Preston Gurd 2e2efd9600 Generic Bypass Slow Div ... - CodeGenPrepare pass for identifying div/rem ops - Backend specifies the type mapping using addBypassSlowDivType - Enabled only for Intel Atom with O2 32-bit -> 8-bit - Replace IDIV with instructions which test its value and use DIVB if the value is positive and less than 256. - In the case when the quotient and remainder of a divide are used a DIV and a REM instruction will be present in the IR. In the non-Atom case they are both lowered to IDIVs and CSE removes the redundant IDIV instruction, using the quotient and remainder from the first IDIV. However, due to this optimization CSE is not able to eliminate redundant IDIV instructions because they are located in different basic blocks. This is overcome by calculating both the quotient (DIV) and remainder (REM) in each basic block that is inserted by the optimization and reusing the result values when a subsequent DIV or REM instruction uses the same operands. - Test cases check for the presents of the optimization when calculating either the quotient, remainder, or both. Patch by Tyler Nowicki! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163150 91177308-0d34-0410-b5e6-96231b3b80d8		2012-09-04 18:22:17 +00:00
..
ADCE.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00
BasicBlockPlacement.cpp	Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which	2010-10-19 17:21:58 +00:00
CMakeLists.txt	move the bounds checking pass to the instrumentation folder, where it belongs. I dunno why in the world I dropped it in the Scalar folder in the first place.	2012-07-20 22:39:33 +00:00
CodeGenPrepare.cpp	Generic Bypass Slow Div	2012-09-04 18:22:17 +00:00
ConstantProp.cpp	Last bit of TargetLibraryInfo propagation. Also fixed a case for TargetData	2011-12-01 21:29:16 +00:00
CorrelatedValuePropagation.cpp	llvm::SwitchInst	2012-03-11 06:09:17 +00:00
DCE.cpp	Make MemoryBuiltins aware of TargetLibraryInfo.	2012-08-29 15:32:21 +00:00
DeadStoreElimination.cpp	Make MemoryBuiltins aware of TargetLibraryInfo.	2012-08-29 15:32:21 +00:00
EarlyCSE.cpp	Make MemoryBuiltins aware of TargetLibraryInfo.	2012-08-29 15:32:21 +00:00
GlobalMerge.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00
GVN.cpp	Make MemoryBuiltins aware of TargetLibraryInfo.	2012-08-29 15:32:21 +00:00
IndVarSimplify.cpp	Make MemoryBuiltins aware of TargetLibraryInfo.	2012-08-29 15:32:21 +00:00
JumpThreading.cpp	Make MemoryBuiltins aware of TargetLibraryInfo.	2012-08-29 15:32:21 +00:00
LICM.cpp	LICM may hoist an instruction with undefined behavior above a trap.	2012-09-04 10:25:04 +00:00
LLVMBuild.txt	LLVMBuild: Remove trailing newline, which irked me.	2011-12-12 19:48:00 +00:00
LoopDeletion.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00
LoopIdiomRecognize.cpp	Make MemoryBuiltins aware of TargetLibraryInfo.	2012-08-29 15:32:21 +00:00
LoopInstSimplify.cpp	Make MemoryBuiltins aware of TargetLibraryInfo.	2012-08-29 15:32:21 +00:00
LoopRotation.cpp	LoopRotation: Make the brute force DomTree update more brute force.	2012-09-02 11:57:22 +00:00
LoopStrengthReduce.cpp	Don't bind a reference to a dereferenced null pointer (for return value of WeakVH::operator*).	2012-08-21 20:35:14 +00:00
LoopUnrollPass.cpp	LoopUnrollPass: Use variable "Threshold" instead of "CurrentThreshold" when	2012-04-04 11:44:08 +00:00
LoopUnswitch.cpp	Do not pass an invalid domtree to SimplifyInstruction from	2012-05-20 01:32:09 +00:00
LowerAtomic.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00
Makefile	make -fno-rtti the default unless a directory builds with REQUIRES_RTTI.	2010-01-24 20:43:08 +00:00
MemCpyOptimizer.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00
ObjCARC.cpp	Don't use for loops for code that is only intended to execute once. No	2012-08-27 18:31:36 +00:00
Reassociate.cpp	Stop reassociate from looking through expressions of arbitrary complexity. This	2012-07-26 09:26:40 +00:00
Reg2Mem.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00
Scalar.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00
ScalarReplAggregates.cpp	Port the global copy optimization from the SROA pass to InstCombine.	2012-08-21 08:39:44 +00:00
SCCP.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00
SimplifyCFGPass.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00
SimplifyLibCalls.cpp	SimplifyLibCalls: Give all safely-shrinkable libcalls the same treatment.	2012-08-22 19:39:15 +00:00
Sink.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00
TailRecursionElimination.cpp	Clean whitespaces.	2012-07-24 10:51:42 +00:00