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
..
ADCE.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
CMakeLists.txt	Revert "Revert "Add Constant Hoisting Pass" (r200034)"	2014-01-25 02:02:55 +00:00
CodeGenPrepare.cpp	X86 CodeGenPrep: sink shufflevectors before shifts	2014-02-19 10:02:43 +00:00
ConstantHoisting.cpp	[Constant Hoisting] Fix insertion point for constant materialization.	2014-02-08 00:20:49 +00:00
ConstantProp.cpp
CorrelatedValuePropagation.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
DCE.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
DeadStoreElimination.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
EarlyCSE.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
FlattenCFGPass.cpp
GlobalMerge.cpp	GlobalMerge: move "-global-merge" option to the pass itself.	2014-02-18 11:17:29 +00:00
GVN.cpp	Make succ_iterator a real random access iterator and clean up a couple of users.	2014-02-10 14:17:42 +00:00
IndVarSimplify.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
JumpThreading.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
LICM.cpp	[LPM] Switch LICM to actively use LCSSA in addition to preserving it.	2014-02-11 12:52:27 +00:00
LLVMBuild.txt
LoopDeletion.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
LoopIdiomRecognize.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
LoopInstSimplify.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
LoopRerollPass.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
LoopRotation.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
LoopStrengthReduce.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
LoopUnrollPass.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
LoopUnswitch.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
LowerAtomic.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
Makefile
MemCpyOptimizer.cpp	A memcpy out of an fresh alloca is a no-op, delete it. Patch by Patrick Walton!	2014-02-06 06:29:19 +00:00
PartiallyInlineLibCalls.cpp
Reassociate.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
Reg2Mem.cpp
SampleProfile.cpp
Scalar.cpp	Revert "Revert "Add Constant Hoisting Pass" (r200034)"	2014-01-25 02:02:55 +00:00
Scalarizer.cpp
ScalarReplAggregates.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
SCCP.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
SimplifyCFGPass.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00
Sink.cpp
SROA.cpp	Trivial cleanup: reuse existing variable.	2014-02-14 19:02:01 +00:00
StructurizeCFG.cpp	cleanup: scc_iterator consumers should use isAtEnd	2014-02-04 19:19:07 +00:00
TailRecursionElimination.cpp	Disable most IR-level transform passes on functions marked 'optnone'.	2014-02-06 00:07:05 +00:00