic block where they're used, predicated on a target hook (since on other architectures, doing so will often just introduce extra real work). rdar://problem/16063505 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201655 91177308-0d34-0410-b5e6-96231b3b80d8		2014-02-19 10:02:43 +00:00
..
Analysis	Rename some member variables from TD to DL.	2014-02-18 15:33:12 +00:00
AsmParser	[ms-cxxabi] Add a new calling convention that swaps 'this' and 'sret'	2014-01-31 17:41:22 +00:00
Bitcode	Make parseBitcodeFile return an ErrorOr<Module *>.	2014-01-15 01:08:23 +00:00
CodeGen	Avoid an infinite cycle with private linkage and -f{data|function}-sections.	2014-02-19 01:28:30 +00:00
DebugInfo	Support DWARF discriminators in object streamer.	2014-02-14 19:27:53 +00:00
ExecutionEngine	Fix PR18743.	2014-02-18 22:24:57 +00:00
IR	Fix PR18743.	2014-02-18 22:24:57 +00:00
IRReader	Make parseBitcodeFile return an ErrorOr<Module *>.	2014-01-15 01:08:23 +00:00
LineEditor	Avoid using EL_GETFP.	2014-02-04 20:04:46 +00:00
Linker	Add a -suppress-warnings option to bitcode linking.	2014-02-06 18:01:56 +00:00
LTO	Fix PR18743.	2014-02-18 22:24:57 +00:00
MC	MCAsmParser: support required parameters	2014-02-19 03:00:29 +00:00
Object	Change the begin and end methods in ObjectFile to match the style guide.	2014-02-10 20:24:04 +00:00
Option
Support	Use mkdir instead of stat+mkdir.	2014-02-13 16:58:19 +00:00
TableGen	[TableGen] Correctly generate implicit anonymous prototype defs in multiclasses	2014-01-02 20:47:09 +00:00
Target	X86 CodeGenPrep: sink shufflevectors before shifts	2014-02-19 10:02:43 +00:00
Transforms	X86 CodeGenPrep: sink shufflevectors before shifts	2014-02-19 10:02:43 +00:00
CMakeLists.txt	Introduce line editor library.	2014-01-31 23:46:14 +00:00
LLVMBuild.txt	Introduce line editor library.	2014-01-31 23:46:14 +00:00
Makefile	Introduce line editor library.	2014-01-31 23:46:14 +00:00